Patents by Inventor Sara J. Wan

Sara J. Wan 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).

  • Electronic stroke effectiveness sensor for competitive swimmers
    Patent number: 3952352
    Abstract: A bodyworn apparatus that senses and measures the hydrodynamic thrust generated by a swimmer's hands as he strokes his hands through the water. The apparatus consists of pressure sensitive transducers that convert the amount of thrust into electric signals that are fed back to the swimmer in terms of an audio tone with tone frequency varying as a function of thrust and/or are transmitted to a recording instrument calibrated to quantitatively meter and record the thrust generated by the swimmer's arm strokes.
    Type: Grant
    Filed: May 2, 1975
    Date of Patent: April 27, 1976
    Inventors: Lawrence A. Wan, Sara J. Wan