Patents by Inventor John K. Sigler, III

John K. Sigler, III 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: 5421758
    Abstract: A scuba fin has the fin section separated from the foot pocket, and connected thereto by a shaft. The shaft has substantial height, but is of minimal thickness, so that it presents little frontal area to the water. This arrangement enables the scuba fin to pass through water with reduced resistance when swimming. Also, area and mass of the fin are minimized, while still providing an appropriate area to be subjected to water for propulsion. The angle of the fin is offset from the angle of the bottom of the foot pocket, elevating the front end of the fin, so that the likelihood of tripping is substantially reduced. The novel fin reduces effort by a scuba diver, thus enabling increased bottom time, and enables more convenient and confident walking on boat decks or on terra firma.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: June 6, 1995
    Inventors: Michael P. Watson, John K. Sigler, III