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US 7,608,952 B2Granted
Use of PFPE lubricant in automotive applications
AssigneeContinental Automotive Canada, Inc.
InventorsCraig Andrew Weldon, Calvin Wang
Life of this patent
Estimating the term…
Abstract
A motor (10) for a vehicle includes a stator assembly (14) and a rotor assembly (16). Bearing structure (20, 22) support the rotor assembly to permit rotation of the rotor assembly with respect to the stator assembly. A shaft (30) is threadedly engaged with the rotor assembly and is constructed and arranged such that rotation of the rotor assembly causes linear movement of the shaft. A perfluoropolyether (PFPE) based lubricant (38), having an thermal functionality upper temperature limit of over +200° C., lubricates at least the bearing structure.
Claims8
A motor for vehicle, the motor comprising:
- a stator assembly,
- a rotor assembly,
- bearing structure supporting the rotor assembly to permit rotation of the rotor assembly with respect to the stator assembly,
- a shaft, threadedly engaged with the rotor assembly and constructed and arranged such that rotation of the rotor assembly causes linear movement of the shaft, and
- a perfluoropolyether (PFPE) based lubricant, having an upper temperature limit of over 200° C. but less than or equal to about 250° C., lubricating at least the bearing structure.
2 more elements
Dependencies are inferred from the claim text.