Patents by Inventor Zina S. Troutman

Zina S. Troutman 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).

  • Barbell having axially movable grips
    Patent number: 5152731
    Abstract: The invention is a barbell-type exercise device in which the grips are freely movable on the bar of the device. Each grip includes a number of bearings that allow the grip to slide along the bar without resistance. The grips and bar include complementary anti-rotation apparatus that prevents the grips from rotating about the longitudinal axis of the bar. A number of adjustable stop members may also be placed on the bar to limit the axial travel of the grips.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: October 6, 1992
    Inventor: Zina S. Troutman