Electric lamp and discharge devices – With getter – With contained getter
Patent
1989-04-14
1990-10-02
DeMeo, Palmer C.
Electric lamp and discharge devices
With getter
With contained getter
313481, 417 48, H01J 2994, H01J 718
Patent
active
049610406
ABSTRACT:
An evaporable getter device for mounting in an electron tube is provided which comprises a pan-shaped container having a vertical side wall formed around the perimeter of a disc shaped bottom wall and a pulverized getter metal vapor releasing material pressed into the space formed by said side wall and said bottom wall.
There is also provided a first heat transfer retarding means which delays the transfer of heat in a circumferential direction through the getter metal vapor releasing material. There is also provided a second heat transfer retarding means which delays the transfer of heat in a radial direction through the getter vapor releasing material. When the getter device is heated by currents induced from a radio frequency field created by a coil positioned outside the tube, opposite the getter device, high yields of getter metal are released in a short time without detachment of the getter material residues from the container.
REFERENCES:
patent: 3023883 (1962-03-01), Meisen
patent: 3211280 (1965-10-01), Malloy
patent: 3385420 (1968-03-01), Della Porta
patent: 3428168 (1969-02-01), Reash
patent: 3457448 (1969-07-01), Scott
patent: 3558962 (1971-01-01), Reasch
patent: 3560788 (1971-02-01), Reasch
patent: 3920355 (1975-11-01), Zucchinelli
patent: 4128782 (1978-12-01), Fransen et al.
patent: 4642516 (1987-02-01), Ward et al.
della Porta Paolo
Martelli Daniele
Trivellato Stefano
Urso Giuseppe
DeMeo Palmer C.
Murphy David R.
SAES Getters SpA
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