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. 17, 2022
Filed:
Jun. 27, 2018
Nok Corporation, Tokyo, JP;
Yusuke Yoshida, Kitaibaraki, JP;
Koji Watanabe, Kitaibaraki, JP;
NOK CORPORATION, Tokyo, JP;
Abstract
A seal ring capable of stabilizing sealing performance while reducing rotation torque. A seal ringhas a plurality of first dynamic pressure generation grooveand a plurality of second dynamic pressure generation grooveon an outer peripheral surface thereof with intervals in the circumferential direction, the plurality of first dynamic pressure generation grooveextending from a position close to a first side surfaceA with respect to the center of width in an axial direction to the first side surfaceA and configured to generate dynamic pressure with relative rotation between a housing and the seal ring, and the plurality of second dynamic pressure generation grooveextending from a position close to a second side surfaceB with respect to the center of width in the axial direction to the second side surfaceB and configured to generate dynamic pressure with the relative rotation between the housing and the seal ring