14
US006884932B2 12) United States Patent 10) Patent N0.: U S 6,884,932 B2 Wrona e t al. (45) Date of Patent: Apr. 26, 2005 54) STRINGED INSTRUMENT TRUSS 56) References Cited ASSEMBLY U.S. PATENT DOCUMENTS (76) Inventors: Michael Wrona, 907 Escarpment Dr., Lewiston, NY Glen Allen 2 : fIrebs ...................... . . , , oura ian ................. . . §I$IESS9O174E9SZarPmem Dr Lewlston’ 4,843,941 A * 7/1989 Nichols e t al. ...... . . 83/313 ( ) 5,127,299 A * 7/1992 Stroh e t al. ............. . . 84/314 N ( * ) Notice: Subject to any disclaimer, the term of this * . t d b . patent i s extended or adjusted under 3 5 C 1 6 y examlner U.S.C. 154(b) by 34 days. Primary Examiner—Shih-Yung Hsieh (21) Appl. No.: 10/435,795 (74) Attorney, Agent, or Firm—Phillips Lytle LLP (22) Filed: May 12, 2003 (57) ABSTRACT 65) Prior Publication Data An mproved musical instrument 15) having a body (16), an elongated neck 18) connected to the body, a top-nut 19) supported by the neck, a bridge (20) supported b y the body, .................... .. G1 D 3/00 and a truss 21) in mechanical engagement With the bridge U S 2004/0226432 A1 Nov. 18, 2004 (51) Int. Cl? 52) US. Cl. ........................... . . 84/291; 84/293; 84/313; and the top-nut The truss may comprise a truss rod 22) 84/314 N extending longitudinally betWeen the top-nut and the bridge. 58) Field of Search ........................ . . 84/291, 293, 313, 84/314 N 14 Claims, 8 Drawing Sheets 4 n 1 . _ 1 ‘=1 1 9 20 103 x ‘BY 5 5 x A \ _ \ i 1 i irTm-i ] r \r / Q I , \ 5* AZZ/z/ I V r I . \ , , k n ' £ 4 -. 2 a 30 29

US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005

Embed Size (px)

Citation preview

Page 1: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 1/14

US006884932B2

1 2 ) United States Patent 1 0 ) P a t e n t N 0 . : US 6 , 8 8 4 , 9 3 2 B2

Wrona e t a l . ( 4 5 ) D a t e

o f P a t e n t :

A p r . 2 6 , 2 0 0 5

5 4 )

STRINGED

INSTRUMENT

TRUSS

5 6 )

R e f e r e n c e s C i t e d

ASSEMBLY

U . S . PATENT DOCUMENTS

( 7 6 ) I n v e n t o r s :

M i c h a e l

W r o n a ,

9 0 7

E s c a r p m e n t

D r . ,

Lewiston, NY Glen

Allen

2 :

f I r e b s

. . . . . . . . . . . . . . . . . . . . . . . ., , oura

i a n

. . . . . . . . . . . . . . . . . . .

§I$IESS9O174E9SZarPmem

Dr Lewlston’ 4 , 8 4 3 , 9 4 1 A * 7 / 1 9 8 9 N i c h o l s e t a l . . . . . . . . . 8 3 / 3 1 3

( ) 5,127,299

A

*

7/1992

S t r o h e t a l . . . . . . . . . . . . . . . .

84/314

N

(

*

) N o t i c e : S u b j e c t t o any d i s c l a i m e r ,

t h e

term o f t h i s

*

. t d b

.

p a t e n t

i s

extended o r a d j u s t e d under

35

C 1 6 y

examlner

U . S . C . 1 5 4 ( b )

b y 3 4

d a y s .

P r i m a r y E x a m i n e r — S h i h - Y u n g

H s i e h

( 2 1 )

A p p l . N o . :

1 0 / 4 3 5 , 7 9 5 ( 7 4 ) A t t o r n e y , A g e n t ,

o r F i r m — P h i l l i p s L y t l e

LLP

( 2 2 )

F i l e d : May 1 2 ,

2 0 0 3 ( 5 7 ) ABSTRACT

6 5 ) P r i o r P u b l i c a t i o n D a t a An

m p r o v e d

m u s i c a l

i n s t r u m e n t 1 5 ) h a v i n g a b o d y ( 1 6 ) , a n

e l o n g a t e d

n e c k

1 8 ) c o n n e c t e d

t o t h e

b o d y , a t o p - n u t 1 9 )

s u p p o r t e d

b y t h e n e c k ,

a b r i d g e

( 2 0 )

s u p p o r t e d

b y t h e

b o d y ,

. . . . . . . . . . . . . . . . . . . .

. .

G1 D 3/00

and

a t r u s s

2 1 )

i n

mechanical

engagement

With

t h e

b r i d g e

U S 2004/0226432 A1 N o v .

1 8 , 2004

( 5 1 )

I n t .

C l ?

5 2 ) US. C l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 4 / 2 9 1 ; 8 4 / 2 9 3 ; 8 4 / 3 1 3 ;

and

t h e t o p - n u t

The t r u s s m a y c o m p r i s e a t r u s s

r o d

2 2 )

8 4 / 3 1 4 N

e x t e n d i n g

l o n g i t u d i n a l l y b e t W e e n t h e

t o p - n u t

a n d t h e b r i d g e .

5 8 ) F i e l d of Search . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 / 2 9 1 , 2 9 3 , 3 1 3 ,

8 4 / 3 1 4 N 1 4 C l a i m s , 8 Drawing S h e e t s

4

n1 . _

1 ‘ = 1

1

9

2 0 1 0 3

x‘BY 5 5 x

A

\

_\

i 1 i

irTm-i

] r \r /

Q

I ,

\ 5* AZZ/z/

I

V r

I

.

\ , ,

kn

'

£4-.

2 a 3 0 2 9

Page 2: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 2/14

U.S.

Patent A p r . 2 6 , 2 0 0 5

S h e e t 1 o f

8 US 6 , 8 8 4 , 9 3 2 B2

HO

1

Page 3: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 3/14

U.S.

Patent A p r . 2 6 , 2 0 0 5

S h e e t 2

o f 8 US 6 , 8 8 4 , 9 3 2 B2

Page 4: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 4/14

U.S.

Patent A p r . 2 6 , 2 0 0 5

S h e e t 3

o f 8 US 6 , 8 8 4 , 9 3 2

B2

/

7 2 . . . ‘

Page 5: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 5/14

U.S.

Patent A p r . 2 6 , 2 0 0 5

S h e e t 4

o f 8 US 6 , 8 8 4 , 9 3 2 B2

1 0 3

Page 6: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 6/14

U.S. Patent A p r . 2 6 , 2 0 0 5

S h e e t 5 o f

8 US 6 , 8 8 4 , 9 3 2 B2

F I G .

8

F I G .

1 0

Page 7: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 7/14

Page 8: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 8/14

U.S.

Patent A p r . 2 6 , 2 0 0 5

S h e e t 7 o f

8 US 6 , 8 8 4 , 9 3 2 B2

5 0

Page 9: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 9/14

U.S.

Patent A p r . 2 6 , 2 0 0 5

S h e e t

8 o f 8 US 6 , 8 8 4 , 9 3 2

B2

F I G .

1 4

F I G .

1 5

Page 10: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 10/14

US 6 , 8 8 4 , 9 3 2 B2

1

STRINGED INSTRUMENT

TRUSS

ASSEMBLY

TECHNICAL

FIELD

The p re s e n t i n v e n t i o n

r e l a t e s

g e n e r a l l y t o t h e

? e l d o f

s t r i n g e d

i n s t r u m e n t s

a n d ,

more

p a r t i c u l a r l y ,

t o

a n i n s t r u m e n t

h a v i n g

a t r u s s r o d a s s e m b l y W h i c h p r o v i d e s f o r i m p r o v e d

a u d i o s u s t a i n .

BACKGROUND ART

T r u s s

r o d

a s s e m b l i e s f o r

s t r i n g e d

i n s t r u m e n t s , s u c h a s

g u i t a r s ,

a r e known i n

t h e p r i o r a r t . C o n v e n t i o n a l g u i t a r s

g e n e r a l l y i n c l u d e

a

t r u s s r o d

Which e X t e n d s

t h e l e n g t h o f t h e

n e c k

o f

t h e g u i t a r .

H o W e v e r ,

s u c h

c o n v e n t i o n a l t r u s s

r o d

a s s e m b l i e s do n o t

have a

t r u s s r o d t h a t e x t e n d s beyond t h e

p o i n t a t Which h e n e c k o f

t h e g u i t a r

i s c o n n e c t e d t o

t h e

body

o f

t h e

g u i t a r . F u r t h e r m o r e ,

t h e s t r i n g s i n a

c o n v e n t i o n a l

g u i t a r

g e n e r a l l y r i d e on a t o p - n u t a t t h e end o f

t h e neck

t h a t

i s

i n d e p e n d e n t

o f t h e t r u s s r o d and on a

b r i d g e

l o c a t e d on

h e

body o f t h e g u i t a r

t h a t

i s a l s o i n d e p e n d e n t o f t h e

t r u s s

r o d .

The

t o p - n u t

a n d

b r i d g e

a r e

t h e r e f o r e

s e p a r a t e d

by

a

mass

o f

Wood, Which

r e s u l t s i n

a

dampening a f f e c t W i t h

r e s p e c t

t o

t h e

a c t i o n o f

t h e

s t r i n g s

a n d t h e s u s t a i n

o f a

m u s i c a l n o t e .

The l e n g t h o f t i m e

a

p l a y e r c a n e X p e c t t h e i n s t r u m e n t t o r i n g

W i t h

a

m u s i c a l n o t e i s

t h e r e f o r e l i m i t e d .

A c c o r d i n g l y , i t

Would

b e b e n e ? c i a l t o

have a s t r i n g e d

i n s t r u m e n t Which

p r o v i d e s

a g r e a t e r s u s t a i n t o t h e

musical

n o t e s t h a t a r e

p l a y e d .

