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. 04, 2014
Filed:
Jul. 05, 2011
Yojiro Koiwa, Wako, JP;
Shinji Yamada, Wako, JP;
Masao Seki, Wako, JP;
Tomohiro Wakabayashi, Wako, JP;
Yojiro Koiwa, Wako, JP;
Shinji Yamada, Wako, JP;
Masao Seki, Wako, JP;
Tomohiro Wakabayashi, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A chain tensioner device includes a main arm, tensioner lifter, and a sub-arm. The main arm is pivotally supported by a first shaft. The main arm slidably contacts an endless chain to apply a tension to the endless chain. The tensioner lifter includes a housing, a plunger, and a spring. The plunger is slidably held by the housing. The spring is to press the plunger such that the plunger projects from the housing. The sub-arm is disposed between the main arm and the tensioner lifter. The sub-arm is pivotally supported by a second shaft to transmit a biasing force applied by the plunger of the tensioner lifter to the main arm. A moving direction of the plunger is substantially orthogonal to a direction of a tangent at a contact portion between the plunger and the sub-arm when an elongation of the endless chain reaches a maximum elongation.