Friction lock for optical adjustment

Details Friction lock for optical adjustment Friction lock for optical adjustment

1986-02-27

1989-09-19

Corbin, John K.

350542, 350552, G02B 702

Patent

active

048675334

ABSTRACT:
A lock ring prevents inadvertent rotation of a rotatable focusing eyepiece for an optical instrument. The ring is disposed on the device and is fixed against rotation. A face is provided on the ring which is adapted to frictionally engage the eyepiece to prevent inadvertent rotation thereof. The ring is movable or deformable to disengage the face from the eyepiece for focusing.

REFERENCES:
patent: 712113 (1902-10-01), Bausch et al.
patent: 905979 (1908-12-01), Bausch
patent: 1067532 (1913-07-01), Mackensen
patent: 1127720 (1915-02-01), Baille-Lemaire
patent: 2267711 (1940-02-01), Bailey
patent: 2386394 (1942-01-01), Grier
patent: 3744872 (1973-07-01), Akin, Jr. et al.
patent: 4297002 (1981-10-01), Meatabi
patent: 4325602 (1982-04-01), Lange
patent: 4428651 (1984-01-01), Calcutt
patent: 4478491 (1984-10-01), Kawai

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