Patents by Inventor David Roy Collins

David Roy Collins 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: 6041526
    Abstract: A moulded plastics golf shoe cleat comprises a disc 14 from an upper surface of which a screw-threaded spigot (not shown) projects for attachment of the cleat to a shoe sole. A ring of barb-forming elements 16 stands on an undersurface 18 of the disc, each element comprising a convergent free-end portion forming a ground-engaging barb which terminates at an edge 24 extending tangentially of the ring. Each barb projects in a direction which makes an acute angle with the undersurface 18 of the disc 14, the barbs being resiliently deflectable to increase the angle whereby resistance to sliding of the cleat in use over penetrable ground may become increased by increased penetration of the barb into the ground. The barbs are aligned along chords to the ring, being uniformly turned out of radial alignment so as to discourage unscrewing of the cleat in use.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: March 28, 2000
    Assignee: Trisport Limited
    Inventor: David Roy Collins
  • Patent number: D392451
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: March 24, 1998
    Assignee: Trisport Limited
    Inventors: David Roy Collins, Paul Andrew Kelly
  • Patent number: D395542
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: June 30, 1998
    Assignee: Trisport Limited
    Inventor: David Roy Collins