US PATENT SUBCLASS 474 / 50
.~.~ By actuator responsive to speed or load

Current as of: June, 1999
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474 /   HD   ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS

47  DF  PULLEY WITH EXPANSIBLE RIM MEANS OR PULLEYS WITH ALTERNATELY USEABLE NESTABLE RIMS {2}
49  DF  .~ Structure for variably adjusting radius of rim section {5}
50.~.~ By actuator responsive to speed or load

DEFINITION

Classification: 474/50

By actuator responsive to speed or load:

(under subclass 49) Subject matter including means for sensing a condition of velocity, change of velocity, resistance to movement, or change of resistance to movement of a load device or of a member operating in a drive train to drive the load device; and, in response to such sensed condition or change of condition, said means acts to actuate said motion-inducing mechanism.

SEE OR SEARCH THIS CLASS, SUBCLASS:

11+, 17+, 70, and 109, for other arrangements using a load or speed responsive actuator in a belt and pulley drive system. [figure]