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:
Mar. 27, 1990
Filed:
Jul. 13, 1989
Applicant:
Inventors:
Hiroyuki Inoue, Saitama, JP;
Yuichi Futami, Saitama, JP;
Hiroshi Saisho, Aichi, JP;
Kazuharu Yamada, Aichi, JP;
Assignee:
Tsubakimoto Chain Co., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
474110 ; 474138 ;
Abstract
A hydraulically damped tensioner for a belt transmission system. A piston slidable with clearance in a cylinder form front and rear oil-filled chambers communicating through a passage in the piston with a check valve for restricting flow from the rear chamber to the front chamber. A piston rod is urged through the front chamber and against a roller by a spring in the rear chamber imparting tension on the belt. An opening, sealed by a removable plug, communicate with the front chamber to provide access for filling oil in both chambers.