×

INDUCTION ROTOR ASSEMBLY AND METHOD OF MANUFACTURING SAME

  • US 20120293036A1
  • Filed: 05/20/2011
  • Published: 11/22/2012
  • Est. Priority Date: 05/20/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method of manufacturing a rotor assembly comprising:

  • placing a generally cylindrical rotor core in a die;

    wherein the rotor core has axial grooves spaced about a perimeter of the rotor core;

    casting material around the annular rotor core in the die such that the cast material forms conductor bars that fill the grooves and first end ring portions at opposing ends of the rotor core connected with the conductor bars;

    wherein each of the first end ring portions has substantially a first axial width;

    removing the rotor core with cast conductor bars and cast first end ring portions from the die; and

    welding a respective second end ring portion to each of the cast first end ring portions to form end ring assemblies;

    wherein each of the second end ring portions has a second axial width greater than the first axial width.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×