Patents by Inventor Kenneth David Allison

Kenneth David Allison 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).

  • Patent number: 6360845
    Abstract: A ladder is provided that utilizes one central rail located in the center of the step in lieu of two on the outside as found on conventional ladders. The ladder has a lower section is approximately 5 feet in length and uses square tube stock for the central rail. A leg support piece is connected and adjustable by the use of locking pins and pre-drilled pipe. The upper section is also approximately 5 feet in length and has a contact arm to hold it away from the surface it is leaning against. The upper and the lower center rail are connected to one another with the use of a locking pin.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: March 26, 2002
    Inventor: Kenneth David Allison