Taylor Made Golf Company, Inc.

Serge Solviche

Philippe Renard

Jean-Marc Banchelin

Benoit Vincent

Benedicte Beau

Process of manufacturing a golf club shaft made of composite materials, including the successive steps of fitting a tubular, flexible impermeable bladder around a rigid mandrel, dressing the mandrel with a composite structure including fibers impregnated with a synthetic resin matrix, placing the mandrel in the mold, and then carrying out a molding operation by applying at least one internal pressure exerted by feeding a fluid inside the bladder.

Process of manufacturing a golf club shaft

Process for manufacturing a golf club shaft made of composite materials, including the successive steps of fitting a tubular, flexible impermeable bladder around a rigid mandrel whose length is at least equal to the length of the shaft to be produced, dressing the mandrel with a composite structure comprising fibers impregnated with a synthetic resin matrix, placing the mandrel in the mold, and then carrying out a mold operation by applying at least one internal pressure exerted by feeding a fluid inside the bladder.

Process of making a golf club shaft

The invention relates to a shaft for a golf club, or to a club equipped with such a shaft. On at least 30% of the length of the shaft, its peripheral wall includes at least two layers, i.e., a first layer made of a material of density (.rho.1) and of longitudinal Young's modulus (E1), and a second layer made of a material of density (.rho.2) and of longitudinal Young's modulus (E2), the first and second layers being separated by a separation layer made of a substantially isotropic material having a density (.rho.3) and a longitudinal Young's modulus (E3), the densities (.rho.1, .rho.2) of the materials of the first and second layers being greater than the density (.rho.3) of the material of the separation layer, the longitudinal Young's moduli (E1, E2) of the materials of the first and second layers being respectively greater than 20 GPa, and the longitudinal Young's modulus (E3) of the material of the separation layer being lower than 20 GPa.

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Cran Gevrier, France

Serge Solviche