US PATENT SUBCLASS 361 / 236
ELECTRICAL SPEED SIGNAL PROCESSING SYSTEMS

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

236ELECTRICAL SPEED SIGNAL PROCESSING SYSTEMS {7}
237  DF  .~> With centrifugal weight means
238  DF  .~> Antislip detection and circuitry
239  DF  .~> With speed analog electrical signal
240  DF  .~> Including frequency generators
241  DF  .~> Two position (e.g., on-off)
242  DF  .~> With speed comparison
243  DF  .~> Synchronization of shafts {1}

DEFINITION

Classification: 361/236

ELECTRICAL SPEED SIGNAL PROCESSING SYSTEMS:

(under the class definition) Subject matter wherein electrical circuitry is provided for detection of the speed or acceleration of a member, either angular or linear, and means included in the circuitry responsive to a change in speed or acceleration to generate a desired speed or acceleration control signal.

(1) Note. This subclass relates to, for example, miscellaneous speed sensing and speed responsive systems having no output which is specific to any particular art. This subclass relates only to speed controlled subcombinations; not speed controlled combinations.

(2) Note. Subject matter in which a combination of speed control circuitry and the device being controlled is claimed, proper classification is with the device and should not be placed in this or indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for protection of electrical systems against overspeed.

SEE OR SEARCH CLASS

73, Measuring and Testing, 488+, for speed or accelerating measuring.

178, Telegraphy, appropriate subclasses for telegraph and television systems having speed responsive means as a part thereof.

180, Motor Vehicles,

170+, as explained in the reference thereto appearing in Class 361, subclass 51.

290, Prime-Mover Dynamo Plants,

40, for prime-mover dynamo plants having means to control the speed of the engine.

318, Electricity: Motive Power Systems, appropriate subclasses for speed controlled electric motor systems. Note particularly

806, and 461+.

324, Electricity: Measuring and Testing,

160+, for electrical speed measuring processes and mechanisms.

340, Communications: Electrical,

441, for vehicle alarms or indicators which are responsive to the speed of the vehicle, and subclasses 670+ for speed responsive alarms, per se. 375, Pulse or Digital Communications,

354+, for synchronization.

416, Fluid Reaction Surfaces (i.e., Impellers),

44+, for an impeller having control means responsive to the rotation speed thereof.