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. 15, 2020
Filed:
Jan. 23, 2015
Nok Corporation, Tokyo, JP;
Eagle Industry Co., Ltd., Tokyo, JP;
Masatoshi Seki, Kitaibaraki, JP;
Takeshi Hosoe, Tokyo, JP;
Hideyuki Inoue, Tokyo, JP;
Yuichiro Tokunaga, Tokyo, JP;
NOK CORPORATION, Tokyo, JP;
EAGLE INDUSTRY CO., LTD., Tokyo, JP;
Abstract
Provided is a sealing device capable of suppressing leakage of a fluid to be sealed while reducing rotary torque regardless of rotational direction. In a sealing ring () slides against a side wall surface on a low pressure side of an annular groove, a dynamic pressure generating groove () that includes a first groove () having a constant width in a radial direction and extending in a circumferential direction and a second groove () extending from a center position of the first groove () in the circumferential direction to an inner circumferential surface and guiding a fluid to be sealed into the first groove () is provided on a sliding surface side which slides against the side wall surface. The first groove () is provided at a position within a sliding region in which the sealing ring slides against the side wall surface.