Patents by Inventor Esa H. Vikman

Esa H. Vikman 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).

  • Fixation system for a permanent magnet rotor
    Patent number: 10742082
    Abstract: A fixation system that is structured to secure one or more permanent magnets to a rotor core. The fixation system may include one or more retention wedges that exert an interference or press fit against the permanent magnets to secure the permanent magnets to the rotor core. At least a portion of the retention wedges may be secured within axially extending channels in the rotor core. Additionally, the permanent magnets may be separated from each other by eddy current shields, which may also be retained in position by the retention wedges. The fixation system may also include a magnet pressure or fixation sleeve that exerts a radially inwardly directed force against the magnets and is free from direct contact with the retention wedges. According to certain embodiments, the magnet pressure or fixation sleeve may be shrink fitted onto at least a portion of the rotor core and/or the permanent magnets.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 11, 2020
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Petri J Maki-Ontto, Fredrik Boxberg, Esa H Vikman
  • Method of making a permanent magnet rotor
    Patent number: 10720808
    Abstract: A method of making a permanent magnet rotor includes interference fitting pressure tools into bores in a rotor core as to deform material of the rotor core outwardly to bias permanent magnets mounted thereon in a radially outward direction against a fixation sleeve.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: July 21, 2020
    Assignee: Ingersoll-Rand Industrial U.S., Inc.
    Inventors: Esa H. Vikman, Petri Juhani Maki-Ontto, Fredrik Andreas Boxberg
  • PERMANENT MAGNET ROTOR AND METHOD OF MAKING SAME
    Publication number: 20170149296
    Abstract: A method of making a permanent magnet rotor includes interference fitting pressure tools into bores in a rotor core as to deform material of the rotor core outwardly to bias permanent magnets mounted thereon in a radially outward direction against a fixation sleeve.
    Type: Application
    Filed: November 23, 2015
    Publication date: May 25, 2017
    Inventors: Esa H. Vikman, Petri Juhani Maki-Ontto, Fredrik Andreas Boxberg
  • FIXATION SYSTEM FOR A PERMANENT MAGNET ROTOR
    Publication number: 20160190883
    Abstract: A fixation system that is structured to secure one or more permanent magnets to a rotor core. The fixation system may include one or more retention wedges that exert an interference or press fit against the permanent magnets to secure the permanent magnets to the rotor core. At least a portion of the retention wedges may be secured within axially extending channels in the rotor core. Additionally, the permanent magnets may be separated from each other by eddy current shields, which may also be retained in position by the retention wedges. The fixation system may also include a magnet pressure or fixation sleeve that exerts a radially inwardly directed force against the magnets and is free from direct contact with the retention wedges. According to certain embodiments, the magnet pressure or fixation sleeve may be shrink fitted onto at least a portion of the rotor core and/or the permanent magnets.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 30, 2016
    Inventors: Petri J. Maki-Ontto, Fredrik Boxberg, Esa H. Vikman