Winding slot closure for rotary electric machines

Details Winding slot closure for rotary electric machines Winding slot closure for rotary electric machines

1974-10-30

1976-08-24

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310215, H02K 348

Patent

active

039769011

ABSTRACT:
A rotary electrical machine is provided with a laminated stack of iron sheets in which slots are formed and winding conductors inserted therein, the entrances to the slots then being closed by insertion of slot keys along the slots. In order to maintain the winding conductors in each slot under compression and to apply a pressure against the slot keys, a row of ring-shaped disk springs in the form of a truncated cone and made from a glass fiber-reinforced synthetic resin is inserted in the slot between the slot key and the winding conductors prior to installation of the slot key. The diameter D of the truncated conical springs is made equal to the width of the slot and the central opening therein has a maximum diameter of 0.3 D.

REFERENCES:
patent: 1555065 (1925-09-01), Lindquist
patent: 2922058 (1960-01-01), Bacon
patent: 3119033 (1964-01-01), Horsley
patent: 3243622 (1966-03-01), Whittlessey
patent: 3594597 (1971-07-01), Kildishev
patent: 3780325 (1973-12-01), Frankenhauser

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