Dual dial apparatus

Details Dual dial apparatus Dual dial apparatus

1997-09-17

1999-09-07

Adams, Russell

Photography

Camera detail

With mechanical switch detail

116305, 396299, G03B 1700

Patent

active

059500352

ABSTRACT:
First and second dials are coaxially and rotatably supported by a boss formed on an outer cover. An encoding plate having an encoding pattern formed on each of its upper and lower surfaces is fixed to the lower surface of the outer cover. A first contact which slides on one of the encoding patterns interlocking with the first dial is provided on the upper surface of a dial holding plate attached to a lower end of a shaft of the first dial. A second contact which slides on the other encoding pattern interlocking with the second dial is provided on the lower surface of a protrusion provided on the lower surface of the second dial.

REFERENCES:
patent: 3956763 (1976-05-01), Yamanaka
patent: 4089014 (1978-05-01), Ueda et al.
patent: 4200381 (1980-04-01), Ishizaka et al.
patent: 4853726 (1989-08-01), Kawamura et al.
patent: 5283606 (1994-02-01), Konno et al.

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