Patents by Inventor Weldon M. Johnson

Weldon M. Johnson 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).

  • Apparatus for forming laminates
    Patent number: 5391253
    Abstract: A press forms a long, thin laminated strip of plastic, metal and fiberglass. The uncured laminate will be laid up in a housing which has sidewalls and a base. A partition is placed over the laminate. The partition seals to sidewalls of the housing and is moveable relative to the housing. The partition divides the cavity of the housing into an upper section and a lower section. The lower section is evacuated. Gas or fluid pressure is applied to the upper section. Heat is applied to the housing to cure the laminate while the pressure is maintained. Tension is applied longitudinally to the laminate during the process.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: February 21, 1995
    Inventors: Richard E. Howell, Weldon M. Johnson
  • Method for forming long thin flexible laminates
    Patent number: 5256235
    Abstract: A method and apparatus to form a long, thin laminated strip of plastic, metal and fiberglass. The uncured laminate will be laid up in a housing which has sidewalls and a base. A partition is placed over the laminate. The partition seals to sidewalls of the housing and is movable relative to the housing. The partition divides the cavity of the housing into an upper section and a lower section. The lower section is evacuated. Gas or fluid pressure is applied to the upper section. Heat is applied to the housing to cure the laminate while the pressure is maintained. Tension is applied longitudinally to the laminate during the process.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: October 26, 1993
    Inventors: Richard E. Howell, Weldon M. Johnson