Bearing assembly and rotating anode X-ray tube device employing

Details Bearing assembly and rotating anode X-ray tube device employing Bearing assembly and rotating anode X-ray tube device employing

1989-05-08

1990-08-14

Howell, Janice A.

X-ray or gamma ray systems or devices

Source

Electron tube

378133, 384507, 384508, H01J 3510

Patent

active

049493680

ABSTRACT:
A rotating anode type X-ray tube device comprises a bearing assembly for supporting a rotating member. The bearing assembly includes a first member having a cylindrical configuration, and a second member having at least a portion concentrically disposed in said first member and at least one separation-type ball bearing is interposed between the first and the second member for supporting a relative rotating motion therebetween. The separation-type ball bearing has an inner race and an outer race with one of the inner and the outer race being open at an axial end thereof. A through-hole serves as a ball-introduction passageway when assembling the separation-type ball bearing from a position near the open end of the one race to a radially outer surface of the first member. According to the above construction, even when an interfering member is mounted on the first or second member, balls of the separation-type ball bearing can be placed through the through-hole with no obstacle after completely assembling the rotating member. It is unnecessary to disassemble the rotating member when removing it from the X-ray tube device. It is also unnecessary to disassemble the rotating member when correcting the unbalanced state of the rotating member.

REFERENCES:
patent: 2216888 (1940-10-01), Machlett
patent: 2813210 (1957-11-01), Zunick et al.
patent: 3634870 (1972-01-01), Kessler
patent: 3635283 (1987-01-01), Starek et al.
patent: 3720853 (1973-03-01), Atlee et al.
patent: 4097759 (1978-06-01), Furbee et al.
patent: 4272696 (1981-06-01), Stroble et al.
patent: 4393511 (1983-07-01), Jens

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