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. 28, 2006
Filed:
Jun. 06, 2005
Yoshiteru Kondo, Toyohashi, JP;
Daisuke Miura, Toyohashi, JP;
Yoshiteru Kondo, Toyohashi, JP;
Daisuke Miura, Toyohashi, JP;
Newfrey LLC, Newark, DE (US);
Abstract
An arc stud welding device and method are provided, in which a stud is pulled up to an appropriate predetermined height, even after a portion of a flexible base material is dented by the stud and has returned to an original flat condition. A controller operates a linear motor to disengage the stud from the base material, operates a power source to generate a pilot arc and a main arc, and reverses the operation of the linear motor to press the stud against the base material for welding. When the stud is pulled up from the base material, the controller detects the position of disengagement of the stud from the base material, and the linear motor pulls up the stud to a predetermined position.