Manufacture of boat hulls and other hollow articles
OwnerGerald Herbert Holtominventor
Life of this patent
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Abstract
A boat hull is made by winding a layer of glass-fibre around a male mould, winding a layer of foam sandwich material on top of the glassfibre, and then winding a second layer of glassfibre on top of the foam.
Claims12
A method of constructing hollow articles comprising providing a male mould, coating the mould with a release agent, covering the release agent on the mould with at least a first layer of resin impregnated fibre, then with a winding of at least one layer of synthetic foam about the fibre, winding at least a further layer of fibre impregnated with resin about the foam with sufficient resin and under sufficient tension so that resin is forced into the joints between adjacent winds of foam to form a sandwich of foam between the layers of fibre and to form resin bridges connecting the first and further layers of fibre at the joints between adjacent winds of foam, removing the mould by cutting the sandwich into at least two parts, and rejoining the two parts with forming a tongue-and-groove interconnection in the foam layer.
A method of constructing a boat hull with an integral deck comprising providing a male mould, coating the mould with a release agent, covering the release agent on the mould with at least a first layer of resin impregnated fibre, then with a winding of at least one layer of synthetic foam about the fibre, winding at least a further layer of fibre impregnated with resin about the foam to form a sandwich of foam between the layers of fibre, removing the mould by cutting the sandwich into at least two parts and rejoining the parts with forming a tongue-and-groove interconnection in the foam layer to form a hollow hull.
Dependencies are inferred from the claim text.