Patents by Inventor Gary D. MacDougall

Gary D. MacDougall 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).

  • Boat hull including moulded shell structure
    Patent number: 5634425
    Abstract: A reinforced plastic hull structure is disclosed, wherein the hull is preferably rotary molded with homogeneously connected inner and outer shell molds, the configuration including a plurality of longitudinally extending stiffening members between the inner and outer shells to which a transverse reinforcing means is connected. The transverse reinforcing means is preferably the unitary floor panel of the boat, which is connected to planar flanges at the freely extending ends of the longitudinally extending stiffening members, both along the central section of the planar floor panel, and at its outward ends.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: June 3, 1997
    Assignee: Allied Plastics International Limited
    Inventor: Gary D. MacDougall
  • Ceramic or Modified silicone filled molding tools for high temperature processing
    Patent number: 5632925
    Abstract: A mold in accordance with the present invention can be formed by a method which utilizes a fiber reinforced pre-ceramic resin composite which is cured and fired to form a Continuous Fiber Ceramic Composite (CFCC), or alternatively by use of a pre-ceramic matrix composite, which is cured, but not fired into a ceramic state.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: May 27, 1997
    Assignee: Logic Tools L.L.C.
    Inventors: Richard Moulton, Doyle Dixon, Robert L. Stevens, Gregg Siewert, Gary D. MacDougall
  • Boat hull shell having an integral support structure
    Patent number: 5601048
    Abstract: A method of forming a shell structure using rotary molding techniques where two halves of the shell are molded together and then joined when the two halves of the shell are in a molten state. The method is particularly useful for molding one-piece boat hulls.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 11, 1997
    Inventor: Gary D. MacDougall
  • Method of rotary moulding a shell structure having an integral support structure
    Patent number: 5458844
    Abstract: A method of forming a shell structure using rotary moulding techniques where two halves of the shell are moulded together and then joined when the two halves of the shell are in a molten state. The method is particularly useful for moulding one-piece boat hulls.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: October 17, 1995
    Assignee: Allied Plastics International Limited
    Inventor: Gary D. MacDougall