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. 03, 2007
Filed:
Aug. 04, 2004
Applicants:
Elliott K. Stava, Sagamore Hills, OH (US);
Keith L. Clark, Concord, OH (US);
Inventors:
Elliott K. Stava, Sagamore Hills, OH (US);
Keith L. Clark, Concord, OH (US);
Assignee:
Lincoln Global, Inc., City of Industry, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 9/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device to control operation of a power source for an electric arc welder comprising an oscillator for inducing a high frequency voltage into a series circuit including the welding gap, a detector tuned to the high frequency for sensing the level of current in the series circuit at the high frequency and an output circuit to create a start signal when the received signal level exceeds a given value representing a resistance in said gap below a given amount.