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. 04, 1986
Filed:
Sep. 30, 1982
David Katz, Tel Aviv, IL;
Metalworking Lasers International Ltd., Neve Sharett, IL;
Abstract
Apparatus for establishing and maintaining a stable discharge across a stream of flowing gas, particularly useful for high-power lasers, comprises working electrodes disposed on opposite sides of the gas flow channel, and starting electrodes adjacent to the upstream working electrodes. Each working electrode includes a ballast impedance and is connected between a high-voltage source and a point of fixed reference potential. Each starting electrode includes a substantially larger ballast impedance and is connected to the point of fixed reference potential such that each starting electrode is effective to bring the point of fixed reference potential to the upstream working electrode to start the discharge, and to draw little current after the discharge has been started.