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:
Apr. 24, 2001
Filed:
Apr. 07, 1998
Applicant:
Inventors:
Assignee:
Matsushita Electronics Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 2/550 ; H01J 2/302 ;
U.S. Cl.
CPC ...
H01J 2/550 ; H01J 2/302 ;
Abstract
In a magnetron apparatus and a manufacturing method of the present invention, the magnetron apparatus comprises an anode cylinder, and a plurality of plate-form anode segments radially arranged around a central axis of the anode cylinder inside the anode cylinder. The anode segments are pressed against an inner surface of the anode cylinder by a pin press-fit into the central portion of the anode cylinder, and a far-end-side end surface each of the anode segments is secured to the inner surface. A concave is provided in the central portion of an inner end surface where the anode segments come into contact with the pin.