Electric lamp and discharge devices – Cathode ray tube – Envelope
Patent
1978-03-31
1980-01-08
Segal, Robert
Electric lamp and discharge devices
Cathode ray tube
Envelope
313482, H01J 2984, H01J 3100
Patent
active
041829743
ABSTRACT:
Disclosed is a picture display tube comprising an envelope having a display window, a cone and a neck. An electrode system to generate at least one electron beam is mounted in the neck and an electrical resistive layer extends over an internal wall portion of the envelope to a point near the electrode system. The tube comprises a getter which is detachably secured to a connecting member projecting internally from the wall of the tube at a location remote from the electrode system by means of a resilient connection strip. The portion of the connection member projecting from the tube wall has a gradually widening end having a largest transverse dimension D and a smallest transverse dimension d and the connection strip of the getter has a first aperture whose dimensions are larger than the dimension D. The first aperture debouches via a passage of width b into a second aperture of dimensions A in a manner such that D>A>b>d, so that the gradually widening end of the connecting member in cooperation with the said second aperture forms a detachable coupling.
REFERENCES:
patent: 2922063 (1960-01-01), Haas
Segal Robert
Tamoshunas Algy
U.S. Philips Corporation
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