Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1990-03-06
1992-02-04
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 51, 310187, H02K 112, H02K 2342
Patent
active
050862456
ABSTRACT:
A stator lamination allows the construction of a d.c. motor having minimum cogging torque and maximum horsepower. Each stator lamination comprises a ring of ferromagnetic material having a number of (e.g., eight) inwardly-extending integral teeth. Each tooth has a radially-inwardmost surface with side end terminations, the side end terminations of adjacent teeth being spaced from each other to define a first set of slots. A V-shaped radially-outwardly extending slot is formed in each of the radially-inwardmost surfaces between the side end terminations, to define a second set of slots (if eight teeth are provided, a total of sixteen slots are provided). The teeth have thin stems which may be wrapped with a large amount of copper wire material. The laminations are disposed in a concentric stack with each lamination skewed with respect to an adjacent lamination.
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patent: 4933584 (1990-06-01), Harms
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Persson Erland
Sieja Alan E.
LaBalle C.
S1 Montevideo Technology, Inc.
Stephan Steven L.
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