Patents by Inventor Russell M. Rapant

Russell M. Rapant has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ROTOR ASSEMBLY FOR AN ELECTRIC MOTOR
    Publication number: 20230378834
    Abstract: A method of forming a molded rotor assembly for an electric motor includes providing a lamination stack, molding an insulative material to the lamination stack to form an integral fan and magnet retention coupled to the lamination stack, the lamination stack and the integral fan and magnet retention together forming a rotor body, and pressing a shaft into a central aperture formed in the rotor body to achieve an interference fit between the shaft and the lamination stack.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 23, 2023
    Inventors: Russell M. Rapant, Andrew T. Beyerl
  • Rotor assembly for an electric motor
    Patent number: 11742710
    Abstract: An electric motor includes a stator and a rotor assembly received in the stator. The rotor assembly includes a rotor body having a lamination stack, and an integral fan and magnet retention formed by molding an insulative material to the lamination stack. The rotor assembly also includes a shaft pressed into the rotor body. The shaft is pressed into the rotor body after the insulative material is molded to the lamination stack to form the integral fan and magnet retention.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: August 29, 2023
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Russell M. Rapant, Andrew T. Beyerl
  • ROTOR ASSEMBLY FOR AN ELECTRIC MOTOR
    Publication number: 20220014055
    Abstract: An electric motor includes a stator and a rotor assembly received in the stator. The rotor assembly includes a shaft, a rotor core, a rotor molding that is molded to the rotor core, and a fan. A coupler is formed on the rotor molding and a corresponding mounting hub is formed on the fan. The shaft is pressed into the rotor core after the rotor molding is molded to the rotor core, and the fan is affixed to the rotor molding by connecting the coupler and the mounting hub after the shaft is pressed into the rotor core.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 13, 2022
    Inventors: Russell M. Rapant, Brian Trump, Jeffrey C. Hessenberger
  • ROTOR ASSEMBLY FOR AN ELECTRIC MOTOR
    Publication number: 20200177041
    Abstract: An electric motor includes a stator and a rotor assembly received in the stator. The rotor assembly includes a rotor body having a lamination stack, and an integral fan and magnet retention formed by molding an insulative material to the lamination stack. The rotor assembly also includes a shaft pressed into the rotor body. The shaft is pressed into the rotor body after the insulative material is molded to the lamination stack to form the integral fan and magnet retention.
    Type: Application
    Filed: November 27, 2019
    Publication date: June 4, 2020
    Inventors: Russell M. Rapant, Andrew T. Beyerl
  • STEPPED STATOR FOR AN ELECTRIC MOTOR
    Publication number: 20190238022
    Abstract: An electric motor includes a stator including an annular stator core and an end cap coupled to an axial end of the stator core. The stator core and the end cap together define a body portion and a plurality of teeth projecting inwardly from the body portion. Each tooth includes a tooth crown portion at a radially distal end and a tooth body portion extending between the body portion and the crown portion. Steps are formed on at least one tooth body portion at the axial end of the stator core.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 1, 2019
    Inventors: Russell M. Rapant, Brian Trump, Jeffrey C. Hessenberger