Patents by Inventor Takaaki Mamada

Takaaki Mamada 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).

  • Vehicle drive apparatus
    Patent number: 9283946
    Abstract: A vehicle drive device includes: an engine; a fluid power transmission device; a clutch disposed between an input side member and an output side member in the fluid power transmission device; and a torsional vibration reduction device disposed in a power transmission path between the engine and the fluid power transmission device in series with the fluid power transmission device, wherein when the clutch is put into slip engagement, the vehicle drive device has a minimum value set equal to or greater than zero for a differential rotation speed acquired by subtracting a rotation speed of the output side member from a rotation speed of the input side member and has a minimum value set less than zero for a differential rotation speed acquired by subtracting the rotation speed of the output side member from a rotation speed of an input side inertial body in the torsional vibration reduction device.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: March 15, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takaaki Mamada, Takuya Okada, Toshiya Yamashita
  • VEHICLE DRIVE APPARATUS
    Publication number: 20140243151
    Abstract: A vehicle drive device includes: an engine; a fluid power transmission device; a clutch disposed between an input side member and an output side member in the fluid power transmission device; and a torsional vibration reduction device disposed in a power transmission path between the engine and the fluid power transmission device in series with the fluid power transmission device, wherein when the clutch is put into slip engagement, the vehicle drive device has a minimum value set equal to or greater than zero for a differential rotation speed acquired by subtracting a rotation speed of the output side member from a rotation speed of the input side member and has a minimum value set less than zero for a differential rotation speed acquired by subtracting the rotation speed of the output side member from a rotation speed of an input side inertial body in the torsional vibration reduction device.
    Type: Application
    Filed: October 6, 2011
    Publication date: August 28, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takaaki Mamada, Takuya Okada, Toshiya Yamashita