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:
Apr. 29, 2014
Filed:
Oct. 15, 2010
Yu Miyahara, Susono, JP;
Hiroyuki Amano, Susono, JP;
Shinichiro Suenaga, Susono, JP;
Shingo Aijima, Susono, JP;
Yu Miyahara, Susono, JP;
Hiroyuki Amano, Susono, JP;
Shinichiro Suenaga, Susono, JP;
Shingo Aijima, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
To provide a simply-structured vibration damping device having excellent vibration damping capacity. A vibration damping device is configured to damp torsional vibrations of a rotary member of a hydraulic transmission, in which the rotary member is rotated integrally with a drive side impelleror with a driven side impeller, and in which the drive side impellerand the driven side impellerare connected with a lockup clutchactuated by fluid pressure. The vibration damping device comprises: a holding chamberrotated integrally with the driven side impeller; a rolling memberheld in the holding chamber, which is rotated in a rotational direction of the driven side impellerbut allowed to rotate relatively with the driven side impeller; and a movable memberconfigured to lock the rolling memberin the holding chamberwhen actuated by the fluid pressure for disengaging the lockup clutch, and to unlock the rolling memberin the holding chamberwhen actuated by the fluid pressure for engaging the lockup clutch