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:
Jun. 18, 2019
Filed:
Dec. 25, 2015
Aisin Aw Industries Co., Ltd, Echizen-shi, Fukui, JP;
Aisin Aw Co., Ltd., Anjo-shi, Aichi, JP;
Takuya Yoshikawa, Echizen, JP;
Aki Ogawa, Echizen, JP;
Tomonori Kinoshita, Echizen, JP;
Yuji Kanyama, Echizen, JP;
Makoto Yamaguchi, Echizen, JP;
Kazuyoshi Ito, Anjo, JP;
Hiroki Nagai, Anjo, JP;
Masaki Wajima, Anjo, JP;
Takao Sakamoto, Anjo, JP;
Kazuhiro Itou, Anjo, JP;
Yoshihiro Takikawa, Anjo, JP;
Yoichi Oi, Anjo, JP;
AISIN AW CO., LTD., Anjo, JP;
AISIN AW INDUSTRIES CO., LTD, Echizen-shi, JP;
Abstract
A damper device includes first inner springs configured to transmit a torque between a drive member and an intermediate member, second inner springs configured to transmit a torque between the intermediate member and a driven member, and a rotary inertia mass damper including a sun gear serving as a mass body rotating with relative rotation of the drive member to the driven member. The rotary inertia mass damper is provided in parallel to a torque transmission path including the intermediate member, the first inner springs and the second inner springs. A damping ratio ζ of the intermediate member determined based on a moment of inertia Jof the intermediate member and rigidities kand kof the first and the second inner springs and is less than a value.