Apparatus of preventing bound of diaphragm blades in camera

Details Apparatus of preventing bound of diaphragm blades in camera Apparatus of preventing bound of diaphragm blades in camera

1982-06-04

1983-11-22

Gonzales, John

354274, G03B 906

Patent

active

044165277

ABSTRACT:
In a diaphragm actuator of a lens of a camera comprising a stationary support ring, a blade ring which is rotatable in the support ring and which has pivotable diaphragm blades movably connected to the support ring so that the rotational movement of the blade ring causes the diaphragm blades to open and close, and a limiting member which comes into contact with the blade ring to limit the movement of the blade ring when the diaphragm blades are closed, the improvement comprising an additional ring rotatable relative to the support ring for preventing the blade ring from bounding when the blade ring contacts with the limiting member, which additional ring comes into contact with the balde ring to brake the movement of the blade ring immediately before the blade ring contacts with the limiting member.

REFERENCES:
patent: 3298295 (1967-01-01), Schlapp
patent: 3864714 (1975-02-01), Sasaki
patent: 4319824 (1982-03-01), Rossmann

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