Re-entrant cathode support

Details Re-entrant cathode support Re-entrant cathode support

1983-05-25

1985-10-15

Lindsay, Robert

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For indirectly heated cathode

313157, 313256, 315 3951, A47B 5100

Patent

active

045476934

ABSTRACT:
An electron tube having a cathode and an anode with the anode subtantially surrounding the cathode and providing an electron-interaction space therebetween for providing a magnetic field having a substantial component oriented in the axial direction traversing this interaction space. The cathode structure is of reduced axial direction dimension for permitting the length of the magnetic field component to be minimized. The electron tube includes a substantial tubular cathode and a support means that is axially oriented and that is disposed adjacent to the cathode and is spaced away from the cathode substantially throughout its axial length. This support means is attached at one end to one end of the cathode and at the other end is supported at a vocation in the electron tube.

REFERENCES:
patent: 1751418 (1930-03-01), Paul
patent: 2416298 (1947-02-01), Fisk
patent: 2473547 (1949-06-01), Schmidt
patent: 2630549 (1953-03-01), Sziklai et al.
patent: 2833952 (1958-05-01), Hemphill et al.
patent: 2984725 (1976-10-01), Cook et al.

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