Device for locking the operation ring of photographing lens

Details Device for locking the operation ring of photographing lens Device for locking the operation ring of photographing lens

1986-12-01

1987-11-17

Griffin, Donald A.

35428911, G03B 902, G03B 1700

Patent

active

047071001

ABSTRACT:
In a photographing lens barrel having a manual operation ring and a stationary ring, a device for locking said manual operation ring is provided. The locking device includes a lock member projecting from one of said two rings, a lock part formed on the other ring to engage with said lock member, and a lock-operating member movable between a lock position and an unlock position. The lock operating member is biased toward said locking position by spring means and is held in said unlock position by limiting means.

REFERENCES:
patent: 2878738 (1959-03-01), Uhland
patent: 4110769 (1978-08-01), Schutz et al.
patent: 4341450 (1982-07-01), Shigoku
patent: 4408499 (1983-10-01), Haneishi
patent: 4518238 (1985-05-01), Hama

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