Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-10-24
1999-01-12
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Rotary
310 54, 310216, 310 42, H02K 1502, H02K 120, H02K 132
Patent
active
058594833
ABSTRACT:
A method for fabricating a stack of motor laminations comprises forming cooling holes in each of the motor laminations and stacking the motor laminations with respective ones of the cooling holes in the laminations at least partially coincident to form a staggered cooling passage by having at least some of the cooling holes extending further into the cooling passage than others of the cooling holes. In one embodiment, the cooling holes can be perturbed cooling holes which are radially displaced from another cooling hole, azimuthally displaced from a hole axis, having an asymmetrical shape, being a different size from another cooling hole, or being shaped so that the rotation and stacking of a subsequently applied lamination results in a situation wherein adjacent cooling holes are not precisely aligned.
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Barton Richard Kenneth
Kliman Gerald Burt
Agosti Ann M.
General Electric Company
LaBalle Clayton
Snyder Marvin
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