Wire wrapped composite spiral hose and method
OwnerNewell P. Kraikinventor
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Abstract
The invention discloses a wire wrapped composite spiral hose, having a plurality of layers of fabric wrapped around a preformed convolute hose and held in place by a continuous wire spaced within the convolutions. A method and device for preparing the hose is disclosed using parallel elongate mandrels which are synchronized to rotate and apply the wire spaced in the convolutions.
Claims15
A composite hose, comprising a preformed plastic hose base structure having an exterior surface comprising a spiral convolution formed therein;
- a plurality of layers of fabric enveloping said convoluted exterior surface of said base structure;
- a wire, wrapped along said spiral convolution and engaging and distending said plurality of layers of fabric against said plastic hose base;
- means for retaining an end of said wire to said hose;
- said wire engaging said fabric within said spiral convolution of said base structure.
A method for preparing a composite hose comprising mounting a preformed convoluted hose, having a continuous spiral valley at the surface thereof, to an elongate rotatable mandrel;
- wrapping a plurality of layers of sheet fabric along the length of the convoluted hose, each layer of said fabric at least in part overlapping itself and subsequent layers overlapping previous layers;
- rotating said convoluted hose comprising said plurality of layers and progressively wrapping, along said continuous valley of said preformed hose, a wire which engages a surface of an outer layer of said fabric and distends said fabric layers within said continuous spiral valley;
- and fastening said wire at an end of said hose.
Dependencies are inferred from the claim text.