Patents by Inventor L. Douglas Nickerson

L. Douglas Nickerson 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: 4412570
    Abstract: A wood splitting apparatus is disclosed which includes a horizontal platform supporting a splitting head at one end and an hydraulic ram and pusher plate mounted at the other end. The ram is powered to drive the wood block into the splitting head which has both vertical and horizontal splitting edges. The horizontal splitting edges are set back from the vertical splitting edge to provide a progressive splitting action and the configuration of the horizontal and vertical splitting members is such as to prevent any jamming of the wood block during the splitting operation. The hydraulic ram is preferably powered by a pump driven by means of a vehicle powered roller device. The invention also includes an automatic recycling arrangement for the hydraulic pump to reverse the movement of the block pusher plate after one splitting action has taken place.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: November 1, 1983
    Inventor: L. Douglas Nickerson
  • Patent number: D271842
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: December 20, 1983
    Inventor: L. Douglas Nickerson