摘要:
A golf ball with aerodynamic coefficient magnitude and aerodynamic force angle, resulting in improved flight performance, such as increased carry and flight consistency regardless of ball orientation. In particular, the present invention is directed to a golf ball having increased flight distance as defined by a set of aerodynamic requirements at certain spin ratios and Reynolds Numbers, and more particularly the golf ball has a low lift coefficient at a high Reynolds Number.
摘要:
The present invention comprises an automated machine for testing the physical properties of spherical objects. Preferably, the apparatus comprises a firing mechanism that includes an inner and outer barrel. An object inside the firing mechanism is propelled towards a striking surface that faces the firing mechanism. Two sensors located at predetermined points between the firing mechanism and the striking surface measure the inbound and outbound velocity of the object. A computing device then uses an algorithm to determine the COR of a given set of objects. An angular device uses gravity to direct the objects to a retrieval chute, which uses a tubing system to direct the objects for re-testing or collection.
摘要:
The present invention is directed towards a golf ball and a method of making the golf ball, which comprises a center and at least one fused, wound layer. The fused wound layer can be a cover layer or an intermediate layer. In one embodiment, the fused wound layer surrounds the center to form a wound core and a cover surrounds the core. In another embodiment the fused wound layer forms the outer surface of the ball. The method of the present invention allows the characteristics of the wound layer to be altered and controlled after the wound layer has been formed. In the method, fusing occurs by applying heat alone or with pressure to the wound core. In one embodiment, fusing can occur during formation of the cover layer. In one embodiment, single, double, multi-ply or multi-strand thread is used. The cross-sectional shape and area of the thread can be, for example, rectangular or circular.
摘要:
A wound golf ball that includes a wound core surrounded by a cover, wherein the wound layer is at least partially impregnated with a thermoplastic or thermoset material. The wound core is formed of a fluid-filled or solid center, and at least one wound layer surrounding the center.
摘要:
The present invention generally relates to an automated ball launching method and apparatus. The apparatus includes ball pick and place mechanisms, an air cannon, spin and velocity inducing belt drive assemblies, electric leveling jack stands, electric angle linear drive, and a computer control system. The apparatus is capable of automatically controlling ball spin, velocity, and launch angle.
摘要:
The present invention generally relates to an automated ball launching method and apparatus. The apparatus includes ball pick and place mechanisms, an air cannon, spin and velocity inducing belt drive assemblies, electric leveling jack stands, electric angle linear drive, and a computer control system. The apparatus is capable of automatically controlling ball spin, velocity, and launch angle.
摘要:
A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.
摘要:
A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 percent by weight unreacted isocyanate groups.
摘要:
A low compression, resilient golf ball having a center including a material formed from the conversion reaction of sufficient amounts of polybutadiene, a free radical source, and a cis-to-trans catalyst to convert a portion of cis-isomer to trans-isomer in the polybutadiene, wherein said material has an amount of trans-isomer greater than the amount of trans-isomer present before the conversion reaction, and wherein the reaction product includes low levels or substantially no antioxidant.
摘要:
A method and an apparatus for measuring coefficient of restitution of an impact are disclosed. The apparatus includes a launching device, an enclosure, a second initially stationary object, and a plurality of speed sensors. The launching device causes a first object to be moved toward the second object and to impact the second object within the enclosure. The sensors are positioned within the enclosure to determine the velocity of the first object before impact, the velocity of the second object after impact and optionally the velocity of the first object after impact. Using these velocities, the coefficient of restitution of the impact can be determined. By using an enclosure and a second object that is initially stationary and is moved upon impact, the coefficient of restitution of the first object can be determined. The apparatus closely simulates a real-world golf ball/golf club collision. The first object may simulate a golf ball or a golf ball core assembly and the second object may simulate a golf club, and vice versa. The apparatus may also continually and automatically return the second object to its initial, pre-impact position, and the apparatus may be used to determine the durability of golf balls by repeatedly impacting golf balls against the second object.