Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-04-29
1988-11-01
Echols, P. W.
Metal working
Method of mechanical manufacture
Electrical device making
29525, 310 42, 310 87, 310 89, 310217, H02K 1514
Patent
active
047809531
ABSTRACT:
An electric motor assembly for a submersible pump has a base and an end ring which together directly, flatly engage opposite ends of a lamination stack so that the stack is thus aligned with the base and the end ring. A shell is pressed over the lamination stack and the ends of the shell are roll-formed to grippingly engage shoulders on the base and the end ring while the stack is held in compression. The shell directly engages the outer cylindrical periphery of the laminations to establish a continuous ground path and also to preclude shifting of individual laminations. The base is molded of a synthetic resinous material and directly supports a sleeve bearing, and a plurality of fluid conduits in the base enable passage of coolant to the bearing during operation of the motor. In preferred forms, the base is provided with an edge for directly engaging one end of a series of pump stagings, and the base also has a shoulder for gripping engagement with a complementally formed edge of a pump casing.
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Nielsen Darryl M.
Wheeler Charles F.
Echols P. W.
The Marley-Wylain Company
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