Bearing unit

Details Bearing unit Bearing unit

1988-04-28

1989-11-28

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384107, 384112, 384133, F16C 3206

Patent

active

048833673

ABSTRACT:
In a bearing unit using a hydrodynamic lubrication film (5 or 25) of a lubrication fluid, a shaft (2 or 22) comprises plural spiral grooves (6a, 6b or 26) thereon, at least one circumference groove (7a, 7b or 27) thereon and an inner passage ((8+9+10) or (29+30)), which leads the fluid pumped by the spiral grooves (6a, 6b or 26) to the circumferential groove (7a, 7b or 27), therein, thereby to produce both functions of a kinetic pressure bearing and a static pressure bearing.

REFERENCES:
patent: 3115372 (1963-12-01), Bard
patent: 3399000 (1968-08-01), Remmers
patent: 3669517 (1972-06-01), Hughes
patent: 3964805 (1976-06-01), Schulien
patent: 4043612 (1977-08-01), Orcutt
patent: 4254961 (1981-03-01), Fersht et al.
patent: 4427310 (1984-01-01), Middleton

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