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:
Jan. 09, 1990
Filed:
Nov. 15, 1988
Seikosha Co., Ltd., Tokyo, JP;
Abstract
A device for activating shutter blades relative to a shutter opening and utilizing a control signal from an electronic circuit includes an electric motor rotatable clockwise and counterclockwise according to a control signal from the electronic circuit, a gear driven by the motor, the gear being located on one side of the shutter opening, fixed pivot axes located on an opposite side of the shutter opening, and a shutter operable device comprising shutter blades pivotable about the fixed pivot axes, the shutter operable device having gear teeth meshing with the gear such that the gear is operable to pivot the shutter blades clockwise and counterclockwise about fixed pivot axes to open and close the shutter opening.