formulated coating composition that does not require an organic solvent for applica- tion to a substrate and is liquid at not more than about 50°C comprising at least one linear oligoester diol and a crosslinker se- lected from the group consisting of at least one polyisocyanate and a blend of at least one polyisocyanate and at least one amino resin.

Radiant and Convection Heating Oven U.S. fatenf $588.830. Dec. 31, 1996 L.EB. Josefsson and RI Monte, assignors to A&3 faint Finishing Inc., Auburn Hills, Mich.

A combined radiant and convection heating oven for heating an object compris- ing a heating chamber extending along a longitudinal axis of the oven; at least one motor-driven fan for delivering a convec- tion gas to the chamber; at least one radiant heat emitting surface extending substan- tially parallel to the longitudinal axis and positioned within the heating chamber; a sensor positioned to monitor the tempera- ture of the convection gas; and means cou- pled to the temperature sensor for varying a rate at which heat is transferred from the convection gas and the radiant heat emit- ting surface to the object while maintaining

ambient temperature in the chamber sub- sive entrained in a high velocity fluid stantially at a predetermined set point. stream.

Blasting Device U.S. Patenf 5,5X8,900. Dec. 31, 1996 F: Urakami, assignor to Urakami Research & Development, Kanagawa and Honda Giken Kogyo KK, Tokyo

A surface treating device having a noz- zle for ejecting a surface treating material toward the surface of an object, which comprises a swivel bearing mechanism, an oscillating tube connected to the swivel bearing mechanism so as to be free to pivot about an axis center of the swivel bearing mechanism and such that with respect to the axis center, an end portion thereof is positioned on the side facing the object surface and the other end portion thereof is positioned on the side opposite to the ob- ject surface.

Cleaning Apparatus Utilizing Sodium Bicarbonate U.S. Patent 5,588,901. Dec. 31, 1996 A.C. Rubey, 111 et al, assignors to Yelapa Corp., San Antonio, Texas

An apparatus for cleaning a surface by blasting the surface with particles of abra-

The Phosphating of Metals by W. Rausch

406 pages $140.00

The treatise covers theoretical principles of phosphating and its practical applica- tions. It also includes such peripheral aspects as effluent treatment technology, standards and specifications, plant con- struction, methods for cold working of treated surfaces, and modern painting processes.

Send Orders to: METAL FINISHING 660 White Plains Rd.

Tarrytown, NY 10581-5153 For faster service, call (914) 333-2578 or FAX your order to (914) 333-2570

All book orders must be prepaid. Please include $5.00 shipping and han- dling for delivery of each book via UPS in the U.S., 510.00 for each txx,k shipped express to Canada; and $20.00 for each book shipped express to all other countries.

Zinc Phosphate Coating U.S. Patent 5588,989. Dec. 31, 1996 DR. Vonk and J.A. Greene. assignors to PPG lndusfries Inc., Pittsburgh

An aqueous acidic composition for forming a zinc phosphate coating on a metal substrate comprising 0.4 to 3.0 g/L of zinc ion, 5 to 20 g/L phosphate ion, and as an accelerator. 0.5 to 20 g/L of an oxime.

Apparatus for Spray Coating Flat Surfaces U.S. Patent 5,588,996. Dec. 31, 1996 B.J. Costello, assignor to Argus International, Ringoes, IV. J.

An apparatus for coating workpieces comprising means for conveying work- pieces in a given direction: means for ad- justing the speed of the conveyor; an as- sembly for producing a liquid spray in a given pattern; means for delivering a coat- ing liquid to the spray assembly; means for reciprocably mounting the spray assembly above the conveyor; and means for adjust- ing outer limits of reciprocating movement of the spray assembly along the transverse

PLATING Servicing the Microelectronics,

Wireless/Microwave, Laser, Medical Industries; Defense/Commercial; Jobshop

Nickel: * Electrolytic Sulfamate * Electroless Phosphorous 8%

Gold:

QQ-N-290 Mil-C-26074

* Type II Grade C & D MM-45204 * Type III Grade A M&C-45204

Silver: * Electrolytic QQ-S-365C

Selective Plating; Rack and Barrel Plating; Custom

Plating, 950 Degree C Sintering, Turbowash, Brazing

8680 Miralani Dr. Suite 124 San Diego, CA 92126

(619) 271-8784 FAX (619) 271-7041 E-mail: georeek@polese.com

Internet: http://www.polese.com

Contact us today!

