Golf club device

A - Human Necessities – 63 – B

Patent

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Details

A63B 53/14 (2006.01) A63B 53/02 (2006.01) A63B 53/04 (2006.01)

Patent

CA 2494864

A golf club device, more specially a putter (1), comprising a head (2) and a shaft (3) attached to the head (2), possibly being provided with a grip, wherein the moment of mass inertia of the head (2) constitutes less than seventy-nine per cent of the total moment of inertia of the putter (1) when the putter (1) is rotated about an axis of rotation (4), which is perpendicular to the longitudinal axis (7) of the shaft (3) and about one hundred and twenty centimeters from the longitudinal axis (5) of the head (2), and/or wherein the mass of the shaft, including a possible displaceable weight (11), divided by the length of the shaft is at lest one hundred and seventy grams per meter of shaft in a shaft which is up to one meter long, and at least one hundred and ninety grams per meter of shaft in a shaft which is longer than one metre.

L'invention concerne un dispositif de club de golf, plus particulièrement un putter (1), comprenant une tête (2) et un manche (3) fixé à la tête (2), l'extrémité libre du manche (3) étant éventuellement pourvue d'une poignée. Le moment d'inertie de masse de la tête (2) représente moins de 79 % de la totalité du moment d'inertie du putter (1) lorsque celui-ci tourne autour d'un axe de rotation (4), qui est perpendiculaire à l'axe longitudinal (7) du manche (3) et situé à environ 120 centimètres de l'axe longitudinal (5) de la tête (2) et/ou la masse du manche, notamment un éventuel poids mobile (11), divisée par la longueur du manche, est d'au moins 170 grammes par mètre du manche dans un manche qui peut mesurer jusqu'à un mètre de longueur et d'au moins 190 grammes par mètre du manche dans un manche qui mesure plus d'un mètre.

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