Patents by Inventor Yasuaki Yumoto

Yasuaki Yumoto 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).

  • Construction of coupling spline sections of automatic transmission
    Patent number: 6877928
    Abstract: A construction of coupling spline sections of an automatic transmission includes: a rotary shaft section having an outer periphery formed with a spline section; a rotary hollow section having an inner periphery formed with a spline section which is coupled with the spline section of the rotary shaft section in a press fitting state; a support member; and a bearing disposed between a part of an outer periphery of the rotary hollow section and the support member. The bearing rotatably bears the rotary shaft section in such a manner as to transmit a torque between the rotary shaft section and the rotary hollow section. The spline section of the rotary shaft section and the spline section of the rotary hollow section which are disposed at least inside the bearing are coupled with each other in a loose state looser than the press fitting state.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: April 12, 2005
    Assignee: JATCO Ltd
    Inventor: Yasuaki Yumoto
  • Construction of coupling spline sections of automatic transmission
    Publication number: 20030061892
    Abstract: A construction of coupling spline sections of an automatic transmission includes: a rotary shaft section having an outer periphery formed with a spline section; a rotary hollow section having an inner periphery formed with a spline section which is coupled with the spline section of the rotary shaft section in a press fitting state; a support member; and a bearing disposed between a part of an outer periphery of the rotary hollow section and the support member. The bearing rotatably bears the rotary shaft section in such a manner as to transmit a torque between the rotary shaft section and the rotary hollow section. The spline section of the rotary shaft section and the spline section of the rotary hollow section which are disposed at least inside the bearing are coupled with each other in a loose state looser than the press fitting state.
    Type: Application
    Filed: September 23, 2002
    Publication date: April 3, 2003
    Applicant: JATCO Ltd.
    Inventor: Yasuaki Yumoto