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:
Jan. 07, 2003
Filed:
Jun. 29, 2000
Applicant:
Inventors:
Hideshi Shibata, Shizuoka, JP;
Kanji Hanashima, Kanagawa, JP;
Ichiro Kubo, Shizuoka, JP;
Shuichiro Wada, Shizuoka, JP;
Masahito Tanemoto, Shizuoka, JP;
Assignee:
Nichias Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 1/502 ;
U.S. Cl.
CPC ...
F16J 1/502 ;
Abstract
A metal C-shaped ring gasket is constructed so that a satisfactory sealing property can be obtained even with a low clamping pressure. The metal C-shaped ring gasket is made of an austenite stainless steel and constructed so as to have a superficial roughness below 0.2 &mgr;m Ra and a superficial hardness below 230 Hv by electrolytic polishing.