Focussing objective mechanism for telescopic rifle sights

Details Focussing objective mechanism for telescopic rifle sights Focussing objective mechanism for telescopic rifle sights

1975-07-10

1978-02-07

Rubin, David H.

350255, G02B 704

Patent

active

040723968

ABSTRACT:
A mechanism for focussing the objective lens assembly of a variable power telescopic rifle sight. A rotatable cam ring is used in conjunction with a coil spring which urges the lens assembly against the cam ring. A lens retainer portion of the lens assembly adjacent to the cam ring has formed thereon a camming ramp which is complimentary to a camming surface formed on the cam ring.

REFERENCES:
patent: 1494801 (1924-05-01), Pittman
patent: 2446703 (1948-08-01), Honigman
patent: 2893717 (1959-07-01), Simmons
patent: 3220308 (1965-11-01), Lareau
patent: 3336831 (1967-08-01), Unertl
patent: 3431052 (1969-03-01), Jacknau
patent: 3437404 (1969-04-01), Seedhouse
patent: 3516736 (1970-06-01), Weaver

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