Patents by Inventor Leo Stahl

Leo Stahl 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).

  • Drive for vehicles
    Patent number: 4715459
    Abstract: A vehicle has articulated tracks on each side driven separately by hydraulic gears comprising a hydraulic group coupled to the drive shaft and hydraulic motors driving the tracks. The hydraulic pump group has at least three hydraulic pumps coupled to each other in series. The hydraulic motors are actuated by the first two hydraulic pumps. The third pump is adapted to actuate auxiliary equipment and is serially engagable and disengagable from the first two pumps.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: December 29, 1987
    Assignee: Leo Stahl AG
    Inventor: Leo Stahl