DISCLOSURE OF INVENTION

W i t h

p a r e n t h e t i c a l

r e f e r e n c e

t o

t h e c o r r e s p o n d i n g

p a r t s ,

p o r t i o n s o r s u r f a c e s

o f

t h e

d i s c l o s e d e m b o d i m e n t , m e r e l y f o r

t h e p u r p o s e o f i l l u s t r a t i o n a n d

n o t

by

Way o f

l i m i t a t i o n , t h e

p r e s e n t

i n v e n t i o n

p r o v i d e s a n i m p r o v e d

m u s i c a l

i n s t r u m e n t

1 5 )

c o m p r i s i n g a b o d y ( 1 6 ) ,

a n e l o n g a t e d n e c k 1 8 ) c o n

n e c t e d

t o

t h e

b o d y ,

a

t o p - n u t

1 9 )

s u p p o r t e d

b y

t h e

n e c k ,

a

b r i d g e

( 2 0 ) s u p p o r t e d b y t h e b o d y , a n d a t r u s s ( 2 1 ) i n

m e c h a n i c a l

e n g a g e m e n t W i t h t h e b r i d g e a n d t h e t o p - n u t . The

t r u s s m a y c o m p r i s e

a t r u s s r o d 2 2 )

e x t e n d i n g

l o n g i t u d i n a l l y

betWeen t h e t o p - n u t and t h e

b r i d g e . The

t r u s s r o d m a y b e a n

e l o n g a t e d

s t e e l

member

and

m a y have a n a n n u l a r c r o s s

s e c t i o n .

The

s t r i n g e d

i n s t r u m e n t

m a y

f u r t h e r c o m p r i s e

a

p l u r a l i t y o f s t r i n g s 2 3 )

m o u n t e d i n t e n s i o n

r e l a t i o n s h i p

o v e r

a t l e a s t

a p o r t i o n

o f t h e n e c k a n d t h e body a n d s u p p o r t e d a t

l e a s t i n

p a r t

b y

t h e t o p - n u t

a n d

t h e b r i d g e , a n d t h e

b r i d g e

m a y

c o m p r i s e

a b a s e s e c u r e d

t o t h e body

a n d a

s a d d l e 2 5 )

f o r

r e c e i v i n g

t h e s t r i n g s a n d a n

a r m

2 6 ) c o n ? g u r e d a n d

a r r a n g e d t o

p i v o t t h e s a d d l e i n

a ? r s t d i r e c t i o n f o r

d e c r e a s i n g

t h e

t e n s i o n

i n

t h e

s t r i n g s .

The

t r u s s r o d a s s e m b l y m a y

c o m p r i s e a t r u s s

f o r c e - t r a n s f e r

member 2 8 )

mounted

t o

t h e

t r u s s r o d a n d

t h e

b r i d g e m a y c o m p r i s e a

s a d d l e

f o r c e

t r a n s f e r

member

2 9 ) ,

a n d

a

s p r i n g 3 0 )

m a y

c t

b e t W e e n

t h e

t r u s s f o r c e - t r a n s f e r

member

and t h e s a d d l e f o r c e - t r a n s f e r

m e m b e r . The s p r i n g

m a y b e i n c o m p r e s s i o n

b e t W e e n

t h e

t r u s s f o r c e - t r a n s f e r member and t h e s a d d l e f o r c e - t r a n s f e r

member,

a n d

t h e

p i v o t a l

movement o f t h e s a d d l e

i n

t h e

? r s t

d i r e c t i o n

m a y c a u s e

c o m p r e s s i o n

o f

t h e s p r i n g . The t r u s s

f o r c e - t r a n s f e r

member m a y

b e

a d j u s t a b l y

mounted f o r l o n

g i t u d i n a l

movement

a l o n g a t

l e a s t

a

p o r t i o n

3 1 ) o f t h e t r u s s

r o d

and t h e

f o r c e o f

t h e

s p r i n g m a y

b e

a f u n c t i o n o f

t h e

l o n g i t u d i n a l p o s i t i o n

o f

t h e t r u s s f o r c e - t r a n s f e r

member

on

t h e t r u s s r o d . The

s p r i n g

m a y b e a c o i l e d

s p r i n g

a n d t h e t r u s s

r o d m a y

e X t e n d

a l o n g t h e

c e n t e r

l i n e o f t h e c o i l .

The t o p - n u t

m a y h a v e a h e a d

s i d e 3 2 )

a n d a n o p p o s i n g

n e c k

s i d e 3 3 )

a n d

a

t h r o u g h - p a s s a g e

3 4 )

b e t W e e n

t h e

s i d e s ,

10

25

35

40

45

55

6 5

2

t h e

t r u s s r o d m a y e X t e n d t h r o u g h

t h e

t h r o u g h - p a s s a g e a n d

h a v e

a

p o r t i o n

3 5 )

p r o j e c t i n g

o n

t h e h e a d

s i d e ,

t h e

p r o j e c t

i n g p o r t i o n

o f

t h e t r u s s r o d

t h r e a d e d

3 6 )

t o

r e c e i v e a

c o r r e s p o n d i n g

t h r e a d e d

a d j u s t m e n t

n u t

( 3 8 ) ,

a n d

t h e a d j u s t

ment n u t

m a y be i n t h r e a d e d engagement

W i t h t h e

t r u s s

r o d

W h e r e b y

t h e

t e n s i o n

o f t h e t r u s s

r o d

i s a d j u s t e d

b y

s e l e c t i v e

r o t a t i o n

o f

t h e

a d j u s t m e n t

n u t . The a d j u s t m e n t n u t m a y h a v e

a

t h r e a d e d

? r s t

p o r t i o n 3 9 ) a n d

a s e c o n d

p o r t i o n

c o m p r i s i n g

a r e c e s s 4 0 ) f o r r e c e i v i n g a t o r q u e - p r o d u c i n g

t o o l .

The t o p - n u t

m a y

c o m p r i s e

a

l o W e r p o r t i o n 4 1 ) s e c u r e d t o

t h e n e c k , a n u p p e r

p o r t i o n

4 2 ) a d j u s t a b l e

r e l a t i v e

t o t h e

l o W e r p o r t i o n , a n d a t l e a s t o n e u p p e r p i n

( 4 4 ) ,

t h e u p p e r p i n

a n d t h e u p p e r

p o r t i o n i n

t h r e a d e d e n g a g e m e n t s u c h

t h a t

t h e

u p p e r

p o r t i o n

moves r e l a t i v e

t o

t h e l o W e r

p o r t i o n

W i t h

s e l e c t i v e r o t a t i o n

o f

t h e

u p p e r p i n .

The s t r i n g e d i n s t r u m e n t

m a y f u r t h e r

c o m p r i s e

a p l u r a l i t y

o f

s t r i n g s mounted i n t e n s i o n r e l a t i o n s h i p o v e r

a t

l e a s t a

p o r t i o n o f t h e

n e c k a n d

t h e body

a n d s u p p o r t e d a t

l e a s t i n

p a r t

o f

t h e b r i d g e , a p i c k - u p ( 4 5 ) s u p p o r t e d

b y

t h e

b o d y

a n d

p o s i t i o n e d

b e t W e e n t h e b o d y

a n d

t h e

s t r i n g s ,

t h e

p i c k - u p

h a v i n g a t o p s u r f a c e 4 6 ) a n d

t h e

i n s t r u m e n t h a v i n g a

p i c k - u p

t i l t

a d j u s t m e n t

m e c h a n i s m ( 4 8 )

f o r

a d j u s t i n g t h e

a n g l e

o f

t h e

t o p

s u r f a c e

r e l a t i v e

t o

t h e

p l a n e

o f

t h e

s t r i n g s .

T h e p i c k - u p

may

c o m p r i s e a

s u p p o r t

p l a t e

( 4 9 ) c o n ? g u r e d t o

p i v o t a b o u t

a

p i v o t l i n e 5 0 ) a n d t h e t i l t a d j u s t m e n t mecha

n i s m m a y c o m p r i s e a t

l e a s t

o n e

s p r i n g

5 3 ) b e t W e e n t h e

body

a n d t h e s u p p o r t p l a t e

o n

a ? r s t s i d e

5 1 ) o f

t h e

p i v o t

l i n e

a n d

a

s e l e c t i v e l y

a d j u s t a b l e

member

5 5 ) b e t W e e n t h e

b o d y a n d t h e s u p p o r t p l a t e o n t h e

o p p o s i t e

s i d e 5 2 ) o f

t h e

p i v o t

l i n e

f r o m t h e

? r s t

s i d e . The a d j u s t a b l e member a n d t h e

body m a y b e i n

t h r e a d e d

e n g a g e m e n t

s u c h

t h a t t h e f o r c e o f

t h e s p r i n g on

t h e

s u p p o r t

p l a t e i s a f u n c t i o n o f t h e r o t a t i o n

o f

t h e

a d j u s t a b l e m e m b e r . T h e a d j u s t a b l e

member a n d

t h e

body

m a y

b e i n t h r e a d e d e n g a g e m e n t s u c h

t h a t t h e

a n g l e o f

t h e t o p s u r f a c e

r e l a t i v e t o t h e p l a n e o f

t h e s t r i n g s

i s

a

f u n c t i o n o f t h e r o t a t i o n o f t h e

a d j u s t a b l e

member. The

s t r i n g e d i n s t r u m e n t may f u r t h e r c o m p r i s e a

h e i g h t

a d j u s t

m e n t

mechanism

5 6 )

f o r

a d j u s t i n g t h e d i s t a n c e

b e t W e e n

t h e

t o p s u r f a c e a n d t h e p l a n e o f t h e s t r i n g s .

A c c o r d i n g l y ,

t h e g e n e r a l

o b j e c t

o f t h e

p r e s e n t

i n v e n t i o n

i s

t o p r ov i d e a n

i m p r o v e d

s t r i n g e d i n s t r u m e n t W h i c h a l l o W s f o r

g r e a t e r s us t a i n o f

t h e

n o t e s

p l a y e d on t h e i n s t r u m e n t .

A n o t h e r o b j e c t i s t o p r o vi d e a n

i m p r o v e d s t r i n g e d i n s t r u

ment i n Which t h e

i n s t r u m e n t ’ s

t o p - n u t and

b r i d g e

a r e

m e c h a n i c a l l y c o n n e c t e d by a

t r u s s r o d

a s s e m b l y .

