X-ray tube construction

Details X-ray tube construction X-ray tube construction

1990-11-23

1993-02-09

Hannaher, Constantine

X-ray or gamma ray systems or devices

Source

Electron tube

378127, 378132, 378141, 378144, H01J 3510

Patent

active

051857740

ABSTRACT:
An x-ray tube construction comprising a housing and a shaft assembly mounted within the housing for rotational movement within the housing. An anode target is provided in the housing. A three-ball mounting is provided for mounting the anode target on the shaft assembly so that the anode target rotates with the shaft assembly. A cathode is disposed within the housing in the vicinity of the anode target. A voltage supply is connected to the anode target and to the cathode for accelerating electrons from the cathode to impinge upon the anode target to create x-rays. The three-ball mounting serves to minimize the transfer of heat from anode target to the shaft assembly. A motor drive is coupled to the shaft assembly for rotating the shaft assembly and the anode target carried thereby. A heat cage is disposed within the housing and surrounds the anode target. The heat cage has a window therein to permit the x-rays to pass therethrough. A vacuum envelope is mounted within a housing and serves to provide a vacuum-tight enclosure for the anode target and the cathode. The vacuum envelope includes a window in registration with the window in the heat cage to permit x-rays to pass therethrough.

REFERENCES:
patent: 4210371 (1980-06-01), Gerkema et al.
patent: 4405876 (1983-09-01), Iversen
patent: 4569070 (1986-02-01), Schubert et al.
patent: 4635283 (1987-01-01), Starek et al.
patent: 4841557 (1989-06-01), Haberreck et al.
patent: 4949368 (1990-08-01), Kubo
patent: 4949369 (1990-08-01), Bittl
patent: 4964148 (1990-10-01), Klostermann et al.
patent: 4993055 (1991-02-01), Rand et al.

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