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:
May. 14, 1991
Filed:
Jun. 27, 1989
Pierre Blanchard, Verrieres le Buisson, FR;
Thomson-CSF, Puteaux, FR;
Abstract
A device for the injection of electrons into an electron tube, having: a superconductive bar, a first end of which enters the tube, and an electrical supply. The bar acts as a cathode. Two anodes, a main anode and a secondary anode are placed in the tube, respectively in the place where the electrons are collected and in the place where the first end of the bar enters. The electrical supply provides for application of two voltages, a main voltage and a secondary voltage. Electrons are accelerated along the bar through the two voltages and acquire a kinetic energy which is at least equal to the energy of extraction from the superconductor, and are thus ejected outside the bar.