Patents by Inventor Ryutaro ISHIDA

Ryutaro ISHIDA 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).

  • Motor shaft, rotor, motor and blower
    Patent number: 11437875
    Abstract: A cylindrically-shaped motor shaft forming a rotational axis of a motor includes a processing target region, a spiral groove, and a reverse spiral groove intersecting with the spiral groove at at least one point. The processing target region has a first end closer to a bottom face of the cylindrical shape and second end closer to a top face side of the cylindrical shape. At least one turn of the spiral groove surrounds an outer circumferential surface in the processing target region. The reverse spiral groove surrounds the outer circumferential surface in the processing target region in a direction reverse to that of the spiral groove.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: September 6, 2022
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Motohiro Morishita, Satoru Murao, Munetada Satou, Ryutaro Ishida
  • MOTOR SHAFT, ROTOR, MOTOR AND BLOWER
    Publication number: 20210111600
    Abstract: A cylindrically-shaped motor shaft forming a rotational axis of a motor includes a processing target region, a spiral groove, and a reverse spiral groove intersecting with the spiral groove at at least one point. The processing target region has a first end closer to a bottom face of the cylindrical shape and second end closer to a top face side of the cylindrical shape. At least one turn of the spiral groove surrounds an outer circumferential surface in the processing target region. The reverse spiral groove surrounds the outer circumferential surface in the processing target region in a direction reverse to that of the spiral groove.
    Type: Application
    Filed: March 27, 2019
    Publication date: April 15, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Motohiro MORISHITA, Satoru MURAO, Munetada SATOU, Ryutaro ISHIDA