Magnetic bearing and motor

Details Magnetic bearing and motor Magnetic bearing and motor

1982-03-31

1983-05-03

Skudy, R.

Cutlery

F16C 3900

Patent

active

043818757

ABSTRACT:
A magnetic bearing assembly (10) has an intermediate rotatable section (33) having an outer cylindrical member (30) coaxially suspended by a torsion wire (72) around an axially polarized cylindrical magnet (32). Axial alignment between the pole faces (40-43) of the intermediate section (33) and end surfaces (50-53) of opposed end bells (20, 22) provides a path of least reluctance across intervening air gaps (60-63) for the magnetic flux emanating from magnet (32). Radial dislocation increases the reluctance and creates a radial restoring force. Substitution of radially polarized magnets 107 fixed to a magnetically permeable cylinder (32') and insertion of pairs of armature coil windings (109-112) between the cylinder pair (33') provides an integral magnetic bearing and torsion motor (100) able to provide arcuately limited rotational drive.

REFERENCES:
patent: 2153565 (1939-04-01), Isaacson
patent: 3698775 (1972-10-01), Gilbert
patent: 3865442 (1975-02-01), Studer
patent: 3888553 (1975-06-01), Wehde
patent: 4000929 (1977-01-01), Studer
patent: 4037886 (1977-07-01), Boden et al.
patent: 4040681 (1977-08-01), van der Heide
patent: 4072370 (1978-02-01), Wasson
patent: 4080012 (1978-03-01), Boden et al.
patent: 4320927 (1982-03-01), Sertich
patent: 4353602 (1982-10-01), Habermann

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