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:
Feb. 25, 2014
Filed:
Sep. 22, 2011
Shinichiro Watarai, Handa, JP;
Shinichiro Watarai, Handa, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
The torsion angle between a first rotation member and a second rotation member can be increased to lower the rigidity of a resilient member, thereby enhancing the attenuation property of torsional vibration. The torsional vibration damping apparatuscomprises a pair of disc plateshaving the rotation torque from an internal combustion engine transmitted thereto, input gearsrotatably supported on the disc plates, an output gearprovided to be relatively rotatable with respect to the disc platesand held in mesh with the input gears, a boss membersplined to an input shaftof a power transmission train, and a coil springhaving one end portion fastened to the input gearand the other end portion fastened to the input gear. The input gearhas a crank memberradially spaced apart from a gear pinof the input gearto support one end portion of the coil spring, while the input gearhas a crank memberradially spaced apart from a gear pinof the input gearto support the other end portion of the coil spring