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:
May. 21, 1991
Filed:
Feb. 12, 1990
Applicant:
Inventor:
Donald M Harvey, Webster, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
3542341 ; 354457 ; 354250 ;
Abstract
An electrically operated shutter for photographic apparatus, particularly cameras, wherein a movable element for blocking and unblocking the light path to the film is operated by the bending and unbending of a bimetallic element upon heating by electric current and subsequent cooling, preferably with the use of heat sink means moveable into heat transferring relation with the bimetallic element to hasten cooling.