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:
Mar. 19, 2013
Filed:
Aug. 08, 2007
Tomoaki Nishimura, Fukushima, JP;
Yoshiyuki Kanzaki, Shizuoka, JP;
Kiyofumi Fukasawa, Kanagawa, JP;
Katsumi Abe, Kanagawa, JP;
Tomoaki Nishimura, Fukushima, JP;
Yoshiyuki Kanzaki, Shizuoka, JP;
Kiyofumi Fukasawa, Kanagawa, JP;
Katsumi Abe, Kanagawa, JP;
NOK Corporation, Tokyo, JP;
Abstract
A bonded piston seal, which comprises a metal ring, and a rubbery elastomer seal as vulcanization-bonded thereto expect the sliding site along which a mating seal member slides, where the rubbery elastomer seal is partially bonded to the metal ring through an adhesive layer, wherein the adhesive layers comprises (a) an underlayer adhesive layer comprising a phenol resin and an epoxy resin, and (b) an overlayer adhesive layer comprising a phenol resin, a halogenated polymer, and a metal oxide. Not only the distinguished initial adhesiveness, but also the distinguished water-resistance can be obtained by providing (a) the underlayer adhesive layer of the afore-mentioned components and (b) the overlayer adhesive layer of the afore-mentioned components.