Patents Assigned to Eugene R. Burkard
  • Interconnection clip for model structures
    Patent number: 5121526
    Abstract: The preferred clip is comprised of a hub with four equally spaced arms, each having at least one coin-engaging slot. Coins are retained by frictional engagement and by cooperation between the residual coin rim and ridges in the slots. Structures may be built of coins that are in orthogonal or parallel relationship. Coins of more than one size (denomination) can be retained by a single clip.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: June 16, 1992
    Assignee: Eugene R. Burkard
    Inventors: Eugene R. Burkard, Angus R. Colson, Jr.