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. 02, 2013
Filed:
Dec. 15, 2009
Masaya Otsuka, Aso, JP;
Shigemi Matsuo, Aso, JP;
Daihachi Shojima, Aso, JP;
NOK Corporation, , JP;
Abstract
To prevent breakage of a sealing device having a main sealing body installed within an annular installing groove () formed in one member () to slidably and concentrically contact with the other member () and a backup ring () arranged at a non-sealing space side of said main sealing body, a height (h±Δh) of said backup ring () in a facing direction of a bottom surface () of said installing groove () to the other member () is greater than a facing distance (L±ΔL) between the bottom surface () and the other member (), and said backup ring () has a cross-sectional shape which is symmetrical in a thickness direction thereof, and has an easily compressible part () which can be compressed to the extent of the difference (x) between said height (h±Δh) and said facing distance (L±ΔL).