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:
Feb. 14, 1978
Filed:
Aug. 12, 1976
Applicant:
Inventor:
Akikazu Harada, Mobara, JA;
Assignee:
Hitachi, Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315 3975 ; 315 3951 ; 315 3953 ; 315 3977 ;
Abstract
In a magnetron of the class comprising an anode cylinder, radial vanes mounted on the inner surface of the anode cylinder, and a cathode structure disposed along the axis of the anode cylinder, non-magnetic annular rings, frustums or cylinders are mounted on the pole pieces of the permanent magnets or on the inner surface of the anode cylinder to cause the end spaces on both ends of the anode cylinder to resonate at the second higher harmonic which is desired to be suppressed.