Environmentlnternational, Vol. 12, pp. I-IX, 1986 0160-4120/86 $3.00 + .00 Printed in the USA. All fights reserved. Copyright © 1986 Pergamon Journals Ltd.

NEW PATENTS

This Section contains abstracts and, where appropriate, illustrations of recently issued United States patents and published patent applications filed from over 30 countries under the Patent Cooperation Treaty. This information was obtained from recent additions to the Pergamon PATSEARCH ® online database in accordance with interest profiles developed by the Editors. Further information about Pergamon PATSEARCH ® can be obtained from Pergamon InfoLine Inc., 1340 Old Chain Bridge Road, McLean, Virginia 22101 U.S.A.

Copies of complete patents announced in this Section are available from Pergamon InfoLine Inc. for $8 per copy. Payment with order is required. Orders outside North America add $2 for air postage. Order by patent number for Pergamon InfoLine only.

4491142

AUTOMATIC STOPPING DEVICE OF COMBUSTION FUEL SUPPLY

Kunio Shimizu, Tokyo, Japan assigned to Touto Denki Kabushiki Kaisha

An automatic fuel supply stopping device in- corporated in fuel combustion equipment in- cluding a shut-off valve and a combustor. The automatic fuel supply stopping device comprises a fluid intercepting mechanism interposed in a channel through which the fuel supply to the combustor is supplied. A photosensor is adapted to detect fuel combustion in the combustor by radiation emitted from a thermosensitive luminous medium. The fluid intercepting mechanism alternately takes its first stable state or passage blocking state and is changed over, in response to an output from a sensor circuit, from the passage opening state to the passage blocking state.

4491232

SECURED SAMPLING FACILITY

Steven D Hansen

Structure and method for prevention of unauthorized access to effluent monitoring sta- tions or the like.

4491955

FLUID FLOW AND ASH CONCENTRATION METER

SYSTEM USING MOSSBAUER EFFECT

Paul Kydd assigned to HRI Inc

A meter system and method for measuring the velocity and metal concentration of a fluid con- taining a gamma ray absorbing metal isotope flowing in a pipe. The meter system comprises a radioactive source of gamma rays which is oscil- lated in a direction angled to the fluid flow, an accelerometer device incorporated with the gamma ray source, gamma ray detector means located adjacent a pipe portion for detecting the presence of a metal isotope in the flowing fluid, and an electrical circuit and meter means ar- ranged for measuring and displaying the velocity of the oscillating source of gamma rays when the metal isotope in the flowing fluid is absorbing gamma radiation. If desired, the concentration of gamma ray absorbing isotopes such as iron compounds contained in the flowing fluid can be monitored by a counter means to measure the metal concentration of the fluid, or ash con- centration of a flowing coal-derived liquid.

4493186

STEAM POWER PLANT AND STEAM GENERATOR,

ESPECIALLY SUITED FOR A STEAM POWER PLANT OF THIS

TYPE

Werner Emsperger, Reiner Engelhardt, Er- langen, Federal Republic Of Germany assigned to Kraftwerk Union Aktiengesellschaft

Steam power plant, including a steam turbine having a high pressure section with an exhaust steam outlet, a steam generator having a live steam side connected upstream of the high pre- ssure section of the steam turbine, the steam generator having a combustion chamber and a convection space formed therein, an inter- mediate superheater heating surface having an outlet and having an inlet being connected to the

II New Patents

exhaust steam outlet of the high pressure section of the steam turbine, a device for applying com- bustion air to the combustion chamber of the steam generator, and a device disposed at the outlet of the intermediate superheater heating surface for regulating steam temperature thereat, the regulating device including a nozzle terminating in the convection space of the steam generator between the combustion chamber and the intermediate superheater heating surface.

engine parameters and manufacturing variations compensated by factors stored in ROM during final engine testing.

4493391

SAFETY LOWERING DEVICE

Preston J Van Patten

4493~3

ENGINE CONTROL

Lionel D Thompson, Harold E Jenkins, Richard A Hickerson, Russell E Weaver assigned to Mack Trucks Inc

Fuel flow and/or engine speed is electrically con- trolled in accordance with a rate-of-change (ac- celeration or deceleration) value computed from one or more sensed parameters such as ac- celerator pedal position, throttle position, engine speed, exhaust temperature, intake man- ifold pressure, fuel temperature, etc. as well as stored engine parameters. A difference between a desired rate-of-change and a measured actual rate-of-change in engine speed is used to cor- respondingly change an engine control, for ex- ample a fuel control rack in a diesel engine fuel pump, a throttle valve in a carburetor, a timer for a fuel injection valve, a fuel valve to a turbine, or other control. The desired rate of change in engine speed may be critically damped, for ex- ample by multiplying by a percent or other frac- tion of a difference between a desired fuel flow and a present fuel flow, so as to avoid overshoot. The control may be operated in min-max, all- speed, cruise control or other special speed con- trol modes, as well as incorporating altitude adjustment, pollution emission control, timing advance control, excessive speed control, fuel control recalibration, counting of selective num- bers of pulses from a timing wheel with extension of time for slow speeds, manually selectable low idle adjustment, recordation of operation at ex- cessive engine speed, operating time or other event, fuel consumption economy maximizing, and/or anti-tampering features. In one par- ticular application, the electronic control replaces a governor on a diesel engine and pro- vides maximum power and torque control which may be changed by sensed changed operating conditions such as different transmission gear ranges. A standard computerized control can be employed for different engines with different

A self-contained safety device for self-lowering a person comprises an elongated high-strength safety webbing to support a person and a reel for releasably housing said webbing. The device comprises a generally figure 8 shaped member having two aligned apertures, a seat comprising a non-slip buckle means and two elongated seat webbings to form a big hole and one-half of waste hole. A friction knot is formed by passing the safety webbing through one aperture of the figure 8 member, said friction knot being man- ipulatable to extend the webbing at a controlled rate, and means at the free end of the safety web- bing for anchoring the webb during lowering of the person.

4493598

MASTER-SLAVE TYPE TELESCOPIC

TELEMANIPULATOR

Charles Glachet, Daniel Francois, Jean Ten- telier, ux Christian Frigra/o/, Vendome, France assigned to La Calhene; Commissariat a l'Ener- gie Atomiq

A telescopic telemanipulator of the master-slave type, wherein the slave arm is equilibrated by means of at least one counterweight mounted on a link articulated to the traversing block on the master arm side, the counterweight moving along the link when an offsetting is introduced between the length of the slave arm and that of the master arm; at least a second counterweight is mounted adjacent the first counterweight on another link, such counterweight moving along the link when a variation in the length of the slave arm is controlled from the master arm. The telemanipulator has application for the remote- controlled handling, among other things, of radioactive products.