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. 11, 2008
Filed:
May. 30, 2003
Hideaki Watanabe, Saitama, JP;
Kazumi Ohki, Saitama, JP;
Takashi Yoshida, Saitama, JP;
Masakazu Isono, Saitama, JP;
Hideaki Watanabe, Saitama, JP;
Kazumi Ohki, Saitama, JP;
Takashi Yoshida, Saitama, JP;
Masakazu Isono, Saitama, JP;
Fukoku Co., Ltd., Ageo, JP;
Abstract
A viscous damper having an annular inertial mass body received in a case together with a damping liquid, and a hub for fixing the case on the rotary shaft of an internal combustion engine. The case including a case main body of substantially U-shaped cross section, and a cover for liquid-tightly closing an opening directed to one axial side of the main body, and defining a sealed chamber in the inside. The inertial mass body is made by superposing and joining a plurality of annular plates. By thrust bearings attached in holes in the annular plate on body axial sides of the inertial mass body and by a journal bearing attached in a recessed groove in the inner periphery of the inertial mass body, the inertial mass body is supported both axial sides and radially and disposed for peripheral rotation in the sealed chamber.