Preventing shutter-rebound in camera

Details Preventing shutter-rebound in camera Preventing shutter-rebound in camera

2007-01-30

2007-01-30

Perkey, W. B. (Department: 2851)

Photography

Camera detail

Shutter

C396S454000, C396S489000

Reexamination Certificate

active

10975864

ABSTRACT:
A normally closed shutter in a camera has at least one blade that is moved to open and close the shutter. A movable blade-driver in the camera has a supporting connection with a fixed support to support the blade-driver for movement, and has a driving connection with the shutter to drive at least the one blade to open and close the shutter when the driver is moved. A fixed blocking ramp in the way of the blade-driver stops the blade-driver once the blade-driver has moved to drive at least the one blade to close the shutter. The fixed ramp is inclined to urge or cam the blade-driver to create a high friction-type force at the supporting connection that impedes movement of the blade-driver to drive at least the one blade to re-open the shutter, whereby the shutter is prevented from being reopened unintentionally.

REFERENCES:
patent: 2537888 (1951-01-01), Fuerst
patent: 5136324 (1992-08-01), Tsuboi et al.
patent: 5258797 (1993-11-01), Oyoshi et al.
patent: 5721995 (1998-02-01), Katsura et al.
patent: 6554502 (2003-04-01), Naganuma
patent: 2002/0136555 (2002-09-01), Watabe et al.
patent: 2003/0118331 (2003-06-01), Stiehler et al.

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