摘要:
A golf club shaft comprising a laminate of a plurality of fiber reinforced resinous layers formed of one pair of angle layers consisting of a first angle layer and a second angle layer or a plurality of pairs of angle layers consisting of the first and second angle layers such that a fiber of the first angle layer and that of the second angle layer incline in opposite directions at an angle 20°-35° with respect to an axis of the golf club shaft. The first angle layer and the second angle layer are wound by 1.5 turns in a cross-sectional face of the golf club shaft. A winding start point of the first and that of the second angle layers are dislocated at 180° in a circumferential direction of the golf club shaft. In a cross-sectional face of the golf club shaft, a part consisting of two first angle layers and one second angle layer layered one upon another and a part consisting of one first angle layer and two second angle layers layered one upon another are formed.
摘要:
At least one layer of inclined prepregs having reinforcing fiber oriented an angles not 0° and 90° with respect to the axis of a golf club shaft is wound by unintegral turns more than zero at at least one part of the golf club shaft in an axial direction thereof. A part of the prepreg(s) corresponding to partial turns obtained by subtracting integral turns form the unintegral turns forms an anisotropic region. In this manner, it is possible to obtain an anisotropic shaft in which the angle of the reinforce fiber is partly different from that of other parts in the circumferential direction of the shaft and further, at at east one part in the thickness direction thereof.
摘要:
A golf club shaft wherein an outer diameter of a base end of a grip side is arranged to be 16.5 mm to 26.0 mm, and weight of the shaft is arranged to be 30 g to 55 g. Low bend point rate determined by a formula {backward flex/(forward flex+backward flex)}.times.100 is set to be 55% to 61%.
摘要:
Method for the take-up of continuous filament bundles of synthetic fibers at a high speed, which comprises introducing the continuous filament bundles discharged from an air jetting device and carried on the air stream into a bent tube provided downstream from the air jetting device, which is rotating in substantially reverse direction to that of the continuous filament bundles discharged from the outlet of the bent tube at a peripheral speed of the outlet thereof being 0.5 to 2.0 times the take-up speed of the continuous filament bundles (e.g. 2,000 to 6,000 m/min.), and receiving the continuous filament bundles into a receiving device provided downstream of the bent tube, and an apparatus useful for the take-up of the continuous filament bundles.
摘要:
A golf club head comprises a ball striking face having a loft angle of from 6 to 30 degrees, and has a depth of the gravity center of not less than 18 mm, wherein the ball striking face is provided with a high frictional region of which maximum static friction coefficient at a high load of 400 kgf is not less than 0.35 whereby back spin of a hit ball is decreased and the flying distance of the ball can be increased. The high-load friction coefficient can be obtained by means of surface treatment, for example, etching, blasting, polishing, spraying a metal compound, vapor deposition of a metal compound and the like.
摘要:
The invention relates to an iron club head. The face thereof is equally divided into four sections. The weight of the outermost section of the toe side among the four sections is arranged to be 35%-60% of the overall weight of the head.