Drive pulley

Details Drive pulley Drive pulley

F - Mech Eng,Light,Heat,Weapons

16

H

74/224

F16H 9/12 (2006.01) F16H 55/56 (2006.01)

Patent

CA 1208040

Abstract of The Disclosure A variable ratio drive pulley, of the type employed in snowmobiles to transmit a drive from the snowmobile engine via a belt transmission to the snowmobile track, has a fixed flange and an opposed movable flange which co- operate to drive the belt. The movable flange is spring loaded away from the fixed flange and centrifugal means are included to overcome the spring force and urge the movable flange towards the fixed flange with a force that increases with the speed of rotation. The centrifugal means comprises a number of pivoted levers each having a roller cooperating with a ramp, and the pulley includes means whereby the position of the ramp can be rapidly adjusted without disassembly of the drive pulley, to vary the response of the drive pulley to different operating conditions.

459037

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