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:
Nov. 07, 1995
Filed:
Apr. 05, 1994
Gilbert E Flowers, Cincinnati, OH (US);
Joel H Cohen, Cincinnati, OH (US);
Earl L Kelly, Jr, West Chester, OH (US);
Levi Williams, Milford, OH (US);
Gray W Grubbs, Burlington, KY (US);
Stefan P Kyselica, Hinsdale, IL (US);
General Electric Company, Cincinnati, OH (US);
Abstract
A variable polarity device reverses the polarity of an electrically conductive workpiece and an electrode, having opposite polarities, between positive and negative in a low D.C. range of about 0.5-45 amps. Combined with the device is a control means which schedules a frequency of time rate of the reversing in the low time frequency of about 1-1000 cycles per second as well as the electric current at each polarity to provide a series of time and current defined polarity cycles for D.C. arc welding apparatus.