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. 28, 2015
Filed:
Jul. 28, 2011
Hidetoshi Kaida, Kanagawa, JP;
Kouhei Kurose, Kanagawa, JP;
Hidetoshi Kaida, Kanagawa, JP;
Kouhei Kurose, Kanagawa, 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 annular end faces, as well as an outer layerformed integrally on the partially convex spherical surface. The spherical annular base memberincludes a reinforcing membermade from a metal wire netand a heat-resistant materialcontaining expanded graphite and a phosphate and integrated with the reinforcing memberin mixed form, and the outer layer includes the heat-resistant materialcontaining the expanded graphite and the phosphate and the reinforcing membermade from the metal wire netintegrated with the heat-resistant materialin mixed form, the expanded graphite in the heat-resistant materialhaving an ash content of not more than 0.1% by mass and a graphite content of not less than 99.7% by mass.