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:
Jul. 11, 1978
Filed:
Jan. 03, 1977
Richard R Wareham, Marblehead, MA (US);
Nicholas Gold, Arlington, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
A photographic film cassette having a stack of self-contained, self-developing film units includes leaders interconnecting the units to enable them to be withdrawn from the cassette one at a time. A Z-fold or zig-zag configuration of the film units and leaders is employed, with a leader interconnecting the leading edge of one film unit and the trailing edge of the preceding film unit. The cassette structure cooperates with the connection of the leader to the film unit leading edge to project a film unit against a cassette wall to prevent inadvertent withdrawal of the unit. Staggered loading, and alternatively symmetrical back-to-back loading of the film units in the cassette, can increase the number of film units the cassette accommodates in a limited space.