Tensioning and releasing assembly for a camera shutter

Details Tensioning and releasing assembly for a camera shutter Tensioning and releasing assembly for a camera shutter

1981-08-31

1983-02-08

Gonzales, John

354237, G03B 964, G03B 1742

Patent

active

043726615

ABSTRACT:
An assembly including a single activation element for tensioning and releng the tension on a camera shutter is provided. The activating element is an elongated slide displaceable transverse to the axis of the lens having activating surfaces for tensioning the shutter when displaced in a first direction towards the axis of the lens and for releasing the shutter when the lever is displaced in the direction away from the axis of the lens. The slide is displaced towards the lens axis by the film transport and tensions the shutter by pivoting a shutter tension lever in engagement with a shutter ring and locks the shutter ring. The slide is displaced away from the lens axis and unlocks the shutter ring which is biased for opening the shutter. In a further embodiment of the invention, a camera including the assembly also includes a separately activated integrated time-delay release mechanism. Activation of the time release mechanism releases the slide from engagement and permits displacement of the lever after a fixed time to permit release of tension on the shutter. By providing a single activating element which performs both functions, required movements and forces are reduced as well as occupying less space within the interior of the camera. The assembly is particularly well suited for a camera wherein the lens and shutter are displaceable in and out of the camera compartment.

REFERENCES:
patent: 2028752 (1936-01-01), Burger
patent: 2336396 (1943-12-01), Fischer
patent: 4106041 (1978-08-01), Lange

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