Disc rotor air cooled D.C. motor

Details Disc rotor air cooled D.C. motor Disc rotor air cooled D.C. motor

1997-12-16

1999-05-11

Shoop, Jr., William M.

Electricity: motive power systems

Switched reluctance motor commutation control

318480, H02K11/00

Patent

active

059031182

ABSTRACT:
A brushless direct current (DC) electric motor includes a rotor and a stator. The rotor has at least one disc mounted to a central shaft. The disc has an outer portion consisting of permanent magnets. The magnets are mounted with their direction of magnetization transversing through the disc. The stator includes C-shaped electromagnets which straddle the disc and are mounted with their magnetic poles aligned in coupling proximity to the poles of the permanent magnets in the disc. Position circuitry senses a position of the permanent magnets with respect to the electromagnets and then provides a signal based on the position to the electromagnets to cause the rotor to rotate.

REFERENCES:
patent: 3828212 (1974-08-01), Harkness et al.
patent: 4458554 (1984-07-01), Hrastar
patent: 5075606 (1991-12-01), Lipman
patent: 5179307 (1993-01-01), Porter
patent: 5633545 (1997-05-01), Albrecht et al.
patent: 5661351 (1997-08-01), Von Der Heide et al.
patent: 5691681 (1997-11-01), Okugawa

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