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:
Dec. 29, 2020
Filed:
Jul. 10, 2018
Honda Motor Co., Ltd., Tokyo, JP;
Toru Yagasaki, Saitama, JP;
Yasuhiro Yamagata, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A V surface of a pulley with which a metal element comes in contact includes first grooves extending spirally from a side of a rotation axis of the pulley to an outer side in a radial direction and one side in a circumferential direction, second grooves extending spirally to the outer side in the radial direction and the other side in the circumferential direction, and rhomboid protrusions surrounded thereby. An average circumferential width of the protrusions is smaller at a position on the inner side in the radial direction than at a position on the outer side in the radial direction. Therefore, at a position on the inner side in the radial direction of the V surface in which cracks easily occur, the average circumferential width of the protrusions is lower, such that cracks occurring on the protrusions are prevented by the grooves, and further extension of cracks is prevented.