Focal plane shutter for cameras
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Nov 21, 1989
Grant Date -
N/A
app pub date -
Dec 6, 1984
filing date -
May 14, 1976
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A camera shutter mechanism for opening and closing a shutter aperture to effect an exposure comprises a group of opening blades movable, when released, from a closed position covering the shutter aperture to an open position uncovering the shutter aperture to thereby initiate an exposure, and a group of closing blades movable, when released, from an open position uncovering the shutter aperture to a closed position covering the shutter aperture to thereby terminate the exposure. A release mechanism releases the opening blades thereby enabling them to move to the open position for initiating the exposure, and subsequently releases the closing blades thereby enabling them to move to the closed position for terminating the exposure. A driving member automatically operates immediately after completion of the exposure to move the group of opening blades back towards the closed position so that the aperture is at least partially covered thereby so as to improve the light-shielding capability of the shutter mechanism.
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Family
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Cited Art Landscape
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