Golf club head with sound tuning

Abstract

A golf club head with sound tuning. The golf club head includes a hollow body that defines an interior cavity and a sound tuning feature inside the hollow body. The dimensions and location of the tuning feature are selected to alter the vibration behavior of the golf club head.

1 . A golf club head, comprising:
 a body including a crown portion and a sole portion and defining an interior cavity,   wherein the crown portion includes a first crown thickness area having a first crown thickness, a second crown thickness area having a second crown thickness that is greater than the first crown thickness, and a crown transition defining an interface between the first crown thickness area and the second crown thickness area,   wherein the crown transition is located on the crown portion at a location that exhibits at least 75% of a maximum displacement of a vibration mode having a frequency less than about 3600 Hz.,   wherein the sole portion includes a first sole thickness area having a first sole thickness, a second sole thickness area having a second sole thickness that is greater than the first sole thickness, and a sole transition defining an interface between the first sole thickness area and the second sole thickness area, and   wherein the sole transition is located on the sole portion at a location that exhibits at least 75% of a maximum displacement of a vibration mode having a frequency less than about 4100 Hz.   
     
     
         2 . The golf club head of  claim 1 , further comprising a truss system, wherein the truss system comprises a first rib that intersects the first sole thickness area and the second sole thickness area. 
     
     
         3 . The golf club head of  claim 2 , wherein the truss system comprises a second rib that extends from the first rib. 
     
     
         4 . The golf club head of  claim 3 , wherein the second rib intersects the first sole thickness area and the second sole thickness area. 
     
     
         5 . The golf club head of  claim 1 , wherein the crown transition has a length less than about 2.00 mm. 
     
     
         6 . The golf club head of  claim 1 , wherein the crown transition is radiused such that the radius is tangent to the first crown thickness area. 
     
     
         7 . The golf club head of  claim 1 , wherein the sole transition has a length less than about 2.00 mm. 
     
     
         8 . The golf club head of  claim 1 , wherein the sole transition is radiused such that the radius is tangent to the first sole thickness area. 
     
     
         9 . A golf club head, comprising:
 a body including a crown portion and a sole portion and defining an interior cavity; and   a truss system that comprises a first rib disposed on the sole portion,   wherein the sole portion includes a first sole thickness area having a first sole thickness, a second sole thickness area having a second sole thickness that is greater than the first sole thickness, and a sole transition defining an interface between the first sole thickness area and the second sole thickness area,   wherein the sole transition is located on the sole portion at a location that exhibits at least 75% of a maximum displacement of a vibration mode having a frequency less than about 4100 Hz, and   wherein the first rib intersects the first sole thickness area and the second sole thickness area.   
     
     
         10 . The golf club head of  claim 9 , wherein the truss system comprises a second rib that extends from the first rib. 
     
     
         11 . The golf club head of  claim 10 , wherein the second rib intersects the first sole thickness area and the second sole thickness area. 
     
     
         12 . The golf club head of  claim 9 , wherein the sole transition has a length less than about 2.00 mm. 
     
     
         13 . The golf club head of  claim 9 , wherein the sole transition is radiused such that the radius is tangent to the first sole thickness area. 
     
     
         14 . A golf club head, comprising:
 a body including a crown portion and a sole portion and defining an interior cavity,   wherein the crown portion includes a first crown thickness area having a first crown thickness, a second crown thickness area having a second crown thickness that is greater than the first crown thickness, and a crown transition defining an interface between the first crown thickness area and the second crown thickness area,   wherein the crown transition is located on the crown portion at a location that is within about 15 mm of an area of maximum displacement of a vibration mode having a frequency less than about 3600 Hz.,   wherein the crown transition has a length less than about 2.00 mm, and   wherein the crown transition is radiused such that the radius is tangent to the first crown thickness area.   
     
     
         15 . The golf club head of  claim 14 , wherein the sole portion includes a first sole thickness area having a first sole thickness, a second sole thickness area having a second sole thickness that is greater than the first sole thickness, and a sole transition defining an interface between the first sole thickness area and the second sole thickness area. 
     
     
         16 . The golf club head of  claim 15 , wherein the sole transition portion is located on the sole portion at a location that is within about 15 mm of an area of maximum displacement of a vibration mode having a frequency less than about 4100 Hz. 
     
     
         17 . The golf club head of  claim 15 , wherein the sole transition has a length less than about 2.00 mm. 
     
     
         18 . The golf club head of  claim 15 , wherein the sole transition is radiused such that the radius is tangent to the first sole thickness area.