US PATENT SUBCLASS 74 / 490.07
.~.~ Power elements as controlling elements

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

469  DF  CONTROL LEVER AND LINKAGE SYSTEMS {8}
479.01  DF  .~ Multiple controlling elements for single controlled element {8}
490.07.~.~ Power elements as controlling elements {3}
490.08  DF  .~.~.~> Planar surface with orthogonal movement and rotation
490.09  DF  .~.~.~> Planar surface with orthogonal movement only
490.1  DF  .~.~.~> Pair of power elements

DEFINITION

Classification: 74/490.07

Power elements as controlling elements:

(under subclass 479.01) Subject matter in which the controlling elements include power devices which include, but are not limited to electric motors, fluid motors, spring motors, heat engines (e.g., thermostatic actuator), electromagnetic devices (e.g., solenoids), etc. [figure]

SEE OR SEARCH CLASS

60, Power Plants, appropriate subclasses for related prime movers.

91, Motors: Expansible Chamber Type, appropriate subclasses for fluid motor detail.

92, Expansible Chamber Devices, appropriate subclasses for fluid actuators.

185, Motors: Spring, Weight, or Animal Powered, appropriate subclasses for spring escapements or spring motors.

310, Electrical Generator or Motor Structure, appropriate subclasses for various motor structures and 311+, for piezoelectric devices.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, appropriate subclasses for electromagnetic devices.