Bearings – Rotary bearing – Fluid bearing
Patent
1994-07-22
1996-01-30
Footland, Lenard A.
Bearings
Rotary bearing
Fluid bearing
384123, 384130, 384381, F16C 1710
Patent
active
054876087
ABSTRACT:
The present invention includes four sections or partitions: two thrust bearings which are formed by the sides of a grooved thrust plate and corresponding countersurfaces, the thrust bearings designed to cause fluid flow in a single direction up around the rotating thrust plate and upward along the surface of a rotating journal, and two journal bearings formed side-by-side on the journal formed between a rotating shaft and a bushing with multiple spiral-grooved sections being formed on the rotating shaft or in the stationary bushing. The two journal bearings are separated by a circumferential groove in the shaft which is connected by a radial bore to a hollow reservoir in the shaft for providing fluid to the journal bearing and the thrust bearing. By providing this bore and a second bore located near to the thrust bearing, the boundary conditions for the combined journal bearings and thrust bearings are fixed and a stable rotating shaft is achieved.
REFERENCES:
patent: 5018881 (1991-05-01), Asada
patent: 5052822 (1991-10-01), Van Beek
patent: 5120139 (1992-06-01), Asada et al.
patent: 5370463 (1994-12-01), Asada et al.
Clark Wesley R.
Heine Guenther
Jennings David J.
Khan Raquib
Leuthold Hans
Footland Lenard A.
Seagate Technology Inc.
Sheridan James A.
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