Golf ball

Details Golf ball Golf ball

1990-09-12

1991-12-17

Marlo, George J.

Amusement devices: games

Board games, pieces, or boards therefor

Electrical

40327, A63B 3712

Patent

active

050729454

ABSTRACT:
A golf ball having a spherical surface with a great circle zone along a parting line, the surface being divided by a central angle .theta. of the sphere of 10.degree..ltoreq..theta.<60 above and below the parting line to form a central S region and a polar P region. A plurality of kinds of dimples are arranged in both the S region, SD.sub.n, and the P region, PD.sub.n, the dimples of each region being geometrically symmetric about the parting line. The curvatures diameters, depths and volumes of the dimples within a region differ between kinds of dimples. At least one type of dimple in the S region has a corresponding type of dimple in the P region, the correspondence being equal curvature. The value of the volumes of the corresponding pairs of dimples are set such that 1.0223 VSD.sub.n /VPD.sub.n .ltoreq.1.25.

REFERENCES:
patent: 4744564 (1988-05-01), Yamada
patent: 4813677 (1989-03-01), Oka et al.
patent: 4880241 (1989-11-01), Melvin et al.

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