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:
Mar. 28, 2023
Filed:
Aug. 09, 2019
Nok Corporation, Tokyo, JP;
Yusuke Yoshida, Kitaibaraki, JP;
NOK CORPORATION, Tokyo, JP;
Abstract
A seal ring has, on an outer peripheral surface side thereof, a pair of recessed partsextending in a circumferential direction on both sides in a width direction thereof to form a projection partbetween the pair of recessed parts, and has a plurality of ribsconnected to the projection partand extending to lateral surfaces of the seal ring at intervals in the circumferential direction inside the pair of recessed parts, and a plurality of ribsarranged on a sealed region side among the plurality of ribshave lateral-wall surfaces on an upstream side in a relative rotation direction of a housing with respect to a shaft, each of the lateral-wall surfaces having inclined surfaces inclined from the upstream side to a downstream side in the relative rotation direction of the housing from the projection parttoward the lateral surfaces of the seal ring.