Electron tube

Details Electron tube Electron tube

1985-11-01

1987-07-07

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313482, H01J 2948

Patent

active

046789650

ABSTRACT:
An electron tube comprises a tubular glass envelope portion (10) having a central axis m and an inside diameter D. In the envelope portion (10) an electrode system (13) is inserted, the central axis l of which coincides with the central axis m. The electrode system (13) comprises a number of resilient elements (16) extending towards the wall of the envelope portion (10) and each pressing against a respective wall portion (19) thereof. The wall portions (19) are a distance R.sub.1 <D/2 from the central axis m. In the non-assembled condition of the electrode system, the free ends (18) of the elements (16) are a distance R.sub.2 from the central axis l, the relation R.sub.1 <R.sub.2 <D/2 being satisfied. This measure permits preventing the occurrence of damage to the wall of the envelope portion (10) when the electrode system (13) is inserted into it.

REFERENCES:
patent: 2171766 (1939-09-01), Ruska
patent: 2219111 (1940-10-01), Nicoll
patent: 2323140 (1943-06-01), Lane, Jr.
patent: 3560780 (1971-02-01), Beeli
patent: 4520291 (1985-05-01), Van Rooy et al.

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