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. 30, 2019
Filed:
Feb. 17, 2017
Applicant:
Exedy Corporation, Neyagawa-shi, Osaka, JP;
Inventors:
Mitsuru Kuwahata, Neyagawa, JP;
Masahiro Maeda, Neyagawa, JP;
Assignee:
EXEDY CORPORATION, Neyagawa-Shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 45/02 (2006.01); F16F 15/121 (2006.01); F16F 15/123 (2006.01);
U.S. Cl.
CPC ...
F16H 45/02 (2013.01); F16F 15/1216 (2013.01); F16F 15/12346 (2013.01); F16F 2232/02 (2013.01); F16F 2236/08 (2013.01); F16H 2045/0205 (2013.01); F16H 2045/0221 (2013.01); F16H 2045/0226 (2013.01); F16H 2045/0278 (2013.01);
Abstract
A spring assembly for absorbing and attenuating a torsional vibration includes an outer coil spring and an inner coil spring. The inner coil spring is disposed in an interior of the outer coil spring. The inner coil spring has a shorter free length than the outer coil spring. The inner coil spring is chamfered on end surfaces of both ends thereof. The inner coil spring has an outer diameter set to be smaller at least at an endmost winding on each of the ends thereof than at other windings thereof.