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:
Nov. 28, 2000
Filed:
Apr. 21, 1998
Applicant:
Inventor:
Isao Suzuki, Tokyo, JP;
Assignee:
MKS Japan, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
25112915 ; 251356 ; 251368 ; 62323 ;
Abstract
A valve body includes: a main body having a recess formed in a surface thereof facing a valve seat. A sealing member fills the recess of the main body. The sealing member is made of annealed nickel. The annealed nickel has a low hardness, so that the sealing member is slightly depressed by abutment thereof against the valve seat. The sealing member is then hardened by further application of stresses. Therefore, complete sealing between the sealing member and the valve seat can be achieved.