Uninflammable dynamoelectric machine having coil windings and co

Details Uninflammable dynamoelectric machine having coil windings and co Uninflammable dynamoelectric machine having coil windings and co

1981-03-25

1983-06-07

Lieberman, Paul

Electrical generator or motor structure

Dynamoelectric

Rotary

428482, 428921, 523220, 524513, 524514, 524786, 524788, H02K 104, C08L 6706, C08K 714, B32B 2736

Patent

active

043873111

ABSTRACT:
In a dynamoelectric machine having a stator assembly of coil windings and a core, a heat-dissipating, uninflammable, electro-insulative housing encapsulates the coil windings and the core. The housing is made of a cured molded article or material formed of a resin-filler composition which comprises a liquid unsaturated polyester resin, a finely divided calcium carbonate powder, an inorganic mineral particulate having a particle size larger than that of the calcium carbonate powder, a chopped glass fiber and an aluminum hydroxide powder, wherein the ratio by weight of the calcium carbonate to the mineral particulate is 0.3 to 4, the ratio of the weight of glass fiber to the total weight of the composition is 0.05 to 0.25, the ratio of the weight of the polyester resin to the total weight of the composition is 0.1 to 0.4, the weight ratio of the calcium carbonate powder, the mineral particulate and the glass fiber to the total weight of the composition is 0.15 to 0.80, and the weight ratio of the aluminum hydroxide powder to the total weight of the composition is 0.1 to 0.6.

REFERENCES:
patent: 4128527 (1978-12-01), Kinjo et al.
Hackh's Chemical Dictionary, 4th Edition, Julius Grant, McGraw-Hill Book Co., New York, N.Y., 1969, p. 31.

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