Rigid indented cylindrical cathode for X-ray tube

Details Rigid indented cylindrical cathode for X-ray tube Rigid indented cylindrical cathode for X-ray tube

1983-06-06

1985-12-24

Smith, William F.

Electric lamp and discharge devices

Electrode and shield structures

Indirectly heated cathodes

313340, 313341, 313356, H01J 120

Patent

active

045608970

ABSTRACT:
A cathode assembly for a vacuum tube includes a wire filament, a straight bular anode parallel to and surrounding the wire filament, and insulating spacers for rigidly fastening the filament with respect to the anode, and with one side of the anode indented or flattened such that only one portion of the anode is heated to emitting temperatures by the filament.

REFERENCES:
patent: 2455287 (1948-11-01), Allen, Jr.
patent: 2558461 (1951-06-01), Rajchman
patent: 2875367 (1959-02-01), Beggs
patent: 2887607 (1959-05-01), Millis
patent: 2932759 (1960-04-01), Shepherd
patent: 3265924 (1966-08-01), Baker
patent: 3506871 (1970-04-01), Hunt
patent: 3745342 (1973-07-01), Le Poole
patent: 4065690 (1977-12-01), Maeyama
patent: 4100449 (1978-07-01), Gange
patent: 4159436 (1979-06-01), Ely

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