Patents by Inventor Dennis E. Cone

Dennis E. Cone 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: 5151072
    Abstract: A free weight lifting apparatus adapted for to return of a Free Weight Barbell (6) to a stationary barbell support rack (3), without other ancillary assistance, for a lone exerciser participating in a variety of free weight lifting exercises, including negative lift exercises. A reciprocating frame assembly (2) adapted for the upward and rearward travel of a Free Weight Barbell (6) in the direction of the stationary barbell support rack (3). The reciprocal frame assembly is comprised of a pair of horizontal arms (4) with an electrical switch (11) secured to each arm and a sleeve (5) pivoted over each switch (11). The reciprocal frame (2) reciprocates in or about a fixed vertical frame (1). The frame (2) is raised and lowered by an hydraulic cylinder (8) which is powered by an electrically driven pump (24).
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: September 29, 1992
    Inventors: Dennis E. Cone, James H. Gibson