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:
Apr. 02, 2013
Filed:
Dec. 17, 2009
Applicants:
Christopher Hsu, Avon, OH (US);
Larry Church, Jefferson, OH (US);
Jeffrey J. Krupp, Vermilion, OH (US);
Inventors:
Christopher Hsu, Avon, OH (US);
Larry Church, Jefferson, OH (US);
Jeffrey J. Krupp, Vermilion, OH (US);
Assignee:
Nelson Stud Welding, Inc., Elyria, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
B23K 9/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A capacitor discharge (CD) fastener welding circuit including: an input voltage source; a rectifier bridge of diodes receiving the input voltage source; at least two capacitor charge switches linked with the rectifier bridge; at least one capacitor linked with the at least two capacitor charge switches; and at least two capacitor discharge switches linked with the capacitor and to welding output terminals.