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. 31, 1978
Filed:
Feb. 25, 1977
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JA;
Abstract
A magnetron for oscillating ultrashort waves by uniformly applying a magnetic field to electrons, which comprises a cylindrical electrode assembly consisting of concentrically arranged cathode and anode electrodes; a magnetizing device formed of a pair of mutually facing permanent magnets prepared from rare earth so as to apply a magnetic field at right angles to electrons emitted from the cathode electrode to the anode electrode; and wherein the mutually facing magnetic pole surfaces of the paired permanent magnets are so depressed as to present a surface shaped in the form of a revolving ellipsis in order to apply a uniform magnetic field to electrons for control of their orbit, thereby producing from an outlet circuit oscillated electric waves which have resonated in the resonance cavity section of the anode electrode.