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. 25, 1985
Filed:
Jul. 13, 1983
Atsushi Kidawara, Tokyo, JP;
Kazunari Kobayashi, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A film cassette includes a cassette main body with a film supply portion and a film take-up portion, a spool rotatably arranged at said film take-up portion of the cassette main body, and bearings arranged at the film take-up portion for rotatably supporting the spool. The spool comprises an outer cylinder around which a film is wound, an inner cylinder which is slidable in an axial direction relative to the outer cylinder and which is rotatable with the outer cylinder, and a compression spring, one end of which is engaged with the outer cylinder and the other end of which is engaged with the inner cylinder and biasing and moving the outer and inner cylinders relative to each other in the axial direction.