Patents Assigned to Roger Derek Morrison-Jones
  • Multi-hull boats
    Patent number: 4348971
    Abstract: An inflatable catamaran comprises a central tubular longitudinal torsion beam carrying a mast and a set of four or five cross beams secured at their centers to the longitudinal torsion beam and at their outer ends to a pair of inflatable hulls. Each hull has an upper inflatable tube and a lower inflatable tube tightly held together by side walls.
    Type: Grant
    Filed: March 30, 1978
    Date of Patent: September 14, 1982
    Assignee: Roger Derek Morrison-Jones
    Inventor: Jon A. Montgomery