Rotary dial device having a click stop mechanism

Details Rotary dial device having a click stop mechanism Rotary dial device having a click stop mechanism

2005-03-01

2005-03-01

Gray, David M. (Department: 2851)

Photography

Camera detail

With mechanical switch detail

Reexamination Certificate

active

06862412

ABSTRACT:
A rotary dial device having a click stop mechanism, includes a stationary member; a rotary dial rotatably supported by the stationary member; a ball guide groove formed on the stationary member to extend in a radial direction of the rotary dial; a ball positioned in the ball guide groove; at least one protrusion and at least one depression which are formed on the rotary dial along one of two imaginary cylindrical surfaces with axes thereof on an axis of the rotary dial, the two imaginary cylindrical surfaces being positioned radially outside and inside the ball guide groove in the radial direction of the rotary dial, respectively; and a cylindrical resilient member positioned along the other of the two imaginary cylindrical surfaces to bring the ball into pressing contact with any one of the protrusion and the depression by resiliency of the cylindrical resilient member.

REFERENCES:
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patent: 3677096 (1972-07-01), Hatman
patent: 3736390 (1973-05-01), Lockard
patent: 4069723 (1978-01-01), Payerle
patent: 4346269 (1982-08-01), Slavin et al.
patent: 4379955 (1983-04-01), Comerford
patent: 5742853 (1998-04-01), Haga et al.
patent: 5749005 (1998-05-01), Haga et al.
patent: 5970267 (1999-10-01), Inazuka et al.
patent: 6615000 (2003-09-01), Itabashi
patent: 20020187001 (2002-12-01), Hattori et al.

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