Rotary electric machine

Details Rotary electric machine Rotary electric machine

1998-05-26

1999-11-30

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310201, 310206, 310208, 310210, 310179, 310184, 310198, 310216, 310270, 29596, 29605, 29825, H02K 100

Patent

active

059948132

ABSTRACT:
A stator winding has a plurality of conductor members forming coil ends, and each of the conductor members of the coil ends is hardened and heat treated to have hardness which changes along the length of conductor members. Therefore, the stiffness of the coil ends changes and resonant vibration of the stator can be reduced.

REFERENCES:
patent: 1822261 (1931-09-01), Apple
patent: 2928963 (1960-03-01), Bertsche et al.
patent: 3431639 (1969-03-01), Reimer
patent: 4755698 (1988-07-01), Frister et al.
patent: 4870307 (1989-09-01), Kitamura et al.
patent: 5093591 (1992-03-01), Kitamura et al.
patent: 5097167 (1992-03-01), Kanayama et al.
patent: 5691590 (1997-11-01), Kawai et al.
patent: 5742498 (1998-04-01), Taniguchi et al.
patent: 5778512 (1998-07-01), Ichikawa et al.
Patent Abstracts of Japan, vol. 015, No. 118 (E-1048), Mar. 22, 1991 & JP 03 007036 A (Hitachi Ltd), Jan 14, 1991.

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