Heater coil for electron tube

Details Heater coil for electron tube Heater coil for electron tube

1994-08-09

1995-06-20

O'Shea, Sandra L.

Electric lamp and discharge devices

Electrode and shield structures

Indirectly heated cathodes

313342, 313344, 219553, 338 62, 338298, 338299, H01J 120

Patent

active

054263514

ABSTRACT:
A heater coil for an electron tube includes a spiral wire which is double wound to be cylindrical, and a connection wire which is formed on an upper face of the spiral wire in a horizontal plane. The connection wire is shaped to have at least two bent portions on the same plane.

REFERENCES:
patent: 1918259 (1933-07-01), Gabriel
patent: 1972720 (1934-09-01), Tarpley et al.
patent: 2715671 (1955-08-01), Harrison
patent: 2909701 (1959-10-01), Okress
patent: 3259784 (1966-07-01), Vogel
patent: 4002884 (1977-01-01), Weiss
patent: 4434417 (1984-02-01), Beriger et al.
patent: 5081341 (1992-01-01), Rowe
Pages 47 to 70 of "Varian Associates Technical Memorandom TMO-59", Thermal Design of Cathodes for Klystrons, Feb. 1962.

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