Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-06-02
1997-08-26
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 68R, 310156, H02K 714, H02K 1100, H02K 2122
Patent
active
056613512
ABSTRACT:
A disc drive having a housing which encloses a clean room that is provided with a brushless DC drive motor having an external rotor and three pole shoes on a substantially ring-shaped stator for each two pole on the rotor. The stator winding is commutated by a three-phase commutation network in such a fashion that first, second and third networks in the stator winding are cyclically connected to an external DC source in accordance with rotor position. Each of the networks comprises at least one stator coil wrapped around a neck of a single corresponding one of the pole shoes.
REFERENCES:
patent: 3634873 (1972-01-01), Nishimura
patent: 3805134 (1974-04-01), Osamu
patent: 3840761 (1974-10-01), Mueller
patent: 3860843 (1975-01-01), Kawasaki et al.
patent: 3873897 (1975-03-01), Muller
patent: 4092572 (1978-05-01), Murata
patent: 4099104 (1978-07-01), Muller
patent: 4167692 (1979-09-01), Sekiya et al.
patent: 4417167 (1983-11-01), Ishii et al.
patent: 5381853 (1995-01-01), von der Heide
Sextant Model 4700; Nov. 1980; Rotron, Inc., Woodstock, N.Y.
Zweipulsige Kollectorlose Gleichstrom Motoren (No Month)1977; Papst Motoren KG., Germany.
Merkle Alfred
Muller Rolf
von der Heide Johann
LaBalle Clayton E.
Papst Licensing GmbH
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