Patents by Inventor James L. Grayson

James L. Grayson 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).

  • Flotation supported submersible swim platform
    Patent number: 5025747
    Abstract: A submersible platform functioning as a zone of transition to provide swimmers with a place to rest while allowing them to easily move from a horizontal swimming position to a vertical position necessary for boarding, including a submersible platform pivotally attached to a boat and at its opposite side to a leverage arm, the far end of which is attached to a flotation support. Optionally, the platform may be elongated and attached to the floatation support.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: June 25, 1991
    Inventor: James L. Grayson
  • Yacht tender/boarding vessel
    Patent number: 4854257
    Abstract: There is herein described an improved boarding device for swimmers, divers, and the like, in the form of an invertible catamaran vessel which serves as a yacht tender in it's upright position and as a boarding device for swimmers in it's inverted position.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: August 8, 1989
    Inventor: James L. Grayson