Games using tangible projectile – Golf – Club or club support
Patent
1994-12-30
1996-10-29
Wong, Steven B.
Games using tangible projectile
Golf
Club or club support
473318, A63B 5310
Patent
active
055690998
ABSTRACT:
A low-torque lightweight shaft and a laminar structural element and method for its manufacture are described. The invented shaft is fabricated by fabricating a laminar structural element in the form of a planar sheet or blank patterned and sized for spirally, rather than helically, wrapping around a mandrel. The laminar structural element preferably includes oppositely angularly biased plies interposed by a longitudinally or "zero" oriented ply of any suitable binder-containing, oriented boron or carbon fiber-filled polyacrylonitrile (PAN) sheet material. Preferably, another zero orientation ply, prior to wrapping, is placed above one of the bias plies, thereby ensuring complete separation of the opposing bias plies in the finished shaft. Typically, each ply is approximately 4-6 mils thick and the overall wall thickness of the wall of the finished shaft is approximately 30 mils, rendering the shaft approximately 30% thinner, and significantly lighter in weight, than conventional shafts. Nevertheless, the shaft is because of its unique laminar construction more torque resistant and less subject to shear than those of conventional, helically wrapped, laminar construction. The shaft may be fabricated otherwise by methodology means, whether manual or automated.
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