Patents by Inventor Derek Vincent Thomson

Derek Vincent Thomson 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).

  • Surfboard leash
    Patent number: 3931656
    Abstract: A surfboard leash for attaching a surfboard to a surfer, having a tubular outer element made of a resilient material such as rubber, and a partially resilient inner reinforcement element made from a material having a limited stretching ability, such as braided nylon cord. The natural length of the inner reinforcement element is several times the natural length of the outer casing, so that when unextended it lies coiled within it, but the maximum stretched length of the inner reinforcement element is less than the maximum stretched length of the outer tubular casing so that the outer casing is protected from breakage.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: January 13, 1976
    Inventor: Derek Vincent Thomson