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:
Jun. 10, 1997
Filed:
Feb. 16, 1996
Applicant:
Inventors:
Stanley W Stephenson, III, Spencerport, NY (US);
Tom M Seamans, Corfu, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
396513 ; 396538 ;
Abstract
A bi-directional driver device for opening and closing a light shield of a film cassette is alternately biased open and closed via an overcenter spring, to open and close the light shield. The final opening torque the spring exerts against the driver device when the light shield is completely opened is substantially less than the final closing torque the spring exerts against the driver device when the light shield is completely closed. Thus, the final opening torque will not cause any deformation of the light shield that might allow light leakage into the cassette interior when the light shield is closed.