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:
Sep. 01, 1981
Filed:
Nov. 28, 1979
Applicant:
Inventors:
Tokuju Koinuma, Kawasaki, JP;
Akira Kousaka, Kawasaki, JP;
Assignee:
Toshiba Corporation, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
315 3969 ; 315 3951 ; 315 3975 ;
Abstract
A magnetron comprises an anode having an inner cylindrical wall and a plurality of copper vanes extending inwardly from the inner cylindrical wall, each vane having a notch in the top and bottom edges thereof. Each notch has an inner side edge, an outer side edge and a bottom edge. Inner and outer ring straps made of metal having a larger tensile strength than the vanes are placed in the notches. The inner ring strap is fixed to the inner side edge of alternative vanes. The inner side edge also has a slanting edge between the connection of the inner ring strap and the bottom edge to prevent cracking.