Circumferential flow type dynamic pressure bearing

Details Circumferential flow type dynamic pressure bearing Circumferential flow type dynamic pressure bearing

1998-05-19

1999-12-07

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384100, 384118, F16C 3206

Patent

active

059971800

ABSTRACT:
A circumferential flow type dynamic pressure bearing 1 is comprised of a shaft 2 having a multiple-arc-shaped pressure generating surface and a circular sleeve 3 fitted on the shaft 2. The shaft or the sleeve is formed with a plurality of proximity portions 4 each of which is close in distance to the surface opposed thereto whereby the support force of gas is generated. A plurality of grooves 5 formed at locations spaced from each other by an angle obtained by dividing the circumference by the number of proximity portions 4 or a divisor thereof. Use of such bearing ensures compatibility with high-humidity environmental conditions by provision of grooves, and at the same time it is capable of eliminating or reducing noise generated by vibration caused by radial deviations of the shaft due to provision of the grooves.

REFERENCES:
patent: 3484143 (1969-12-01), Tallian et al.
patent: 5593230 (1997-01-01), Tempest et al.
patent: 5746515 (1998-05-01), Takahashi et al.

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