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:
Oct. 06, 1992
Filed:
Mar. 29, 1990
Applicant:
Inventor:
Frank D Weber, San Diego, CA (US);
Assignee:
Anacomp Inc., Carmel, IN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
3541731 ; 354275 ; 352 / ; 242 712 ;
Abstract
A film canister with non-contacting means for indicating and facilitating sensing and calculation of film roll diameter and length of film left in the canister, and providing indication of film-out. The system for sensing the roll diameter comprises the canister, an inductive sensor and metered feed rollers. The system for calculating the film diameter and length and determining film-out comprises a microprocessor with visual indicating means.