Patents by Inventor Nariaki Tamura

Nariaki Tamura 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: 10663017
    Abstract: An object is to provide a compact and lightweight clutch apparatus by using a mechanical clutch. A clutch apparatus includes a one-way clutch and a mechanical clutch arranged in parallel in an axial direction, in which the mechanical clutch is movably retained in the axial direction, and when the mechanical clutch moves in the axial direction due to pushing means, the mechanical clutch engages with an end surface of an inner wheel of the one-way clutch.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: May 26, 2020
    Assignee: NSK-WARNER K.K.
    Inventor: Nariaki Tamura
  • Publication number: 20180216677
    Abstract: An object is to provide a compact and lightweight clutch apparatus by using a mechanical clutch. A clutch apparatus includes a one-way clutch and a mechanical clutch arranged in parallel in an axial direction, in which the mechanical clutch is movably retained in the axial direction, and when the mechanical clutch moves in the axial direction due to pushing means, the mechanical clutch engages with an end surface of an inner wheel of the one-way clutch.
    Type: Application
    Filed: January 5, 2018
    Publication date: August 2, 2018
    Inventor: Nariaki TAMURA
  • Patent number: 8365890
    Abstract: A one way clutch comprises an outer race including pockets having a cam surface and projecting portions disposed inwardly in a radial direction and extending toward an inner race; the inner race disposed away from the outer race in an inner diameter direction, relatively rotatably disposed concentrically with the outer race, and having an outer peripheral surface; torque transmission members arranged in the pockets to transmit a torque between the cam surface of the outer race and the outer peripheral surface of the inner race; springs for urging the torque transmission members in such a direction that the torque transmission members mesh with the cam surface of the outer race; and bearing members arranged between the outer race and the inner race and interposed between the projecting portions of the outer race and the outer peripheral surface, of the inner race.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: February 5, 2013
    Assignee: NSK-Warner K.K.
    Inventor: Nariaki Tamura
  • Publication number: 20110253497
    Abstract: A one way clutch comprises an outer race including pockets having a cam surface and projecting portions disposed inwardly in a radial direction and extending toward an inner race; the inner race disposed away from the outer race in an inner diameter direction, relatively rotatably disposed concentrically with the outer race, and having an outer peripheral surface; torque transmission members arranged in the pockets to transmit a torque between the cam surface of the outer race and the outer peripheral surface of the inner race; springs for urging the torque transmission members in such a direction that the torque transmission members mesh with the cam surface of the outer race; and bearing members arranged between the outer race and the inner race and interposed between the projecting portions of the outer race and the outer peripheral surface, of the inner race.
    Type: Application
    Filed: April 19, 2011
    Publication date: October 20, 2011
    Inventor: Nariaki TAMURA