Games using tangible projectile – Golf – Ball
Patent
1994-12-19
1996-06-18
Marlo, George J.
Games using tangible projectile
Golf
Ball
473383, A63B 3712
Patent
active
055270433
ABSTRACT:
In the golf ball having a large number of dimples on its surface, a golf ball characterized in that dimples are arranged so as to satisfy the following condition for the plane development obtained by drawing imaginarily a great circle line to bisect the golf ball on the golf ball surface and developing the semisphere by the Lambert's equivalent projection. The center of the plane development is assigned to 0, drawing two large and small regular triangles .DELTA.ABC and .DELTA.abc centered at this 0 such that each vertex is in the same direction from the said center 0, extending each side of said small regular triangle .DELTA.abc so that it intersects each side of the large regular triangle .DELTA.ABC, thereby forming one regular triangle coinciding with said small regular triangle .DELTA.abc, three trapezoids, and three parallelograms, and arranging respectively 6 dimples in said one small regular triangle, 9 dimples in said trapezoid, and 4 dimples in said parallelogram. Provided that in the case where any dimple is formed over any two of the small regular triangle, trapezoid, and parallelogram, counting is based on the assumption that the dimple is present in the region where the dimple area accounts for more than 80% of the total area of that dimple.
REFERENCES:
patent: 4346898 (1982-08-01), Badke
patent: 4991852 (1991-02-01), Pattison
patent: 5009428 (1991-04-01), Yamagishi et al.
Bridgestone Sports Co. Ltd.
Marlo George J.
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