GOLF CLUB HEADS WITH ENERGY STORAGE CHARACTERISTICS

1 . A golf club head comprising:

a hollow body comprising:

a strikeface;

a heel region;

a toe region opposite the heel region;

a sole;

and

a crown comprising:

an upper region comprising a top rail; and

a lower region;

wherein:

a cavity is located below the top rail, is located above the lower region of the crown, and is defined at least in part by the upper and lower regions of the crown;

and

the cavity comprises:

a top wall;

a back wall;

a bottom incline;

a back cavity angle measured between the top and back walls of the cavity;

and

at least one channel.

2 . The golf club head of claim 1 , wherein:

the upper region of the crown comprises the top and back walls of the cavity; and

the lower region of the crown comprises the bottom incline of the cavity.

3 . The golf club head of claim 1 , wherein:

the back cavity angle is approximately 70 degrees to approximately 110 degrees.

4 . The golf club head of claim 1 , wherein:

the upper region of the crown further comprises:

a rear wall adjacent to the top wall of the cavity; and

a rear angle measured between the top wall of the cavity and the rear wall of the upper region of the crown.

5 . The golf club head of claim 4 , wherein:

the rear angle is approximately 70 degrees to approximately 110 degrees.

6 . The golf club head of claim 1 , wherein:

the back wall of the cavity is substantially parallel to the strikeface.

7 . The golf club head of claim 1 , wherein:

an apex of the top wall is approximately 0.25 inch to approximately 1.25 inch below an apex of the top rail.

8 . The golf club head of claim 7 , wherein:

a second inflection point is at least approximately 0.5 inch to approximately 1.5 inches below an apex of the top rail.

9 . The golf club head of claim 8 , wherein:

the second inflection point is approximately 0.5 inches to approximately 2 inches above a lowest point of the sole.

10 . The golf club head of claim 1 , wherein:

the at least one channel extends from the heel region to the toe region.

11 . The golf club head of claim 1 , wherein:

a channel width of the at least one channel is substantially constant throughout the channel.

12 . The golf club head of claim 1 , wherein:

a channel toe region width of the at least one channel is smaller than a channel heel region width of the channel.

13 . The golf club head of claim 1 , further comprising:

a cascading sole;

wherein the cascading sole comprises an internal radius transition region from the strikeface to the sole;

and the internal transition region comprises:

a first tier comprising a first thickness;

a second tier comprising a second thickness different than the first thickness; and

a tier transition region between the first tier and the second tier.

14 . The golf club head of claim 13 , wherein the internal transition region further comprises a third tier.

15 . A golf club comprising:

a hollow-bodied golf club head comprising:

a strikeface;

a heel region;

a toe region opposite the heel region;

a sole;

and

a crown comprising:

an upper region comprising a top rail; and

a lower region;

and

a shaft coupled to the hollow-bodied golf club head;

wherein:

a cavity is located below the top rail, is located above the lower region of the crown, and is defined at least in part by the upper and lower regions of the crown;

and

the cavity comprises:

a top wall;

a back wall;

a bottom incline;

a back cavity angle measured between the top and back walls of the cavity;

and

at least one channel.

16 . The golf club of claim 15 , wherein:

the upper region of the crown further comprises:

a rear wall adjacent to the top wall of the cavity; and

a rear angle measured between the top wall of the cavity and the rear wall of the upper region of the crown.

17 . The golf club of claim 15 , further comprising:

a cascading sole;

wherein the cascading sole comprises an internal radius transition region from the strikeface to the sole;

and the internal transition region comprises:

a first tier comprising a first thickness;

a second tier comprising a second thickness different than the first thickness; and

a tier transition region between the first tier and the second tier.

18 . A method for manufacturing a golf club head, comprising:

providing a body, the body having:

a strikeface;

a heel region;

a toe region opposite the heel region;

a sole;

and

a crown comprising:

an upper region comprising a top rail; and

a lower region;

wherein:

a cavity is located below the top rail, is located above the lower region of the crown, and is defined at least in part by the upper and lower regions of the crown;

and

the cavity comprises:

a top wall;

a back wall adjacent to the top wall;

a bottom incline adjacent to the back wall;

a back cavity angle measured between the top and back walls of the cavity;

and

at least one channel.

19 . The method of claim 18 , wherein:

providing the body further comprises the body having a cascading sole;

wherein:

the cascading sole comprises an internal radius transition region from the strikeface to the sole;

and the internal transition region comprises:

a first tier comprising a first thickness;

a second tier comprising a second thickness different than the first thickness; and

a tier transition region between the first tier and the second tier.

20 . The method of claim 19 , wherein the internal transition region further comprises a third tier.