Power transmission apparatus

Details Power transmission apparatus Power transmission apparatus

1996-12-02

1999-03-02

Gray, David M.

Photography

Having variable focal length of camera objective

Having focus operation

396 48, G03B 118, G03B 112

Patent

active

058782885

ABSTRACT:
The invention is directed to an engaging mechnism. The engaging mechanism comprises a cam element which moves upon modification of an engaging position, a cam follower abutted against a cam surface of the cam element, a detecting element for detecting a position of the cam follower, and a section to be detected provided on the cam follower, for giving at least three different kinds of output values to the detecting element.

REFERENCES:
patent: 5105212 (1992-04-01), Kitazawa
patent: 5329328 (1994-07-01), Haraguchi et al.
patent: 5365301 (1994-11-01), Sugita et al.

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