A n o t h e r o b j e c t i s

t o

p r o v i d e a s t r i n g e d i n s t r u m e n t

i n

Which t h e t o p - n u t a n d b r i d g e a r e

c o n n e c t e d

by a t r u s s

t h a t

i n t e g r a t e s them i n t o a s i n g l e m e c h a n i c a l u n i t a n d

p r o v i d e s

a

pathWay

f o r

t h e

movement o f e n e r g y a n d

v i b r a t i o n s .

A n o t h e r

o b j e c t i s

t o

p r o v i d e a s t r i n g e d i n s t r u m e n t

i n

Which t h e

t r u s s

r o d e X t e n d s beyond t h e t o p - n u t o f

t h e

i n s t r u m e n t .

Another

o b j e c t

i s

t o

p r o v i d e

a

s t r i n g e d

i n s t r u m e n t W i t h

a

t r u s s r o d

t e n s i o n i n g a s s e m b l y W h i c h t e n s i o n s

a g a i n s t t h e

t o p - n u t .

Another

o b j e c t

i s

t o p r o v i d e a s t r i n g e d i n s t r u m e n t W i t h a

t r e m o l o i n m e c h a n i c a l communication W i t h t h e t r u s s

r o d .

Another o b j e c t i s t o p r o v i d e a s t r i n g e d i n s t r u m e n t

W i t h

a

t r e m o l o s p r i n g t h a t i s c o m p r e s s e d

t o d e c r e a s e

t e n s i o n i n t h e

s t r i n g s o f t h e i n s t r u m e n t .

A n o t h e r

o b j e c t i s

t o

p r o v i d e a s t r i n g e d

i n s t r u m e n t

W i t h t h e

t i l t a n d h e i g h t o f t h e e l e c t r o n i c p i c k - u p f o r t h e i n s t r u m e n t

a d j u s t a b l e

r e l a t i v e t o

t h e s t r i n g s o r b o d y , r e s p e c t i v e l y .

Another o b j e c t i s t o p r o v i d e a s t r i n g e d i n s t r u m e n t W i t h a

i m p r o v e d

c o n n e c t i o n

b e t W e e n t h e n e c k

a n d

body o f t h e

i n s t r u m e n t .

Page 11: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 11/14

US 6 , 8 8 4 , 9 3 2 B2

3

BRIEF DESCRIPTION OF THE DRAWINGS

F I G .

1 i s a p e r s p e c t i v e v i e W o f

t h e

i m p r o v e d s t r i n g e d

i n s t r u m e n t .

F I G . 2 i s a t o p

p l a n

vieW

o f

t h e

i m p r o v e d

i n s t r u m e n t

shoWn

i n

F I G . 1 .

F I G .

3 s a

f r o n t

e l e v a t i o n

o f

t h e i n s t r u m e n t

shoWn

i n

F I G .

1

F I G . 4 i s

a

b o t t o m p l a n vieW o f t h e

i n d i c a t e d

p o r t i o n 4—4

o f F I G . 3 .

F I G .

5 i s

a

p a r t i a l

l o n g i t u d i n a l v e r t i c a l

s e c t i o n a l

vieW

o f

t h e i n s t r u m e n t

shoWn n

F I G . 2 , t a k e n g e n e r a l l y

on

i n e 5—5

o f F I G .

2 .

F I G .

6

i s a n

e n l a r g e d d e t a i l e d vieW o f

t h e t r e m o l o

a s s e m b l y shoWn i n

F I G .

5 , t a k e n W i t h in

t h e

i n d i c a t e d

c i r c l e

o f F I G .

5 .

F I G .

7 s a

p a r t i a l t r a n s v e r s e

v e r t i c a l

s e c t i o n a l vieW o f t h e

i n s t r u m e n t shoWn n F I G . 3 , t a k e n

g e n e r a l l y o n

l i n e 7—7 f

F I G .

3 .

F I G .

8

i s

a n e n l a r g e d

d e t a i l e d

vieW o f

t h e neck

mount

shoWn

i n

F I G . 5 , t a k e n W i t h i n

t h e

i n d i c a t e d

c i r c l e

o f F I G . 5 .

F I G .

9 i s

a p a r t i a l

t r a n s v e r s e

v e r t i c a l s e c t i o n a l vieW o f t h e

neck mount shoWn

i n F I G .

8 , t a k e n

g e n e r a l l y

on

l i n e

9—9

o f F I G . 8 .

FIG.

10 i s

a

t r a n s v e r s e

v e r t i c a l

s e c t i o n a l vieW o f t h e

i n s t r u m e n t

shoWn

i n F I G . 3 , t a k e n g e n e r a l l y

on

i n e

1 0— 1 0

o f

F I G .

3 .

F I G . 1 1 i s a n

e n l a r g e d d e t a i l e d vieW

o f

t h e t o p - n u t

a s s e m b l y shoWn i n F I G .

5 , t a k e n W i t h in t h e

i n d i c a t e d c i r c l e

o f F I G .

5 .

F I G . 1 2 i s a n e n l a r g e d d e t a i l e d

vieW

o f t h e p i c k - u p

shoWn

i n F I G . 2 , t a k e n W i t h i n

t h e i n d i c a t e d c i r c l e

o f F I G . 2 .

F I G .

1 3 i s

a

p a r t i a l

v e r t i c a l

s e c t i o n a l

vieW

o f

t h e

p i c k - u p

shoWn

i n

F I G .

1 2 , t a k e n g e n e r a l l y on l i n e 1 3 —13 o f

F I G .

1 2 .

F I G .

14

s

a s i d e

e l e v a t i o n

o f

t h e

i n d i c a t e d p o r t i o n

1 4 —14

o f

F I G .

2 .

F I G .

15

i s

a p a r t i a l t r a n s v e r s e v e r t i c a l s e c t i o n a l

vieW o f

t h e t o p - n u t

shoWn

n F I G .

1 1 , t a k e n

g e n e r a l l y on i n e 1 5 — 1 5

o f

F I G . 1 1 .

DESCRIPTION OF THE PREFERRED

EMBODIMENT

At t h e

o u t s e t ,

i t

s h o u l d b e c l e a r l y u n d e r s t o o d

t h a t

l i k e

r e f e r e n c e

numerals

a r e

intended t o

i d e n t i f y t h e

same

s t r u c

t u r a l e l e m e n t s , p o r t i o n s o r s u r f a c e s , c o n s i s t e n t l y t h r o u g h o u t

t h e

s e v e r a l

d r a W i n g

? g u r e s ,

a s s u c h

e l e m e n t s , p o r t i o n s o r

s u r f a c e s m a y

b e

f u r t h e r

d e s c r i b e d

o r

e X p l a i n e d

by t h e

e n t i r e

W r i t t e n s p e c i ? c a t i o n , o f Which h i s d e t a i l e d d e s c r i p t i o n i s a n

i n t e g r a l p a r t . U n l e s s o t h e r W i s e i n d i c a t e d , t h e d r a W i n g s a r e

i n t e n d e d

t o

b e

r e a d

( e . g . ,

c r o s s - h a t c h i n g ,

a r r a n g e m e n t

o f

p a r t s ,

p r o p o r t i o n , d e g r e e ,

e t c . )

t o g e t h e r

W i t h t h e

s p e c i ? c a t i o n , and

a r e

t o

be

c o n s i d e r e d

a

p o r t i o n o f t h e e n t i r e

W r i t t e n d e s c r i p t i o n

o f

t h i s i n v e n t i o n . As u s e d

i n

t h e

f o l l o W

i n g d e s c r i p t i o n , t h e t e r m s “ h o r i z o n t a l ” , “ v e r t i c a l ” , “ l e f t ” ,

“ r i g h t ” , “ u p ” a n d “ d o W n ” , a s W e l l a s

a d j e c t i v a l

a n d a d v e r b i a l

d e r i v a t i v e s

t h e r e o f ( e . g . ,

“ h o r i z o n t a l l y ” ,

“ r i g h t W a r d l y ” ,

“ u p W a r d l y ” , e t c . ) , s i m p l y

r e f e r

t o t h e o r i e n t a t i o n o f t h e

i l l u s t r a t e d

s t r u c t u re a s t h e p a r t i c u l a r

d r a W i n g

? g u r e

f a c e s

t h e

r e a d e r . S i m i l a r l y , t h e t e r m s “ i n W a r d l y ” a n d “ o u t W a r d l y ”

g e n e r a l l y

r e f e r t o

t h e

o r i e n t a t i o n

o f

a s u r f a c e r e l a t i v e t o i t s

a X i s o f

e l o n g a t i o n , o r

a X i s o f r o t a t i o n , a s a p p r o pr i a t e .

R e f e r r i n g noW o t h e

d r a W i n g s

a n d , more p a r t i c u l a r l y , t o

F I G . 1 t h e r e o f , t h i s i n v e n t i o n

p r o v i d e s a

m u s i c a l

i n s t r u m e n t

1 5

25

35

40

45

55

6 5

4

h a v i n g i m p r o v e d s u s t a i n c h a r a c t e r i s t i c s , t h e p r e s e n t l y p r e

f e r r e d embodiment o f

Which

i s

g e n e r a l l y i n d i c a t e d

a t

1 5 .

S u s t a i n means t h e l e n g t h o f t i m e t h e g u i t a r ri n g s a f t e r

a

n o t e

i s p l a y e d

and s a

f u n c t i o n

o f t h e r a t e a t Which a

n o t e

decays

a f t e r i t i s p l a y e d .

As

shoWn

n F I G S . 1 — 3 , i n s t r u m e n t 1 5 i s

a n

e l e c t r i c g u i t a r

g e n e r a l l y

h a v i n g

a

body

1 6 a n d

a

n e c k

1 8 .

Body

1 6

i s

a

c o n t o u r e d Wooden member h a v i n g a number o f c a v i t i e s a n d

t a p e d h o l e s formed o

r e c e i v e c e r t a i n

e l e m e n t s o f h a r d W a r e .

A

r i d g e

20

i s

mounted

t o

body 1 6 .

