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:
Nov. 13, 1984
Filed:
Oct. 19, 1981
Applicant:
Inventor:
Masao Sakai, Mobara City, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
331 86 ; 315 3953 ; 315 3971 ;
Abstract
In a magnetron of the type wherein a gasket member in the form of a fine metal wire net is disposed between a cup shaped sealing member on the output side, and a magnetic yoke providing a magnetic flux passage for permanent magnets contained in the magnetic yoke, a portion of the yoke is provided with an annular projection for snugly receiving the gasket member and a flat edge integral with the projection is provided between the annular projection and the cup shaped sealing member for supporting the gasket member.