Bearings – Rotary bearing – Fluid bearing
Patent
1997-10-03
1999-02-16
Footland, Lenard A.
Bearings
Rotary bearing
Fluid bearing
F16C 3206
Patent
active
058712852
ABSTRACT:
A rotary hybrid bearing that utilizes both hydrostatic and hydrodynamic principles to support a rotatable shaft in which lubricating fluid is fed through orifices or other flow restriction devices to a plurality of recesses, and finally across lands and out of the bearing. The shaft is rotated in such a direction as to pump the fluid back through grooves from lands to recesses, thereby reducing the flow rate of lubricant through the bearing. The recesses are located at an angular position from lands such that a force is generated by hydrostatic action that substantially cancels the destabilizing force generated by hydrodynamic action, thereby greatly enhancing the stability of the bearing and enabling higher rotational speeds.
REFERENCES:
patent: 2249843 (1941-07-01), Marsland
patent: 5415476 (1995-05-01), Onishi
patent: 5466071 (1995-11-01), Slocum
AESOP, Inc.
Footland Lenard A.
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