Neck 1 8

i s a

Wooden e l e m e n t s e p a r a b l e f r o m body 1 6 .

Neck

1 6

i n c l u d e s

h e a d

e n d

5 8 ,

W h i c h s u p p o r t s t u n i n g p o s t s

5 9 , a h e e l

end

100

s e t

i n t o body 1 6 , a n d a f r e t b o a r d 1 0 1 .

F r e t b o a r d

101 i n c l u d e a

number o f

f r e t s 102 p o s i t i o n e d t o

p r o t r u d e a b o v e t h e f r e t b o a r d s u r f a c e a n d

s p a c e d

a t

p r e c i s e

d i s t a n c e s a l o n g f r e t b o a r d

101

s o a s t o c o r r e s p o n d W i t h n o t e s

of a

musical s c a l e .

A p l u ra l i t y o f s t r i n g s 2 3 e X t e n d

f r o m t u n i n g

p o s t s 5 9 o v e r

t o p - n u t 1 9 t o

b r i d g e

2 0 . S t r i n g s

2 3

a r e

i n

a g e n e r a l l y p a r a l l e l

a r r a n g e m e n t

a n d a r e i n t e n s i o n betWeen

p o s t s

59 a n d

a n c h o r s i n b r i d g e

2 0 .

S p r i n g s

2 3

a r e t u n e d

b y

a d j u s t i n g

t u n i n g

p o s t s 5 9 . S t r i n g s 2 3

e X t e n d

o v e r t h e s u r f a c e o f

f r e t b o a r d 1 0 1

a t

a c o n t r o l l e d h e i g h t , t y p i c a l l y b e i n g c l o s e r

t o

f r e t b o a r d 101 n e a r t o p -n u t

19

t h a n t h e y

a r e

n e a r body 1 6 . As

d e s c r i b e d

i n f u r t h e r

d e t a i l

b e l o W , t o p - n u t 1 9

a l l o W s

f o r

t h e

a d j u s t m e n t o f t h e h e i g h t o f s t r i n g s 2 3 a b o v e f r e t b o a r d 1 0 1

n e a r t o p - n ut 1 9 .

A i c k - u p

4 5

i s l o c a t e d

b e n e a t h

s t r i n g s

2 3

o n body 1 6

betWeen

h e e l 100 a n d b r i d g e 2 0 . As f u r t h e r

shoWn

i n F I G .

1 5 ,

a

volume c o n t r o l

6 2 i s

r e c e s s e d

i n t o

body 1 6 f o r

c o n t r o l l i n g t h e v o l u m e o f

p i c k - u p

4 5 . An u t l e t j a c k

6 1 i s s e t

i n t o

b o d y 1 6

f o r c o n n e c t i n g

p i c k - u p

4 5 ,

v o l u m e c o n t r o l

6 2 ,

and

o t h e r

c o n v e n t i o n a l

c o n t r o l s t o a s u i t a b l e a m p l i ? e r .

G u i t a r s knoWn i n

t h e p r i o r

a r t

h a v e

s t r i n g s s u p p o r t e d

b y

a n i n d e p e n d e n t

t o p - n u t

on h e neck and a b r i d g e on t h e

b o d y ,

t h e

t o p - n u t a n d b r i d g e

s e p a r a t e d

by

a

mass

o f W o o d , W h i c h

c a u s e s a

dampening

f f e c t .

As

shoWn n F I G . 5 ,

g u i t a r

1 5 h a s

a

t r u s s

21

b e t W e e n b r i d g e 20 a n d

t o p - n u t

1 9 t h a t i n t e g r a t e s

b r i d g e 20 a n d

t o p - n u t

1 9 a n d p r o v i d e s a more e f ? c i e n t

pathWay

f o r

t h e

movement o f

e n e r g y

a n d

v i b r a t i o n s .

Truss

21

i n c l u d e s

a t r u s s

r o d

2 2 .

T r u s s rod

22 i s a s o l i d

c y l i n d r i c a l member

e l o n g a t e d a l o n g

a X i s

X—X a n d i s

t h r e a d e d

a t

b o t h e n d s .

T r u s s r o d

22

engages

t o p - n u t

19 a t

c o n n e c t i o n

104

a n d e n g a g e s

b r i d g e 20 a t

c o n n e c t i o n

1 0 3 .

One t h r e a d e d

end o f t r u s s

r o d 22 engages a t r e m o l o t e n s i o n

n u t 28

and

t h e o t h e r t h r e a d e d

end

o f

t r u s s

r o d 22 engages a

t r u s s r o d a d j u s t m e n t n u t 3 8 .

As

s h o W n , t r u s s r o d 22 e x t e n d s

t h r o u g h a l i g n e d l o n g i t u d i n a l l y e x t e n d i n g t h r o u g h b o r e s i n

n e c k

1 8 a n d body

1 6 .

F I G . 6

i s a n

e n l a r g e d d e t a i l e d vieW

o f c o n n e c t i o n

1 0 3 ,

t a k e n W i t h i n

t h e i n d i c a t e d c i r c l e

o f

F I G . 5 . As shoWn i n

F I G S .

4 — 7 ,

c o n n e c t i o n 1 0 3 g e n e r a l l y c o m p r i s e s

t r e m o l o

t e n s i o n n u t 2 8 ,

t r e m o l o

b l o c k

2 9 ,

t r e m o l o

t e n s i o n s p r i n g 3 0 ,

a n d

b r i d g e b a s e 2 4 .

Tremolo

t e n s i o n n u t 28 i s

a

c y l i n d r i c a l r i n g - s h a p e d annu

l a r s t r u c t u r e

e l o n g a t e d a l o n g

a X i s

X—X n d

bou nded by

a n

o u t W a r d l y - f a c i n g h o r i Z o n t a l

c y l i n d r i c a l

s u r f a c e 1 0 5 , a

r i g h t Wa r d l y - f a c i n g a n n u l a r

v e r t i c a l s u r f a c e

1 0 6 ,

a

t h r e a d e d

i n W a r d l y - f a c i n g h o r i Z o n t a l

c y l i n d r i c a l

s u r f a c e

1 0 7 , a n d a

l e f t W a r d l y - f a c i n g

a n n u l a r

v e r t i c a l s u r f a c e 1 0 8 . The l e f t e n d

p o r t i o n 31 o f

t r u s s r o d

22 i s

t h r e a d e d a n d

s u r f a c e

107

i s

p r o v i d e d

W i t h

t h r e a d s

c o r r e s p o n d i n g

t o p o r t i o n 3 1 .

A c c o r d i n g l y , r o t a t i o n o f t r e m o l o t e n s i o n n u t 28 c a u s e s a X i a l

movement o f

t e n s i o n

n u t

28

a l o n g

p o r t i o n 31

o f t r u s s r o d

2 2 .

Depending up on t h e d i r e c t i o n

o f

r o t a t i o n

o f

t e n s i o n n u t

2 8 , r o t a t i o n

o f

t e n s i o n n u t

28

i n c r e a s e s

o r

d e c r e a s e s t h e b i a s

Page 12: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 12/14

US 6 , 8 8 4 , 9 3 2 B2

5

o f

s p r i n g

3 0 .

T h u s , t h e

f o r c e

e x e r t e d by s p r i n g

3 0

i s a

f u n c t i o n o f t h e

l o n g i t u d i n a l p o s i t i o n

o f t e n s i o n n u t 2 8 on

t r u s s

r o d 2 2 .

B a s e p l a t e

24 i s a r e c t a n g u l a r

p l a t e

member h a v i n g a

b o t t o m s u r f a c e s u b s t a n t i a l l y p a r a l l e l t o t h e t o p s u r f a c e o f

b o d y 1 6 . T h e r i g h t e d g e o f

b a s e

p l a t e 2 4 i s

a t t a c h e d

t o b o d y

1 6 W i t h

b r i d g e

m o u n t i n g

s c r e W s

6 5 .

Body

1 6

i n c l u d e s

a

c a v i t y 70

e x t e n d i n g

t r a n s v e r s e t o

a x i s x—x. B a s e p l a t e 24

o v e r l a y s

a n d

p a r t i a l l y c o v e r s

t h e

t o p o p e n i n g o f c a v i t y

7 0 .

Block 29 i s

s e c u r e d

t o t h e u n d e r s i d e o f p l a t e 24 a n d

e x t e n d s i n t o

c a v i t y 7 0 .

B l o c k

29 i s a r e c t a n g u l a r member

h a v i n g a r i g h t W a r d l y - f a c i n g t r a n s v e r s e v e r t i c a l p l a n a r s u r

f a c e

1 0 8 a n d a l e f t W a r d l y - f a c i n g

t r a n s v e r s e

v e r t i c a l p l a n a r

s u r f a c e

1 0 9 . A

e r t i c a l

s l o t 7 3 e x t e n d s

t h r o u g h

b l o c k

29

p e r p e n d i c u l a r t o s u r f a c e s 108 a n d 1 0 9 . The W i d t h o f s l o t 7 3

i s

s l i g h t l y g r e a t e r t h a n t h e

d i a m e t e r

o f t r u s s r o d 22 a n d

i s

l e s s

t h a n

t h e

i n s i d e

d i a m e t e r

o f

t h e c o i l s i n s p r i n g 3 0 .

T r u s s r o d 2 2 e x t e n d s t h r o u g h

s l o t

7 3 p e r p e n d i c u l a r

t o

s u r f a c e s 1 0 8

a n d

1 0 9 o f b l o c k 2 9 . As s h o W n , t h e

l e f t

s u r f a c e

109

o f

b l o c k

29

and t h e r i g h t

s u r f a c e

106 o f n u t

28 a r e

g e n e r a l l y

i n a p a r a l l e l o r i e n t a t i o n . S p r i n g

3 0

i s p o s i t i o n e d

b e t W e e n a n d

s u p p o r t e d

by

s u r f a c e s

1 0 6 a n d 1 0 9

r e s p e c

t i v e l y .

S p r i n g 30 i s a

c o i l e d

s p r i n g

h a v i n g

a

c e n t r a l a x i s o f

e l o n g a t i o n x—x. T r u s s r o d 22 e x t e n d s t h r o u g h

t h e

c e n t e r o f

s p r i n g

3 0 .

