Magnetron and microwave oven and high frequency heating...

Details Magnetron and microwave oven and high frequency heating... Magnetron and microwave oven and high frequency heating...

2005-07-26

2005-07-26

Leung, Philip H. (Department: 3742)

Electric heating

Microwave heating

With specific generator

C315S039510

Reexamination Certificate

active

06921889

ABSTRACT:
A magnetron, and a microwave oven and a high frequency heating apparatus each equipped with the same use, a single permanent magnet disposed above or below an anode, a pole piece near the permanent magnet that has a magnetic flux dispersing structure, and another pole piece opposite to the permanent magnet that has a magnetic flux concentrating structure. In accordance with the present invention, even though a single permanent magnet is provided, magnetic flux density is rendered uniform across an activating space, so that the volume and parts of the magnetron are reduced and the curtailment of manufacturing costs is realized.

REFERENCES:
patent: 6774568 (2004-08-01), Yang
patent: 05-041173 (1993-02-01), None
patent: 11-283517 (1999-10-01), None
Park, Seung-Ho, Korean Patent Abstract Publication No. 1019930000576, Publication Date 19930125, Application No. 1019900014950, Application Date 19900920, Abstract only.

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