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. 17, 2007
Filed:
Jun. 09, 2005
Manohar Das, Rochester Hills, MI (US);
James W. Strausbaugh, Clarkston, MI (US);
Vernon Fernandez, Rochester Hills, MI (US);
Gerald Grzadzinski, Sterling Heights, MI (US);
Manohar Das, Rochester Hills, MI (US);
James W. Strausbaugh, Clarkston, MI (US);
Vernon Fernandez, Rochester Hills, MI (US);
Gerald Grzadzinski, Sterling Heights, MI (US);
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Abstract
A method for estimating weld nugget diameter includes receiving current and voltage inputs, a time input, and a force input. In certain embodiments, the method also uses other weld parameters including type of material, type of stack, stack thickness, applied force, preheat current, RMS value of weld current, weld level, and weld time. The method further determines a resistance curve based on the current and voltage inputs, and time input. It also derives parameters from the resistance curve, and determines a weld nugget diameter estimate based on both resistance parameters.