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:
Feb. 26, 2019
Filed:
Jul. 27, 2015
Borgwarner Inc., Auburn Hills, MI (US);
Matthew W. Crump, Cortland, NY (US);
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
A pressure relief valve () in a hydraulic tensioner for an endless loop power transmission member and method of assembly can include a check valve member () positioned within a fluid passage () defined by a housing () for movement toward and away from a valve seat () defined by the housing (), a spring () normally biasing the check valve member () toward the valve seat (), and a spring retainer () assembled within the fluid passage () to a variable depth in response to feedback pressure for automatically adjusting a biasing force of the assembled spring () to compensate for tolerances effecting a relief pressure value of an assembled pressure relief valve and allowing control of the relief pressure value to be within a predetermined range with respect to a predetermined target relief pressure value for driving the check valve member () away from the valve seat ().