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:
Jan. 05, 2021
Filed:
May. 11, 2011
Applicant:
David Bernard Fox, Chelmsford, GB;
Inventor:
David Bernard Fox, Chelmsford, GB;
Assignee:
TELEDYNE UK LIMITED, Chelmsford, GB;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 23/12 (2006.01); H01J 25/587 (2006.01);
U.S. Cl.
CPC ...
H01J 23/12 (2013.01); H01J 25/587 (2013.01);
Abstract
A high power electron tube, such as a magnetron, has the disadvantage that, to reduce the chances of the ceramic RF window failing in use, the manufacturing step entails a prolonged ageing period of powering the magnetron at low power on test, in order to drive any absorbed gases out of the RF window. According to the invention, the RF windowis internally glazed (), which makes it possible to avoid the ageing period.