US 4,900,383 AGranted

Convolutely lined and wrapped composite tubes

AssigneeThe Boeing Company

InventorsHarry W. Dursch, Donald A. Anderson, Robert F. Collins

Life of this patent

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Abstract

Methods are provided for lining and wrapping both interior and exterior surfaces of tubular structures with materials that protect the underlying structures from adverse environmental conditions, provide a thermal control coating and prevent exchanging moisture with the surrounding environments. The methods use adhesives to securely position the lining or wrapping material inside or around the exterior of the tubular structure. The adhesives prevent the formation of discontinuities in the protective layer provided by the lining or wrapping material by holding the protective materials in place during the fabrication process. The wrapping materials are sealed by an ultrasonically welded seam to prevent environmental attack through the seam to the underlying tubular structure.

Claims29

Dependent claims

A method of making a tube lined with a metal foil lining material having a first and second end, comprising the steps:

(a) anchoring the first end of the lining material to a support means using an adhesive composition;
(b) convolutely wrapping the lining material at least once around the support means;
(c) anchoring the second end of the lining material to the lining material;
(d) convolutely wrapping an adhesive material around the anchored lining material;
(e) convolutely wrapping a tubing precursor material which comprises a matrix of reinforcing fibers around the adhesive material and butting the ends of said precursor material together without overlaps;
and,
(f) subjecting the support means, lining material, adhesive material and tubing precursor material to curing conditions to cure said adhesive material and tubing precursor material.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/183,680Filed 19 Apr 1988
Granted: 13 Feb 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification21 codes

F16L 57/06
Protection of pipes or objects of similar shape against external or internal damage or wear: against wear
B29C 31/002
Handling, e.g. feeding of the material to be shaped , storage of plastics material before moulding; Automation, i.e. automated handling lines in…:…
B29C 53/42
For articles of definite length, i.e. discrete articles: using internal forming surfaces, e.g. mandrels
B29C 63/0047
Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor: preventing air-inclusions