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:
Jun. 29, 1982
Filed:
Jan. 21, 1980
Applicant:
Inventor:
Alan L Kilty, Peoria, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
21913021 ; 21913031 ;
Abstract
An automatic welder control 10 for direct and reverse polarity welding has an analog signal control circuit with an isolator 34 connected therein. This prevents the establishment of a circulating current path from the welder power drive circuit 14 through the signal circuit.