Method of assembling a submersible electric motor
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United States of America Patent
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-
Nov 1, 1988
Issued Date -
N/A
app pub date -
Apr 29, 1987
filing date -
Sep 19, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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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