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:
Oct. 26, 1982
Filed:
May. 14, 1980
Hugh Menown, Writtle, GB;
English Electric Valve Company Limited, Chelmsford, GB;
Abstract
The invention concerns thyratrons and in particular thyratrons which are required to be able to conduct protectively in a reverse direction. In order to assist in such reverse conduction an electrode which at such times acts as a cathode e.g. a conventional anode is formed or includes material of low work function such as tungsten impregnated with barium aluminate. Where the electrode in question is a plate anode the disc or plate is itself formed of the low work function material. Where the anode is a so-called hollow anode material of low work function may be introduced within the interior of the hollow anode. Where the anode electrode is in the well known form of an inverted cup material of low work function may be provided as a layer on the surface thereof facing the cathode.