Uniform filament and method of making the same

Details Uniform filament and method of making the same Uniform filament and method of making the same

1976-04-05

1978-07-11

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Electrode and shield structures

Indirectly heated cathodes

313340, 313357, 427 77, H01J 120, H01J 1914

Patent

active

041004493

ABSTRACT:
A line electron filament is provided which is cylindrically shaped and substantially uniform in cross section about its longitudinal axis. The filament can be of the type known as directly heated or of the type known as indirectly heated. The uniformity of the filament is obtained through cataphoretic deposition in a rotating cylindrical tube. The filament is useful as a cathode in a display which employs space charge limited emission operation.

REFERENCES:
patent: 1719988 (1929-07-01), Myers
patent: 2227046 (1940-12-01), Waldschmidt
patent: 2321439 (1943-06-01), Verwey et al.
patent: 2489367 (1949-11-01), Weyer
patent: 2831140 (1958-04-01), Blickwedel et al.
patent: 3936532 (1976-02-01), Barofsky

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