H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/106, 400/513
H02K 3/30 (2006.01) H02K 5/08 (2006.01)
Patent
CA 1099774
UNINFLAMMABLE DYNAMOELECTRIC MACHINE HAVING COIL WINDINGS AND CORE ENCAPSULATED WITH UNSATURATED POLYESTER RESIN-FILLER COMPOSITION Abstract of the Disclosure In a dynamoelectric machine having a stator assembly of coil windings and a core, a heat-dissipating, unin- flammable, 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 poly- ester 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 carbonte to the mineral particulate is 0.3 to 4, the ratio of the weight of glass fiber to the total weight of the compo- sition 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 0.2 to 0.6, and the weight ratio of the aluminum hydroxide powder to the total weight of the composition is 0.2 to 0.6.
310849
Hironaka Kenichi
Ishikawa Tetsuo
Kobayashi Tsuguo
Ogata Masatsugu
Umetsu Hideo
Hitachi Ltd.
Kirby Eades Gale Baker
LandOfFree
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