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. 07, 1992
Filed:
May. 25, 1991
Applicant:
Inventor:
Robert C Beck, Conover, NC (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74650 ; 475183 ; 475184 ; 475189 ; 475196 ; 475197 ;
Abstract
A differential gear that includes a cage in which there is disposed first and second rotatable cylinders positioned adjacent to one another, each rotatable cylinder having an elliptically-shaped groove in its surface and a sphere in each groove in contact with the cage as the cylinders are rotated. The first and second rotatable cylinders are rotatable only in opposite directions.