Patents by Inventor David J. Hergenroeder

David J. Hergenroeder 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: 5205071
    Abstract: A sandal particularly well suited for surfing has an instep pad adapted to extend across the instep at the top of the foot and a traction surface adapted to extend across the bottom of the foot between the heel and the ball of the foot. An ankle strap holds the pad and sole rearward while a toe strap holds the pad and sole forward. A cross strap over the foot near the leg prevents the ankle strap from falling down around the heel. A traction surface is applied to the sole and a second traction surface is applied to the toe strap below the base of the toe. The sandal is constructed of neoprene for warmth and flexibility and the traction pads are preferably formed from a rubber. Loop and pile fasteners allow the straps to be adjusted.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: April 27, 1993
    Inventor: David J. Hergenroeder