Variable speed drive and combined clutch/brake system

Details Variable speed drive and combined clutch/brake system Variable speed drive and combined clutch/brake system

1980-05-21

1982-01-12

Krizmanich, George H.

192 clutches and power-stop control

Clutch and brake

Sliding operation

74477, B60K 4120

Patent

active

043100821

ABSTRACT:
A belt drive arrangement is provided which employs a variator to interconnect a drive belt operated by a power source and a driven belt which operates a wheel drive of a ground-engaging vehicle. The variator is mounted on a pivotally movable arm whereby the position of the variator is selectively altered to vary the speed of the driven belt and thus the ground speed of the vehicle. A single pedal is linked via cam means to the variator-supporting arm. Depression of the pedal pivots the arm to reduce drive belt tension until the driven belt no longer is moved and additional linkage is actuated to brake the wheels of the vehicle. An idler assembly is operatively related to the driven belt and is responsive to the force exerted by the driven belt to actuate the brakes when the vehicle's power source is turned off with the variator at a high speed setting. A hand-operated parking brake also is provided to brake the vehicle independently of the variator operation and depression of the pedal.

REFERENCES:
patent: 2718154 (1955-09-01), Mathson
patent: 3145584 (1964-08-01), Fairbank et al.
patent: 3583535 (1971-06-01), Plamper

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