Patents Assigned to AC Propulsion, Incorporated
  • Patent number: 5729885
    Abstract: A method of fabricating rotors for induction motors. In a first aspect, arcuately spaced apart rotor bars pass through channels the magnetic core of the motor. The rotors are formed of an elongate portion having a constant cross section parallel to the magnetic core laminations and include two portions protruding beyond the end laminations at opposite ends of the magnetic core. The protruding portions are, at one end, a head much like the head of a "T", and at the other end, a straight continuation of the elongate portion. The rotor bars are formed to fit closely with one another in an interleaving arrangement. The protruding portions form an end ring assembly which is subjected to a consolidation process. In this way, for a rotor having N rotor bars, there will only be N braze joints in each end ring.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: March 24, 1998
    Assignee: AC Propulsion, Incorporated
    Inventors: Paul F. Carosa, Alan G. Cocconi