Magnetic drive device

Details Magnetic drive device Magnetic drive device

1992-02-21

1993-05-11

Crowder, Clifford D.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Electrical or magnetic coupling

310 75D, 901 25, 901 28, F16D 2700, H02K 702, B25J 1100

Patent

active

052096998

ABSTRACT:
A magnetic drive device comprises a hollow cylindrical outer rotor, an inner rotor inserted in the outer rotor so as to proejct at least at one end thereof beyond an end of the outer rotor and supported rotatably relative to the outer rotor, two magnetic bearings arranged around the outer rotor and spaced apart axially thereof for holding the outer rotor radially thereof, a first magnetic coupling having a drive portion disposed around the outer rotor for transmitting a torque to the outer rotor, and a second magnetic coupling having a drive portion disposed around the inner rotor at a portion thereof projecting beyond the end of the outer rotor for transmitting a torque to the inner rotor.

REFERENCES:
patent: 3791704 (1974-02-01), Perper
patent: 4065234 (1977-12-01), Yoshiyuki et al.
patent: 4111614 (1978-09-01), Martin et al.
patent: 4171496 (1979-10-01), Eriksson
patent: 4928561 (1990-05-01), Fouche
patent: 5046992 (1991-09-01), Tamai et al.
patent: 5064340 (1991-11-01), Genov et al.
patent: 5147175 (1992-09-01), Tada

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