Waterproof camera

Details Waterproof camera Waterproof camera

1992-07-29

1994-03-29

Gellner, Michael L.

354187, G03B 1708, G03B 1704

Patent

active

052989283

ABSTRACT:
Disclosed is a waterproof camera in which a watertightness of an interior of a camera body or a lens tube is maintained during a state where zooming is not performed by a zooming knob defined as a zooming manipulation member. When the lens tube is advanced and retracted by zooming, although the zooming knob is manipulated, a gap serving as an air hole is formed with this manipulation, and the interior of the camera body or the lens tube communicates with the outside air. This prevents such a state that a drive resistance of the lens tube increases. The camera does not require a special filter or the like as provided in the prior art waterproof camera, the filter being disposed in the gap serving as the air hole.

REFERENCES:
patent: 4244591 (1981-01-01), Umetsu
patent: 4763145 (1988-08-01), Takamura et al.
patent: 4908650 (1990-03-01), Taniguchi et al.
patent: 4931816 (1990-06-01), Kamo et al.
patent: 5070348 (1991-12-01), Kayakawa et al.
patent: 5153622 (1992-10-01), Hayakawa et al.

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