Patents by Inventor David Gregory Llewellyn

David Gregory Llewellyn 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).

  • Publication number: 20240050819
    Abstract: A golf club head can comprise a hollow body comprising a shell defining at least some of an exterior surface of the golf club head, and the hollow body can include a ball-striking face, a crown, a hosel, a sole, and a rear end opposite the ball-striking face. A recess can be located on the sole and can extend toward an interior of the hollow body. An opening can be located within the recess and can be defined by one or more sidewalls. A weighted insert can insert into the recess and the opening and can comprise a first end, a second end, and a middle portion disposed therebetween. The first end can extend outwardly from the middle portion in a toe-to-heel direction and the second end can extend outwardly from the middle portion in a heel-to-toe direction. A weight can be disposed within the weighted insert.
    Type: Application
    Filed: October 23, 2023
    Publication date: February 15, 2024
    Inventors: Kei Tsuji, David Gregory Llewellyn
  • Patent number: 11794082
    Abstract: A golf club head can comprise a hollow body comprising a shell defining at least some of an exterior surface of the golf club head, and the hollow body can include a ball-striking face, a crown, a hosel, a sole, and a rear end opposite the ball-striking face. A recess can be located on the sole and can extend toward an interior of the hollow body. An opening can be located within the recess and can be defined by one or more sidewalls. A weighted insert can insert into the recess and the opening and can comprise a first end, a second end, and a middle portion disposed therebetween. The first end can extend outwardly from the middle portion in a toe-to-heel direction and the second end can extend outwardly from the middle portion in a heel-to-toe direction. A weight can be disposed within the weighted insert.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: October 24, 2023
    Assignee: Mizuno Corporation
    Inventors: Kei Tsuji, David Gregory Llewellyn