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. 21, 1988
Filed:
Mar. 25, 1987
Bruno Blanchard, Saint Martin le Vinoux, FR;
Pierre Juliet, Grenoble, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
The invention relates to an apparatus usable for ionizing a gas comprising a cathode serving as a hot or cold cathode and to a process for using this apparatus. The apparatus includes a facing cathode and anode, the gas to be ionized successively traversing the cathode and the anode. The apparatus is characterized in that the cathode is formed by a first and second cylindrical half-electrode in face-to-face relation, the gas to be ionized passing between the half-electrode and a conductive filament connected by a first end to the first half-electrode and by a second end to the second half-electrode and located between the half-electrodes. The invention applied to all apparatuses used for ionizing a gas, such as electric arcs, unoplasmatrons and duoplasmatrons.