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:
Nov. 27, 2012
Filed:
Jun. 13, 2008
Dominik Hofmann, Ebern, DE;
Roman Kern, Forchheim, DE;
Dominik Hofmann, Ebern, DE;
Roman Kern, Forchheim, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A hydraulic tensioning system (), which is used in traction mechanism drives, particularly chain drives of internal combustion engines, is provided. The tensioning system () includes a piston (), which is designed in the shape of a crucible, subjected to a pressure by a pressure spring (), guided in a linearly displaceable manner in a housing () and spring-loaded against a traction mechanism. Hydraulic fluid can flow out of a pressure chamber () depending on an actuating direction of the piston () via an overpressure valve () forming a damper and associated with the piston () or can enter via a one-way valve () of the housing () into the pressure chamber (). The overpressure valve () encloses a valve plate () that is integrated in the piston (), and a pressure spring () of the piston () surrounds an outside of the valve housing () of the overpressure valve ().