Patents by Inventor Thomas O. Ness

Thomas O. Ness 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: 4856759
    Abstract: A tool for grasping the stem of a woody shrub or small tree and uprooting same comprises an elongated lever arm pivotally attached at two points at its lower end to a lifting assembly having stem-gripping jaws. The lifting assembly includes a lifter arm having a fulcrum means mounted at one end and a fixed jaw face mounted at the other, and a movable jaw that slides parallel to said lifter arm, having a jaw face that opposes said fixed jaw face and moves in parallel relation to it. Dual leverage ratios are attained by the length of the lever arm, the length of the lifter arm, and the distance between said two pivot points, enabling the jaws to grip a woody stem with a force that increases at a greater rate than the lifting force as the operator pulls said lever arm to uproot said shrub or tree.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: August 15, 1989
    Inventor: Thomas O. Ness