A golf ball with an aerodynamic surface on a polyurethane cover

A - Human Necessities – 63 – B

Patent

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Details

A63B 37/14 (2006.01) A63B 37/00 (2006.01)

Patent

CA 2359466

A dimple pattern for a golf ball (20) with a thermoset polyurethane cover (21) is disclosed herein. The dimple pattern has multiple sets of dimples (34, 36, 38, 40, 42, 44 and 46), each set of dimples (34, 36, 38, 40, 42, 44 and 46) having a different diameter. A preferred set of dimples (34, 36, 38, 40, 42, 44 and 46) is seven different dimples (34, 36, 38, 40, 42, 44 and 46). The dimples (34, 36, 38, 40, 42, 44 and 46) may cover as much as eighty-six percent of the surface (22) of the golf ball (20). The unique dimple pattern allows a golf ball (20) with a thermoset polyurethane cover (21) to have shallow dimples (34, 36, 38, 40, 42, 44 and 46) with steeper entry angles. The unique dimple pattern also allows a golf ball (20) with a thermoset polyurethane cover (21) to have greater low speed lift with a lower high speed drag.

La présente invention concerne un arrangement d'alvéoles de balle de golf (20) avec enveloppe en polyuréthanne thermodurci (21). L'arrangement d'alvéoles comporte des ensembles multiples d'alvéoles (34, 36, 38, 40, 42, 44 et 46), chaque ensemble d'alvéoles (34, 36, 38, 40, 42, 44 et 46) possédant des alvéoles de différents diamètres. Un ensemble préféré d'alvéoles (34, 36, 38, 40, 42, 44 et 46) comporte sept alvéoles différentes (34, 36, 38, 40, 42, 44 et 46). Les alvéoles (34, 36, 38, 40, 42, 44 et 46) peuvent couvrir jusqu'à quatre vingt six pour cent de la surface (22) de la balle de golf (20). Cet arrangement unique permet à une balle de golf (20), avec enveloppe en polyuréthanne thermodurci (21), de comporter des alvéoles peu prononcées (34, 36, 38, 40, 42, 44 et 46) présentant des angles d'entrée plus prononcés. Cet arrangement unique d'alvéoles confère aussi à une balle de golf (20), avec enveloppe en polyuréthanne thermodurci (21), une montée plus importante à basse vitesse et une traînée plus faible à vitesse élevée.

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