Patents by Inventor Richard T. Plummer

Richard T. Plummer 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).

  • Airplane trailer
    Patent number: 7976029
    Abstract: A trailer having a frame movable between a raised position, suitable for towing of the airplane on a roadway, and a lowered position, allowing the airplane wheels to be in contact with a common surface with the trailer wheels when the trailer is under the airplane. A hitch assembly, suitable for towing the trailer in a closed position with the frame in the raised position, is coupled to the front of the frame. The open position allows the airplane to be loaded/unloaded on land from the front of the frame when the frame is in the lowered position. The airplane may be loaded/unloaded from the rear of the frame when the airplane trailer is placed in water. Also, a method of loading the airplane onto the trailer from the rear in water and unloading the airplane from the front on land.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: July 12, 2011
    Inventor: Richard T. Plummer
  • AIRPLANE TRAILER
    Publication number: 20100276897
    Abstract: A trailer having a frame movable between a raised position, suitable for towing of the airplane on a roadway, and a lowered position, allowing the airplane wheels to be in contact with a common surface with the trailer wheels when the trailer is under the airplane. A hitch assembly, suitable for towing the trailer in a closed position with the frame in the raised position, is coupled to the front of the frame. The open position allows the airplane to be loaded/unloaded on land from the front of the frame when the frame is in the lowered position. The airplane may be loaded/unloaded from the rear of the frame when the airplane trailer is placed in water. Also, a method of loading the airplane onto the trailer from the rear in water and unloading the airplane from the front on land.
    Type: Application
    Filed: April 29, 2009
    Publication date: November 4, 2010
    Inventor: Richard T. PLUMMER
  • Jack
    Patent number: D300578
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: April 4, 1989
    Assignee: Thunder Point Company
    Inventor: Richard T. Plummer
  • Soil compactor wheel
    Patent number: D305337
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: January 2, 1990
    Assignee: Thunder Point Company
    Inventor: Richard T. Plummer