Patents by Inventor Harutaka Mayuzumi

Harutaka Mayuzumi 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).

  • Multiple stage speed change gear device
    Patent number: 4483210
    Abstract: A multiple stage speed change gear apparatus including a control lever movable in first and second orthogonally related directions, a first mechanism for operating the shift arms of main speed change gears in response to movement of the control lever in the first direction, and a second mechanism for operating the shift arms of sub-speed change gears in response to movement of the control lever in the second direction.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: November 20, 1984
    Inventor: Harutaka Mayuzumi