Adapter ring for rotation of photographing lens barrel

Details Adapter ring for rotation of photographing lens barrel Adapter ring for rotation of photographing lens barrel

2006-07-24

2009-11-10

Blackman, Rochelle-Ann J (Department: 2862)

Photography

With exposure objective focusing means, focusing aid, or...

Mechanical mechanism for displacement of exposure objective

C396S025000, C396S530000, C359S676000, C359S701000, C359S825000

Reexamination Certificate

active

07616880

ABSTRACT:
There is disclosed an adapter ring for rotation of a photographing lens barrel, the adapter ring being fitted into an outer periphery of the photographing lens barrel, the adapter ring being rotated through engaging with a ratchet wheel having a plurality of pawls which ratchet wheel rotates in conjunction with a dial disposed in a waterproof protector. This adapter ring has: a plurality of first projecting portions arranged in a predetermined angle range around an optical axis in the outer periphery to engage with the pawls of the ratchet wheel; and a plurality of second projecting portions which are the same plurality of projecting portions as the plurality of first projecting portions, the second projecting portions being arranged in a predetermined angle range but out of the predetermined angle range of the plurality of the first projecting portions.

REFERENCES:
patent: 1559062 (1925-10-01), Anderson
patent: 3698254 (1972-10-01), Bradt
patent: 4553817 (1985-11-01), Ando et al.
patent: 5105312 (1992-04-01), Tiffen et al.
patent: 5177523 (1993-01-01), Huang et al.
patent: 6389238 (2002-05-01), Suzuki

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