As i n d i c a t e d , t h e t e n s i o n i n s p r i n g 3 0

may

b e

a d j u s t e d

W i t h

r o t a t i o n

o f a d j u s t m e n t

n u t 28

a b o u t

a x i s

x—x.

When

u t

28 i s r o t a t e d f o r a x i a l movement o t h e r i g h t , t h e

d i s t a n c e b e t W e e n s u r f a c e s

1 0 6 a n d 1 0 9

d e c r e a s e s ,

c a u s i n g

t h e

f o r c e

e x e r t e d on

b l o c k

29

t o

i n c r e a s e .

A l t e r n a t i v e l y ,

When

n u t 28 i s r o t a t e d

f o r a x i a l

movement t o t h e l e f t , t h e

d i s t a n c e

b e t W e e n s u r f a c e s 1 0 6 a n d 1 0 9

i n c r e a s e s

c a u s i n g

t h e b i a s e x e r t e d on

b l o c k

29

t o

d e c r e a s e . I n t h e p r e f e r r e d

e m b o d i m e n t ,

s p r i n g 3 0

i s i n c o m p r e s s i o n b e t W e e n s u r f a c e s

106 a n d

1 0 9 .

B r i d g e

2 0 i n c l u d e s

t r e m o l o

6 0 ,

s e c t i o n a l

s a d d l e s 2 5 ,

i n t o n a t i o n t e n s i o n s c r e W s 6 8 , i n t o n a t i o n t e n s i o n s p r in g s 6 7

a n d

s a d d l e h e i g h t a d j u s t m e n t

s c r e W s 6 9 . The l e f t e d g e o f

p l a t e

2 4 h a s a n u p W a r d l y

c u r v e d

? a n g e p o r t i o n 6 6 . B a s e

p l a t e

24

s

s e c u r e d

t o

body

1 6 W i t h

m o u n t i n g

s c r e W s

6 5

s u c h

a s t o

p e r m i t

l i m i t e d p i v o t a l

movement o f b a s e p l a t e

2 4 .

S a d d l e h e i g h t

a d j u s t m e n t s c r e W s 6 9 , o n e f o r e a c h o f s t r i n g s

2 3 ,

e x t e n d f o r W a r d l y t h r o u g h

s a d d l e s 25 a n d a r e

s c r e W

t h r e a d e d i n t o s e c t i o n a l s a d d l e s e l e m e n t s 2 5 . H e i g h t a d j u s t

ment s c r e W s 6 9 b e a r

a g a i n s t

t h e

t o p

o f b a s e

p l a t e

2 4 .

Block

2 9 i s

p r o v i d e d W i t h a p l u r a l i t y

o f v e r t i c a l l y -e x t e n d i n g b o re s ,

one

f o r each o f s t r i n g s 2 3 . Each s t r i n g

23

p a s s e s

o v e r

a

c o r r e s p o n d i n g s a d d l e e l e m e n t

2 5 ,

a n d i n t o a c o r r e s p o n d i n g

b o r e

by Way o f

a

h o l e i n

b a s e

p l a t e 2 4 . The end o f e a c h o f

s t r i n g s 23

c o n n e c t s

t o

a n a n c h o r

e l e m e n t i n

b l o c k

2 9 .

Atremolo

arm 26

i s

s e c u r e d t o t h e s i d e o f b a s e p l a t e 2 4 .

I n n o r m a l p l a y i n g p o s i t i o n ,

arm

2 6 i s

d i s p o s e d

a b o v e t h e

p l a n e o f s t r i n g s 23

a n d

beloW t h e

l o W e s t

s t r i n g 23 s o a s t o

b e

r e c e i v e d

i n

t h e

palm

o f

t h e

p l a y e r s

hand

When

i n a

p o s i t i o n

t o s t r i k e t h e

s t r i n g s . I f arm 26

s

p i v o t e d

t o o r aWay

f r o m t h e

body o f

t h e

p l a y e r d u r i n g v i b r a t i o n o f a n y o r a l l

t h e

s t r i n g s , a c o n v e n t i o n a l t r e m o l o e f f e c t W i l l

b e

p r o d u c e d by

e a c h o f t h e v i b r a t i n g

s t r i n g s . With

movement o f

n u t 2 8 ,

t h e

t e n s i o n i n s p r i n g 30 c a n

be

a d j u s t e d t o

a s s u r e

t h a t u n l e s s

t r e m o l o arm 28 i s manually

o s c u l a t e d

t h e r e i s

n o

t e n d e n c y

f o r

b l o c k

29 t o v i b r a t e When

t h e

s t r i n g s a r e

p l u c k e d . T h u s ,

no tremolo e f f e c t

o c c u r s e x c e p t

a t t h e W i l l and d i r e c t i o n

o f

t h e

p l a y e r .

A c c e s s

t o c a v i t y

7 0 i s p r o v i d e d t h r o u g h a n o p e n i n g i n t h e

u n d e r s i d e o f

body

1 6 . When i n u s e , t h i s o p e n i n g i s c o v e r e d

W i t h t r e m o l o c o v e r p l a t e

7 6 .

Tremolo c o v e r p l a t e 76 i s

a t t a c h e d t o t h e

u n d e r s i d e

o f body

16

W i t h t r e m o l o c o v e r

10

25

35

40

45

55

6 5

6

p l a t e s c r e W s

7 8 . When

t h e p l a y e r

d e s i r e s

t o

a d j u s t

t h e

f o r c e

o f s p r i n g 3 0 , c o v e r p l a t e 76 i s removed t o a l l o W

a c c e s s

a n d

a p p r o p r i a t e r o t a t i o n

o f

n u t 28

a n d

movement o f n u t 28

a l o n g

t r u s s

r o d 2 2 .

F I G . 1 1 i s a n e n l a r g e d d e t a i l e d vieW o f c o n n e c t i o n 1 0 4 ,

t a k e n W i t h i n t h e i n d i c a t e d c i r c l e o f

F I G .

5 . As shoWn i n F I G .

5

a n d F I G .

1 1 ,

c o n n e c t i o n 1 0 4

g e n e r a l l y

c o m p r i s e s

t o p - n u t

1 9 , W a s h e r 6 4 a n d t r u s s r o d a d j u s t m e n t n u t

3 8 .

T r u s s r o d a d j u s t m e n t n u t 3 8 i s a c y l i n d r i c a l s h a p e d

s t r u c t u r e e l o n g a t e d a l o n g a x i s x—x n d

g e n e r a l l y bounded

by

a r i g h t W a r d l y - f a c i n g

a n n u l a r v e r t i c a l

s u r f a c e 1 1 1 ,

a n

o u t W a r d l y - f a c i n g h o r i Z o n t a l c y l i n d r i c a l s u r f a c e

1 1 2 ,

a

l e f t W a r d l y - f a c i n g

a n n u l a r

v e r t i c a l s u r f a c e 1 1 3 , a

t h r e a d e d

i n W a r d l y - f a c i n g h o r i Z o n t a l

c y l i n d r i c a l

s u r f a c e 1 1 4 ,

a n d a

l e f t W a r d l y - f a c i n g

c i r c u l a r v e r t i c a l

p l a n a r s u r f a c e

1 1 5 .

T h e

r i g h t e n d p o r t i o n 35 o f t r u s s r o d 22 i s

t h r e a d e d

a n d s u r f a c e

1 1 4 i s p r o v i d e d W i t h

t h r e a d s c o r r e s p o n d i n g

t o

p o r t i o n

3 5 .

T o p - n u t

1 9

i s

g e n e r a l l y

a

r e c t a n g u l a r s o l i d

member

s p l i t

h o r i Z o n t a l l y

i n t o

a n

u p p e r

p o r t i o n

4 2

a n d

a

l o W e r p o r t i o n

4 1 .

Upper p o r t i o n

4 2 i s

b o u n d e d

by

r i g h t

v e r t i c a l s u r f a c e , a l e f t

v e r t i c a l

s u r f a c e ,

a bottom

h o r i Z o n t a l s u r f a c e ,

a

f r o n t

v e r t i c a l

s u r f a c e ,

a r e a r v e r t i c a l

s u r f a c e

n o t

shoWn)

a n d

a

t o p

h o r i Z o n t a l s u r f a c e . T o p s u r f a c e o f

p o r t i o n

4 2

h a s

l o n g i t u d i

n a l l y

e x t e n d i n g

g r o o v e s c u t i n t o i t ,

o n e g r o o v e

f o r e a c h

o f

s t r i n g s 2 3 .

LoWer p o r t i o n

4 1 i s

bounded by a

r i g h t

v e r t i c a l

s u r f a c e

1 1 6 ,

a l e f t v e r t i c a l

s u r f a c e 1 1 7 ,

a

f r o n t

v e r t i c a l s u r f a c e , a

r e a r

v e r t i c a l s u r f a c e n o t

s h o W n ) ,

a

b o t t o m

h o r i Z o n t a l

s u r f a c e ,

a

t o p h o r i Z o n t a l s u r f a c e , a n d a n i n W a r d l y - f a c i n g h o r i Z o n t a l

c y l i n d ri c a l s u r f a c e 1 1 8 .

S u r f a c e 1 1 8 d e ? n e s

a

t h r o u g h

p a s s a g e 35

betWeen

s u r f a c e s 1 1 6

a n d 1 1 7 . The

d i a m e t e r

o f

p a s s a g e 35

i s

s l i g h t l y

g r e a t e r

t h a n t h e

d i a m e t e r

o f t r u s s r o d

2 2 . The

e n d

o f t r u s s

r o d 22 e x t e n d s t h r o u g h p a s s a g e 35

s u c h

t h a t a t h r e a d e d

p o r t i o n

35

o f

t r u s s r o d 35 e x t e n d s t o t h e r i g h t

o f

s u r f a c e 1 1 6 o f t o p - n u t 1 9 .

T o p - n u t

19 i s

i n s e t i n

a t r a n s v e r s e s l o t i n

neck 1 8 .

