Patents by Inventor James H. Campbell, Jr.

James H. Campbell, Jr. 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).

  • Method for manufacturing composite parts
    Patent number: 6666942
    Abstract: A method for manufacturing composite parts includes positioning a plurality of composite layers on an application surface formed by a plurality of tooling members and filler members on a mandrel. A part formation aid is disposed on the composite layers above each tooling member. The filler members are then removed, and the composite layers slit over the recesses. The mandrel, the tooling members, the composite layers, and the part formation aids are placed in a vacuum bag. As the bag is evacuated, each part formation aid forces the side edge of the composite layers formed by the slit around the respective tooling member, thereby forming a composite part with a desired shape, thickness, and density. In an alternate embodiment, a flanged composite panel is formed around a rectangular mandrel after positioning composite layers on an outer surface of the mandrel and an outer surface of a filler member disposed on one end of the mandrel.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: December 23, 2003
    Assignee: Lockheed Martin Corporation
    Inventor: James H. Campbell, Jr.
  • Method for manufacturing composite parts
    Patent number: 6406580
    Abstract: A method for manufacturing composite parts includes positioning a plurality of composite layers on an application surface formed by a plurality of tooling members and filler members on a mandrel. A part formation aid is disposed on the composite layers above each tooling member. The filler members are then removed, and the composite layers slit over the recesses. The mandrel, the tooling members, the composite layers, and the part formation aids are placed in a vacuum bag. As the bag is evacuated, each part formation aid forces the side edge of the composite layers formed by the slit around the respective tooling member, thereby forming a composite part with a desired shape, thickness, and density. In an alternate embodiment, a flanged composite panel is formed around a rectangular mandrel after positioning composite layers on an outer surface of the mandrel and an outer surface of a filler member disposed on one end of the mandrel.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: June 18, 2002
    Assignee: Lockheed Martin Corporation
    Inventor: James H. Campbell, Jr.