US PATENT SUBCLASS 290 / 40 R
.~ Engine control

Current as of: June, 1999
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290 /   HD   PRIME-MOVER DYNAMO PLANTS

7  DF  ELECTRIC CONTROL {10}
40 R.~ Engine control {7}
41  DF  .~.~> Ignition
40 A  DF  .~.~> Control in response to engine speed
40 B  DF  .~.~> Control in response to generator line conditions
40 C  DF  .~.~> Control in response to generator and prime mover conditions
40 D  DF  .~.~> Control in response to a time standard
40 E  DF  .~.~> Circuit resonant at given frequency
40 F  DF  .~.~> Control in response to D. C. generator output

Unofficial Alpha Subclasses: R A B C D E F

DEFINITION

Classification: 290/40

Electric-control prime-mover dynamo plants wherein the prime mover is provided with means for controlling the same. These are generally prime-mover-operated generators, the prime mover being automatically controlled in response to line-circuit conditions.

(1) Note. The combination of an internal combustion engine idle speed control and an electric generator in which is included (a) any detail of the generator, (b) any relationship between a generator part and an internal combustion engine, or (c) any control of the internal combustion engine in response to the electricity produced by the generator is found here.

SEE OR SEARCH CLASS

123, Internal-Combustion Engines,

339.16+, for an internal combustion engine idle speed control responsive to an external load condition.

361, Electricity: Electrical Systems and Devices,

236+, for miscellaneous electrical speed responsive systems.