Flexible duct apparatus and method for use in aircraft environmental control systems
OwnerReg Tomerlin, Allen W. Harwood +2inventors
InventorsReg Tomerlin, Allen W. Harwood, Richard Hoff, Andrew Whitehead
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Abstract
A light-weight high-strength flame resistant flexible duct for use in the environmental control system of an air craft is formed of a generally circular cross section tube formed of a fluro-polymeric film joined along its length at an adhesive seam. The outer and inner surfaces of the tube are electronically treated to provide for enhanced adhesive bonding. A reinforcing cord formed of a self-reinforcing thermoplastic polymer is helically wound upon the tube and joined there to by adhesive.
Claims18
For use in an aircraft environmental control systems, a flexible duct comprising:
- a light-weight high-strength flame resistant tube formed of a flouro-polymeric material defining a generally circular cross section having an inner surface and an outer surface;
- a helical reinforcing cord formed of a self-reinforcing circular cross section thermoplastic polymer wound upon said outer surface;
- and
- an adhesive attachment binding said helical reinforcing cord to said outer surface,
- said outer surface being electronically treated to enhance the bonding of adhesive attachment binding said helical reinforcing cord to said outer surface.
For use in an aircraft environmental control systems, a flexible duct comprising:
- a light-weight high-strength flame resistant tube formed of a flouro-polymeric material defining a generally circular cross section having an inner surface and an outer surface;
- an elongated reinforcing cord formed of a self-reinforcing thermoplastic polymer wound upon said outer surface;
- and
- an adhesive attachment binding said reinforcing cord to said outer surface,
- said outer surface being electronically treated to enhance the bonding of adhesive attachment binding said reinforcing cord to said outer surface.
Dependencies are inferred from the claim text.