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:
Aug. 11, 2009
Filed:
Jul. 10, 2006
Russell K. Myers, Hudson, OH (US);
William S. Houston, Avon, OH (US);
Timothy M. O'donnell, Chesterland, OH (US);
Robert Hasan, Euclid, OH (US);
Russell K. Myers, Hudson, OH (US);
William S. Houston, Avon, OH (US);
Timothy M. O'Donnell, Chesterland, OH (US);
Robert Hasan, Euclid, OH (US);
Lincoln Global, Inc., Monterey Park, CA (US);
Abstract
Electric arc welder () performs a given weld process with selected current waveform performed between electrode () and workpiece (). Welder () includes a controller with a digital processor (), sensor () for reading instantaneous weld current, and circuit () to convert the instantaneous current into a digital representation of the level of instantaneous weld current. Digital processor () has program circuit () to periodically read and square the digital representation at a given rate, register () for summing a number N of square digital representations to give a summed value, and an algorithm () for periodically dividing the summed value by the number N to provide a quotient and then taking the square root of said quotient to thereby digitally construct rms signal () representing the root mean square of the weld current.