Hydrodynamic gas bearing

Details Hydrodynamic gas bearing Hydrodynamic gas bearing

1993-07-29

1994-12-06

Footland, Lenard A.

Bearings

Rotary bearing

Fluid bearing

384115, F16C 1710

Patent

active

053704630

ABSTRACT:
A hydrodynamic gas bearing includes a cantilevered shaft having a free end, a fixed end, and a communicating hole for communicating with a passage formed at an end surface of the free end of the shaft. A cover member is rotatably arranged around the shaft to cover a periphery of the shaft. One of an inner surface of the cover member which faces the fixed end of the shaft and an outer surface of the fixed end of the shaft having a herringbone-configured hydrodynamic pressure generating grooves for preventing gas from being fed from a fixed end side to a free end side of the shaft. One of the inner surface of the cover member which faces the free end of the shaft and an outer surface of the free end of the shaft has helical-configured hydrodynamic pressure generating grooves for feeding gas from the free end side to the fixed end side of the shaft.

REFERENCES:
patent: 5018881 (1991-05-01), Asada
patent: 5046863 (1991-09-01), Sakatani et al.
patent: 5096309 (1992-03-01), Nakasugi et al.

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