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:
May. 23, 2023
Filed:
Nov. 17, 2021
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Inventors:
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16F 15/14 (2006.01);
U.S. Cl.
CPC ...
F16F 15/145 (2013.01); F16F 2222/08 (2013.01); F16F 2232/02 (2013.01); F16F 2236/08 (2013.01);
Abstract
A torsional vibration damper having improved abrasion resistance at a portion of a rotary member to which a rolling mass is contacted, and a manufacturing method thereof. The torsional vibration damper comprises: a rotary member; an inertia body oscillating around the rotary member; and a retainer formed on the rotary member to hold a rolling mass between a pair of stoppers. A hardness of an inner surface of at least one of the stoppers is increased higher in a radially outer portion than in a radially inner portion, within a reciprocating range of the rolling mass.