High unit load gas bearing

Details High unit load gas bearing High unit load gas bearing

1991-03-25

1992-04-21

Footland, Lenard A.

Bearings

Linear bearing

Fluid bearing

F16C 3206

Patent

active

051062046

ABSTRACT:
An externally pressurized gas bearing with high unit load capacity is described. A raised bearing surface enclosing a recess is opposite a smooth bearing surface. The clearance gap across the space between the opposing bearing surfaces is systematically varied along the flow path controlling the flow cross sectional area. The gas flow within the bearing gradually increases in velocity to a maximum of Mach one at the exit of the clearance space. Methods of varying the clearance gap include the use of contoured rigid bearing surfaces, compliant bearing surfaces with fluid support, compliant bearing surfaces with tuned elastic support, and flexible bearing surfaces. Operating pressures of several hundred pounds per square inch or more are practical. The high load capacity of these gas bearings extends the application of gas bearings into areas now dominated by liquid lubricated bearings.

REFERENCES:
patent: 4413864 (1983-11-01), Phillips
patent: 4486105 (1984-12-01), Miyake et al.
patent: 4953989 (1990-09-01), Hooykaas

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