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:
Apr. 12, 2016
Filed:
Mar. 11, 2013
Nok Corporation, Tokyo, JP;
Kazunari Seki, Kitaibaraki, JP;
Koji Watanabe, Kitaibaraki, JP;
Wataru Tokunaga, Kitaibaraki, JP;
Yuki Takao, Fujisawa, JP;
Fangman Xu, Fujisawa, JP;
Hirotaka Mizuta, Fujisawa, JP;
Keisuke Nakashima, Fujisawa, JP;
Takuya Igawa, Fujisawa, JP;
Yusuke Yoshida, Fujisawa, JP;
Hideya Watanabe, Kitaibaraki, JP;
Yosuke Kondo, Kitaibaraki, JP;
NOK CORPORATION, Tokyo, JP;
Abstract
The sealing device includes: an outer peripheral ringthat is in contact with a side wall surface of an annular grooveat a low pressure side (L), and slides with respect to an inner peripheral surface of a shaft hole in a housingthrough which a shaftis inserted. An inner peripheral ringmade of a rubber-like elastic body that is in contact with an inner peripheral surface of the outer peripheral ringand a groove bottom surface of the annular groove, respectively. The outer peripheral ringis formed on its outer peripheral surface with a concave portionwhich extends from an end of a high pressure side (H) to a position which does not arrive at an end of a low pressure side, so as to introduce fluid thereinto from the high pressure side.