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:
Jul. 04, 2000
Filed:
Mar. 05, 1998
Applicant:
Inventors:
Masaki Tsuchiya, Yokkaichi, JP;
Hiroaki Suzuki, Nagoya, JP;
Assignee:
Daido Tokushuko Kabushiki Kaisha, Nagoya, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; H05B / ; C21D / ;
U.S. Cl.
CPC ...
148526 ; 148567 ; 219617 ; 219651 ;
Abstract
A gas shielding apparatus comprising a main gas jacket having induction heating means, and front gas jacket and rear gas jacket integrally disposed at supply side and discharge side of a member to be bonded or a member to be heated of the main gas jacket, wherein gas shielding is achieved by setting the internal pressure of the main gas jacket lower than the internal pressure of the front gas jacket and rear gas jacket, so that the holding time of the shielding gas jacket in the main gas jacket becomes long.