US 12,268,938 B2
Golf balls having reduced driver spin
Douglas E. Jones, Dartmouth, MA (US)
Assigned to Acushnet Company, Fairhaven, MA (US)
Filed by Acushnet Company, Fairhaven, MA (US)
Filed on Feb. 3, 2023, as Appl. No. 18/105,267.
Prior Publication US 2024/0261640 A1, Aug. 8, 2024
Int. Cl. A63B 37/06 (2006.01); A63B 37/00 (2006.01)
CPC A63B 37/0063 (2013.01) [A63B 37/0033 (2013.01); A63B 37/0051 (2013.01); A63B 37/0064 (2013.01); A63B 37/0065 (2013.01); A63B 37/0076 (2013.01); A63B 37/0027 (2013.01); A63B 37/0096 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A golf ball, comprising:
a core assemblage comprising:
a center having a surface hardness H1, a diameter D1, and a SCDI compression C1, wherein the center comprises a first rubber formulation comprising a first amount of co-agent;
an inner core layer disposed about the center and having a surface hardness H2, a diameter D2, and a SCDI compression C2, wherein H1 is about 60 percent to about 90 percent of H2 and Cis about 25 percent to about 60 percent of C2, wherein the inner core layer comprises a second rubber formulation comprising a second amount of co-agent, and wherein the first amount is about 30 to about 70 percent of the second amount; and
an outer core layer disposed about the inner core layer and having a surface hardness H3, a diameter D3, and a SCDI compression C3, wherein H2 is about 60 percent to about 90 percent of H3 and C2 is about 40 percent to about 80 percent of C3, wherein the outer core layer comprises a third rubber formulation comprising a third amount of co-agent, wherein the second amount is about 50 to 75 percent of the third amount, and wherein

OG Complex Work Unit Math
where CAC represents the weight percent of the first amount in decimal form based on 100 parts of base rubber in the first rubber formulation, and CAC≤0.2; and CGrSCDI represents a compression gradient (SCDI) of the core assemblage;
an intermediate layer disposed about the core assemblage to form an intermediate ball; and
a cover layer disposed about the intermediate ball.