Self-replenishing hydrodynamic bearing

Details Self-replenishing hydrodynamic bearing Self-replenishing hydrodynamic bearing

1994-07-22

1995-04-18

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384114, 384123, F16C 3206

Patent

active

054072816

ABSTRACT:
A self-replenishing hydrodynamic bearing unit comprises a shaft and housing defining an opening for receiving the shaft for relative unidirectional rotation. A plurality of reservoirs contain a lubricating fluid. A hydrodynamic bearing region lies between the plurality of reservoirs for providing a rotational journal for relative rotation between the shaft and the housing. At least one of the shaft and the housing defines a continuous pattern of herringbone or Vee-shaped pumping grooves or passages which communicate between the plurality of reservoirs for pumping the lubricating fluid during relative rotation. The groove pumping creates a pressurized hydrodynamic bearing lubricant film at the bearing region with each groove generating localized unidirectional directional flow of lubricating liquid between the reservoirs along a predetermined axial direction of rotation, wherein some passages create axial flow in a forward direction and the others create axial flow in a reverse direction. The passages are arranged so that a total of the axial flows from all of the pumping passages is essentially zero.

REFERENCES:
patent: 3602555 (1971-08-01), Hendler
patent: 3870382 (1975-03-01), Reinhoudt
patent: 4557610 (1985-12-01), Asada et al.
patent: 4596474 (1986-06-01), Van Roemburg
patent: 4883367 (1989-11-01), Maruyama
patent: 5112141 (1992-05-01), Asada et al.
patent: 5246294 (1993-09-01), Pan

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