Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1976-11-11
1979-05-29
Budd, Mark O.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 42, 310259, H02K 100
Patent
active
041568222
ABSTRACT:
A stator core lamination and a rotor core lamination for a dynamoelectric machine are formed from the same lamination blank. The stator core lamination has a series of operations performed on it, preferably during the punch press manufacture of the laminations. Those operations enable a stator core, formed from the stator laminations, to receive a rotor core, formed from the rotor laminations, without any machining steps being performed on either core in order to accomplish the reception. The stator lamination includes a yoke section having a central rotor receiving bore opening formed in it. A plurality of slots extend radially outwardly from the bore opening. That area of the lamination between adjacent slots define a plurality of stator teeth. The teeth include a root section attached to the yoke and a stem having an inboard face delimiting the bore opening. The yoke and teeth initially lie in and define a first physical plane area. The yoke and the teeth are bent at angles from and toward the first plane area so that portions of the yoke teeth lie in planes other than the first plane. Consequently, the inboard face of the teeth prescribe a bore opening having a larger diameter than the diameter when the teeth and yoke remain essentially in the same or first physical plane.
REFERENCES:
patent: 1286013 (1918-11-01), Jeannin
patent: 3202851 (1965-08-01), Zimmerle et al.
patent: 3840983 (1974-10-01), Ryff
patent: 3842300 (1974-10-01), Daykin et al.
patent: 3845340 (1974-10-01), Brooks et al.
Roddy Joseph T.
Springer Wayne C.
Budd Mark O.
Emerson Electric Co.
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