Rotary device

Details Rotary device Rotary device

1987-11-23

1990-09-18

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310 905, 310179, 310268, 310DIG6, 384123, H02K 2112

Patent

active

049580981

ABSTRACT:
A rotary device is disclosed for use as a precision element such as an optical scanner. The device comprises a rotor which includes a driven element such as a polygon having a plurality of mirror surfaces thereon, an arrangement for supporting the rotor for rotational movement, and a drive motor for the rotor. The rotor supporting arrangement includes a thrust bearing. In order to provide a rotary device having a low profile and a minimum of parts, a planar motor is used as the drive motor, and the permanent magnet of the motor is incorporated in the rotor. The thrust bearing includes an arrangement for directing an axial force against a radial surface of the rotor when the motor is actuated.

REFERENCES:
patent: 3891282 (1975-06-01), Tuffias
patent: 4128280 (1978-12-01), Purtschert
patent: 4332428 (1982-06-01), Maruyama
patent: 4366405 (1982-12-01), Schmider
patent: 4413895 (1983-11-01), Lee
patent: 4512626 (1985-04-01), Kamiya
patent: 4558909 (1985-12-01), Stauber
patent: 4658162 (1987-04-01), Koyama
patent: 4726640 (1988-02-01), Iwama
patent: 4805972 (1989-02-01), Tanaka
patent: 4820949 (1989-04-01), Mizobuchi

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