US PATENT SUBCLASS 474 / 51
.~.~ By fluid pressure actuator or inflatable rim

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}
51.~.~ By fluid pressure actuator or inflatable rim

DEFINITION

Classification: 474/51

By fluid pressure actuator or inflatable rim:

(under subclass 49) Subject matter wherein the motion-inducing mechanism is actuated by energy derived from or transmitted via the exertion of force upon a fluid; or wherein the belt*-engaging surface is expandible by introduction of a fluid therein to increase the effective diameter of the pulley*. [figure]

SEE OR SEARCH THIS CLASS, SUBCLASS:

18, 28, 103+, and 110, for other arrangements using an electrical or fluid motor as a drive for an actuator in a belt and pulley drive system.