Back to results
US 4,360,258 AGranted
Lens shutter mechanism for camera
AssigneeOlympus Optical Co., Ltd.
InventorAkihiko Hashimoto
Life of this patent
Estimating the term…
Abstract
A lens shutter mechanism for camera includes a shutter opening/closing lever which opens or closes a shutter blade or blades. The lever is pivotally mounted on a movable shaft which is fixedly mounted on a shutter close lever. At the same time as an electromagnet, which is used to maintain the shutter open, is deenergized, the shutter close lever is operated to cause the shutter opening/closing lever to close the shutter blade or blades.
Claims10
A lens shutter mechanism for a camera, comprising:
- a shutter blade adapted to be opened and closed to permit an exposure of a film surface;
- a shutter opening/closing lever moand connected to said shutter blade in such a manner that said shutter blade opens when said shutter opening/closing lever is moved in said first direction and said shutter blade closes when said shutter opening/closing lever is moved in said second direction;
- shutter opening drive means for operating the shutter opening/closing lever in said first direction to open the shutter blade;
- a movable shaft on which the shutter opening/closing lever is pivotally mounted;
- a shutter close lever carrying the movable shaft on its one end;
- means for urging the shutter close lever for angular movement along a first direction of an arc, which movement causes the shutter opening/closing lever to move in said second direction to close said shutter blade;
- and
- an electromagnet for attracting an armature mounted on the shutter close lever to constrain the shutter close lever against the angular movement in said first direction of said arc.
5 more elements
Dependencies are inferred from the claim text.