Patents by Inventor Eberhard Plotz

Eberhard Plotz 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).

  • Dumbbell
    Patent number: 4453710
    Abstract: An exercise dumbbell having wheel weights on each end thereof that are each detachably attached to a grip bar by locking tabs on the grip bar and complementary stops on each wheel weight. The weights are engageable with each other on the grip bar and are locked thereon by rotating each weight relative to the grip bar thereby interlocking the complementary stops with the locking tabs.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: June 12, 1984
    Inventor: Eberhard Plotz