Patents by Inventor Wataru Mii

Wataru Mii 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).

  • Free piston engine and power generation system therewith
    Patent number: 6945202
    Abstract: A first piston connected to a first shaft and a second piston connected to a second shaft are supported within a housing by using a first leaf-spring unit and a second leaf-spring unit, respectively. Therefore, axial movement of the first shaft or the second shaft can be allowed, while circumferential rotational movement and radial movement can be restricted. The first leaf-spring unit includes two leaf-spring groups that are disposed in a row around the first shaft in the direction of the axis of the first shaft; similarly, the second leaf-spring unit includes two leaf-spring groups that are disposed in a row around the second shaft in the direction of the axis of the second shaft. Therefore, inclinations of the first shaft and the second shaft can be decreased. This results in reduction in contact between the first and second shafts and a cylinder within the housing and friction due to the contact.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: September 20, 2005
    Assignee: Denso Corporation
    Inventors: Takashi Kaneko, Yasumasa Hagiwara, Wataru Mii, Kazuhiro Ojika
  • Free piston engine and power generation system therewith
    Publication number: 20050109295
    Abstract: A first piston connected to a first shaft and a second piston connected to a second shaft are supported within a housing by using a first leaf-spring unit and a second leaf-spring unit, respectively. Therefore, axial movement of the first shaft or the second shaft can be allowed, while circumferential rotational movement and radial movement can be restricted. The first leaf-spring unit includes two leaf-spring groups that are disposed in a row around the first shaft in the direction of the axis of the first shaft; similarly, the second leaf-spring unit includes two leaf-spring groups that are disposed in a row around the second shaft in the direction of the axis of the second shaft. Therefore, inclinations of the first shaft and the second shaft can be decreased. This results in reduction in contact between the first and second shafts and a cylinder within the housing and friction due to the contact.
    Type: Application
    Filed: November 1, 2004
    Publication date: May 26, 2005
    Applicant: DENSO CORPORATION
    Inventors: Takashi Kaneko, Yasumasa Hagiwara, Wataru Mii, Kazuhiro Ojika