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. 27, 1981
Filed:
Mar. 02, 1979
Andras Dallos, Lincoln, MA (US);
John A Buckbee, Wellesley, MA (US);
Gordon R Spencer, Westwood, MA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A cathode current control system comprising an electron discharge device having a tubular envelope wherein an electron gun is disposed to beam a cathode current of electrons onto a spaced anode collector electrode, the gun including an electron emitting cathode, an apertured control grid electrode spaced from the cathode, and a further spaced series of beam forming electrodes; and external circuit means connected to the cathode and other electrodes of the device for maintaining the electrodes at respective predetermined electrical potentials relative to the cathode and for maintaining electron emission from the cathode sufficient for providing a predetermined level of cathode current associated with the predetermined electrical potentials of the electrodes.