Golf club iron
View Patent ↗A golf club iron having a thin front face which is supported by a biasly bent L-shaped insert that is disposed into a rear cavity of the iron to both support the front face and to create a “spring like” effect. The coefficient of restitution of the club head is greater than 0.8. The insert has a lower specific gravity and a higher Young's Modulus than the front face.
1. A golf club head comprising:
a body including a front face, a perimeter weight surrounding the front face to define a rear cavity; and
an L-shaped rear cavity insert biasly interposed within the rear cavity and juxtaposed against at least 50 percent of a back surface of the front face so as to create a force and provide support inside the cavity for at least 50 percent of the front face.
2. The golf club head of claim 1 , wherein the L-shaped rear cavity insert creates a force and provides support for substantially the entire front face.
3. The golf club head of claim 1 , wherein the coefficient of restitution of the golf club head is greater than 0.79.
4. The golf club head of claim 1 , wherein the rear cavity insert is a composite laminated sheet of one or more layers.
5. The golf club head of claim 1 , wherein prior to insertion the rear cavity insert has an angle that is at least 2% larger than the bend angle.
6. The golf club head of claim 1 , wherein the rear cavity insert exerts a pre-load force against at least 50 percent of the back surface of the front face inside the cavity of between 0–3000 lbs.
7. The golf club head of claim 6 , wherein the coefficient of restitution of the golf club head is greater than 0.79.
8. The golf club head of claim 6 , wherein the rear cavity insert is a composite laminated sheet of one or more layers.
9. A golf club head comprising:
a body including a front face and a perimeter weight surrounding the front face and defining a rear cavity;
the perimeter weight including a sole portion having a sole recess defined therein; and
an L-shaped rear cavity insert biasly bent within the sole recess so as to create a force against substantially the entire front face,
wherein the rear cavity insert is juxtaposed against at least 50 percent of a back surface of the front face inside the cavity and against a portion of the wall of the sole cavity so as to provide support for at least 50 percent of the front face.
10. A set of golf irons comprising:
long irons, each having a body including a front face and a perimeter weight surrounding the front face and defining a rear cavity;
the perimeter weight including a sole portion having a sole recess defined therein;
an L-shaped rear cavity insert biasly interposed within the sole recess so as to be juxtapose and create a force against at least 50 percent of a back surface of the front face inside the cavity and the surface of the sole recess.
11. The set of golf club irons of claim 10 , wherein the rear cavity insert is a composite laminated sheet of one or more layers.