US PATENT SUBCLASS 474 / 82
.~.~.~ Shifter mechanism including parallelogram linkage

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

69  DF  CONTROL FOR VARIABLE INPUT TO OUTPUT SPEED-RATIO {7}
78  DF  .~ Including belt shiftable axially from one to another surface of stepped pulley or coaxial pulleys of different diameter {2}
80  DF  .~.~ And including belt-shifter mechanism {2}
82.~.~.~ Shifter mechanism including parallelogram linkage

DEFINITION

Classification: 474/82

Shifter mechanism including parallelogram linkage:

(under subclass 80) Subject matter wherein the belt-moving device includes four arms pivotally interconnected to form a four-sided figure, and wherein opposite sides of the device remain parallel to each other when the device is actuated to move the belt*. [figure]