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US 6,713,921 B2Granted
Permanent magnet structure for brushless motor and power assist actuator using the same
AssigneeDelphi Technologies, Inc.
InventorsTomy Sebastian, Sunil Keshava Murthy, Buyun Liu, Mark F. Fleer
Life of this patent
Estimating the term…
Abstract
A permanent magnet structure for use in brushless motors is disclosed. In an exemplary embodiment of the invention, the magnet structure includes a parallelogram shaped body. The body has an outer surface and an inner surface, with the outer surface and the inner surface being arcuate in shape.
Claims20
A permanent magnet structure for use in brushless motors, the magnet structure comprising:
- a parallelogram shaped body;
- said body having an outer surface and an inner surface;
- and
- said outer surface and said inner surface being arcuate in shape.
1 more element
A rotor assembly for a brushless motor, the rotor assembly comprising:
- a core having a central opening for insertion of a rotor shaft therein;
- and
- a plurality of rotor magnets, circumferentially mountable upon said core, each of said plurality of rotor magnets further comprising:
- a parallelogram shaped body, said body having an outer surface and an inner surface, said outer surface and said inner surface being arcuate in shape.
1 more element
A power assist actuator for an electric power steering system, the actuator comprising:
- a brushless motor coupled to a steering shaft and providing an assist torque thereon, said motor further including a rotor assembly, said rotor assembly further comprising:
- a core having a central opening for insertion of a rotor shaft therein;
- and
- a plurality of rotor magnets, circumferentially mountable upon said core, each of said plurality of rotor magnets further comprising:
- a parallelogram shaped body, said body having an outer surface and an inner surface, said outer surface and said inner surface being arcuate in shape.
2 more elements
Dependencies are inferred from the claim text.