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. 25, 2008
Filed:
Aug. 23, 2004
Yasuyuki Sato, Saitama, JP;
Yoshihiro Obata, Saitama, JP;
Wataru Murai, Miyagi, JP;
Ryoji Tokieda, Saitama, JP;
Naoki Kamiya, Saitama, JP;
Hideo Shimizu, Saitama, JP;
Yasuyuki Sato, Saitama, JP;
Yoshihiro Obata, Saitama, JP;
Wataru Murai, Miyagi, JP;
Ryoji Tokieda, Saitama, JP;
Naoki Kamiya, Saitama, JP;
Hideo Shimizu, Saitama, JP;
PENTAX Corporation, Tokyo, JP;
Shinwa Heat Treatment Co., Ltd., Saitama, JP;
Abstract
A method for brazing two or more of stainless steel components for use in medical equipment, in which one component is joined to other component using a brazing material containing Au of which amount is 62.5 wt % or higher, the method comprising the steps of: a first step in which the components are subjected to a heat treatment at a temperature of 1,050 to 1,200° C. in a hydrogen containing atmosphere or in a vacuum; a second step in which one of the components is allowed to close to the other component so as to form a gap therebetween; and a third step in which the brazing material in a molten state is supplied into the gap to join the components together to manufacture a metal assembly. The joint portions formed in the metal assembly have excellent chemical resistance and corrosion resistance, and thus the metal assembly is suitably used in an endoscope.