Fluid Bearing

Details Fluid Bearing Fluid Bearing

1988-02-26

1989-04-11

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

384115, 384121, 384902, F16C 3906

Patent

active

048209503

ABSTRACT:
A dynamic pressure-type fluid bearing usable in a polygon mirror scanner for a laser beam printer includes a sleeve having an inner peripheral surface and a bottom face, and a journal having an outer peripheral surface cooperating with the inner peripheral surface of the sleeve across a predetermined clearance, and an end face cooperating with the bottom face of the sleeve. In an embodiment, the sleeve is rotatable relative to the journal and is held by a magnetic retaining force in such a manner that a predetermined gap is formed between the bottom face of the sleeve and the end face of the journal even when the bearing is at rest. The bottom face of the sleeve includes a porous body so that the gap between the bottom face and end is communicated with the outside of the bearing.

REFERENCES:
patent: 3955858 (1976-05-01), Pobeau
patent: 4443043 (1984-04-01), Yamaguchi
patent: 4523800 (1985-06-01), Yamashita
patent: 4547081 (1985-10-01), Tanaka
patent: 4696584 (1987-09-01), Tielemans
patent: 4734606 (1988-03-01), Hajec
"Newly Developed Air Bearings and Their Applications in Business Machines", Nihon Kikai Gakkai, Jul., 1986, pp. 58-63.
"Study on Externally Pressurized Porous Gas Bearings, 1. Static Performance of Externally Pressurized Porous Thrust Gas Bearings", M. Okano et al., Denshi Gijitsu Sogo Kenkyujo, vol. 38, No. 11, Nov., 1974, pp. 46-60.

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