Metal working – Method of mechanical manufacture – Electrical device making
Patent
1983-10-28
1985-11-19
Rosenbaum, Mark
Metal working
Method of mechanical manufacture
Electrical device making
310 43, 310266, H02K 1510
Patent
active
045533202
ABSTRACT:
A method of making a rotor, for a dynamo-electric machine, which has a number of arcuately formed rectangular loop coils arranged edgewise in a cylindrical configuration, employs injection moulding. Moulding material is injected between adjacent coils and penetrates between and around them to form an encapsulating framework. Entry of moulding material into the central apertures of the coils is prevented by inserts. By directing the moulding material inwardly, and spacing the coils slightly from the mould core, encapsulant also penetrates behind the coil faces to form a thin skin. By use of a shutter member, which may be an integral end cap, coil terminations can be led out of the mould cavity through apertures in the shutter to protect them from damage during the moulding process.
REFERENCES:
patent: 3084418 (1963-04-01), Procorio
patent: 3426223 (1969-02-01), Vaughan
patent: 3600801 (1971-08-01), Larsen et al.
patent: 4107587 (1975-09-01), Ban et al.
patent: 4398167 (1982-09-01), Dickie et al.
Bryant-Jeffries Keith C.
Dickie Hugh G.
Vaughan Eric V.
Berthold Thomas R.
Echols P. W.
International Business Machines - Corporation
Madden, Jr. Walter J.
Rosenbaum Mark
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