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. 04, 1997
Filed:
Jul. 09, 1996
Takahito Isoe, Tokyo, JP;
Kanji Hanashima, Yokohama, JP;
Katsumi Watanabe, Yokohama, JP;
Takashi Nemoto, Yokohama, JP;
Nichias Corporation, Tokyo, JP;
Abstract
In order to obtain an extremely good gas sealing property, in a spiral gasket, in which a metal hoop material and a filler material formed approximately in a V-shape in the cross-section are wound in a spiral, superposed on each other, only the hoop material is wound in a spiral without filler material by at least 5 turns at each of the beginning of winding on the inner side and the end of winding on the outer side. In this case there are disposed at least 4 portions fixed by welding at each of the beginning and the end of winding at positions, where the inner periphery and the outer periphery are divided with equal intervals on the inner and the outer side of the gasket body, respectively.