CHARLES L TOOMEY
Broker in Danvers, MA

License number
Massachusetts 88625
Issued Date
Feb 1, 1974
Expiration Date
Feb 12, 2004
Type
Broker
Address
Address
Danvers, MA 01923
LicenseFiles verified this license of Nov 25, 2016 at the Mass.gov - Consumer Affairs and Business Regulation.

Professional information

Charles Toomey Photo 1

Method Of Fabricating Cathode Electrodes

US Patent:
4424044, Jan 3, 1984
Filed:
Apr 23, 1982
Appl. No.:
6/371151
Inventors:
Lawrence C. Pitman - Sudbury MA
Charles L. Toomey - Danvers MA
Assignee:
Raytheon Company - Lexington MA
International Classification:
H01J 904
US Classification:
445 35
Abstract:
A method is disclosed to fabricate a cathode electrode for a continuous wave magnetron so that the resulting product is relatively free from random frequency modulation and frequency "pushing". The method generally comprises the steps of forming, from a slurry containing comminuted tungsten and thorium hydride, a cathode electrode of the desired shape and heat treating such cathode to remove all volatile elements and ultimately to form a cathode electrode made up of an eutectic mixture of tungsten and thorium particles of tungsten.

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