Magnetron for microwave oven

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United States of America Patent

PATENT NO 8525413
APP PUB NO 20090066252A1
SERIAL NO

12208760

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A magnetron for microwave oven has an anode cylinder, vanes (height: H (mm)), a cathode spirally extending along the central axis, a pair of end hats (outer diameter: DEH1 (mm), DEH2 (mm)) fixed to both ends of the cathode, and a pair of pole pieces. Vanes extend from an inner surface of the anode cylinder to the central axis. Free ends of the vanes form a vane inscribing circle (diameter: Da (mm)). Pole pieces expand like funnels from through-holes (inner diameter: DPP1 (mm), DPP2 (mm)) facing to the end hats and pinch the cathode. The shape of the magnetron satisfies, H≦8.5, H/Da≦0.95, DEH1/DPP1≦0.8, DEH1/DPP2≦0.8, DEH2/DPP1≦0.8, DEH2/DPP2≦0.8, 0.92≦Da/DPP1≦0.95, and 0.92≦Da/DPP2≦0.95.

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Patent Owner(s)

  • TOSHIBA HOKUTO ELECTRONICS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Higashi, Masatoshi Hokkaido, JP 6 16

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