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:
Feb. 12, 1991
Filed:
Nov. 14, 1988
Applicant:
Inventor:
Knut Enke, Johannesberg, DE;
Assignee:
Leybold Aktiengesellschaft, Hanau I, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
251368 ; 13762541 ;
Abstract
In a valve, especially for a shut-off or regulating means, having of a plate-like valve body of a metal or nonmetallic material having at least one layer of hard substance applied to the valve body, the coating consists of an alloy of silicon and/or carbon, preferably of Si.sub.x C.sub.1-x (wherein -x has a value of 0 to 1), and is applied to the valve body by the method of plasma CVD or plasma polymerization, monomers (gases or gas mixtures which contain the atoms which are to form the hard coating) are used, which contain carbon or carbon and silicon.