X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1998-01-21
1999-11-02
Porta, David P.
X-ray or gamma ray systems or devices
Source
Electron tube
378144, H01J 3510
Patent
active
059784482
ABSTRACT:
In an X-ray tube provided with a frame, a rotary bearing, and a target and anode supported by the rotary bearing for rotation with respect to the frame, an improved arrangement is provided for preloading the rotary bearing. The arrangement comprises a housing fixably joined to the frame, the housing provided with a cylindrical inner wall and disposed to receive the rotary bearing, and a spring or the like for applying an axial force to the bearing race, to selectively preload the bearing balls or other rotary elements of the bearing. The arrangement further comprises a linear bearing positioned between the bearing race and the cylindrical inner wall, to enable the bearing race to move axially with respect to the housing in response to the applied axial force. The linear bearing comprises a selected number of linear bearing rows in closely spaced relationship with one another, each of the linear bearing rows comprising a number of linear bearing balls positioned in a circular array around the rotary bearing race.
REFERENCES:
patent: 4878235 (1989-10-01), Anderson
patent: 5185774 (1993-02-01), Klostermann
patent: 5241577 (1993-08-01), Burke et al.
Cabou Christian G.
Dunn Drew A.
General Electric Company
Porta David P.
Price Phyllis Y.
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