Patents by Inventor Masashi OKUMA

Masashi OKUMA 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).

  • Encoder and motor
    Patent number: 11462973
    Abstract: An encoder includes: a magnet rotatably supported; a control board including a magnetic field sensor that detects a magnetic field produced by the magnet and outputs a signal, and an arithmetic unit that detects rotation of the magnet on the basis of the output of the magnetic field sensor; a magnetic shielding cover made of a soft magnetic material; an encoder bracket used to fix the magnetic shielding cover; a protective cover fixed with being sandwiched between the magnetic shielding cover and the encoder bracket to cover the magnet and the control board to prevent entry of foreign substances; and a sealing member sandwiched between the protective cover and the encoder bracket. The magnetic shielding cover covers the magnet, the control board, and the protective cover, and the sealing member is compressed between the encoder bracket and the protective cover.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: October 4, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masanori Nimura, Masashi Okuma, Daisuke Kanamori, Haruyuki Hasegawa, Takuya Noguchi, Fumiaki Tsuchiya, Toshikazu Satone
  • ENCODER AND MOTOR
    Publication number: 20210159764
    Abstract: An encoder includes: a magnet rotatably supported; a control board including a magnetic field sensor that detects a magnetic field produced by the magnet and outputs a signal, and an arithmetic unit that detects rotation of the magnet on the basis of the output of the magnetic field sensor; a magnetic shielding cover made of a soft magnetic material; an encoder bracket used to fix the magnetic shielding cover; a protective cover fixed with being sandwiched between the magnetic shielding cover and the encoder bracket to cover the magnet and the control board to prevent entry of foreign substances; and a sealing member sandwiched between the protective cover and the encoder bracket. The magnetic shielding cover covers the magnet, the control board, and the protective cover, and the sealing member is compressed between the encoder bracket and the protective cover.
    Type: Application
    Filed: April 16, 2018
    Publication date: May 27, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masanori NIMURA, Masashi OKUMA, Daisuke KANAMORI, Haruyuki HASEGAWA, Takuya NOGUCHI, Fumiaki TSUCHIYA, Toshikazu SATONE