Amusement devices: games – Puzzles – Take-aparts and put-togethers
Patent
1989-09-28
1991-01-15
Layno, Benjamin
Amusement devices: games
Puzzles
Take-aparts and put-togethers
273167F, 273173, A63B 5304
Patent
active
049847996
ABSTRACT:
A golf clubhead includes a lower density body with a corner-back system of higher density weights. In its basic form the corner-back system has a weight in each corner of the golf clubhead. In other forms the weights may be variously joined, one or more may be deleted, or there may be more than four. The basic form of the corner-back system may be viewed as having a double split of a head weight. The first split yields a toe wieght and a heel weight to reduce twisting along the vertical twist axis. The second split yields upper and lower toe weights and upper and lower heel weights to reduce twisting along the horizontal loft axis. The corner-back system offers a designer an opportunity to optimize moments of inertia along both the vertical twist and the horizontal loft axes. The degree of optimization along either axis is a matter of choice. The quantization of the weights into a double split arises because of constraints by the clubhead's center of mass. The center of mass should be neither too high on nor too far behind the striking face. Mass-bit computations were performed on two near-clubheads. The first had a lower density aluminum body and a corner-back system of higher density tunsten weights. The second had a corner-back configuration with body and weights all of moderate density beryllium copper. The A1-W system had a 40 percent larger moment across the vertical twist axis and a 98 percent larger moment across the horizontal loft axis than the BeCu system. Thus, a head with a lower density body and a corner-back system of higher density weights may be regarded as more inertially efficient than a head in a simple corner-back configuration with body and weights all of one moderate density.
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"Golf World" Magazine, (Jul. 2, 1976 Issue), p. 31. bottom row at left.
"Golf World" Magazine. (Jan. 15, 1988) p. 37.
"Golf Digest" Magazine, Jun. 1976 Issue, p. 30.
Layno Benjamin
Passaniti Sebastiano
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