Motor vehicles – Compensating devices
Patent
1983-03-31
1985-02-12
Bertsch, Richard A.
Motor vehicles
Compensating devices
74194, 192 52, F16H 1508, B62D 5104
Patent
active
044985525
ABSTRACT:
A friction drive mechanism is provided for machinery such as a lawn mower wherein a driven wheel is provided with an outer ring that slips upon initial engagement with a driving disc. The coefficient of friction between the inner surface of the ring and the driven wheel is selected such that when slippage occurs, it occurs at this interface and not between the outer surface of the ring and the driving disc. Upon initial start-up when the driven ring first engages the driving disc, the ring will slip relative to the driven wheel to avoid a sudden transmission of torque to the ground wheels. The coefficient of friction and the normal force between the inner surface of the ring and the driven wheel are selected such that gradually the relative velocity between the ring and driven wheel decreases to zero and the ring no longer slips on the driven wheel but rotates at the same speed as the driven wheel.
REFERENCES:
patent: 1953187 (1934-04-01), Nakashian
patent: 3327546 (1967-06-01), Gordon et al.
patent: 3445991 (1969-05-01), Hanson et al.
patent: 3613814 (1971-10-01), Prien
patent: 3631730 (1972-01-01), Hadler
patent: 3667304 (1972-06-01), Puffer et al.
patent: 3706363 (1972-12-01), Niles
patent: 3971463 (1976-07-01), Zindler
Bertsch Richard A.
Mouzavires William E.
Snapper Power Equipment Division of Fuqua Industries, Inc.
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