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. 27, 1988
Filed:
Apr. 21, 1987
Applicant:
Inventors:
Victor Zarife, Saint-Germain Des Pres, FR;
Charles Zermati, Maurepas, FR;
Gilles Argy, La Queue en Yvelines, FR;
Assignee:
Hutchinson, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
474138 ; 2671401 ;
Abstract
A tensioner is provided for a power transmission belt comprising a return spring associated with the axis of a tensioner roller co-operating with the belt to control the displacement of said roller under the action of said spring with hydraulic type means for the dampening of vibrations generated in the belt. The spring is covered with an elastomer forming a sleeve closed at one of its ends by an obturator for defining said hydraulic dampening means which comprise at least one variable volume chamber filled with a liquid and closed at one of its extremities by a dissymmetrical valve device.