Electric lamp and discharge devices – Cyclotrons
Patent
1979-01-08
1981-07-28
Segal, Robert
Electric lamp and discharge devices
Cyclotrons
H01J 3504
Patent
active
042812682
ABSTRACT:
An X-ray tube comprising an evacuated envelope, a cathode unit disposed in the evacuated envelope and an anode unit disposed in the evacuated envelope to face the cathode unit. The envelope consists of end portions made of glass and an intermediate portion made of metal. The anode unit has a target attached to a rotor. The X-ray tube further comprises a heat-insulating member provided between the target and the rotor for preventing the rotor from being heated by heat radiating from the target. The heat-insulating member constitutes a part of the evacuated envelope.
REFERENCES:
patent: 2345723 (1944-04-01), Atlee et al.
patent: 2679608 (1954-05-01), Cordingly
patent: 2885582 (1959-05-01), Bell
patent: 3500097 (1970-03-01), Perry et al.
patent: 3882339 (1975-05-01), Rate et al.
patent: 3916202 (1975-10-01), Heiting et al.
Ishii Yashunori
Sawa Tsuna
Segal Robert
Tokyo Shibaura Denki Kabushiki Kaisha
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