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:
Nov. 03, 2015

Filed:

Sep. 13, 2013
Applicant:

E2v Technologies Limited, Chelmsford, Essex, GB;

Inventors:

Clive Reynolds, Chelmsford, GB;

Robert Charles Lodge, Chelmsford, GB;

Assignee:

E2V Technologies (UK) Limited, Chelmsford, Essex, GB;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 23/05 (2006.01); H01J 25/587 (2006.01); H01J 25/50 (2006.01);
U.S. Cl.
CPC ...
H01J 23/05 (2013.01); H01J 25/50 (2013.01); H01J 25/587 (2013.01);
Abstract

A magnetron cathode comprises electron emissive material included in a cathode body and a support structure for supporting the cathode body. The support structure has a longitudinal axis and includes a first part having a first cylinder integrally formed with a first end hat and a second part having a second cylinder integrally formed with a second end hat. The first cylinder and the second cylinder have an overlapping region in the longitudinal axial direction and are joined together. The cathode body is located around the first cylinder of the first part of the support structure and is joined to the first cylinder by a brazed joint. The outer surface of the first cylinder is grooved at the brazed joint.


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