| US 8,317,638 B2 | ||
| Golf ball dimples having circumscribed prismatoids | ||
| Michael R. Madson, Pawtucket, R.I. (US); and Nicholas M. Nardacci, Bristol, R.I. (US) | ||
| Assigned to Acushnet Company, Fairhaven, Mass. (US) | ||
| Filed on Sep. 9, 2009, as Appl. No. 12/584,595. | ||
| Prior Publication US 2011/0059813 A1, Mar. 10, 2011 | ||
| Int. Cl. A63B 37/12 (2006.01) | ||
| U.S. Cl. 473—383 | 8 Claims |
| 1. A golf ball having recessed dimples on the surface thereof, wherein at least one dimple comprises:
two discrete geometries that are surrounded by a first circular perimeter; and
one of the discrete geometries comprises a prismatoid depression or protrusion surrounded by a smaller, second circular perimeter
that is circumscribed within the first, and is in contact with all prismatoid vertices,
wherein the aerodynamic flight characteristics of the golf ball are further tuned.
|