Patents by Inventor Dan Grunfeld

Dan Grunfeld 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: 6948713
    Abstract: A flying disk target assembly used as a target in flying disk golf. The assembly includes a strut assembly attached to a vertical lower pole. The lower pole is received inside a basket sleeve centered on an open top basket. The sleeve is attached to an upper pole. The upper pole is received inside a chain and net assembly. The assembly includes an upper chain and net ring with ring sleeve is received on top of the upper pole for suspending the assembly. The upper chain and net ring is used for suspending a plurality of chains and a net. A weighted lower chain and net ring is attached to a bottom of the chains and the net. The lower chain and net ring includes a floating sleeve. When a flying disk hits the chains and/or the net, the floating sleeve acts as a shock absorber.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: September 27, 2005
    Inventor: Dan Grunfeld
  • Patent number: 6893364
    Abstract: A flat-faced interactive training soccer goal used for soccer practice. The soccer goal has a goal frame held in compression and a net and web frame held in tension for increased rebounding of a soccer ball. The flat-faced soccer goal includes a goal frame made up of a plurality of metal tube sections joined together by plurality of connector sleeves and a pair of corner elbow sleeves for forming a pair of upright posts and a horizontal crossbar. A top portion of the upright posts is joined to opposite ends of the crossbar using the corner elbow sleeves. The corner elbow sleeves are bent at an angle greater than 90 degrees and upward to 110 degrees for forming a trapezoid configuration with the crossbar being parallel to the ground surface. The upright posts are disposed outwardly and at an angle from the vertical. When the goal frame is installed, the upright posts are moved inwardly into a vertical position for forming a rectangular configuration.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: May 17, 2005
    Inventor: Dan Grunfeld