Patents by Inventor Minoru Watatani

Minoru Watatani 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).

  • Transfer truck
    Patent number: 4389943
    Abstract: A driverless transfer truck includes a chassis having two bogies for riding on rails. Each bogie is provided with at least one drive wheel which is pressed against a drive shaft so that the force for propelling the truck is produced by the friction engagement between the drive wheel and the drive shaft. By attaching the drive wheels to the bogies, the truck can negotiate a curved section of the rails having a smaller radius than is otherwise possible.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: June 28, 1983
    Assignee: S. I. Handling Systems, Inc.
    Inventor: Minoru Watatani