The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1987
Filed:
Apr. 22, 1985
Hiroaki Ishida, Yotsukaido, JP;
Seiko Koki Kabushiki Kaisha, Chiba, JP;
Abstract
An electromagnetically releasable shutter for a camera comprises an electromagnet (8) which is energized upon the execution of shutter releasing operation and de-energized after an exposure time corresponding to the brightness of the object has elapsed since energization, an armature lever (7) which is driven by the electromagnet (8), an actuating member (4) which starts moving to drive a diaphragm operating member (6) in a direction to open the diaphragm when the armature lever (7) is attracted by the electromagnet (8), and a shutter closing member (9) which drives the diaphragm operating member (6) in a direction to close the diaphragm when the armature lever (7) is released from the electromagnet (8). The actuating member (4) is provided with a part to restrain the operation of the shutter closing member (9) when the actuating member (4) is at the charged position. The armature lever (7) is provided with a part which enters the range of movement of the shutter closing member (9) to restrain the operation of the shutter closing member (9).