A

l o n g i t u d i n a l c y l i n d r i c a l

b o r e

8 0 i n n e c k

1 8

h o u s e s W a s h e r

6 4 ,

t e n s i o n a d j u s t m e n t

n u t

3 8

a n d

t h e

e n d p o r t i o n 3 5

o f

t r u s s

r o d 2 2 . Washer 64

s

p l a c e d on t r u s s r o d 22

betWeen

s u r f a c e

1 1 6

o f p o r t i o n

4 1

o f t o p - n u t

1 9

a n d s u r f a c e

1 1 3

o f t e n s i o n

a d j u s t m e n t n u t

3 8 .

L e f t

v e r t i c a l s u r f a c e 1 1 7 o f l o W e r

p o r t i o n

4 1

a b u t s t h e

r i g h t W a r d l y - f a c i n g

v e r t i c a l s u r f a c e

o f

t h e s l o t

i n

n e c k

1 8 .

T h u s , l o W e r p o r t i o n 4 1 b e a r s a g a i n s t

a v e r t i c a l

s u r f a c e

o f n e c k 1 8 s u c h t h a t l o W e r p o r t i o n

4 1

i s r e s t r a i n e d

f r o m

moving t o

t h e

l e f t . T h i s

a l l o W s

f o r

t h e

t e n s i o n i n g o f

t r u s s r o d 22

W i t h r o t a t i o n

o f a d j u s t m e n t n u t 3 8 .

A d j u s t m e n t

n u t

3 8 e n g a g e s t h e t h r e a d e d e n d

p o r t i o n

3 5 o f

t r u s s r o d 2 2 t h a t e x t e n d s t o t h e r i g h t o f

s u r f a c e

1 1 6 o f t o p - n u t

1 9 .

A c c o r d i n g l y ,

r o t a t i o n

o f

a d j u s t m e n t n u t 3 8 a b o u t a x i s

x—x c a u s e s a x i a l movement o f

a d j u s t m e n t

n u t 38 a l o n g

p o r t i o n 3 5 o f

t r u s s

r o d

2 2 .

Depending upon t h e

d i r e c t i o n o f

r o t a t i o n ,

r o t a t i o n

o f

adjustment

n u t

38

c a u s e s

t h e

r i g h t W a r d l y - f a c i n g

v e r t i c a l c i r c u l a r

p l a n a r s u r f a c e

1 1 9

o f

t r u s s rod 22

t o

m o v e toWards o r aWay from s u r f a c e 1 1 5 of

a d j u s t m e n t

n u t

3 8 . Such r o t a t i o n

o f

a d j u s t m e n t n u t

3 8

i n c r e a s e s o r d e c r e a s e s t h e t e n s i o n i n

t r u s s

r o d

2 2 .

S i n c e

t r u s s

r o d 22

a c t s

i n t h e p r e f e r r e d

embodiment

t o c o u n t e r b a l a n c e

t h e

? e x

o f n e c k 1 8

c a u s e d

b y

t h e p u l l o f

s t r i n g s

2 3 ,

s u c h

c o u n t e r b a l a n c i n g

f o r c e c a n b e a d j u s t e d W i t h r o t a t i o n

o f

a d j u s t m e n t

n u t 38

a b o u t

a x i s

x—x.

As

i n d i c a t e d ,

a r e c e s s 40

i s

p r o v i d e d

t o a l l o W

f o r t h e r o t a t i o n

o f a t t a c h m e n t

38

W i t h

a p r o p e r l y c o n ? g u r e d

t o o l .

U p p e r p o r t i o n 4 2 o f t o p - n u t 1 9 i s

a b l e

t o b e a d j u s t e d

v e r t i c a l l y

r e l a t i v e t o l o W e r p o r t i o n 4 1

W i t h r o t a t i o n

o f

t h r e a d e d

u p p e r p i n s 44 a n d 8 1 .

As

shoWn

n F I G .

1 5 , u p p e r

a n d l o W e r p o r t i o n s 4 1 a n d 4 2 i n c l u d e tWo t h r e a d e d b o r e s

Page 13: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 13/14

US 6 , 8 8 4 , 9 3 2 B2

7

e x t e n d i n g

v e r t i c a l l y

o n e i t h e r

s i d e

o f t h r o u g h p a s s a g e

3 4 . As

i n d i c a t e d , t h e

p o r t i o n o f

t h e s e b o r e s , 8 1 a n d 8 4 r e s p e c t i v e l y ,

n e a r

t h e

t o p s u r f a c e

o f p o r t i o n 41

a r e

n o t

t h r e a d e d and have

a d i a m e t e r t h a t i s g r e a t e r

t h a n

t h e o u t s i d e

t h r e a d e d

d i a m e t e r

o f

p i n s 8 1 , 4 4 , 8 2 a n d 4 3 .

P i n s

4 1 a n d 8 1 a r e

i n t h r e a d e d

e n g a g e m e n t W i t h

u p p e r p o r t i o n 4 2 o f t o p - n u t 1 9 , a n d

p i n s

4 3

a n d 8 2 a r e i n t h r e a d e d engagement W i t h l o W e r

p o r t i o n 4 1

o f

t o p - n u t 1 9 .

The

l o W e r

r o u n d e d

s u r f a c e

o f p i n

4 4

i s

i n

b e a r i n g

r e l a t i o n s h i p W i t h

t h e u p p e r

r o u n d e d s u rf a c e o f

p i n

4 3 , a n d

t h e

l o W e r

r o u n d e d s u r fa c e o f p i n 8 1 i s i n b e a r i n g r e l a t i o n s h i p

W i t h

t h e

u p p e r

r o u n d e d s u r f a c e

o f p i n

8 2 .

P i n s

44

a n d 4 3

a n d

8 1

a n d 8 2 , r e s p e c t i v e l y , b e a r

a g a i n s t

e a c h o t h e r W i t h i n b o r e

p o r t i o n s 8 3 a n d

8 4 , r e s p e c t i v e l y .

A c c o r d i n g l y ,

t h e

s p a c e 8 5

b e t W e e n

t h e b o t t o m h o r i Z o n t a l s u r f a c e

o f

p o r t i o n 4 1 a n d t h e

t o p h o r i Z o n t a l s u r f a c e o f 4 2 m a y b e a d j u s t e d s u c h

t h a t

t h e

h e i g h t o f p o r t i o n 4 2 a b o v e f r e t b o a r d

1 0 1

may b e a d j u s t e d .

To

i n c r e a s e

t h e

d i s t a n c e

8 5 b e t W e e n u p p e r p o r t i o n 4 2 a n d

l o W e r p o r t i o n

4 1 , a n d t h e r e b y i n c r e a s e t h e

h e i g h t

o f s t r i n g s

23 above f r e t b o a r d 1 0 1 , p i n s

44 a n d 81

a r e r o t a t e d

i n

a

c l o c k W i s e

d i r e c t i o n

l o o k i n g doWn

o n

t h e t o p o f g u i t a r 1 5 )

a b o u t t h e i r v e r t i c a l

a x e s .

T h i s p r o v i d e s movement o f p o r t i o n

41

i n a n

upWard d i r e c t i o n r e l a t i v e

t o

p o r t i o n

4 1 , a s shoWn i n

F I G .

1 5 , t h e r e b y

i n c r e a s i n g d i s t a n c e

8 5 a n d

r a i s i n g

s t r i n g s

2 3 .

T h i s

c o n ? g u r a t i o n

o f t o p - n ut

1 9

a l l o W s

f o r

n o t

o n l y

t h e

a d j u s t m e n t o f t h e h e i g h t o f

s t r i n g s

2 3

a b o v e

f r e t b o a r d 1 0 1 ,

b u t

a l s o

f o r e a s y r e p l a c e m e n t o f u p p e r

p o r t i o n

4 2 When

u p p e r p o r t i o n

4 2 i s o v e r l y

Worn d u e t o

t h e

b e a r i n g o f

s t r i n g s

2 3 i n t h e

g r o o v e s

i n u p p e r p o r t i o n 4 2 . F u r t h e r m o r e , p i n s 4 3 ,

8 2 , 4 4 a n d 8 1

m a y

b e

e a s i l y

r e p l a c e d When

W o r n .

As shoWn i n F I G .

3 and

F I G . 1 1 , neck 1 8 i n c l u d e s a

s u p p o r t member

1 2 0

mounted

t o

h e a d s t o c k

5 8 .

S u p p o r t

member

1 2 0

c o m p e n s a t e s f o r a n y l o s s o f

s t r e n g t h

i n n e c k 1 8

c a u s e d

b y t h e i n c r e a s e d

d e p t h

o f t o p - n u t 1 9 s e t i n t o n e c k 1 8

a n d b r a c e s a g a i n s t

l a t e r a l movement o f

t o p - n u t 1 9 , p a r t i c u

l a r l y

l a t e r a l

movement o f u p p e r

p o r t i o n

4 2 .

F I G S .

1 2 a n d

1 3 shoW

p i c k - u p 4 5

i n t h e

p r e f e r r e d

e m b o d i m e n t . As

shoWn n

F I G S . 1 2 — 1 3 ,

p i c k - u p

4 5

i n c l u d e s

a c o n v e n t i o n a l m a g n e t i c p i c k - u p mounted on a s u p p o r t p l a t e

4 9 .

Body

1 6

i s

c o n ? g u r e d

t o

r e c e i v e

a

p o r t i o n

o f p i c k - u p

4 5

a n d i n c l u d e s

a number

o f

v e r t i c a l

h o l e s a n d s p r i n g

s e a t s f o r

r e c e i v i n g v a r i o u s s c r e W s

a n d s p r i n g s .

P l a t e 4 9

i s

p o s i t i o n e d

o v e r r e c e s s 8 8 a n d i s

h e l d

i n p l a c e by m o u n t i n g

r i n g 8 9

a n d

f o u r m o u n t i n g

r i n g s c r e W s

9 0 a — 9 0 d .

S u p p o r t p l a t e

4 9 i s

c o n ? g u r e d

t o p i v o t a b o u t

a

p i v o t l i n e

50. TWo

s p r i n g s 5 3 a n d

5 4 a r e

s e a t e d i n t h e

b a s e o f r e c e s s 88

on

s i d e 51 o f p i v o t

l i n e

5 0 .

