Rotation control mechanism for diaphram-operating ring in interc

Details Rotation control mechanism for diaphram-operating ring in interc Rotation control mechanism for diaphram-operating ring in interc

1983-08-05

1985-03-19

Gonzales, John

G03B 902

Patent

active

045055645

ABSTRACT:
An interchangeable objective with a variable lens aperture for a photographic camera has a stationary support member and a diaphragm-operating member that is rotatable about an axis between first and second angular positions relative to the stationary support member. A first spring-loaded locking pin is located in the stationary member in a first plane perpendicular to the axis. A second spring-loaded locking pin is located in the stationary member circumferentially spaced at an angle to the first pin about the axis and in a second plane perpendicular to the axis. The second plane is spaced from the first plane in the direction of the axis. As a result, the distance between locking pins is greater than the angular distance of rotation of the diaphragm-operating member between the end of the M-range and the A-position. A locking groove is formed in the diaphragm-operating member so as alternatively to receive the first and second spring-loaded pins in locking engagement when the diaphragm-operating member is positioned at the first and second angular positions, respectively. An unlocking button is mounted in the diaphragm-operating member over the locking groove to push the respective first and second pins out of engagement with the locking groove upon depression of the unlocking button.

REFERENCES:
patent: 2878738 (1959-03-01), Uhland
patent: 3135185 (1964-06-01), Grosjean

Affiliated with

Also associated with

Rating

Rotation control mechanism for diaphram-operating ring in interc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rotation control mechanism for diaphram-operating ring in interc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotation control mechanism for diaphram-operating ring in interc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-750167