F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/234, 180/48,
F16H 15/00 (2006.01) F16H 15/10 (2006.01)
Patent
CA 1217357
LAWN MOWER FRICTION DRIVE MECHANISM ABSTRACT OF DISCLOSURE 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 slip- page 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 sud- den transmission of torque to the ground wheels. The coeffecient 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.
448404
Gowling Lafleur Henderson Llp
Snapper Inc.
LandOfFree
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