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:
Sep. 26, 2000
Filed:
Jun. 01, 1998
Applicant:
Inventors:
Antonio Belloni, Codogno, IT;
Luca Di Stefano, Turin, IT;
Assignee:
SAIPEM S.p.A., San Donato Milanese, IT;
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21912434 ; 21912512 ;
Abstract
A process for automatically tracking a joint bevel during butt welding of coaxial pipes includes the steps of observing electrical parameter values relating to the voltage, current and voltaic arc impedance and comparing these values with preset sample values stored in a governing unit. The governing unit controls a driving source for the orientation of the welding torch in the joint bevel.