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. 22, 2013
Filed:
Apr. 01, 2011
Toru Nishitani, Nisshin, JP;
Toru Nishitani, Nisshin, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A torsion vibration damping apparatus can prevent the strengths of its projection portions from being decreased even if the torsion vibration damping apparatus is made small in size, and can damp torsion vibration caused by a transitional torque when a hub member is rotated in the positive side relatively rotated with respect to a rotation member, thereby making it possible to enhance a damping property of the torsion vibration. The projection amount of a projection portionA circumferentially projecting in the positive side from the radially center axis O of the projection portion of a hub flangeis formed smaller than the projection amount of the projectionA circumferentially projecting in the negative side from the radially center axis O of the projection portion. The distance Lbetween the positive side surfaceof the projection portionA and the stopper portionis longer than the distance Lbetween the negative side surfaceof the projection portionA and the stopper portionwhen the hub memberand the disc membersare at their neutral positions.