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.

Date of Patent:
Mar. 20, 2012

Filed:

Mar. 27, 2009
Applicants:

Naoko Muguruma, Wako, JP;

Shinji Yamada, Wako, JP;

Yuji Matsumochi, Wako, JP;

Yuuji Fujimoto, Wako, JP;

Yojiro Koiwa, Wako, JP;

Inventors:

Naoko Muguruma, Wako, JP;

Shinji Yamada, Wako, JP;

Yuji Matsumochi, Wako, JP;

Yuuji Fujimoto, Wako, JP;

Yojiro Koiwa, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A chain tensioner device having a first slide surface of a main arm pivotably supported at an upper end thereof, and a second slide surface of a sub-arm pivotably supported at a lower end thereof. The first and second slide surfaces slidably abut against each other. When the main arm is biased toward a timing chain via the sub-arm by a biasing force of a plunger of a tensioner lifter, a stroke of the main arm is increased with respect to a stroke of the plunger.


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