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:
May. 26, 1981
Filed:
Apr. 24, 1978
Applicant:
Inventors:
Assignees:
Nippon Petrochemicals Co., Ltd., Tokyo, JP;
Nippon Carbon Co., Ltd., Tokyo, JP;
Kitamura Valve Seizo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251315 ; 251368 ;
Abstract
A valve sealing device is proposed consisting of two parts, one of which contacts the body of the valve and is made of an expanded graphite compact or an expanded graphite--inorganic binder composite compact, and the other of which contacts the valve member and is made of a carbonaceous material--metallic material composite, a carbonaceous material impregnated with an inorganic binder, or a metallic material; a valve using such a sealing device is also proposed.