Golf club set having similar properties

Abstract

A set of ball striking devices, such as a set golf clubs, having similar characteristics between clubs within the set of clubs such as length, weight, and lie angle. Characteristics can include lengths and lie angle.

1 . A set of golf clubs comprising:
 a plurality of iron-type golf clubs, each iron-type golf club comprising:
 an iron-type golf club head having a striking face configured for striking a ball, a body extending rearwardly from the striking face, and a face thickness, the body having a top surface, a sole, a heel, and a toe, and a hosel including a hosel axis; 
 a shaft configured to engage with the iron-type golf club head at a first end and a grip engaged with the shaft at a second end opposite the first end; 
 wherein each of the plurality of iron-type golf clubs has a length, a lie angle, a weight, a swing weight, and a center of gravity; 
 wherein each of the plurality of iron-type golf clubs includes an iron-type golf club ground plane origin point located at the point at which the ground plane and the hosel axis intersect and a hosel origin point located on the hosel axis and coincident with an uppermost edge of the hosel; and 
 wherein each of the plurality of iron-type golf club heads comprises an x-axis, a y-axis, and a z-axis that pass through the iron-type golf club ground plane origin point; wherein:
 the x-axis is parallel to the ground plane and parallel to the striking face; 
 the y-axis is perpendicular to the x-axis and extending rearwardly from the striking face; and 
 the z-axis is perpendicular to the ground plane and extending in a direction from the sole to the top surface; and 
 
 wherein each of the plurality of iron-type golf clubs further comprises an x′-axis, a y′-axis, and a z′-axis that pass through the hosel origin point; wherein:
 the z′-axis extends along the direction of an axis of the shaft, 
 the y′-axis is perpendicular to the z′-axis and extends toward a rear of the golf club head; and 
 the x′-axis extends perpendicular to the y′-axis and the z′-axis; and 
 a distance ΔX is measured from the center of gravity to the z′-axis, along an axis parallel to the x′-axis, and a distance ΔY is measured from the center of gravity to the z′-axis along an axis parallel to the y′-axis; 
 
   wherein each of the plurality of iron-type golf clubs has a different loft angle in a range of 23 degrees to 60 degrees; and   wherein the plurality of iron type golf clubs comprises:
 a first iron-type golf club having a first loft angle and a first face thickness; and 
 a second iron-type golf club having a second loft angle and a second face thickness;
 wherein the second loft angle is greater than the first loft angle; and 
 wherein the second face thickness is greater than the first face thickness; 
 
   wherein a distance between the center of gravity is within 2 mm of a distance between the iron-type golf club ground plane origin point in the y-axis direction for the plurality of iron-type golf clubs; and   wherein each of the iron-type golf club heads has a moment of inertia with respect to the hosel axis within about 200 g*cm 2  of each other;   wherein each of the plurality of iron-type golf club heads has a ratio of a center of gravity location measured from the hosel origin point ΔX to ΔY that is within a range of 2.6 to 3.0;   wherein the plurality of iron-type golf clubs comprise:
 a first iron-type club that is perimeter weighted and comprises one or more rear cavities and having a loft angle in the range of 24 degrees to 28 degrees, and 
 a second iron-type club not comprising one or more rear cavities and having a loft angle in the range of 48 degrees to 54 degrees. 
   
     
     
         2 . The set of golf clubs of  claim 1 , wherein the iron-type golf clubs have a substantially equal gap distance between each club within the set of golf clubs. 
     
     
         3 . The set of golf clubs of  claim 1 , wherein the iron-type golf clubs have a length within the range of 36.5 inches to 38.5 inches. 
     
     
         4 . The set of golf clubs of  claim 1 , wherein the iron-type golf clubs have a substantially equal weight. 
     
     
         5 . The set of golf clubs of  claim 4 , wherein the iron-type golf clubs have a head weight within the range of 240 grams to 260 grams. 
     
     
         6 . The set of golf clubs of  claim 1 , wherein each of the iron-type golf club heads has a moment of inertia with respect to the hosel axis within a range of 7,200 g*cm 2  and 7,600 g*cm 2 . 
     
     
         7 . The set of golf clubs of  claim 1 , wherein each of the iron-type golf club heads has a moment of inertia with respect to an x-axis within about 200 g*cm 2  of each other. 
     
     
         8 . The set of golf clubs of  claim 1 , wherein each of the iron-type golf club heads has a moment of inertia with respect to a y-axis within about 200 g*cm 2  of each other. 
     
