US PATENT SUBCLASS 60 / 39.24
.~.~ Automatic

Current as of: June, 1999
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60 /   HD   POWER PLANTS

39.01  DF  COMBUSTION PRODUCTS USED AS MOTIVE FLUID {31}
39.2  DF  .~ With regulation of power output {3}
39.24.~.~ Automatic {6}
39.25  DF  .~.~.~> Motive fluid to prime mover
39.26  DF  .~.~.~> Oxidizer, fuel and water or steam
39.27  DF  .~.~.~> Oxidizer and fuel
39.281  DF  .~.~.~> Fuel {1}
39.29  DF  .~.~.~> Oxidizer
39.3  DF  .~.~.~> Water or steam

DEFINITION

Classification: 60/39.24

(under subclass 39.2) Combinations including means to sense a change in condition of power plant operation, wherein the means to vary the rate of power output is under the control of such sensing means.

(1) Note. Control means responsive to (1) pressure and/or temperature of air or combustion products at any point between entrance into the compressor and discharge from the power plant; or (2) rate of flow or quantity of (a) air passing through the compressor to the combustion products generator or (b) products of combustion has been regarded as responsive to a change in condition of power plant operation.

The following has not been deemed significant power plant structure; control means responsive to (1) power plant speed; (2) carburetor or compressor inlet pressure; (3) air inlet temperature to carburetor or compressor; (4) pump speed; (5) fuel inlet or discharge pressure, velocity or volume; (6) altitude.

SEE OR SEARCH THIS CLASS, SUBCLASS:

39.09, for combinations of power plants with means to discontinue the supply of oxidizer, fuel, water, or motive fluid in response to some undesired or dangerous condition of operation.

233+, for a means controlling the thrust of a thrust producing device responsive to a motor condition such as speed, thrust, acceleration, etc. SEE OR SEARCH CLASS

137, Fluid Handling,

16+, for a residual prime mover control system.

236, Automatic Temperature and Humidity Regulation,

14, and 15, for automatic furnace control.

431, Combustion,

18+, for a residual automatically controlled device specialized to combustion and disclosed for use for purposes other than for external power.

701, Data Processing: Vehicles, Navigation, and Relative Location,

99, and 100 for indication or control of power plants, particularly gas turbine compressors.