Patent application number | Description | Published |
20120046129 | GOLF BALL - The invention provides a golf ball having a core, a cover of at least one layer formed over the core, and a plurality of dimples on a surface of an outer layer of the cover. The ball has a coat of paint at the dimples, and non-dimple areas of the ball surface lack a coat of paint, leaving the outer cover layer exposed. The outer cover layer is formed of a material having a material hardness (Shore D) of less than 60. The dimples have a surface coverage (SR) of from 70 to 85%. | 02-23-2012 |
20120161363 | GOLF BALL MOLD AND GOLF BALL MANUFACTURING METHOD - The invention provides a golf ball mold that includes a mold body configured as a plurality of mold parts which have at least a parting surface that defines a parting line at a golf ball equator and removably mate to form a cavity having an inner wall with a plurality of dimple-forming protrusions thereon, and a support pin which has an end face with a plurality of dimple-forming protrusions thereon and is extendable into and retractable from the cavity. The support pin extends into the cavity to support a center sphere and, when in a retracted state, the end face thereof defines a portion of the inner wall of the cavity. The end face of the support pin includes a pole of the cavity and has a peripheral edge which intersects a parallel of latitude at 10 degrees from the pole. | 06-28-2012 |
20120302378 | GOLF BALL - The invention provides a golf ball having, on a surface thereof, a plurality of circular dimples, a plurality of non-circular dimples, and a land area which is a non-dimple region composed of a plurality of arcuate first lands, each formed along an edge of one of the circular dimples, and a plurality of second lands, each arranged so as to bridge between two neighboring circular dimples and having a shape that is recessed at a center portion thereof. The non-circular dimples have an edge shape defined by a plurality of the first lands in combination with a plurality of the second lands. In this golf ball, by fashioning the lands on the ball surface into a unique shape, the surface area of the lands is minimized and the dimple surface coverage is made even larger, increasing the aerodynamic performance and thus enabling the ball to travel even farther. | 11-29-2012 |
20130045819 | MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, an inner cover layer and an outer cover layer, which outer cover layer has a plurality of dimples on a surface thereof. In the golf ball, the hardness relationship between the inner cover layer and the outer cover layer, the ratio of deflection between the solid core and a sphere composed of the solid core encased by the inner cover layer, and the dimple conditions are all optimized. This multi-piece solid golf ball is able to substantially reduce the distance traveled by the ball when struck at a high head speed, while at the same time holding down the decrease in distance when struck at a low head speed. | 02-21-2013 |
20130108783 | GOLF BALL MANUFACTURING METHOD | 05-02-2013 |
20130109505 | GOLF BALL MANUFACTURING METHOD AND GOLF BALL | 05-02-2013 |
20130154156 | GOLF BALL MOLD AND GOLF BALL MANUFACTURING METHOD - A golf ball mold body having a plurality of mold parts with a parting surface defining a parting line along an equator and removably mating to form a cavity having an inner wall with dimple-forming protrusions, and a support pin extendable into and retractable from the cavity, the support pin extending into the cavity to support a center sphere. An end face of the support pin defines a portion of the cavity inner wall when the support pin is retracted. The support pin has a shape satisfying certain conditions, and the support pin and mold body have a gap therebetween set within a specific range. The invention minimizes formation of uneven flash caused by deflection or shifting of support pins, appearance defects caused by damage to the cavity inner wall and contamination by rubbing debris, and the life of the mold is extended. | 06-20-2013 |
20130196790 | MULTI-PIECE SOLID GOLF BALL - The invention provides a multi-piece solid golf ball having a solid core, an inner cover layer and an outer cover layer, which outer cover layer has numerous dimples on a surface thereof. The ball is characterized both in that the core and the inner cover layer are formed so as to have a specific deflection ratio therebetween, and also by the combination of an inner cover layer formed to a specific material hardness and thickness, an outer cover layer formed to a specific material hardness, and dimples which satisfy specific conditions. This multi-piece solid golf ball is able to substantially reduce the distance traveled by the ball when struck at a high head speed, while at the same time holding down the decrease in distance when struck at a low head speed. | 08-01-2013 |
20140024477 | GOLF BALL - The invention provides a golf ball with a surface having a plurality of dimples formed thereon. Some or all of the dimples on the ball surface have a cross-sectional shape in which, letting a straight line passing through any one edge of the dimple and a foot of a perpendicular (pedal) dropped from an imaginary plane defined by a peripheral edge of the dimple to a deepest point of the dimple serve as a reference line, and establishing a plurality of specific regions on the reference line from the dimple edge as 0% to the pedal as 100%, the average depths of the dimple from the reference line in the respective established regions satisfy specific conditions. By reducing the air resistance during flight and thus enhancing the aerodynamic performance, this golf ball achieves a higher trajectory, enabling the ball to travel further. | 01-23-2014 |
20140024478 | GOLF BALL - The invention provides a golf ball with a surface having a plurality of dimples formed thereon. Some or all of the dimples on the ball surface have a cross-sectional shape in which, letting a straight line passing through any one edge of the dimple and a foot of a perpendicular (pedal) dropped from an imaginary plane defined by a peripheral edge of the dimple to a deepest point of the dimple serve as a reference line, and establishing a plurality of specific regions on the reference line from the dimple edge as 0% to the pedal as 100%, the average depths of the dimple from the reference line in the respective established regions satisfy specific conditions. By reducing the air resistance during flight and thus enhancing the aerodynamic performance, this golf ball achieves a higher trajectory, enabling the ball to travel further. | 01-23-2014 |