Patents by Inventor Kevin R Kelsey

Kevin R Kelsey 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).

  • Overlap lifting fin
    Patent number: 6019059
    Abstract: A sloped hydrofoil (22) is mounted to the bottom of a sailboard or surfboard vertical strut (26) using a hinge joint (24). Hinge joint (24) allows reversal of the slope of sloped hydrofoil (22) in response to a hull (30) side slip. Efficient sloped hydrofoil (22) supports a portion of craft weight to reduce hull (30) drag.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: February 1, 2000
    Inventor: Kevin R Kelsey