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.

Date of Patent:
Aug. 20, 1996

Filed:

May. 13, 1993
Applicant:
Inventors:

Heinz P Bohlen, Chelmsford, GB;

Edward S Sobieradski, Chelmsford, GB;

Mark Bridges, Chelmsford, GB;

Steven Bardell, Great-Dunmow, GB;

Alan H Pickering, Chelmsford, GB;

Howard T Pettas, Chelmsford, GB;

Assignee:

EEV Limited, , GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
330 45 ; 315-537 ; 315-539 ;
Abstract

A linear electron beam tube has voltages provided thereto, an electron gun, and an output resonant cavity operatively arranged together. An internal body portion, an external body portion and an insulating portion are provided. The internal body portion, external body portion, and insulating portion at least partially define an annular input resonant cavity. The internal body portion is provided with a high voltage, with respect to the external body portion, and the internal and external body portions are separated by the insulating portion so that the internal and external body portions have no electrically conductive connection therebetween. The internal body portion is in electrical contact with the electron gun. The annular input resonant cavity at least partially defined by the internal and external body portions surrounds the electron gun. The annular input resonant cavity includes two transverse walls, at least one of the transverse walls being part of the internal body portion and part of the external body portion, and a member of insulating material disposed between these body portion parts.


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