S p r i n g s 5 3 a n d

5 4

p r o v i d e a n u p W a r d

b i a s a g a i n s t t h e

b o t t o m

s u r f a c e

o f

p l a t e

4 9

on s i d e

5 1 o f p i v o t l i n e 5 0 . A

t h r e a d e d a d j u s t m e n t b o l t 5 5 e x t e n d s t h r o u g h a c o r r e s p o n d

i n g l y

t h r e a d e d

v e r t i c a l

b o r e h o l e i n

b a s e 1 6 .

The

t o p

e n d

o f

a d j u s t m e n t

b o l t 5 5

e x t e n d s

i n t o r e c e s s 8 8

a n d

b e a r s a g a i n s t

t h e b o t t o m s u r f a c e

o f

p l a t e

8 8

o n t h e o p p o s i t e s i d e 5 2

o f

p i v o t

l i n e 5 0 f r o m s i d e 5 1 . A c c o r d i n g l y , r o t a t i o n o f b o l t 5 5

around

i t s v e r t i c a l a x i s

c a u s e s

v e r t i c a l a x i a l

movement o f

b o l t

5 5 . Depending

upon

t h e

d i r e c t i o n

o f

r o t a t i o n

o f

b o l t

5 5 ,

r o t a t i o n o f b o l t

55

i n c r e a s e s o r d e c r e a s e s t h e b i a s o f s p r i n g s

5 3

a n d

5 4 . T h u s , t h e f o r c e e x e r t e d b y s p r i n g s 5 3

a n d

5 4

i s

a f u n c t i o n o f t h e v e r t i c a l p o s i t i o n o f b o l t 5 5 . F I G .

1 3

shoWs

p l a t e

4 9 i n a n

u n t i t l e d p o s i t i o n ,

s u c h t h a t

s u r f a c e

4 6 i s

p a r a l l e l

t o t h e

p l a n e o f s t r i n g s 2 3 . H o W e v e r ,

When

b o l t 5 5

i s

r o t a t e d

s o a s t o p r o v i d e a x i a l l y v e r t i c a l

movement

upWard

a n d

t o

e x t e n d a g re a t e r p o r t i o n o f t h e end

o f

b o l t

55

i n t o

r e c e s s 8 8 , s u r f a c e 46

W i l l

t i l t f o r W a r d r e l a t i v e t o

t h e

p l a n e o f

s t r i n g s 2 3 .

A l t e r n a t i v e l y ,

i f

b o l t 55

s r o t a t e d s o a s t o p r o v i d e

a x i a l l y movement

d o W n W a r d ,

s p r i n g s 5 3

a n d

5 4 W i l l b i a s t h e

f r o n t

e d g e o f

p l a t e

4 9

i n

a n upWard d i r e c t i o n

s o

t h a t

s u r f a c e

4 6

t i l t s

backWard

e l a t i v e t o

t h e p l a n e o f s t r i n g s 2 3 . Thus t h e

a n g l e o f

t o p s u r f a c e 4 6 o f p i c k - u p 4 5 may

b e

a d j u s t e d

r e l a t i v e t o t h e p l a n e o f tWo o r

more

s t r i n g s 2 3 .

1 5

25

35

40

45

55

6 5

8

F I G .

8 and

F I G .

9

shoW

t h e c o n n e c t i o n betWeen

neck

1 8

a n d b o d y 1 6 ,

W i t h t r u s s r o d

2 2 e x t e n d i n g

t h r o u g h

t h e

c o n n e c t i o n .

H e e l

1 0 0 o f n e c k

1 8

h a s

v e r t i c a l u n t a p e r e d s i d e s

s u c h

t h a t

t h e bottom o f h e e l 100 h a s

a W i d t h

e q u a l t o

u p p e r

p a r t

o f h e e l 1 0 0 . H o W e v e r ,

body

1 6 h a s

a p o c k e t W i t h

t a p e r e d

s i d e s 1 2 1 a n d 1 2 2 s u c h t h a t t h e b o t t o m o f p o c k e t 9 4

h a s a

W i d t h

l e s s t h e n t h e W i d t h

a t

t h e

t o p

o f p o c k e t 9 4 . T h i s

a l l o W s

f o r s n u g

s e a t i n g

o f h e e l

1 0 0 i n

t h e t a p e r e d p o c k e t 9 4

o f body

1 6 .

Neck

1 8 i s r e m o v a b l y

s e c u r e d t o body

1 6 W i t h

f o u r t h r e a d e d b o l t s 9 5 . As shoWn n F I G S .

4

a n d 8 , body 1 6

i n c l u d e s a r e c e s s

125

f o r

r e c e i v i n g

t h e e n d s

o f

b o l t s 95 a nd

n e c k p l a t e

1 2 3 . T h u s ,

n e c k p l a t e 1 2 3

a n d

b o l t s 9 5 a r e

r e c e s s e d beloW t h e

s u r f a c e

o f body

1 6 .

As shoWn

i n F I G . 4 ,

s t r a p

b u t t o n

124 i s

mounted t o t h e o u t s i d e

s u r f a c e

o f neck

p l a t e 1 2 3 .

As shoWn

i n

FIGS.

8 — 1 1 , t r u s s

21 a l s o

i n c l u d e s a c y l i n

d r i c a l s l e e v e 9 6 c o n c e n t r i c t o t r u s s r o d 22

and i n s l i d i n g

engagement W i t h t r u s s r o d

2 2 .

S l e e v e 9 6 e x t e n d s a r o u n d

t h a t

p o r t i o n

o f t r u s s r o d 2 2 i m m e d i a t e l y

t o t h e

l e f t o f

s u r f a c e

1 1 7

o f

t o p - n u t

1 9 . T o

a d d

a d d i t i o n a l c o u n t e r b a l a n c i n g s t r e n g t h

t o

n e c k 1 8 ,

a

l o n g a n d n a r r o W

p l a t e

9 8 i s p o s i t i o n e d o n

t o p o f f

s l e e v e

9 6

a n d g e n e r a l l y p a r a l l e l t o t r u s s

r o d

2 2 . P l a t e

9 8

e x t e n d s from s u r f a c e 1 1 7 o f t o p - n u t

1 9 t o

a l o n g i t u d i n a l

p o i n t on t r u s s

r o d 22

betWeen b o l t s 95a a n d 9 5 b . P l a t e 9 8 i s

Welded t

one

end

o

s l e e v e 96 and s Welded t i t s o t h e r e n d ,

a s

shoWn

i n

FIG. 8 , t o t r u s s r o d 22 a t Weld 9 9 .

F I G . 1 4 shoWs s l i d e s t y l e

m a s t e r

volume c o n t r o l

6 2

e m p l o y e d i n t h e p r e f e r r e d e m b o d i m e n t . As i n d i c a t e d i n F I G .

2 , c o n t r o l 6 2

i s

mounted o n

t h e

t o p r i g h t s h o u l d e r o f body

1 6

s u c h

t h a t a p l a y e r

c a n e a s i l y

d e t e r m i n e

v i s u a l l y hoW

h i g h

t h e

i n s t r u m e n t

i s

t u r n e d

u p .

Because

o f

t h e

m e c h a n i c a l

engagement

o f

t r u s s

r o d

22

W i t h t o p - n u t

1 9 a n d b r i d g e 2 0 , t h e

t r u s s p r o v i d e s i m p r o v e d

management o f

k i n e t i c

e n e r g y W i t h i n

t h e i n s t r u m e n t .

T h i s

i m p r o v e d management o f k i n e t i c e n e r g y r e s u l t s i n

a g r e a t e r

s u s t a i n

o f n o t e s When p l a y e d .

T h e p r e s e n t i n v e n t i o n c o n t e m p l a t e s t h a t many c h a n g e s

a n d m o d i ? c a t i o n s m a y b e m a d e . The p a r t i c u l a r m a t e r i a l s

o f

Which

t h e

v a r i o u s body

p a r t s a n d

component

p a r t s

a r e

formed a r e n o t deemed c r i t i c a l and m a y be r e a d i l y v a r i e d .

T h e r e f o r e ,

W h i l e

t h e p r e s e n t l y p r e f e r r e d f o r m o f

t h e

i n s t r u

ment

h a s

been

shoWn a n d

d e s c r i b e d ,

a n d

s e v e r a l modi?ca

t i o n s d i s c u s s e d , p e r s o n s s k i l l e d i n t h i s a r t

W i l l r e a d i l y

a p p r e c i a t e t h a t

v a r i o u s

a d d i t i o n a l c h a n g e s a n d m o d i ?c a t i o n

m a y

b e made

W i t h o u t

d e p a r t i n g f r o m t h e s p i r i t o f t h e

i n v e n t i o n ,

a s

d e ? n e d

a n d

d i f f e r e n t i a t e d by

t h e

f o l l o W i n g

c l a i m s .

What i s

c l a i m e d

i s :

1 .

A t r i n g e d

i n s t r u m e n t

c o m p r i s i n g :

a

b o d y ;

a n e l o n g a t e d n e c k c o n n e c t e d t o s a i d b o d y ;

a

t o p - n u t

s u p p o r t e d

b y

s a i d

n e c k ;

a b r i d g e

s u p p o r t e d

b y s a i d

b o d y ;

a p l ur a l i t y o f s t r i n g s

mounted n

t e n s i o n r e l a t i o n s h i p o v e r

a t

l e a s t

a

p o r t i o n

o f s a i d

n e c k

a n d s a i d body a n d

s u p p o r t e d a t

l e a s t i n p a r t b y s a i d t o p - n u t

a n d

s a i d

b r i d g e ;

a

t r u s s

complying a

t r u s s

r o d e x t e n d i n g l o n g i t u d i n a l l y

betWeen s a i d

t o p - n u t

a n d s a i d b r i d g e a n d a t r u s s

f o r c e - t r a n s f e r

member

mounted t o s a i d t r u s s

r o d ;

s a i d b r i d g e c o m p r i s i n g

a b a s e s e c u r e d t o

s a i d

b o d y , a

s a d d l e

f o r r e c e i v i n g

s a i d s t r i n g s ,

a n arm

c o n ? g u r e d a n d

a r r a n g e d t o p i v o t s a i d s a d d l e i n a

? r s t

d i r e c t i o n f o r

d e c r e a s i n g t h e

t e n s i o n i n s a i d s t r i n g , a n d a

s a d d l e

f o r c e - t r a n s f e r m e m b e r ; a n d

Page 14: US Patent 6,884,932, entitled "Stringed instrument truss assembly" to  Wrona and Miller, issued Apr. 26, 2005

8/16/2019 US Patent 6,884,932, entitled "Stringed instrument truss assembly" to Wrona and Miller, issued Apr. 26, 2005.

http://slidepdf.com/reader/full/us-patent-6884932-entitled-stringed-instrument-truss-assembly-to-wrona 14/14

US 6 , 8 8 4 , 9 3 2 B2

a

s p r i n g

a c t i n g between s a i d t r u s s

f o r c e - t r a n s f e r

member

a n d s a i d s a d d l e

f o r c e - t r a n s f e r

member;

Whereby

s a i d

t r u s s

i s

i n

m e c h a n i c a l

engagement W i t h

s a i d

b r i d g e a n d s a i d t o p - n u t .

