Undercut dimples for a golf ball

A - Human Necessities – 63 – B

Patent

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Details

A63B 37/12 (2006.01) A63B 37/00 (2006.01) A63B 37/14 (2006.01)

Patent

CA 2431019

A new configuration for at least some of the dimples on the surface of a golf ball (2) is characterized by undercut portions (16) in the concave surface (10) thereof. The undercut dimples (4) have a first diameter at the surface of the golf ball and a second diameter beneath the surface which is greater than the first diameter. Thus, a portion of the ball surface (2a) overhangs an annular portion of the dimple at the periphery thereof. The undercut portions (16) create additional turbulence at the surface of the golf ball (2) as it flies through the air to improve the aerodynamic efficiency of the dimples, thereby reducing drag and increasing the distance the ball will travel when struck.

L'invention concerne une nouvelle configuration d'au moins certaines des alvéoles de la surface d'une balle (2) de golf, caractérisée par des parties (16) évidées par-dessous la surface concave (10) de la balle. Les alvéoles (4) à évidement sous-jacent présentent un premier diamètre à la surface de la balle, et, au-dessous de la surface, un deuxième diamètre supérieur au premier diamètre. De cette manière, une partie de la surface (2a) de la balle surplombe une partie annulaire de l'alvéole, sur le pourtour de celle-ci. Les parties (16) ainsi évidées produisent une turbulence supplémentaire à la surface de la balle (2) lorsque celle-ci traverse l'air, qui améliore l'efficacité aérodynamique des alvéoles de manière à réduire la résistance de frottement et à accroître la distance parcourue par la balle frappée.

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