Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-07-28
1999-09-07
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, 310254, H02K 106
Patent
active
059491698
ABSTRACT:
A plurality of magnetic poles each made of a permanent magnet is circumferentially arranged at regular intervals on the inner circumferential surface of a yoke. Bulged portions are axially formed on a wall portion of the yoke between the adjacent two magnetic poles. The bulged portions extend in a direction from the inner circumferential side of the yoke toward the outer circumferential side thereof. Each bulged portion is semicircular in section and connected with a cylindrical wall portion of the yoke through a radius. An angle between a side surface of each magnetic pole and the inner circumferential surface of each bulged portion is larger than an angle between the side surface of each magnetic pole and an inner circumferential surface of the cylindrical wall portion of the yoke. An open end of the yoke is closed with an end cover fixed to the yoke with a plurality of through-bolts by tightening. Each of the through-bolts is installed in the yoke through the inner side of each of the bulged portions of the yoke.
REFERENCES:
patent: 3594599 (1971-07-01), Godfrey
patent: 5475276 (1995-12-01), Shiga et al.
patent: 5723929 (1998-03-01), Nimi
patent: 5777393 (1998-07-01), Katoh et al.
Denso Corporation
Mullins Burton S.
Ramirez Nestor
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