Patents by Inventor James J. Harper

James J. Harper 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: 4607840
    Abstract: A device for mounting weight training plates at an extended distance beyond the hand of the user applies selective leverage against the user's arm. The device gains mechanical advantage and thereby increase the effective weight applied without requiring actual increase in the number or size of the weight training plates used. The device includes a frame having a handgrip and a bar for mounting weights outward of the handgrip. First and second braces are situated toward a rearward end of the frame for engaging opposite sides of the user's forearm. One brace is situated between the handgrip and remaining brace to engage the forearm on one side surface. The remaining brace is situated near a rearward end of the frame to engage the user's forearm at a point rearward of the first brace and adjacent the elbow. The braces cooperate with the handgrip to maintain position of the weights at an extended location beyond the user's hand.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: August 26, 1986
    Inventor: James J. Harper