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:
Jul. 23, 2019
Filed:
Aug. 17, 2017
Nok Corporation, Tokyo, JP;
Kazunari Seki, Kitaibaraki, JP;
Koji Watanabe, Kitaibaraki, JP;
NOK CORPORATION, Tokyo, JP;
Abstract
A sealing device includes a seal ringmade of resin which is in close contact with a side wall surface on a low pressure side of an annular grooveand slides against an inner peripheral surface of a shaft hole in a housingthrough which a shaftis inserted. A metal springpresses the seal ringtoward an outer peripheral surface side, wherein a concave portionis formed on an outer peripheral surface of the seal ringwhich extends from an end portion on a high pressure side of the outer peripheral surface to a position which does not reach an end portion on a low pressure side of the outer peripheral surface, and introduces a fluid from the high pressure side.