Patents by Inventor Keithley M. Nathaniel

Keithley M. Nathaniel 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: 5013035
    Abstract: An exercise device includes a pair of spaced parallel base members adapted for support on a horizontal floor surface. A cross member is secured transversely between midpoints of the base members and a pair of spaced parallel vertical posts extend upwardly from central positions on the base members. A plurality of diagonal braces extend between the base members and an associated post. A plurality of pairs of attachment loops are secured at various spaced locations on the posts and on transverse cross members for attachment of extension members. The extension members may be formed from an elastomeric rubber material or by a metallic coil spring. In either case, a clip is provided on one end of each of the extension members and a hand grip is provided on an opposite end. The exercise device can be disassembled for portability and allows two individuals to perform simultaneous workouts in a minimum amount of space.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: May 7, 1991
    Inventor: Keithley M. Nathaniel