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.

Date of Patent:
Dec. 26, 2017

Filed:

Feb. 22, 2016
Applicant:

Toshiba Hokuto Electronics Corporation, Asahikawa-shi, Hokkaido, JP;

Inventor:

Masatoshi Higashi, Hokkaido, JP;

Assignee:

Toshiba Hokuto Electronics Corporation, Asahikawa-shi, Hokkaido, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 23/10 (2006.01); H01J 25/587 (2006.01); H01J 25/52 (2006.01); H01J 23/22 (2006.01); H01J 23/213 (2006.01); H01J 23/04 (2006.01);
U.S. Cl.
CPC ...
H01J 25/52 (2013.01); H01J 23/04 (2013.01); H01J 23/10 (2013.01); H01J 23/213 (2013.01); H01J 23/22 (2013.01); H01J 25/587 (2013.01);
Abstract

Provided is a low-cost magnetron that is excellent in productivity without any adverse effect on characteristics. Two large and small strap rings(A andB) are only disposed at lower ends, or input sides, of a plurality of vanes(A andB) in the direction of a tube axis m. Diameter Rip of a protruding flat surfaceof an input side pole pieceis larger than diameter Rop of a protruding flat surfaceof an output side pole piece. Therefore, it is possible to provide a practical magnetron without a significant decrease in productivity or characteristics from a conventional one, while cutting costs by reducing the number of parts with the use of two strap rings on one side.


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