US 4,851,065 AGranted

Construction of hollow, continuously wound filament load-bearing structure

AssigneeTyee Aircraft, Inc.

InventorWilliam C. Curtz

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Abstract

Hollow continuously wound filament integral structures having integral filament and resin interleafs, integral sleeves, and integral end fittings to transfer all loads, their method, and apparatus of manufacture, all center on the making and use of the filament and resin interleafs. In a preferred embodiment each interleaf has spaced leafs, arranged parallel, i.e. at a zero angle, to the longitudinal axis of each hollow continuously wound filament integral structure, of a length to extend from respective ends of the structure, over and well beyond the respective turnaround zones of the continuous filament and resin windings, so all types of loads will be fully transferred. Also each interleaf has circumferential filament and resin root wraps, wound at ninety degrees to the longitudinal axis of each hollow continuously wound filament integral structure, holding the spaced leafs in place and maintaining a circumferential strength to prevent harmful radial expansion of any integrally wound filaments and resin during their transfer of loads, to thereby keep the integral end fittings in place when they are transferring loads.

Claims4

Dependent claims

A method of constructing a continuously wound, filament and resin, elongate tubular structure having a metallic end fitting joined to at least one end of the tubular structure including the steps of:

(a) placing the metallic end fitting at a first end of a mandrel of desired shape;
(b) winding filaments over said mandrel to form a body of said elongate tubular structure;
(c) forming, separately from said tubular structure, a skirt of filaments having a first elongate filament and resin strip and including a plurality of second strips of filament and resin adhesively secured to the first elongate filament and resin strip, said second strips substantially to said first elongate filament and resin strip, parallel to one another;
(d) placing said preformed skirt over said end fitting and mandrel such that said first elongate filament and resin strip overlies at least a portion of said end fitting and said second strips extend from said end fitting over at least a portion of the windings of filament on said mandrel, said second strips being substantially parallel to an elongate dimension of said elongate tubular structure;
and
(e) winding a layer of filaments over the skirt after the skirt is in place on the end fitting and mandrel.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/937,454Filed 1 Dec 1986 · division
Priority: 12 Nov 1982
Granted: 25 Jul 1989
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B29C 70/86
By incorporating or moulding on preformed parts, e.g. inserts or layers , e.g. foam blocks: incorporated in coherent impregnated reinforcing…
B29C 53/585
For making tubular articles with particular features: the cross-section varying along their axis, e.g. tapered, with ribs, or threads, with…
F16C 7/026
Constructions of connecting-rods with constant length: made of fibre reinforced resin
B29L 2031/3076
Vehicles, e.g. ships or aircraft, or body parts thereof: aircrafts