Electric lamp and discharge devices – With radioactive material
Patent
1979-10-02
1982-03-30
Demeo, Palmer C.
Electric lamp and discharge devices
With radioactive material
313240, H01J 3504, H01J 3516
Patent
active
043226531
ABSTRACT:
The X-ray apparatus of the present invention comprises a metal cylindrical wall member having a longitudinal axis and opposite open ends. A pair of end members is positioned within the open ends of the wall member, at least one of the end members being an annular ceramic member having a central aperture therein and being sealed at its outer periphery to the wall member. An anode and a cathode are located within the wall member and high voltage leads are connected to the anode and cathode, at least one of these leads passing through the aperture in the ceramic member in a vacuum-tight manner to form a vacuum-tight envelope comprising the wall and end members. At least one connecting member is releasably attached to an end of the wall member adjacent the annular ceramic member thereby providing an axial releasable electrical connection with a high voltage lead. The outer face of the ceramic member is rotationally symmetrical with respect to the longitudinal axis of the wall member and forms an angle not greater than 45.degree. with a plane perpendicular to the longitudinal axis. At least one shielding electrode is disposed within the envelope to prevent impingement of charged particles on the annular ceramic member.
REFERENCES:
patent: 1684263 (1928-11-01), Coolidge
patent: 1824755 (1931-09-01), Bouwers
patent: 1936424 (1933-11-01), Coolidge
patent: 2148000 (1939-02-01), Verhoeff
patent: 4126803 (1978-11-01), Bader et al.
Bader Dietrich
Reiprich Sieghard
DeMeo Palmer C.
LICENTIA Patent-Verwaltungs-G.m.b.H.
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