Patents by Inventor Toshimitsu IIDA

Toshimitsu IIDA 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, motor, compressor, and refrigeration air conditioner
    Patent number: 11121593
    Abstract: A rotor includes a rotor core and a magnet inserted into a magnet insertion hole formed in the rotor core. The magnet insertion hole extends in parallel with the rotation axis of the rotor core and, when viewed along the rotation axis, has an arcuate shape having a central portion projecting toward the rotation axis. The arcuate shape of the magnet insertion hole is formed such that the arcuate shape includes a first arcuate surface and a second arcuate surface that has a center identical to a center of the first arcuate surface and that has a radius larger than the radius of the first arcuate surface. The second arcuate surface includes two projections projecting toward the first arcuate surface. The magnet is inserted between the two projections and makes contact with the two projections.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: September 14, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuchika Tsuchida, Toshimitsu Iida
  • ROTOR, MOTOR, COMPRESSOR, AND REFRIGERATION AIR CONDITIONER
    Publication number: 20190027982
    Abstract: A rotor includes a rotor core and a magnet inserted into a magnet insertion hole formed in the rotor core. The magnet insertion hole extends in parallel with the rotation axis of the rotor core and, when viewed along the rotation axis, has an arcuate shape having a central portion projecting toward the rotation axis. The arcuate shape of the magnet insertion hole is formed such that the arcuate shape includes a first arcuate surface and a second arcuate surface that has a center identical to a center of the first arcuate surface and that has a radius larger than the radius of the first arcuate surface. The second arcuate surface includes two projections projecting toward the first arcuate surface. The magnet is inserted between the two projections and makes contact with the two projections.
    Type: Application
    Filed: March 25, 2016
    Publication date: January 24, 2019
    Inventors: Kazuchika TSUCHIDA, Toshimitsu IIDA