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:
Aug. 07, 2001
Filed:
Jan. 06, 2000
Timothy J. Fuss, Rochester, NY (US);
Dennis R. Zander, Penfield, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A film-engaging sprocket drive for use with an edge-perforated filmstrip having successive uniform-pitch film perforations includes a set of two coaxial sprocket wheels each having a series of uniform-pitch film-engaging teeth that are similarly shaped to engage the filmstrip within the film perforations and that are arranged in successive pairs of one tooth from one sprocket wheel and another tooth from the other sprocket wheel. The sprocket wheels each are rotatable relative to the other to similarly increase the pitch of the two teeth in the respective pairs of teeth to greater than the pitch of the film perforations. A return spring is arranged to rotate one sprocket wheel relative to the other sprocket wheel to decrease the pitch of the two teeth in the respective pairs of teeth substantially to the pitch of the film perforations.