Strands, Rods, Tubes Or Sticklike Bodies To Each Other Only Patents (Class 156/296)
  • Fibrous insulating materials
    Patent number: 3932161
    Abstract: Heat-insulating ceramic pieces are made, suitable for assembly to form the internal linings of gas turbine engine ducts, by producing and shaping an adherent mass of short fibre ceramic filaments and silica sol. After the shaped pieces have been dried, the surface of each is coated with fresh silica sol and the coated surfaces subjected to high intensity heating by means of an impinging flame which forms a very hard erosionresistant skin on each piece.
    Type: Grant
    Filed: April 9, 1973
    Date of Patent: January 13, 1976
    Inventor: Thomas Gordon McNish