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. 20, 2022
Filed:
Feb. 26, 2018
Applicant:
Borgwarner Inc., Auburn Hills, MI (US);
Inventors:
Keith B. Cobb, Cortland, NY (US);
Kevin Todd, Freeville, NY (US);
Assignee:
BorgWarner Inc., Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 7/08 (2006.01);
U.S. Cl.
CPC ...
F16H 7/0848 (2013.01); F16H 7/08 (2013.01); F16H 2007/0802 (2013.01); F16H 2007/0806 (2013.01); F16H 2007/0812 (2013.01); F16H 2007/0853 (2013.01); F16H 2007/0855 (2013.01); F16H 2007/0859 (2013.01);
Abstract
A variable force tensioner (VFT) system that includes a primary piston split into two chambers disposed within a primary bore. The two chambers including a first low pressure chamber having a primary reservoir therein that feeds fluid through a check valve into a second high pressure chamber to control a biasing force on the primary piston. A piston bore clearance path can extend along a groove in the primary bore to feed oil back to the primary reservoir from the high pressure chamber.