US 7,537,531 B2
Golf ball with small inner core
Derek A. Ladd, Fairhaven, Mass. (US); and Michael J. Sullivan, Barrington, R.I. (US)
Assigned to Acushnet Company, Fairhaven, Mass. (US)
Filed on Mar. 11, 2008, as Appl. No. 12/45,785.
Application 11/427814 is a division of application No. 11/298170, filed on Dec. 10, 2005, granted, now 7,094,160.
Application 11/298170 is a division of application No. 11/094722, filed on Mar. 30, 2005, granted, now 7,001,287.
Application 11/094722 is a division of application No. 10/335720, filed on Jan. 02, 2003, granted, now 6,916,254.
Application 12/045785 is a continuation of application No. 11/707492, filed on Feb. 16, 2007, granted, now 7,361,103.
Application 11/707492 is a continuation of application No. 11/427814, filed on Jun. 30, 2006, granted, now 7,195,569.
Prior Publication US 2008/0188325 A1, Aug. 07, 2008
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 37/06 (2006.01)
U.S. Cl. 473—376 15 Claims
OG exemplary drawing
 
1. A golf ball comprising an inner core, an outer core, an inner cover, and an outer cover wherein the inner core is encased by an outer core wherein the outer core has a volume greater than the inner core, inner cover, or outer cover;
and wherein the inner core has a specific gravity ρ12, the outer core has a specific gravity ρ14, the inner cover has a specific gravity ρ16, and the outer cover has a specific gravity ρ18, wherein the relationship between the specific gravities is expressed by the mathematical expression: ρ16 is greater than ρ18 is greater than ρ12 is greater than ρ14.