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. 01, 2005
Filed:
Nov. 06, 2002
Mitsuo Chigasaki, Hitachi, JP;
Shizuo Matsushita, Hitachi, JP;
Jiro Kuniya, Hitachi, JP;
Yoshihisa Kiyotoki, Hitachinaka, JP;
Kikuo Takeshima, Hitachi, JP;
Akira Sakamoto, Mito, JP;
Yoshiteru Chiba, Hitachi, JP;
Mitsuo Chigasaki, Hitachi, JP;
Shizuo Matsushita, Hitachi, JP;
Jiro Kuniya, Hitachi, JP;
Yoshihisa Kiyotoki, Hitachinaka, JP;
Kikuo Takeshima, Hitachi, JP;
Akira Sakamoto, Mito, JP;
Yoshiteru Chiba, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A valve which is cobalt-free excellent in wear resistance and seizure resistance manufactured by forming valve seats for a valve disc and a valve body with a nickel base alloy in which silicide particles or boride particles of small particle size are finely dispersed, and the valve seat is bonded to the valve disc or the valve body by way of an insert material comprising a nickel base alloy of a lower melting point by transient liquid phase diffusion bonding.