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:
Dec. 17, 2013
Filed:
Nov. 11, 2009
Applicants:
Steven R. Peters, Huntsburg, OH (US);
Frank M. Dragolich, Jr., Chardon, OH (US);
David Barton, Twinsburg, OH (US);
Inventors:
Steven R. Peters, Huntsburg, OH (US);
Frank M. Dragolich, Jr., Chardon, OH (US);
David Barton, Twinsburg, OH (US);
Assignee:
Lincoln Global, Inc., City of Industry, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 9/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for root pass welding steel plate and pipe is provided that uses pulse arc welding having a current pulse waveform exhibiting a low constant background current and fixed frequency. The welding process may be performed without a backer or backing material.