X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1997-10-24
1999-02-02
Porta, David P.
X-ray or gamma ray systems or devices
Source
Electron tube
378126, H01J 3528
Patent
active
058675566
ABSTRACT:
In an X-ray tube having a housing, an outer frame for providing a vacuum, a cathode mounted in the outer frame to project a stream of electrons, and an anode disposed to receive the electron stream at a focal spot position to produce X-rays, apparatus is provided for selectively mounting the anode within the housing. More particularly, the apparatus is disposed to respond to the heat generated by the X-ray production process to provide compensation for undesirable effects resulting from thermal expansion of the anode. The apparatus generally comprises an anode frame structure disposed to support the anode for rotation about a specified axis, and further comprises an anode plate joined to the frame structure for locating the anode at an initial position, in spaced-apart relationship with the cathode and with the aperture of a collimator in fixed relation to the tube, and for displacing the anode away from the initial position, in a direction opposite to the direction of anode thermal expansion, to provide compensation therefor. A compliant plate mounting arrangement is provided for selectively attaching the anode plate to the housing.
REFERENCES:
patent: 4162420 (1979-07-01), Grady
patent: 5742662 (1998-04-01), Kuhn et al.
Block Thomas
Chrisien Dale G.
Snyder Douglas J.
Cabou Christian G.
General Electric Company
Porta David P.
Price Phyllis Y.
Skarsten James O.
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