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:
Sep. 10, 1991
Filed:
Jan. 12, 1990
Michael T Wolf, Rochester, NY (US);
Joseph E Yokajty, Rochester, NY (US);
Bradley S Bush, Hilton, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
In a film cassette, a film spool comprises a spool core supported for rotation in an unwinding direction to thrust a leader section of a filmstrip coiled about the spool core from the cassette and in a winding direction to return the leader to the cassette, and a pair of flanges positioned along the spool core to overlie opposite sides of the film roll. The flanges have respective central openings through which the spool core axially extends to normally permit each of the flanges to be independently rotated relative to the spool core in the unwinding and winding directions. According to the invention, the spool core includes a core piece connected to a remaining portion of the spool core for limited movement within the central opening of one of the flanges, away from the remaining portion, to engage the flange to rotate the flange in unity with the spool core when the spool core is rotated in the unwinding direction, to improve the ability of the film spool to thrust the leader from the cassette, and toward the remaining portion, to disengage the flange to permit the flange to be independently rotated when the spool core is rotated in the winding direction.