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:
Nov. 25, 1980
Filed:
Feb. 23, 1979
Jean-Pierre Beauviala, Grenoble, FR;
Aaton S.A., Grenoble, FR;
Abstract
A device for driving the claw shaft of a motion picture camera, comprises an electric motor coupled to the claw shaft itself connected to said claw by a mechanism of the crank-connecting rod system type, for converting the movement of rotation of the electric motor into a movement of reciprocating translation. Means are provided for modulating the speed of rotation of the claw shaft as a function of the angle of rotation thereof with respect to a reference position, so that the speed of the claw at the moment of its engagement in a perforation of the film is as low as possible and that this speed then increases, during the descent of the film, according to a law such that the acceleration communicated to the film causes only a minimum stress exerted on said latter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile