1979-09-13
1981-03-10
Griffin, Donald A.
G03B 908
Patent
active
042550351
ABSTRACT:
A ring-shaped element for a camera mechanism formed from a metal sheet maial is provided. Selected areas of the ring element are provided with operating regions of a synthetic material for providing operative engagement surfaces. The inwardly facing surfaces of the synthetic material provide a sliding surface for rotation about the fixed camera part. Rotation of the ring elements actuates a camera mechanism such as the shutter. A camera shutter includes a series of the ring elements mounted for rotation about a fixed camera part having a central axis which traverses the center of the ring elements. Several ring elements may be arranged successively with the synthetic material regions on adjacent rings at different radial positions so that the rings may be disposed in close proximity for providing a compact construction.
REFERENCES:
patent: 2900885 (1959-08-01), Gebele
patent: 3069989 (1962-12-01), Kiper
patent: 3108528 (1963-10-01), Rentschler
patent: 3733991 (1973-05-01), Kobayashi et al.
Balda-Werke Photgraphische Gerate und Kunstosoff GmbH & Co., KG
Griffin Donald A.
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