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. 30, 1996
Filed:
Oct. 26, 1994
Applicant:
Inventors:
Kazuo Ohta, Tokyo, JP;
Shunichi Kiyosawa, Tokyo, JP;
Shoji Seike, Nagoya, JP;
Toshiichi Ikami, Konan, JP;
Tatsuya Hishiki, Nagoya, JP;
Assignees:
Tokyo Electric Power Services Co., Ltd., , US;
NGK Insulators, Ltd., , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277229 ; 277D / ; 428403 ; 428404 ;
Abstract
In a composite sealing material having an inner portion and a carbon outer portion, a bulk density of the carbon outer portion is set in a range of 0.3.about.2.0 g/cm.sup.3, preferably in a range of 0.5.about.1.5 g/cm.sup.3, or fiber members are mixed in the carbon outer portion, or an oil layer is arranged on the carbon outer portion, or an organic layer or an inorganic layer is arranged on the carbon outer portion, so as to improve sealing properties of sealing members formed by using the composite sealing materials.