US 9,808,684 B2
Iron set groove progression
Marni Ines, San Marcos, CA (US); Jonathan Hebreo, San Diego, CA (US); and Michael E. Franz, Carlsbad, CA (US)
Assigned to Acushnet Company, Fairhaven, MA (US)
Filed by Acushnet Company, Fairhaven, MA (US)
Filed on May 25, 2016, as Appl. No. 15/164,738.
Application 15/164,738 is a continuation of application No. 14/675,050, filed on Mar. 31, 2015, granted, now 9,370,699.
Prior Publication US 2016/0287951 A1, Oct. 6, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. A63B 53/00 (2015.01); A63B 53/04 (2015.01)
CPC A63B 53/047 (2013.01) [A63B 2053/005 (2013.01); A63B 2053/0408 (2013.01); A63B 2053/0445 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A set of iron type golf club heads, comprising:
a plurality of iron type golf club heads, said plurality of iron type golf club heads comprising a long iron having a loft angle greater than or equal to 15 degrees and less than 26 degrees, a mid iron having a loft angle greater than or equal to 26 degrees and less than 37 degrees, and a short iron having a loft angle greater than or equal to 37 degrees and less than 47 degrees;
wherein each of said plurality of iron type golf club heads comprise a striking face, and wherein each of said plurality of iron type golf club heads comprise a plurality of grooves formed in said striking face extending generally from a heel side of said striking face towards a toe side of said striking face;
wherein said plurality of grooves of each of said plurality of iron type golf club heads comprise an edge radius, wherein said edge radius of said plurality of grooves of said long iron is greater than said edge radius of said plurality of grooves of said short iron;
wherein said edge radius of said plurality of grooves is the radius of the edge at the intersection of a wall of each groove of said plurality of grooves and an outer surface of the striking face;
wherein said edge radius of said plurality of grooves of said short iron is less than 0.005″;
wherein said plurality of grooves of each of said plurality of iron type golf club heads comprise a draft angle, wherein said draft angle of said plurality of grooves of said long iron is less than said draft angle of said plurality of grooves of said short iron;
and wherein said draft angle of said plurality of grooves is the angle measured between each wall of each groove of said plurality of grooves and a plane perpendicular to said outer surface of the striking face.