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:
Nov. 30, 1976
Filed:
Feb. 24, 1975
Applicant:
Inventors:
Kimitika Yamada, Tokyo, JA;
Kiyoyuki Arai, Tokyo, JA;
Assignee:
Copal Company Limited, , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
352128 ; 352 72 ; 242 / ;
Abstract
A film cartridge for audio-visual projectors comprising a concavity portion provided in a part of a side wall thereof and capable of cooperating with a sprocket means provided on a projector body to run the endless film in the cartridge, and a groove formed in a part of a peripheral edge thereof to contain a film loop to be formed by a loop setting means provided in the projector body, thereby to simplify the entire structure of the film cartridge.