Patents by Inventor Colin Spencer Shinkfield

Colin Spencer Shinkfield 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).

  • Mast step
    Patent number: 6655314
    Abstract: A mast step for a kayak sailing rig is provided. The mast step supports a mast relative to a deck of the kayak at a desired angle to facilitate an optimum sail shape. The step also has a convex below a surface which contacts the deck, allowing the mast to be rotated forward or aft in use, and in particular allowing the mast to be rotated from an upright position to a flat position against the deck of the kayak.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: December 2, 2003
    Assignee: On Top Down Under Ltd.
    Inventors: Gary David Housely, Andrew Boyle, Colin Spencer Shinkfield, James Barker
  • Mast step
    Publication number: 20020170482
    Abstract: A mast step for a kayak sailing rig is provided. The mast step supports a mast relative to a deck of the kayak at a desired angle to facilitate an optimum sail shape. The step also has a convex below a surface which contacts the deck, allowing the mast to be rotated forward or aft in use, and in particular allowing the mast to be rotated from an upright position to a flat position against the deck of the kayak.
    Type: Application
    Filed: May 7, 2002
    Publication date: November 21, 2002
    Inventors: Gary David Housely, Andrew Boyle, Colin Spencer Shinkfield, James Barker