Pumps – Motor driven – Electric or magnetic motor
Patent
1997-11-05
1999-11-23
Freay, Charles G.
Pumps
Motor driven
Electric or magnetic motor
361221, 310239, F04B 3504, H05F 300
Patent
active
059889969
ABSTRACT:
An electrical motor for a submersible well pump assembly has a brush for preventing arcing across the bearings. The motor has a housing and a stator stationarily mounted in the housing. A shaft extends through a cavity in the stator, the shaft carrying a rotor. Bearings are located at the base and head of the pump for stabilizing the shaft in the housing. A brush is stationarily carried by the housing in electrical common with the stator in the housing. The brush is also in sliding engagement with the shaft. The brush is located near one of the ends of the housing to reduce arcing across the bearing because of voltage differential between the shaft and the stator.
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Brookbank Earl Bruce
Parmeter Larry J.
Baker Hughes Incorporated
Bradley James E.
Evora Robert Z.
Freay Charles G.
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