Patents by Inventor Michael A. Duff

Michael A. Duff 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).

  • Anchor adaptor
    Patent number: 10589825
    Abstract: An adaptor for an anchor including a first member configured for coupling a chain and a hollow second member for pivotally coupling an anchor. The second member defines a longitudinally extending blind slot on an inner surface and a longitudinally extending opening diametrically opposite the blind slot. The blind slot configured to restrict pivoting motion of the anchor within the second member and a swivel coupler for coupling the first member to the second member.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: March 17, 2020
    Assignee: CMP GROUP LTD.
    Inventors: Michael A. Duff, Mark Pocock
  • ANCHOR ADAPTOR
    Publication number: 20180319462
    Abstract: An adaptor for an anchor including a first member configured for coupling a chain and a hollow second member for pivotally coupling an anchor. The second member defines a longitudinally extending blind slot on an inner surface and a longitudinally extending opening diametrically opposite the blind slot. The blind slot configured to restrict pivoting motion of the anchor within the second member and a swivel coupler for coupling the first member to the second member.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 8, 2018
    Inventors: Michael A. Duff, Mark Pocock