Bearings – Rotary bearing – Fluid bearing
Patent
1995-06-07
1997-11-11
Footland, Lenard A.
Bearings
Rotary bearing
Fluid bearing
384130, 384292, F16C 1710
Patent
active
056856474
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.
Application of Finite Element Methods to Lubrication: An Engineering Approach, Oct. 1, 1972, Booker J. F. /Huebner K.H., Journal of Lubrication Technology.
Analysis and Design of Spiral Groove Bearings, Jul. 1, 1967, Muijderman, E. A., Journal of Lubrication Technology.
The Lead Capacity & Stability haracteristics of Hydrodynamic Grooved Journal Bearings, Oct. 13, 1964, Hirs, G. G., Lubrication Conference.
Clark Wesley Ronald
Heine Guenther
Jennings David John
Khan Raquib
Leuthold Hans
Footland Lenard A.
Seagate Technology Inc.
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