Patents by Inventor Kinjiro Tokunaga

Kinjiro Tokunaga 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).

  • Driveless vehicle with speed control
    Patent number: 4367683
    Abstract: A friction driven driverless vehicle includes a frame with support wheels adapted to ride on rails. A drive wheel on the frame is provided for frictional contact with a drive shaft parallel to the rails. A motor driven cam is provided on the frame for controlling the position of the drive wheel relative to the drive shaft. The cam is coupled to the drive wheel by a cam follower and linkage.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: January 11, 1983
    Assignee: SI Handling Systems, Inc.
    Inventor: Kinjiro Tokunaga
  • Right angle conveyor system and vehicle for use therein
    Patent number: 4359000
    Abstract: First and second tracks of a conveyor system intersect at right angles. A drive shaft is associated with each set of tracks. Driverless vehicles ride on the tracks and are provided with first and second sets of drive wheels. The sets of drive wheels are used alternatively and each set has an operative position and an inoperative position. A device is provided on the vehicle for moving the first set of drive wheels from a drive position to an accumulation position and thereafter moving the second set of wheels from an accumulation position to a drive position.
    Type: Grant
    Filed: January 21, 1981
    Date of Patent: November 16, 1982
    Assignee: SI Handling Systems, Inc.
    Inventor: Kinjiro Tokunaga