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:
Aug. 23, 2011
Filed:
Dec. 15, 2008
Osamu Emizu, Wako, JP;
Hiroshi Yamaura, Wako, JP;
Ryuta Niimura, Wako, JP;
Yasuhiro Fukuyoshi, Wako, JP;
Takao Kudo, Wako, JP;
Osamu Emizu, Wako, JP;
Hiroshi Yamaura, Wako, JP;
Ryuta Niimura, Wako, JP;
Yasuhiro Fukuyoshi, Wako, JP;
Takao Kudo, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A tensioner for an endless transmission belt includes a plunger body and a plunger. The plunger is movably provided in the plunger body to press the endless transmission belt. A pressure chamber provided between the plunger and the plunger body is configured to store hydraulic oil supplied from an oil pump. A check valve is provided in the plunger body, configured to be opened to supply the hydraulic oil to the pressure chamber when a pressure in the pressure chamber is lower than an oil pressure from the oil pump, and configured to be closed when the pressure is higher than the oil pressure. A relief valve is provided in the plunger body within a width of the plunger in a direction orthogonal to a longitudinal direction of the plunger and configured to discharge the hydraulic oil in the pressure chamber when the pressure exceeds a predetermined value.