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:
Mar. 03, 1981
Filed:
Apr. 02, 1979
Applicant:
Inventors:
Oliver A Bell, Jr, Statesville, NC (US);
Randall C Gilleland, Troutman, NC (US);
Davey J Chance, Concord, NC (US);
Assignee:
Colt Industries Operating Corp., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23P / ;
U.S. Cl.
CPC ...
219 / ; 219 / ;
Abstract
A power supply circuit including a multivibrator and a power output module. Drive signals are provided at low power level and an FET stage is used to provide a high wattage output to operate the power output module. The power output module provides machining power pulses to the gap through a plurality of series resistors so that peak current can be regulated in the module itself.