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:
Apr. 18, 1989
Filed:
Apr. 11, 1988
Applicant:
Inventor:
Andre J Rousselot, Scionzier, FR;
Assignee:
Somfy, Cluses, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
7442 / ; 74459 ;
Abstract
The invention relates to a ball cage consisting of a cylindrical sleeve 1 provided with ball seats 7, 8 intended to receive balls 9, 10 intended to cooperate with a worm 11. The sleeve 1 is intended to be mounted in a cylindrical tube 2. The balls 9, 10 are retained in their seats on the one hand by a narrowed portion formed at the intersection of the perforations 7, 8 containing the balls and of a helicoidal bead 13 extending over the inner face of the cage, and on the other hand by projections 15 to 18 provided at the outer ends of the perforations. The balls are forced into their seats. The ball gage is used in the operation of doors or gates.