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. 20, 2016
Filed:
Jan. 29, 2013
Borgwarner Inc., Auburn Hills, MI (US);
Jason Chekansky, Asheville, NC (US);
BorgWarner, Inc., Auburn Hills, MI (US);
Abstract
A variable flow hydraulic tensioner () for a chain or belt can include a fixed member () having a first port (), and a movable member () in engaged with the fixed member (). The movable member () can include a second port () initially aligned with respect to the first port () to allow fluid flow therethrough. A first spring () can bias the movable member () with respect to the fixed member () to align the first and second ports () with respect to one another to allow fluid flow therethrough. A second spring () can have less spring force than the first spring () to bias the movable member () in an opposite direction with respect to the fixed member (), such that as the chain or belt wears, a differential force between the first and second springs () diminishes until the movable member () moves relative to the fixed member () sufficiently to offset the first and second ports () with respect to one another to prevent fluid flow therethrough.