Patents by Inventor William S. Crenshaw

William S. Crenshaw 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: 4254730
    Abstract: An anchor apparatus to anchor houseboats or similar water craft comprising at least one retractable anchor element selectively movable between an upper or travel position and a lower or anchor position affixed to the houseboat having a swivel pad specifically configured to anchor the houseboat coupled to the lower portion thereof and a control device operatively coupled to the retractable anchoring element to control the vertical extension and retraction of the retractable anchor element to selectively extend the retractable anchor element downward relative to the houseboat to imbed the swivel pad in the bottom thereby anchoring the houseboat and to retract the retractable anchor element upward relative to the houseboat to permit normal travel of the houseboat.
    Type: Grant
    Filed: July 11, 1979
    Date of Patent: March 10, 1981
    Inventor: William S. Crenshaw