Progressive iron set
AssigneeAcushnet Company
InventorsMarni Ines, Jonathan Hebreo, Michael E. Franz, Eduardo Mendoza
Life of this patent
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Abstract
The present invention is directed to a set of golf clubs comprising long irons, mid-irons and short irons. The irons have a progressive horizontal CG location. Preferably, the long and MID irons have a CG located between about 1 mm and 3 mm towards the hosel and the short iron CG is located between about 3 mm and 4 mm toward the hosel. Further the irons can have a substantially constant blade width with progressively increasing toe height and progressively decreasing scoreline width.
Claims12
A set of golf clubs comprising at least a first golf club, a second golf club, and a third golf club, wherein:
- the first, second and third golf clubs each comprising a heel, a toe, an upper surface, a lower surface, a hosel and a front face having a face center, and
- the first golf club further comprising a first loft angle (LA1) of between 15 and 25 degrees and a first center of gravity positioned horizontally from the face center towards the hosel by a first distance,
- the second golf club comprising a second loft angle (LA2) of between 26 and 36 degrees and a second center of gravity positioned horizontally from the face center towards the hosel by a second distance, and
- the third golf club comprising a third loft angle (LA3) of between 37 and 47 degrees and a third center of gravity positioned horizontally from the face center towards the hosel by a third distance,
- wherein the first distance and the second distance are approximately constant and the third distance is at least 30 percent greater than the first distance, and
- wherein the third distance is greater than the values defined by the line CG-Xfc=0.02(LA)+2, where CG-Xfc is the distance of the center of gravity from the face center toward the hosel in the horizontal direction and LA is loft angle.
A set of golf clubs comprising at least a first golf club, a second golf club, and a third golf club, wherein
- the first, second and third golf clubs each comprising a heel, a toe, an upper surface, a lower surface, a hosel and a front face having a face center, and
- the first golf club further comprising a first loft angle (LA1) of between 15 and 25 degrees and a first center of gravity position horizontally from the face center toward the hosel by a first distance,
- the second golf club comprising a second loft angle (LA2) of between 26 and 36 degrees and a second center of gravity position horizontally from the face center toward the hosel by a second distance, and
- the third golf club comprising a third loft angle (LA3) of between 37 and 47 degrees and a third center of gravity position horizontally from the face center toward the hosel by a third distance,
- wherein the first distance and the second distance are approximately constant and the third distance is at least 30 percent greater than the first distance, and
- wherein the third golf club has a moment of inertia about a shaft axis that falls below the line defined by the linear equation MOI-SA=4.6(LA)+400, wherein MOI-Sa is the moment of inertia about the shaft axis and LA is the loft angle.
Dependencies are inferred from the claim text.