Dynamic pressure air bearing

Details Dynamic pressure air bearing Dynamic pressure air bearing

1987-09-28

1989-01-10

Levy, Stuart S.

Bearings

Rotary bearing

Fluid bearing

384115, 3849071, F16C 3206

Patent

active

047970090

ABSTRACT:
A dynamic pressure air bearing which comprises a sleeve member, with a shaft member arranged coaxially therein. Air is introduced through a clearance between the sleeve member and the shaft member by the rotation of either the sleeve member or the shaft member, and the dynamic pressure of the air acts on the inner surface of the sleeve member and the surface of the shaft member. Ceramics cover at least one of the inner surface of the sleeve member and the surface of the shaft member. The ceramics include at least one type selected from among SiN, SiCN, SiC, SiO, TiN, TiC, TiCN, BN, BC, BCN, Al.sub.2 O.sub.3, WC, and diamond.

REFERENCES:
patent: 2673131 (1954-03-01), Kistler
patent: 2980475 (1961-04-01), Wolfe
patent: 3284144 (1966-11-01), Moore et al.
patent: 3711171 (1973-01-01), Orkin et al.
patent: 4523800 (1985-06-01), Yamashita et al.
patent: 4538081 (1985-08-01), Kamiya et al.

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