Patent ID: 6168871
Filing Date: 2001-01-02
Classification: B22F,B23P,F01D,F05C,F05D,Y10T

Abstract:
A double-walled article comprising: an outer wall member; an inner wall member; and at least one plenum disposed between the inner member and the outer member to define a double-walled structure for the double-walled article; the double-walled article further comprising a secondary material disposed in the double-walled article, the secondary material selected from the group consisting of fiber materials, wire materials, particulate materials, and compositions; wherein the double-walled article is formed by the method comprising the steps of: providing a cavity formed between inner and outer mold members; placing a metallic powder in the cavity between the inner and outer mold members; forming an exterior shell having a desired configuration for the double-walled article by consolidating the metallic powder within the cavity at an elevated temperature for heating and pressure in a non-oxidizing atmosphere; removing at least the outer mold member to expose the exterior shell of the double-walled article; and securing the exterior shell to an interior structure of the double-walled article.