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:
Oct. 21, 2003
Filed:
Feb. 12, 2001
Applicant:
Inventor:
Fred Galesloot, Lelystad, NL;
Assignee:
AGA Aktiebolag, Lidingo, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 3/538 ;
U.S. Cl.
CPC ...
B23K 3/538 ;
Abstract
Arrangement for improving quality in fusion welding operations where protective gas is supplied to the welding point via a hose line. The arrangement comprises means ( ), such as a bypass line connected parallel to the solenoid valve ( ) which is usually connected into the protective-gas hose ( ), in order make a small flush-gas flow pass through the protective-gas hose ( ) or a considerable part of its length, when the normal protective-gas flow is shut off. In this way, the quantity of impurities brought along by the protective-gas flow from the inside of the protective-gas hose ( ) and supplied to the pool is reduced.