Directly heated type cathode assembly

Details Directly heated type cathode assembly Directly heated type cathode assembly

1979-10-16

1981-11-03

Chatmon, Jr., Saxfield

Electric lamp and discharge devices

Discharging devices with apertured electrode interposed...

Plural cathodes

313270, 313337, 313409, 313417, H01J 146, H01J 2110

Patent

active

042988144

ABSTRACT:
A directly heated type cathode assembly comprises a ribbon filament to a substantially central portion of which an electron-emitting substance is attached through a metal plate, a first support member on which one end portion of the ribbon filament is fixed to support the ribbon filament, the first support member being electroconductive, a second support member for supporting that portion of the ribbon filament which is a little short of the other end of the ribbon filament, a conductive spring member fixed to the other end portion of the ribbon filament, and a conductive cathode cylinder supporting the first support member, second support member and spring member and having a base at the filament side, the base of the cylinder having at least one opening.

REFERENCES:
patent: 3092748 (1963-06-01), Dickson, Jr. et al.
patent: 3333136 (1967-07-01), Coleman et al.
patent: 3389290 (1968-06-01), Yoshida et al.
patent: 3441767 (1969-04-01), Kerstetter
patent: 3444416 (1969-05-01), Yoshida et al.
patent: 3465195 (1969-09-01), Fuchs
patent: 3541382 (1970-11-01), Takanashi et al.
patent: 3633062 (1972-01-01), Tamura
patent: 3681643 (1972-08-01), Blatter
patent: 3878424 (1975-04-01), Suganuma

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