Rotary-anode X-ray tube

Details Rotary-anode X-ray tube Rotary-anode X-ray tube

1978-11-30

1980-07-01

Schmidt, Frederick R.

Cutlery

308 78, 308172, 308DIG8, 313 60, F16C 302, F16C 1710

Patent

active

042103711

ABSTRACT:
A rotary-anode X-ray tube, comprising a rotary anode which is journalled in a vacuum-tight housing by means of at least one sleeve bearing whose mutually co-operating bearing surfaces are made of W or Mo or of an alloy of W and Mo. The bearing is lubricated by Ga or a Ga alloy having a melting point below 25.degree. C. The Ga or Ga alloy lubricant is in molecular wetting contact with the bearing surfaces so that the bearing surfaces are completely separated from each other in the loaded condition. During standstill, as well as during rotation, the lubricant is not forced out of the bearing, so that the bearing surfaces cannot become fused. The wear and the bearing noise are therefore extremely low. The desired, thorough wetting is obtained by making the bearing surfaces, as well as the Ga alloy, oxide-free before they are brought into contact with each other.

REFERENCES:
patent: 2293527 (1942-08-01), Atlee
patent: 3038731 (1962-06-01), Milleron
patent: 3602555 (1971-08-01), Hendler
patent: 4024424 (1977-05-01), Eggelsmann
patent: 4043612 (1977-08-01), Orcutt
patent: 4141603 (1979-02-01), Remmers et al.

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