Dynamic pressure bearing apparatus

Details Dynamic pressure bearing apparatus Dynamic pressure bearing apparatus

1993-07-12

1994-01-11

Footland, Lenard A.

Bearings

Rotary bearing

Fluid bearing

384112, 384245, F16C 1710

Patent

active

052774996

ABSTRACT:
In a dynamic pressure bearing apparatus for use in a rotary polygonal mirror type light deflector in a laser beam printer, a rotary head in a video tape recorder and the like, the apparatus includes a rotary shaft having a shaft end surface, a sleeve for rotatably supporting the rotary shaft through fluid, and a generator for generating dynamic pressure in a thrust direction. The sleeve has an end portion with a thrust receiver surface opposed to the shaft end surface. The dynamic pressure generator is formed on the thrust receiver surface. One of either the shaft end surface and the thrust receiver surface is convexly shaped for tolerating a non-flat surface of the shaft end surface and the thrust receiver surface.

REFERENCES:
patent: 4798476 (1989-01-01), Sakatani et al.

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