Games using tangible projectile – Golf – Club or club support
Reexamination Certificate
2007-03-30
2010-06-01
Blau, Stephen L. (Department: 3711)
Games using tangible projectile
Golf
Club or club support
Reexamination Certificate
active
07727083
ABSTRACT:
A golf club shaft having at least six full-length layers composed of prepregs. The full-length layers are divided into an inner-layer part including a half of the full-length layers and an outer-layer part including a remaining half of the full-length layers. At least one pair of the full-length layers is formed as a bias set layer in each of the inner-layer part and the outer-layer part by layering two bias layers with each other, with reinforcing fibers of the bias layers intersecting with each other at an orientation angle of ±θ° which fall in a range from ±25° to ±65° with respect to an axis of the golf club shaft. A straight layer is formed as an outermost full-length layer of the outer-layer part with reinforcing fiber thereof orienting at the range from 0° to ±10° with respect to the axis of the shaft.
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Birch & Stewart Kolasch & Birch, LLP
Blau Stephen L.
SRI Sports Limited
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