Underwater housing for photographic cameras

Details Underwater housing for photographic cameras Underwater housing for photographic cameras

1977-01-06

1978-06-27

Griffin, Donald A.

G03B 1708

Patent

active

040978788

ABSTRACT:
An underwater housing for photographic cameras, comprising a camera housing portion, a closure portion detachably connected with the camera housing portion, actuation elements for operating the camera penetrating through the wall of the camera housing portion. One of the actuation elements comprises a pusher arrangement for releasing the camera shutter which incorporates a pressure pin and a seal formed of elastomeric material inserted into an opening in the wall of the camera housing portion. The seal is provided with a head, a ring flange and a plug elastically expansible in lengthwise direction. The plug and the ring flange extend so as to protrude concentrically with respect to one another from the underside of the head. A peripheral groove is formed at the outer surface of the ring flange into which protrudes the wall portion of the camera housing portion surrounding the opening. A blindhole bore extends from the upper side of the head into the plug, and in the blindhole bore there is held the pressure pin.

REFERENCES:
patent: 3019715 (1962-02-01), Arnold et al.
patent: 3241467 (1966-03-01), Young
patent: 3412661 (1968-11-01), Soumar
patent: 3786734 (1974-01-01), Long et al.

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