Magnetic drive

Details Magnetic drive Magnetic drive

1975-12-03

1979-03-27

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310103, 310105, 310 86, H02K 4900

Patent

active

041468058

ABSTRACT:
The drive uses a recessed wall or partition between the pole-rings of the two rotors to substantially diminish the occurrence and strength of eddy currents. The recesses may be in the form of grooves, depressions or axial bores which reduce the mass of the wall. The wall is further reinforced by non-magnetic electrically non-conductive or insulated elements of high tensile strength to compensate for the reduction in strength caused by the grooves, depressions or bores.

REFERENCES:
patent: 613864 (1898-11-01), Moore
patent: 1543502 (1925-06-01), Hobart
patent: 1697142 (1929-01-01), Roller
patent: 2463936 (1949-03-01), Allison
patent: 2481172 (1949-09-01), Staggs
patent: 2573126 (1951-10-01), Andrus
patent: 2898485 (1959-08-01), Richter et al.
patent: 3283187 (1966-11-01), Schaefer
patent: 3366813 (1968-01-01), Madsen
patent: 3890515 (1975-06-01), Fehr et al.

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