Patents by Inventor George W. Marshall

George W. Marshall 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).

  • Material handling platform for material transport vehicle
    Patent number: 5076749
    Abstract: A material handling platform is pivotally attached to the front of the material transport vehicle. Actuator means raise and lower the platform. The platform is arranged to tilt relative to the vehicle about a horizontal pivot at the front of the vehicle. A turntable is mounted on the platform. The material handling platform positions roof supports in an underground mine adjacent a long wall mining machine. The roof supports are transported by the material transport vehicle carrying the material handling platform with the longest dimension of the roof support aligned with the longitudinal axis of the vehicle. After the roof support reaches the position where it is to be installed, the roof support is turned relative to the vehicle by turning the turntable of the material handling platform so that the longest dimension of the roof support is at right angles to the longitudinal axis of the vehicle. The roof support is then removed from the vehicle by lowering and tilting the platform relative to the vehicle.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: December 31, 1991
    Assignee: Petitto Mine Equipment, Inc.
    Inventors: Angelo S. Petitto, Angelo A. Petitto, James L. Petitto, George W. Marshall
  • Material handling platform for material transport vehicle
    Patent number: 4995783
    Abstract: A material handling platform is pivotally attached to the front of the material transport vehicle. Actuator means raise and lower the platform. The platform is arranged to tilt relative to the vehicle about a horizontal pivot at the front of the vehicle. A turntable is mounted on the platform. The material handling platform positions roof supports in an underground mine adjacent a long wall mining machine. The roof supports are transported by the material transport vehicle carrying the material handling platform with the longest dimension of the roof support aligned with the longitudinal axis of the vehicle. After the roof support reaches the position where it is to be installed, the roof support is turned relative to the vehicle by turning the turntable of the material handling platform so that the longest dimension of the roof support is at right angles to the longitudinal axis of the vehicle. The roof support is then removed from the vehicle by lowering and tilting the platform relative to the vehicle.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: February 26, 1991
    Assignee: Petitto Mine Equipment, Inc.
    Inventors: Angelo S. Petitto, Angelo A. Petitto, James L. Petitto, George W. Marshall