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:
Jun. 02, 1992
Filed:
Mar. 04, 1991
Applicant:
Inventors:
Assignees:
Dr. Ing. h.c.F. Porsche AG, both of, DE;
Hydraulik-Ring GmbH, both of, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ; F02B / ; F16H / ;
U.S. Cl.
CPC ...
123 9031 ; 474110 ; 474111 ;
Abstract
A chain tensioner for an internal-combustion engine comprises a hydraulic piston which is longitudinally guided in a housing bore and on which a tensioning shoe is placed on one side and which, from the direction of the other side, is pressed against the chain by a coil spring. For the damping of chain thrashing, the hydraulic piston is acted upon by hydraulic pressure in the tensioning direction as well as in the opposite direction.