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:
Aug. 04, 1981
Filed:
Sep. 04, 1979
Applicant:
Inventor:
Tomokatsu Oguro, Mobara City, Chiba Prefecture, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315 3971 ; 315 3951 ; 315 3975 ;
Abstract
In an inner magnet type magnetron wherein a pair of permanent magnets axially magnetized are opposed to each other with an interaction space therebetween within a vacuum enclosure comprising a cylindrical anode, a repulsive magnet magnetized in a direction substantially perpendicular to the magnetization direction of the permanent magnet is arranged in the proximity of one end of the permanent magnet close to the interaction space, thereby preventing leakage flux from the permanent magnet to the inner wall of the cylindrical anode.