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:
Aug. 04, 2015
Filed:
Apr. 09, 2012
Osamu Miyashita, Kanagawa, JP;
Eiji Satou, Kanagawa, JP;
Koichi Ishida, Kanagawa, JP;
Toshikazu Takasago, Oita, JP;
Satoshi Matsunaga, Oita, JP;
Osamu Miyashita, Kanagawa, JP;
Eiji Satou, Kanagawa, JP;
Koichi Ishida, Kanagawa, JP;
Toshikazu Takasago, Oita, JP;
Satoshi Matsunaga, Oita, JP;
OILES CORPORATION, Tokyo, JP;
Abstract
A spherical annular seal memberincludes a spherical annular base memberdefined by a cylindrical inner surface, a partially convex spherical surface, and large- and small-diameter side annular end facesandof the partially convex spherical surface; a plurality of partially convex spherical intermediate layersformed integrally on the partially convex spherical surfaceof the spherical annular base memberand laminated in a radial direction; and an outer layerformed integrally on a partially convex spherical surfaceof the outermost partially convex spherical intermediate layerof these partially convex spherical intermediate layers