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. 16, 1982
Filed:
Aug. 21, 1979
Oliver A Bell, Jr, Statesville, NC (US);
Randall C Gilleland, Troutman, NC (US);
Davey J Chance, Concord, NC (US);
Colt Industries Operating Corp, New York, NY (US);
Abstract
Included in the circuit are a pair of counter timer circuits, a pair of inverters and a D-type flip flop. The inputs of the counters are tied to a programmable computer buss. A number is loaded into the first counter representative of machining power pulse on-time and a second number is loaded into the second counter representative of machining power pulse off-time. As the first counter counts to 0, the pulse output from the first counter is passed through an inverter to the second counter to enable it. After the second counter counts to 0 there will be provided an output through the second inverter to initiate the operation of the first counter. The pulses which are produced at the termination of each count provide operation of a following flip-flop stage which is toggled to provide on-off time for the machining power pulses to the following power module of the electrical discharge machining apparatus.