Additives for improving motor oil properties

Electrical generator or motor structure – Dynamoelectric – Rotary

Reexamination Certificate

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Details

C508S103000, C508S113000, C508S124000

Reexamination Certificate

active

08076809

ABSTRACT:
An electric submersible motor is provided that includes a plurality of rotors and bearings mounted on a shaft, and a stator external to said rotors. A running clearance is located between an inner diameter of the stator and external diameter of the rotors, and includes a lubricating oil that includes a base hydrocarbon oil and a plurality of nanoparticles. Also provided is an improved lubricant oil and method of preparation thereof are provided. The lubricant oil includes a hydrocarbon containing base oil and a plurality of nanoparticles. The nanoparticles may be present in an amount up to 30% by volume.

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PCT International Search Report for PCT/US2010/022106 dated Aug. 23, 2010.

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