2 .

The

s t r i n g e d

i n s t r u m e n t

s e t f o r t h

i n

c l a i m

1 ,

W h e r e i n

s a i d

s p r i n g i s i n c o m p r e s s i o n

b e t W e e n s a i d

t r u s s

f o r c e

t r a n s f e r member a n d

s a i d s a d d l e f o r c e - t r a n s f e r

member.

3 .

The

s t r i n g e d i n s t r u m e n t

s e t

f o r t h

i n

c l a i m

1 ,

W h e r e i n

p i v o t a l movement o f s a i d s a d d l e i n s a i d ? r s t d i r e c t i o n c a u s e s

a c o m p r e s s i o n f o r c e on

s a i d

s p r i n g .

4 .

The

s t r i n g e d

i n s t r u m e n t s e t f o r t h i n c l a i m

1 , W h e r e i n

s a i d t r u s s f o r c e - t r a n s f e r

member

i s a d j u s t a b l y mounted f o r

l o n g i t u d i n a l

movement a l o n g a t l e a s t a p o r t i o n o f s a i d t r u s s

r o d a n d t h e f o r c e o f s a i d

s p r i n g

i s a

f u n c t i o n

o f t h e

l o n g i t u d i n a l p o s i t i o n

o f

s a i d t r u s s f o r c e - t r a n s f e r

member

on

s a i d

t r u s s

r o d .

5 .

The

s t r i n g e d

i n s t r u m e n t

s e t f o r t h i n c l a i m 1 , W h e r e i n

s a i d

s p r i n g

i s

a

c o i l e d

s p r i n g a n d

s a i d

t r u s s

r o d e X t e n d s a l o n g

t h e

c e n t e r l i n e o f s a i d

c o i l .

6 .

A

t r i n g e d

i n s t r u m e n t

c o m p r i s i n g :

a b o d y ;

a n e l o n g a t e d

n e c k c o n n e c t e d t o

s a i d

b o d y ;

a

t o p - n u t

s u p p o r t e d

b y

s a i d

n e c k ;

a

b r i d g e

s u p p o r t e d b y

s a i d

b o d y ;

a p l ur a l i t y

o f s t r i n g s mounted n t e n s i o n r e l a t i o n s h i p o v e r

a t l e a s t

a

p o r t i o n o f s a i d n e c k a n d s a i d body

a n d

s u p p o r t e d a t

l e a s t i n

p a r t b y

s a i d

t o p - n u t a n d

s a i d

b r i d g e ;

a t r u s s r o d e x t e n d i n g

l o n g i t u d i n a l l y

betWeen

a n d

i n

m e c h a n i c a l e n g a g e m e n t W i t h s a i d t o p - n u t a n d s a i d

b r i d g e ;

s a i d

t o p - n u t

c o m p r i s i n g a

h e a d

s i d e , a n

o p p os i n g n e c k

s i d e a n d a t h r o u g h - p a s s a g e b e t W e e n s a i d

s i d e s ;

s a i d t r u s s r o d e x t e n d i n g t h r o u g h s a i d t h r o u g h - p a s s a g e

a n d

h a v i n g a

p o r t i o n

p r o j e c t i n g o n s a i d h e a d s i d e ;

s a i d p r o je c t i n g p o r t i o n o f s a i d t r u s s

r o d

o n s a i d

h e a d

s i d e

t h r e a d e d t o r e c e i v e

a c o r r e s p o n d i n g l y t h r e a d e d

a d j u s t

ment

n u t ;

s a i d a d j u s t m e n t

n u t i n t h r e a d e d

e n g a g e m e n t

W i t h

s a i d

t r u s s r o d ;

W h e r e b y

t h e

t e n s i o n

o f

s a i d t r u s s

r o d i s

a d j u s t e d b y

s e l e c t i v e r o t a t i o n o f s a i d

a d j u s t m e n t

n u t .

7 .

The

s t r i n g e d

i n s t r u m e n t s e t f o r t h i n c l a i m 6 , W h e r e i n

s a i d a d j u s t m e n t n u t h a s a t h r e a d e d ? r s t

p o r t i o n

a n d s e c o n d

p o r t i o n c o m p r i s i n g

a r e c e s s f o r

r e c e i v i n g

a

t o r q u e - p r o d u c i n g

t o o l .

8 .

The

s t r i n g e d

i n s t r u m e n t s e t

f o r t h

i n

c l a i m 6 , W h e r e i n

s a i d t o p - n u t

c o m p r i s e s

a

l o W e r p o rt i o n s e c u r e d t o s a i d n e c k

a n d a n

u p p e r p o r t i o n

a d j u s t a b l e

r e l a t i v e t o s a i d l o W e r

p o r t i o n .

10

1 5

35

40

45

1 0

9 .

The

s t r i n g e d

i n s t r u m e n t s e t

f o r t h i n c l a i m 8 , a n d f u r t h e r

c o m p r i s i n g :

a t l e a s t one up per p i n ;

s a i d

u p p e r p i n

a n d s a i d

u p p e r p o r t i o n i n

t h r e a d e d

e n g a g e

ment such t h a t s a i d upper

p o r t i o n moves

r e l a t i v e t o

s a i d

l o W e r

p o r t i o n W i t h

s e l e c t i v e

r o t a t i o n

o f

s a i d u p p e r

p i n .

1 0 .

A

t r i n g e d

i n s t r u m e n t c o m p r i s i n g :

a b o d y ;

a n

e l o n g a t e d

n e c k c o n n e c t e d t o s a i d

b o d y ;

a

t o p - n u t s u p p o r t e d b y

s a i d

n e c k ;

a

b r i d g e

s u p p o r t e d

b y

s a i d b o d y ;

a p l ur a l i t y

o f

s t r i n g s

mounted n t e n s i o n r e l a t i o n s h i p o v e r

a t l e a s t a p o r t i o n o f s a i d n e c k a n d s a i d body a n d

s u p p o r t e d

a t

l e a s t

i n p a r t

b y

s a i d b r i d g e ;

a t r u s s

i n

m e c h a n i c a l engagement

W i t h

s a i d b r i d g e a n d

s a i d t o p - n u t ;

a

p i c k - u p s u p p o rt e d b y s a i d b o d y

a n d

p o s i t i o n e d

b e t W e e n

s a i d b o d y

a n d s a i d

s t r i n g s ;

s a i d

p i c k - u p

h a v i n g

a

t o p

s u r f a c e ;

a n d

a p i c k - u p t i l t a d j u s t m e n t mechanism f o r a d j u s t i n g t h e

a n g l e

o f s a i d t o p

s u r f a c e

r e l a t i v e

t o

t h e p l a n e o f s a i d

s t r i n g s .

1 1 . The

s t r i n g e d

i n s t r u m e n t s e t f o r t h i n c l a i m 1 0 ,

W h e r e i n

s a i d p i c k - u p c o m p r i s e s a

s u p p o r t

p l a t e c o n ? g u r e d

t o

p i v o t

a b o u t a p i v o t l i n e

a n d s a i d

t i l t

a d j u s t m e n t

mechanism

c o m p r i s e s a t

l e a s t o n e s p r i n g

b e t W e e n s a i d

body a n d

s a i d

s u p p o r t

p l a t e on

a

? r s t s i d e

o f s a i d

l i n e

a n d a

s e l e c t i v e l y

a d j u s t a b l e

member

e t W e e n s a i d

b o d y

a n d

s a i d s u p p o r t

p l a t e

on t h e

o p p o s i t e s i d e

o f

s a i d

l i n e from s a i d ? r s t s i d e .

1 2 . The

s t r i n g e d

i n s t r u m e n t s e t

f o r t h

i n

c l a i m

1 1 ,

W h e r e i n

s a i d a d j u s t a b l e member a n d s a i d

body

a r e

i n t h r e a d e d

engagement

s u c h t h a t

t h e f o r c e o f s a i d s p r i n g on s a i d

s u p p o r t

p l a t e

i s

a

f u n c t i o n o f

t h e r o t a t i o n

o f

s a i d

a d j u s t a b l e

member.

1 3 . The

s t r i n g e d

i n s t r u m e n t s e t f o r t h i n c l a i m

1 1 ,

W h e r e i n

s a i d a d j u s t a b l e

member a n d

s a i d

body a r e i n

t h r e a d e d

e n g a g e m e n t

s u c h

t h a t

t h e a n g l e

o f

s a i d

t o p s u r f a c e r e l a t i v e

t o s a i d p l a n e o f s a i d s t r i n g s i s a f u n c t i o n o f t h e r o t a t i o n o f

s a i d a d j u s t a b l e

m e m b e r .

1 4 .

The

s t r i n g e d

i n s t r u m e n t s e t

f o r t h

i n

c l a i m 1 0 , a n d

f u r t h e r c o m p r i s i n g

a

h e i g h t a d j u s t m e n t

mechanism f o r

a d j u s t i n g

t h e

d i s t a n c e

b e t W e e n s a i d

t o p s u r f a c e a n d

s a i d

p l a n e o f s a i d s t r i n g s .