Patents by Inventor Leonard J. Lukehart

Leonard J. Lukehart 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).

  • Trolling drive means for boats
    Patent number: 4424041
    Abstract: A boat is disclosed having a conventional inboard motor operatively connected to a primary propeller on the exterior of the boat. A hydraulic motor is operatively connected to the boat in the proximity of the primary propeller. A hydraulic circuit including a hydraulic pump is operated by the inboard motor and is connected to the hydraulic motor for actuating the hydraulic motor. An electrically operated solenoid valve is imposed in the hydraulic circuit to selectively by-pass hydraulic fluid in the hydraulic circuit away from the hydraulic motor. The hydraulic motor is pivotally connected to the boat so that when in a first position, it will drive the boat forwardly, and when in a second position, it will drive the boat rearwardly. Conventional controls are provided to withdraw power from the primary propeller when the hydraulic motor is in operation.
    Type: Grant
    Filed: August 26, 1981
    Date of Patent: January 3, 1984
    Inventors: Vernon H. Sietmann, Leonard J. Lukehart, Dale E. Locker
  • Water recreational vehicle
    Patent number: 4367689
    Abstract: The water recreational vehicle of the present invention consists of a rigid housing mounted on a floatatable tube. The vehicle is powered by two hand operated battery powered motors with propellers. The vehicle is designed to have increased ballast and maneuverability.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: January 11, 1983
    Inventors: Leonard J. Lukehart, Vernon H. Sietmann