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:
Jan. 26, 1988
Filed:
Sep. 09, 1986
Applicant:
Inventors:
Luigi Pazzaglia, Bologna, IT;
Zelimir Belamaric, Pully, CH;
Assignee:
Cefin S.p.A., Bologna, IT;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
219110 ; 219116 ; 363 16 ; 363 95 ;
Abstract
A control device having a single static converter incorporating a rectifier and stabilizer block and a transistorized inversion block, the output signal of which is controlled by an amplitude and frequency regulator in response to a feedback signal taken off the primary or the secondary winding of the welding transformer. The device features an additional rectifier block located between the output from the secondary winding and the input to the welding rollers.