Patents by Inventor Masaru SYONAI

Masaru SYONAI 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).

  • Patent number: 11493132
    Abstract: A sealing device includes a first sealing member and a second sealing member that are mounted on a housing, the outer peripheral surface of the rotational shaft being in slidable contact with the first sealing member and the second sealing member. Distal portions of multiple first hooks formed on the first sealing member are hooked on the distal portions of multiple second hooks formed on the second sealing member for restricting movement of the second sealing member away from the first sealing member in the axial direction of the sealing device. Distal portions of multiple first stoppers formed on the first sealing member are in contact with the distal portions of multiple second stoppers formed on the second sealing member for restricting movement of the second sealing member toward the first sealing member in the axial direction.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: November 8, 2022
    Assignee: NOK CORPORATION
    Inventor: Masaru Syonai
  • Patent number: 11428322
    Abstract: A sealing apparatus is provided that is capable of inhibiting a degradation in electrical conductivity performance. The sealing apparatus includes an outer seal part and an inner seal part, and conductive grease housed in a space. An outer elastic body part of the outer seal part is formed from an elastic body having electrical conductivity and includes a dust lip, a conduction lip, and a gasket part. At an annular fitting surface, the inner seal part is attached to the outer seal part. An inner elastic body part of the inner seal part is formed from an elastic body having electrical conductivity and includes a grease lip. The outer seal part has a spring that is put on an outer periphery side of the conduction lip to press the conduction lip against an inner peripheral member.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: August 30, 2022
    Inventors: Masayuki Tanida, Masaru Syonai, Takuya Ito, Kenya Yoshioka
  • Publication number: 20210102628
    Abstract: A sealing device includes a first sealing member and a second sealing member that are mounted on a housing, the outer peripheral surface of the rotational shaft being in slidable contact with the first sealing member and the second sealing member. Distal portions of multiple first hooks formed on the first sealing member are hooked on the distal portions of multiple second hooks formed on the second sealing member for restricting movement of the second sealing member away from the first sealing member in the axial direction of the sealing device. Distal portions of multiple first stoppers formed on the first sealing member are in contact with the distal portions of multiple second stoppers formed on the second sealing member for restricting movement of the second sealing member toward the first sealing member in the axial direction.
    Type: Application
    Filed: June 25, 2019
    Publication date: April 8, 2021
    Applicant: NOK CORPORATION
    Inventor: Masaru SYONAI
  • Publication number: 20210041024
    Abstract: A sealing apparatus is provided that is capable of inhibiting a degradation in electrical conductivity performance. The sealing apparatus includes an outer seal part and an inner seal part, and conductive grease housed in a space. An outer elastic body part of the outer seal part is formed from an elastic body having electrical conductivity and includes a dust lip, a conduction lip, and a gasket part. At an annular fitting surface, the inner seal part is attached to the outer seal part. An inner elastic body part of the inner seal part is formed from an elastic body having electrical conductivity and includes a grease lip. The outer seal part has a spring that is put on an outer periphery side of the conduction lip to press the conduction lip against an inner peripheral member.
    Type: Application
    Filed: June 25, 2019
    Publication date: February 11, 2021
    Applicant: NOK CORPORATION
    Inventors: Masayuki TANIDA, Masaru SYONAI, Takuya ITO, Kenya YOSHIOKA