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. 05, 1993
Filed:
Sep. 05, 1991
Koichi Takahashi, Kanagawa, JP;
Kiichiro Kitagawa, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A photographic film cassette where rotation of a spool causes a film leader to advance to an exterior of a cassette shell from a film chamber through a film passageway. A pair of flanges are provided on both ends of the spool. Round ridges formed on inside surfaces of the flanges are in contact with edges of an outermost convolution of a roll of film. The roll of film is thereby prevented from loosening. A plurality of radially extending slits formed on the flanges in a radial manner divides the flanges into sections. The resistance of the flanges is reduced when the flanges are spread for releasing the film leader by spreaders. In another preferred embodiment, a plurality of holes or openings is formed on the flanges in order to reduce the resistance of the flanges against a spreading force for releasing the film leader.