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. 13, 1977
Filed:
Nov. 10, 1976
Jean Bullat, Bonneville, FR;
Carpano & Pons, , FR;
Abstract
A drive mechanism, for example of a blind with vertical slats, comprises first and second rotatable driving elements kinematically connected to a common rotary actuating element respectively by a first coupling arranged to immediately couple the first driving element for a limited rotation with the actuating element when the latter is rotated and a second coupling arranged to couple the second driving element for rotation with the actuating element after a given rotation of the latter. Each coupling comprises, on the first driving element and a facing fixed surface for the first coupling, and on the second driving element and the actuating element for the second coupling, a helix or spiral ramp and a facing transverse groove housing a ball which allows a limited relative rotation of the respective parts.