Magnetron

Details Magnetron Magnetron

2011-03-15

2011-03-15

Owens, Douglas W (Department: 2821)

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Distributed parameter resonator-type magnetron

C315S039710, C315S039770

Reexamination Certificate

active

07906912

ABSTRACT:
The magnetron includes: a cylindrical-shaped anode barrel member10having two openings respectively formed in the two end portions thereof; a cathode structure member12disposed on the center axis of the anode barrel member10; more than one anode vane11disposed radially through an action space13in the periphery of the cathode structure member12and fixedly mounted on the inner wall surface of the anode barrel member10; and, a pair of funnel-shaped pole pieces14and30respectively disposed in their associated ones of the two openings formed in the two end portions of the anode barrel member10, each pole piece including a small-diameter flat portion FL1having a penetration hole formed in the central portion thereof, a large-diameter flat portion FL2having a diameter larger than the diameter of the small-diameter flat portion FL1, and a conical-shaped slanting portion SL for connecting the large-diameter flat portion FL2and small-diameter flat portion FL1to each other. Of the pair of pole pieces14and30, the input side pole piece30includes, besides the penetration hole30A formed in the central portion thereof, three or more, preferably, four penetration holes30B respectively formed in the slanting portion SL thereof, each hole having an area of 16.6 mm2.

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