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. 23, 1988
Filed:
Apr. 15, 1987
Applicant:
Inventor:
Yasuo Minai, Yamanashi, JP;
Assignee:
Kitz Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251368 ; 251315 ;
Abstract
A material for valve seats is a composite material comprising a base material composed of PTFE and 3 to 30% by weight of PFA based on the total amount of the base material, and 5 to 30% by weight of glass fiber or 5 to 25% by weight of carbon fiber based on the total amount of the composite material. When the glass fiber is used as an additive, 5 to 25% by weight of powdered graphite or 3 to 10% by weight of molybdenum disulfide based on the total amount of the composite material is further added as occasion demands.