Patent ID: 6437477
Filing Date: 2002-08-20
Classification: H02K

Abstract:
A rotor for an electrical machine, comprising:a shaft; a substantially cylindrical first claw segment mounted on said shaft; a substantially cylindrical second claw segment mounted on said shaft; a substantially cylindrical third claw segment mounted on said shaft; a substantially cylindrical fourth claw segment mounted on said shaft; said first claw segment comprising a plurality of claw fingers extending axially towards said third claw segment, said third claw segment comprising a plurality of claw fingers extending axially towards said first claw segment, said second claw segment comprising a plurality of claw fingers extending axially towards said fourth claw segment and said fourth claw segment comprising a plurality of claw fingers extending axially towards said second claw segment; and a first electrical coil for generating a magnetic field in response to a current therethrough, said first electrical coil mounted on said shaft between said first and said third claw segments; a first permanent magnet proximate a peripheral portion of said substantially cylindrical first claw segment, said peripheral portion defining a first end portion of said rotor; and a second permanent magnet proximate a peripheral portion of said substantially cylindrical second claw segment, said peripheral portion defining a second end portion of said rotor, said second end portion being opposite said first end portion.