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:
Oct. 23, 2018
Filed:
Aug. 28, 2015
Nok Corporation, Tokyo, JP;
Hiroaki Monma, Fujisawa, JP;
Mitsuo Watanabe, Kitaibaraki, JP;
Shuji Yoshitsune, Aso, JP;
Kota Henmi, Aso, JP;
NOK CORPORATION, Tokyo, JP;
Abstract
A sealing structure suppresses possible damage to a seal ring because of a backup ring. The sealing structure is characterized in that a cut portionthat is cut in a planar shape is formed in a backup ringat one position in a circumferential direction, the cut portionis configured such that a cut surfaceis oblique to a central axis of the backup ring, an acute angle of angles between a surface on the high pressure side of the backup ringand the cut surfaceis set to not less than 15° and not more than 30°, and the backup ringis formed of a resin material having Rockwell hardness of 100 or less, durometer hardness of 70 or less, and elastic modulus of 1.0 GPa or less.