Magnetic circuit for the stator of an electric motor and stator

Details Magnetic circuit for the stator of an electric motor and stator Magnetic circuit for the stator of an electric motor and stator

1990-06-15

1991-07-23

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 89, H02K 334, H02K 522

Patent

active

050346431

ABSTRACT:
The invention concerns the stator of an electric motor comprising a packet a stacked laminations provided with laterally open slots for receiving the active portions of the windings for the motor poles in which the surface of each slot carries an inner layer of a molded insulating material applied to the insulation surface of the slot, the layer in each slot being united with the layer of each one of the adjoining slots at the two outer sides of the stator by means of an insulating lateral layer so that the combiantion of the layers forms a one-piece molded layer over the slot region, thus providing good insulation of the magnetic circuit in electric motors designed to have a long service life at elevated temperatures such as those used for central heating circulation pumps.

REFERENCES:
patent: 2169097 (1939-08-01), Hall et al.
patent: 2173726 (1939-09-01), Prindle
patent: 2252440 (1941-08-01), Safford
patent: 2400576 (1946-05-01), Sigmund et al.
patent: 2701317 (1955-02-01), Herman
patent: 2761985 (1956-09-01), Schaefer
patent: 2935859 (1960-05-01), Marvin Jr.
patent: 3209992 (1965-10-01), Christiansen
patent: 3505729 (1970-04-01), Balke et al.
patent: 4862024 (1989-08-01), Stingle et al.

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