Manufacture of elongate articles
AssigneeOakbray Investment Company, Ltd.
InventorCharles William Wright
Life of this patent
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Abstract
A method of manufacturing an elongate article such as a golf club shaft. An elongate hollow polymer core is formed by gas injection molding. A plurality of layers of a curable material are wrapped around the core. The layers have a uniaxial reinforcement with the reinforcement in respective layers inclined relative to each other. The wrapped core is subsequently cured.
Claims34
A method of manufacturing an elongate article, the method comprising the steps of:
- forming an elongate hollow polymer core by injection moulding in a closed mould;
- wrapping a plurality of layers of a curable fibre reinforced material around the core, each successive layer being formed from an elongate strip of material aligned parallel to a direction of elongation of the article and being of a size to substantially surround the core;
- and curing the wrapped core at a temperature such that during said curing the core becomes tacky and fuses with the wrapped material, and wherein the strips of material are of a size to substantially completely surround the core with no overlap.
A method of manufacturing an elongate article, the method comprising the steps of:
- forming an elongate hollow polymer core by injection moulding in a closed mould;
- wrapping a plurality of layers of a curable fibre reinforced material around the core, each successive layer being formed from an elongate strip of material aligned parallel to a direction of elongation of the article and being of a size to substantially surround the core;
- and curing the wrapped core at a temperature such that during said curing the core becomes tacky and fuses with the wrapped material, and wherein the polymer is nylon based.
A method of manufacturing a shaft for a golf club, comprising:
- forming an elongate hollow polymer core for the golf club shaft by injection moulding in a closed mould;
- wrapping a plurality of layers of a curable fibre reinforced material around the core, each successive layer being formed from an elongate strip of material aligned parallel to a direction of elongation of the shaft and being of a size to substantially surround the core;
- and curing the wrapped core at a temperature such that during said curing the core becomes tacky and fuses with the wrapped material, and wherein the strip of curable reinforced material in contact with the core is of a size to substantially completely surround the core with no overlap.
A method of manufacturing a shaft for a fishing rod, comprising:
- forming an elongate hollow polymer core for the fishing rod shaft by injection moulding in a closed mould;
- wrapping a plurality of layers of a curable fibre reinforced material around the core, each successive layer being formed from an elongate strip of material aligned parallel to a direction of elongation of the shaft and being of a size to substantially surround the core;
- and curing the wrapped core at a temperature such that during said curing the core becomes tacky and fuses with the wrapped material, and wherein the strip of curable reinforced material in contact with the core is of a size to substantially completely surround the core with no overlap.
A method of manufacturing a shaft for an aerial, comprising:
- forming an elongate hollow polymer core for the aerial shaft by injection moulding in a closed mould;
- wrapping a plurality of layers of a curable fibre reinforced material around the core, each successive layer being formed from an elongate strip of material aligned parallel to a direction of elongation of the shaft and being of a size to substantially surround the core;
- and curing the wrapped core at a temperature such that during said curing the core becomes tacky and fuses with the wrapped material, and wherein the strip of curable reinforced material in contact with the core is of a size to substantially completely surround the core with no overlap.
Dependencies are inferred from the claim text.