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:
Sep. 03, 1991
Filed:
May. 11, 1990
Applicant:
Inventors:
Nobuo Shinozaki, Yotsukaido, JP;
Hiroto Tsuyuki, Yotsukaido, JP;
Assignee:
Seikosha Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
3542341 ;
Abstract
A mechanism for opening and closing a shutter includes a rotatably mounted drive member, a motor operable to rotatably drive the drive member, an actuator for opening and closing the shutter when the drive member is rotated, and an operating arrangement between the drive member and the actuator operable to provide a gear driving operating relationship between the drive member and the actuator during one part rotation of the drive member and a non-driving relationship during another part rotation of the drive member.