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    • 61. 发明申请
    • MULTILAYER CORE GOLF BALL HAVING HARDNESS GRADIENT WITHIN AND BETWEEN EACH CORE LAYER
    • US20100227707A1
    • 2010-09-09
    • US12635124
    • 2009-12-10
    • Michael J. SullivanBrian ComeauDouglas S. GoguenDavid A. Bulpett
    • Michael J. SullivanBrian ComeauDouglas S. GoguenDavid A. Bulpett
    • A63B37/02
    • A63B37/0092A63B37/0062A63B37/0063A63B37/0064A63B37/0075A63B37/0076
    • The present invention is directed to an improved multi-layered core golf ball wherein each core layer comprises its own specific hardness gradient (positive, negative or a combination) in addition to an overall specific hardness gradient from one core layer to the next. In a first embodiment, the golf ball comprises a two layer core and a cover disposed about the two layer core. The two layer core comprises an inner core layer and an outer core layer disposed about the inner core layer. The inner core layer comprises a geometric center and a first outer surface. The inner core layer is formed from a substantially homogenous formulation, comprises a diameter of about 30 mm or lower, and has a plurality of hardnesses of from about 60 Shore C to about 85 Shore C. The geometric center comprises a first hardness and the first outer surface comprises a second hardness wherein the second hardness is greater than the first hardness to define a positive hardness gradient of from about 5 Shore C to about 20 Shore C. The outer core layer comprises an inner surface and a second outer surface. The outer core layer is formed from a substantially homogenous formulation, comprises a thickness of about 10 mm or lower, and has a plurality of hardnesses of from about 60 Shore C to about 95 Shore C. The inner surface comprises a third hardness and the second outer surface comprises a fourth hardness wherein the fourth hardness is greater than the third hardness to define a positive hardness gradient of about 20 Shore C or lower. The third hardness may be similar to the second hardness. The outer core layer further comprises a fifth hardness disposed between the inner surface and the second outer surface in a region extending between about 10% and about 90% of the distance from the inner surface to the second outer surface, wherein the fifth hardness is greater than the third hardness and the fourth hardness. Alternatively, the region may extend radially from about 13 mm to about 20 mm from the geometric center. Finally, the fourth hardness is greater than the first hardness to define a positive hardness gradient of about 30 Shore C or lower. In a second embodiment, the outer core layer differs from that of the first embodiment at least in that: the fourth hardness is less than the third hardness to define a negative hardness gradient of about 20 Shore C or lower; the fifth hardness is less than the third hardness and the fourth hardness; and the fourth hardness is greater than the first hardness to define a positive hardness gradient of about 18 Shore C or lower. The present invention is also directed to a golf ball having certain Shore D hardnesses as disclosed herein.
    • 70. 发明申请
    • GOLF BALL WITH NEGATIVE HARDNESS GRADIENT CORE
    • 高尔夫球与负面硬度梯度核心
    • US20110218057A1
    • 2011-09-08
    • US13108069
    • 2011-05-16
    • Michael J. SullivanBrian ComeauDouglas S. GoguenDavid A. Bulpett
    • Michael J. SullivanBrian ComeauDouglas S. GoguenDavid A. Bulpett
    • A63B37/06
    • A63B37/0063A63B37/0062A63B37/0064A63B37/0075A63B37/0076A63B37/0092
    • A golf ball comprising a single layer core and a cover layer disposed about the single layer core, the single layer core being formed from a substantially homogenous formulation and comprising a geometric center and an outer surface, the single layer core further comprising an inner core region disposed about the geometric center, an outer core region adjacent the outer surface, and an intermediate core region disposed between the inner and outer core regions and extending radially from about 8 mm to about 18 mm from the geometric center. The single layer core has first, second and third hardnesses disposed within the inner core region, outer core region, intermediate core region, respectively, wherein the third hardness is greater than the first hardness and the second hardness, and a hardness of the outer surface is substantially the same as or lower than a hardness of the geometric center.
    • 一种高尔夫球,包括单层芯和围绕单层芯设置的覆盖层,所述单层芯由基本均匀的制剂形成并且包括几何中心和外表面,所述单层芯还包括内芯区域 围绕所述几何中心设置的外芯区域和邻近所述外表面的外芯区域以及设置在所述内芯区域和所述外芯区域之间并且从所述几何中心从约8mm至约18mm径向延伸的中间芯区域。 单层芯具有分别设置在内芯区域,外芯区域,中间芯区域中的第一,第二和第三硬度,其中第三硬度大于第一硬度和第二硬度,并且外表面的硬度 与几何中心的硬度基本相同或不足。