     
         9 . The set of golf clubs of  claim 1 , wherein each of the iron-type golf club heads has a moment of inertia with respect to a z-axis within about 200 g*cm 2  of each other. 
     
     
         10 . A set of golf clubs comprising:
 a plurality of iron-type golf clubs, each iron-type golf club comprising:
 an iron-type golf club head having a striking face configured for striking a ball, a body extending rearwardly from the striking face, and a face thickness, the body having a top surface, a sole, a heel, and a toe, and a hosel including a hosel axis; 
 a shaft configured to engage with the iron-type golf club head at a first end and a grip engaged with the shaft at a second end opposite the first end; 
 wherein each of the plurality of iron-type golf clubs has a length, a lie angle, a weight, a swing weight, and a center of gravity; 
 wherein each of the plurality of iron-type golf clubs includes an iron-type golf club ground plane origin point located at the point at which the ground plane and the hosel axis intersect and a hosel origin point located on the hosel axis and coincident with an uppermost edge of the hosel; and 
 wherein each of the plurality of iron-type golf club heads comprises an x-axis, a y-axis, and a z-axis that pass through the iron-type golf club ground plane origin point; wherein:
 the x-axis is parallel to the ground plane and parallel to the striking face; 
 the y-axis is perpendicular to the x-axis and extending rearwardly from the striking face; and 
 the z-axis is perpendicular to the ground plane and extending in a direction from the sole to the top surface; and 
 
 wherein each of the plurality of iron-type golf clubs further comprises an x′-axis, a y′-axis, and a z′-axis that pass through the hosel origin point; wherein:
 the z′-axis extends along the direction of an axis of the shaft, 
 the y′-axis is perpendicular to the z′-axis and extends toward a rear of the golf club head; and 
 the x′-axis extends perpendicular to the y′-axis and the z′-axis; and 
 a distance ΔX is measured from the center of gravity to the z′-axis, along an axis parallel to the x′-axis, and a distance ΔY is measured from the center of gravity to the z′-axis along an axis parallel to the y′-axis; 
 
   wherein each of the plurality of iron-type golf clubs has a different loft angle in a range of 23 degrees to 60 degrees; and   wherein the plurality of iron type golf clubs comprises:
 a first iron-type golf club having a first loft angle and a first face thickness; and 
 a second iron-type golf club having a second loft angle and a second face thickness;
 wherein the second loft angle is greater than the first loft angle; and 
 wherein the second face thickness is greater than the first face thickness; 
 
   wherein a distance between the center of gravity is within 2 mm of a distance between the iron-type golf club ground plane origin point in the y-axis direction for the plurality of iron-type golf clubs; and   wherein each of the iron-type golf club heads has a moment of inertia with respect to the hosel axis within about 200 g*cm 2  of each other;   wherein each of the plurality of iron-type golf club heads has a ratio of a center of gravity location measured from the hosel origin point ΔX to ΔY that is within a range of 2.6 to 3.0;   wherein the plurality of iron-type golf clubs comprise:   a first iron-type club having a loft angle in the range of 24 degrees to 28 degrees, and   a second iron-type club having a loft angle in the range of 48 degrees to 54 degrees.   
     
     
         11 . The set of golf clubs of  claim 10 , wherein the iron-type golf clubs have a substantially equal gap distance between each club within the set of golf clubs. 
     
     
         12 . The set of golf clubs of  claim 10 , wherein the iron-type golf clubs have a length within the range of 36.5 inches to 38.5 inches. 
     
     
         13 . The set of golf clubs of  claim 10 , wherein the iron-type golf clubs have a substantially equal weight. 
     
     
         14 . The set of golf clubs of  claim 13 , wherein the iron-type golf clubs have a head weight within the range of 240 grams to 260 grams. 
     
     
         15 . The set of golf clubs of  claim 10 , wherein each of the iron-type golf club heads has a moment of inertia with respect to the hosel axis within a range of 7,200 g*cm 2  and 7,600 g*cm 2 . 
     
     
         16 . The set of golf clubs of  claim 10 , wherein each of the iron-type golf club heads has a moment of inertia with respect to an x-axis within about 200 g*cm 2  of each other. 
     
     
         17 . The set of golf clubs of  claim 10 , wherein each of the iron-type golf club heads has a moment of inertia with respect to a y-axis within about 200 g*cm 2  of each other. 
     
     
         18 . The set of golf clubs of  claim 10 , wherein each of the iron-type golf club heads has a moment of inertia with respect to a z-axis within about 200 g*cm 2  of each other.