Moisture- and dust-proof device for rotating operation part of c

Details Moisture- and dust-proof device for rotating operation part of c Moisture- and dust-proof device for rotating operation part of c

1981-11-13

1983-02-08

Hix, L. T.

354 64, G03B 1702, G03B 1708

Patent

active

043726640

ABSTRACT:
A moisture- and dust-proof device for a rotating operation member of a camera has a receiving seat for the rotating operation member, such as a film sensitivity value setting dial or a shutter speed setting dial, formed with a visco-elastic material such as rubber. The receiving seat is secured to a hole arranged to have the operation shaft of the rotating operation member inserted therein. Then, a washer made of Teflon or the like is inserted in between the receiving seat and the rotating operation member to impart a drip- and moisture-proof effect as well as to permit rotating operation of the rotating operation member.

REFERENCES:
patent: 3653306 (1972-04-01), Takahama
patent: 4041507 (1977-08-01), Ko et al.
patent: 4097878 (1978-06-01), Cramer
patent: 4244591 (1981-01-01), Umetsu
patent: 4281837 (1981-08-01), Hashimoto

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