Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-10-26
2009-12-15
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S064000, C310S065000, C310S216006
Reexamination Certificate
active
07633194
ABSTRACT:
A coaxial stack of laminations for a stator of an electrical machine uses laminations that are substantially identical and in direct abutment with one another. Each of the laminations has an outer periphery and an inner periphery with the outer periphery being defined by an array of outwardly projecting pins and the inner periphery being defined by an array of inwardly projecting teeth. The outwardly projecting pins cooperate with a jacket surrounding the stack to provide a cooling space through which cooling liquid flows while the teeth provide spaces therebetween for receiving for receiving stator windings. The number of pins (npin) is proportional to the number of teeth (nth) according to the relationship (2K+1)/(2Kth) times the number of teeth (nth), where K is a selected integer number and Kthis the number of teeth past which each lamination is rotated with respect to adjacent laminations so that spaces between the teeth of adjacent laminations are aligned.
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Dawsey Robert T
Doo Young
Ostrom Eric R.
Stancu Constantin C.
Desai Naishadh N
GM Global Technology Operations Inc.
Leung Quyen
LandOfFree
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