Sliding friction member for lens sliding ring

Details Sliding friction member for lens sliding ring Sliding friction member for lens sliding ring

1984-02-09

1987-02-03

Corbin, John K.

350429, G02B 1500, G02B 704

Patent

active

046405798

ABSTRACT:
A photographing lens device having an improved sliding friction member which restrains sliding movement of a sliding ring such as a lens hood ring or a zooming ring with respect to the mating sleeve in which it is slidably received. The sliding friction member is formed of a corrugated elastic member which is bent into an annular shape and fitted into a receiving groove formed in the sliding ring. The inner surface of the elastic member may be flocked to prevent scratching.

REFERENCES:
patent: 1848402 (1932-03-01), Wollensak
patent: 2908209 (1959-10-01), Marvin et al.
patent: 3876290 (1975-04-01), Back
patent: 4496217 (1985-01-01), Aoyagi

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