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:
Dec. 29, 2020
Filed:
Apr. 23, 2020
Applicant:
Sri International, Menlo Park, CA (US);
Inventors:
Alexander Steele Kernbaum, Sunnyvale, CA (US);
Curt Salisbury, San Ramon, CA (US);
Assignee:
SRI International, Menlo Park, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
F16H 13/08 (2006.01); F16H 1/28 (2006.01); F16H 13/06 (2006.01); F16C 33/32 (2006.01);
U.S. Cl.
CPC ...
F16H 13/08 (2013.01); F16C 33/32 (2013.01); F16H 1/28 (2013.01); F16H 13/06 (2013.01);
Abstract
An apparatus includes a first ring having an open annular space and a variable-width groove disposed on an interior peripheral surface of the first ring; a second ring rotatable within the open annular space of the first ring, where the second ring has a respective variable-width groove disposed on an exterior peripheral surface of the second ring; and a plurality of rollers disposed between, and configured to roll on, the interior peripheral surface of the first ring and the exterior peripheral surface of the second ring and rotatable therebetween.