Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-06-02
1998-04-14
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310201, 310216, 310217, 310258, 310259, 310270, H02K 304, H02K 316, H02K 334
Patent
active
057396175
ABSTRACT:
An upper coil bar and lower coil bar are disposed in slots of an armature core. The upper coil bars have upper coil-end sections which extend radially from the outer periphery of the armature core and together from a commutator surface with which a brush member is in contact. The upper coil-end sections and coil-end sections of the lower coil bars are retained by a fixing cap fixed between a shaft of the rotary electric machine and the upper coil-end sections, and also by a spacer disposed between the upper coil-end sections and the lower coil-end sections so that the commutator surface can be maintained smooth even under conditions of thermal expansion or high-speed operation.
REFERENCES:
patent: 1028985 (1912-06-01), Behrend
patent: 1224518 (1917-05-01), Apple
patent: 3521101 (1970-07-01), Arora
patent: 3988625 (1976-10-01), Jager et al.
patent: 4126799 (1978-11-01), Iogansen et al.
patent: 4808873 (1989-02-01), Rowe et al.
patent: 5130596 (1992-07-01), Umeki
patent: 5485050 (1996-01-01), Zimmerman et al.
patent: 5508577 (1996-04-01), Shiga et al.
Katoh Masahiro
Niimi Masami
Shiga Tsutomu
Nippondenso Co. Ltd.
Stephan Steven L.
Tamai Karl Eizo
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