Dynamic pressure bearing device

Details Dynamic pressure bearing device Dynamic pressure bearing device

1997-12-09

2000-03-14

Footland, Lenard A.

Bearings

Rotary bearing

Fluid bearing

F16C 1710

Patent

active

060363681

ABSTRACT:
A dynamic pressure bearing device comprises a rotary member mounted for rotation, and a dynamic pressure bearing rotatably supporting the rotary member. The dynamic pressure bearing has a stationary portion and a disk integrally connected to the stationary portion. The disk has surface portions defining thrust dynamic pressure bearing portions for supporting the rotary member in an axial direction and a radial dynamic pressure bearing portion for supporting the rotary member in a radial direction. A gap is disposed between the dynamic pressure bearing and the rotary member for receiving oil. A space is provided in fluid communication with the gap. The space has a central portion slanted downwardly in the radial direction for preventing leakage of the oil and has a diameter increasing gradually from the central portion in the radial direction.

REFERENCES:
patent: 3420583 (1969-01-01), Hirs et al.
patent: 3484143 (1969-12-01), Tallian et al.
patent: 4445793 (1984-05-01), Shinohara
patent: 5433529 (1995-07-01), Hensel
patent: 5533811 (1996-07-01), Polch et al.
patent: 5658080 (1997-08-01), Ichiyama

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