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:
Oct. 10, 2017
Filed:
May. 16, 2014
Exedy Corporation, Neyagawa-shi, Osaka, JP;
Naoki Tomiyama, Neyagawa, JP;
EXEDY CORPORATION, Osaka, JP;
Abstract
A lock-up device for a torque converter is disposed between a front cover coupled to an engine-side member and a torque converter body and directly transmits a torque from the front cover to a turbine of the torque converter. The lock-up device includes a clutch portion to transmit the torque from the front cover to an output side. The lock-up device includes an intermediate member in a power transmission path between the clutch portion and the turbine. An input-side damper mechanism mounted between the clutch portion and the intermediate member attenuates variation in rotational speed. An output-side damper mechanism mounted between the intermediate member and the turbine generates a hysteresis torque larger than a hysteresis torque of the input-side damper mechanism and attenuates variation in rotational speed. The lock-up device also includes a dynamic damper device coupled to the intermediate member and that attenuates variation in rotational speed.