Patents by Inventor John P. Hencmann

John P. Hencmann 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: 5308083
    Abstract: A portable soccer goal with rebounding net to return a ball struck into the net. The frame of the goal is formed by a pair of vertical posts and a long horizontal tube and is secured to the ground by a pair of base supports. Pivotable struts further support the vertical posts. The net has a sleeve that positively joins the net to the frame over the entire horizontal length of the frame, and there is a resilient mainstay cord threaded into the net near the periphery. The net and mainstay cord are secured by hooks at the base supports, and the net is oriented to the outside of the struts. When the struts are spread outwards, the tension in the net is increased so as to be sufficient to rebound a ball struck into the net.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: May 3, 1994
    Inventors: Dan Y. Grunfeld, John P. Hencmann