Metal working – Method of mechanical manufacture – Electrical device making
Patent
1975-07-14
1976-04-27
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
29421R, 310 42, 310 43, 310214, H02K 1514
Patent
active
039524060
ABSTRACT:
A turbo-generator with a rotor winding includes a plurality of slots in which the rotor windings are inserted and a plurality of slot wedges, at least two slot wedges lying in each slot on the outside of the winding and being electrically connected with each other. A plurality of relatively thin pressure tubes of a deformable material such as copper are positioned in the slots between the wedges and the windings. Thereafter, the pressure tubes are supplied with a thermosetting resin through feed tubes, the resin being supplied at a sufficient pressure and in a sufficient amount to produce an expansion of the space within the tube by at least 50 per cent. The feed tube is then subjected to heat in a localized area, thus accelerating the curing of the resin in this area of the tube and forming a plug, after which the supply of pressure to the pressure tube is disconnected. After the resin in the pressure tube has hardened, the feed tube is removed.
Allmanna Svenska Elektriska Aktiebolaget
Hall Carl E.
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