Bearing device

Electrical generator or motor structure – Dynamoelectric – Rotary

Patent

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Details

384107, H02K 709

Patent

active

052890678

ABSTRACT:
A bearing device comprising a fixed shaft having a first radial bearing surface, a sleeve provided in a fitting relationship with the fixed shaft and having a second radial bearing surface opposed to the first radial bearing surface, the second radial bearing surface having herring-bone grooves thereon to form a radial gas bearing to support the sleeve with respect to the fixed shaft, and the fixed shaft having one end portion forming part of a magnetic thrust bearing of aspirating type to support the sleeve with respect to the fixed shaft.

REFERENCES:
patent: 4443043 (1984-04-01), Yamaguchi
patent: 4512626 (1985-08-01), Kamiya et al.
patent: 4523800 (1985-06-01), Yamashita et al.
patent: 4717223 (1988-01-01), Ishida et al.
patent: 4805972 (1989-02-01), Tanaka et al.
patent: 5046863 (1991-09-01), Sakatani et al.
patent: 5114245 (1992-05-01), Tanaka et al.

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