Gear shifting apparatus

Details Gear shifting apparatus Gear shifting apparatus

1999-04-08

2000-11-28

Herrmann, Allan D.

Machine element or mechanism

Gearing

Interchangeably locked

74333, 743375, F16H 408, F16D 2104, F16D 4302

Patent

active

061519790

ABSTRACT:
The present invention includes a passive shifting apparatus for a marine winch having a plurality of gears thereon. The passive shifting apparatus permits the winch to be rotated in either a clockwise or counter-clockwise direction, and comprises a central shaft about which the gears rotate, supported on a base in a marine winch housing. A rotatable curvilinear cam is mounted on the shaft. A radially inwardly and outwardly movable cam follower is engaged against the curvilinear cam. A first spring is arranged between the housing and the cam follower to bias the cam follower against the curvilinear cam. A second spring is arranged between the housing and the cam follower to bias the cam follower on the inner end of the shift arm when the cam is counter rotated. The cam follower may then move into and out of a slot in the curvilinear cam, and the cam may be able to rotate either clockwise or counter-clockwise without locking-up the cam follower.

REFERENCES:
patent: 4301690 (1981-11-01), Cavanagh

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