Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1994-09-27
1996-08-20
Davis, Robert
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264258, 264313, 264334, B29C 7044
Patent
active
055476295
ABSTRACT:
One piece hollow airfoils are manufactured from molded carbon filament materials, with internal support structures integrally formed in a single closed mold operation. The outer skins and the internal reinforcement structure all are cured together as an integral unit. To accomplish this, a mold having a cavity defining the outer shape of the airfoil is opened. Precut, pre-preg fiber material and core material then is placed in the mold halves. At least two adjacent elongated resilient mandrels are placed in contact with the precut sheets of pre-preg fiber to press the sheets and core into contact with the mold upon subsequent closure thereof. An elongated web of pre-preg fiber material is placed between the adjacent mandrels, and in contact with them, to cause said edges of the web to contact the sheets of pre-preg fiber material on opposite sides of the mold cavity. The mold is closed; and heat is applied to cure the pre-preg fiber material and to bond the web with the precut sheets. After the airfoil is removed from the cavity, the resilient mandrels are removed by pulling them from an open end of the airfoil. This causes the mandrels to stretch and contract as they are removed from the airfoil.
REFERENCES:
patent: 1393541 (1921-10-01), Kemp
patent: 2693922 (1954-11-01), Ellison et al.
patent: 2773792 (1956-12-01), Nesbesar
patent: 3349157 (1967-10-01), Parsons
patent: 3795559 (1974-03-01), Horn et al.
patent: 3902944 (1975-09-01), Ashton
patent: 3962506 (1976-06-01), Dunahoo
patent: 3967996 (1976-07-01), Kamov et al.
patent: 4169749 (1979-10-01), Clark
patent: 4361533 (1982-11-01), Jenks et al.
patent: 4565595 (1986-01-01), Whitener
patent: 4650534 (1987-03-01), Mussi et al.
patent: 5013507 (1991-05-01), Julien et al.
patent: 5087187 (1992-02-01), Simkulak et al.
patent: 5096649 (1992-03-01), Hansson
patent: 5248242 (1993-09-01), Lallo et al.
Diesen David
Olsen, Jr. William R.
Competition Composites, Inc.
Davis Robert
Ptak LaValle D.
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