Patents by Inventor Frank Zane

Frank Zane 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).

  • Leg exerciser
    Patent number: 4986536
    Abstract: A leg trainer device for use in carrying out deep knee bends and standing calf exercises, which trainer may be used in conjunction with a means to enhance balance during periods of use.The device includes a main body formed from a plurality of frame members, and a pair of spaced shoulder supports which are attached to said main body. Angularly disposed weight holding members are attached to frame members of the main body.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: January 22, 1991
    Inventor: Frank Zane