Bearings – Rotary bearing – Fluid bearing
Patent
1994-12-23
1996-06-25
Footland, Lenard A.
Bearings
Rotary bearing
Fluid bearing
F16C 1706
Patent
active
055293980
ABSTRACT:
A compliant foil hydrodynamic fluid film thrust bearing is disclosed which is comprised of a two sided thrust disk rotating element, compliant fluid foil members that axially enclose the rotating element, compliant spring foil members that axially enclose the fluid foil members, a spacer ring that coaxially surrounds the thrust disk and is axially disposed between the fluid foil members, and a compliantly mounted and spring preloaded thrust plate element and a foil retaining bearing housing with an inwardly facing thrust surface that together axially enclose the spring foil members, the fluid foil members and the spacer ring. The foils have self shimming rings at their peripheries and are formed by chemical etching from flat sheets. The fluid foils are subsequently coated with a wear resistant coating and then cold stamped to imboss compound curve profiles into the fluid foil to form wedge channels which induce vortex fluid flow patterns in the bearing's working fluid.
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Footland Lenard A.
Miller Albert J.
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