TYPE III, Inc. A Polese Company

Circle 066 on reader information card

METAL FINISHING ?? OCTOBER 1997 75

path according to size and/or arrangement of workpieces on the conveyor.

Mask for Plating Metals U.S. Patent 5,589,043. Dec. 31, 1996 J.l? Edwards, Anchorage, Alaska

A mask for selectively plating specific areas of a piece of metal including a rub- berized mold and a hard plastic mold cover cut in a specific pattern for applying plating metal to specific areas of the piece of metal.

Electrocoating Process U.S. Patent 5,589,049. Dec. 31, 1996 G. Ott et a/., assignors to BASF Lacke t Farben AG, Muenster-Hiltrup, Germany

A method of coating electrically conduc- tive substrates comprising immersing in an aqueous electrodip paint, which contains at least one cathodically depositable synthetic resin together with crosslinked polymer microparticles; connecting the substrate as cathode; depositing a film by direct current on the substrate; and baking the deposited paint film.

Clamp for Use with Electroplating Apparatus U.S. Patent5,589,051. Dec. 31, 1996 F! Henington, assignor to Process Automation lnfemafional Limited, New Territories, Hong Kong

A method for electrolytic deposition of a coating of metal on an electroplatable sub- strate comprising clamping the substrate at

its lower edge as it enters the electrolyte bath.

Process for Coating Vehicle Bodies U.S. Patent 5,589,228. Dec. 37, 1996 E. Wegner et a/., assignors to BASF Lacke t Farben AG, Muenster-Hiltrup, Germany

A process for coating vehicle bodies, com- prising the steps of applying to a substrate an electrodipping primer and optionally baking the primer, applying an intermediate primer, resistant to damage by stone chips, and bak- ing separately or together with the filler coat; applying a filler and baking the filler; and applying a single- or multilayer topcoat and baking, in which the intermediate primer and/or filler coat employed is an aqueous enamel containing as the binder a combina- tion of a water-dilutable polyurethane resin, a water-dilutable polyester resin, and an ami- noplast resin.

Adhesive for Electroless Plating U.S. Patent 5,589,255. Dec. 31, 1996 R. Enomofo and M. Asai, assignors to lbiden Co. Ltd., Gifu, Japan

An adhesive suitable for use in electro- less plating used in connection with printed circuit boards, comprising a heat-resistant resin, which is slightly soluble in the pres- ence of an oxidizing agent, and a plurality of heat-resistant particles, which are easily soluble in the oxidizing agent when dis- persed in the heat-resistant resin.

Circle 028 on reader information card

Air-Drying Polyurethane U.S. Patent 5,589,X%. Dec. 31, 1996 M. Schwab et a/., assignors to Hoechsf AG, Germany

A process for the preparation of an aqueous coating composition containing at least one wa- ter-dispersible polyurethane resin containing air-drying groups, the polyurethane having no residual NC0 content and a degree of branch- ing of up to 30% and optionally further binder resins and paint additives.

Blast Wheel U.S. Patent 5,590,467. Jan. 7, 1997 G. Schloetzer, assignor to The Wheelabrator Corp., LaGrange, Ga.

A method for making a blast wheel com- prising providing a pair of side plates; lo- cating a plurality of spacers between the side plates; locating a plurality of blades between the side plates; fixing the side plates to the spacers using bolts that will shear when a predetermined torque is ap- plied; and machining the side plates and bolts to create a smooth surface.

/ Permanent

\ \ safe Metal

Circle 009 on reader information card

76 METAL FINISHING ?? OCTOBER 1997