Patents by Inventor Takeshi Iio

Takeshi Iio 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).

  • Thrust bearing holding structure for outboard motors
    Patent number: 4767225
    Abstract: An improved thrust bearing arrangement for locating the drive shaft of a marine drive. In accordance with the invention, the thrust bearing is fixedly supported between the lower unit and a supporting housing and the location of the drive shaft is controlled by a shim that is positioned between a flange on the drive shaft and the inner race of the thrust bearing.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: August 30, 1988
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Takeshi Iio
  • Shift mechanism for marine propelling unit
    Patent number: 4579204
    Abstract: An improved shifting mechanism for the outboard drive unit of a marine propulsion device. The unit includes a torsion bar actuator that resiliently deflects until a detent on the shifting sleeve is released. Upon release of the detent, the torsional loading on the torsion bar is released so as to slap the clutch elements into engagement.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: April 1, 1986
    Assignees: Yamaha Hatsudoki Kabushiki Kaisha, Sanshin Kogyo Kabushiki Kaisha
    Inventor: Takeshi Iio
  • Propeller
    Patent number: 4545771
    Abstract: A propeller and exhaust system for an outboard motor wherein performance is improved by permitting the flow of some exhaust gases in proximity to the propeller blades at low speeds so as to aerate this area and so as to preclude the aeration when the speed of the propeller exceeds a predetermined speed for improving thrust.
    Type: Grant
    Filed: July 14, 1983
    Date of Patent: October 8, 1985
    Assignee: Sanshin Kogyo Kabushiki Kaisha
    Inventor: Takeshi Iio