Golf club head having supported striking face
A golf club head having a supported striking face is disclosed herein. More specifically, the golf club head in accordance with the present invention has a striking face, an internal support layer, and an intermediary sandwiched layer juxtaposed between the striking face and the internal support layer.
1. An iron type golf club comprising:
a golf club head, a grip and a shaft therebetween, wherein the golf club head comprises:
a striking face portion located at a frontal portion of the golf club head and an aft body portion attached to the striking face portion forming a cavity therebetween and forming a topline portion, a sole portion, a toe portion, a heel portion and a hosel, the striking face portion having a face center, a striking face portion back surface, and a face thickness of between 0.6 mm and 2.4 mm at the face center;
an internal support layer located in the cavity and coupled to the aft body portion, the internal support layer having an internal support layer front surface; and
an intermediary sandwiched layer juxtaposed between the striking face portion and the internal support layer and being comprised of a polymeric material having a sandwiched face layer hardness of less than 75 Shore A, the intermediary sandwiched layer having a thickness of 1 mm and 10 mm at the face center, and the intermediary sandwiched layer having an intermediary sandwiched layer front surface and an intermediary sandwiched layer back surface, and;
wherein the striking face portion is comprised of a plurality of standoffs and the aft body portion is comprised of a plurality of locating holes corresponding to the standoff and the standoffs and the locating holes are used to couple the striking face portion to the aft body portion.
2. The golf club of claim 1 , wherein the intermediary sandwiched layer is further comprised of a plurality of locating notches to align the intermediary sandwiched layer with the striking face portion such that the intermediary sandwiched layer front surface abuts between 90% and 100% of the striking face portion back surface.
3. The golf club of claim 2 , wherein the internal support layer is further comprised of a plurality of support layer locating notches to align the internal support layer with the intermediary sandwiched layer such that the internal support layer front surface abuts between 25% and 75% of the intermediary sandwiched layer back surface.
4. The golf club of claim 1 , wherein the aft body portion comprises a perimeter support portion that abuts the internal support layer and separates the internal support layer from a back surface of the aft body portion.
5. The golf club of claim 1 , wherein the aft body portion comprises a plurality of rod members that include the locating holes and abutment surfaces, wherein the abutment surfaces abut the internal support layer and separate the internal support layer from a back surface of the aft body portion.
6. The golf club of claim 1 , wherein the internal support layer is comprised of a thermoplastic material having an internal support layer tensile strength that is at least 10 times greater than an intermediary sandwiched layer tensile strength.
7. The golf club of claim 1 , wherein the striking face portion has a thickness of between 1.4 mm and 1.8 mm at the face center.
8. The golf club of claim 6 , wherein the intermediary sandwiched layer has a thickness of 4 mm and 7 mm at the face center.
9. An iron type golf club comprising:
a golf club head, a grip and a shaft therebetween, wherein the head comprises:
a striking face portion located at a frontal portion of the golf club head and an aft body portion attached to the striking face portion forming a cavity therebetween, a topline portion, a sole portion, a toe portion, a heel portion and a hosel, the striking face portion having a face center and a thickness of between 0.8 mm and 2.4 mm at the face center;
an internal support layer supported by the aft body portion such that it is located in the cavity and has a forward-facing front surface; and
an intermediary sandwiched layer juxtaposed between the striking face portion and the internal support layer, the intermediary sandwiched layer having a thickness of 1 mm and 10 mm at the face center, the intermediary sandwiched layer having an intermediary sandwiched layer back surface and front surface, said intermediary sandwiched layer being comprised of a polymeric material having a sandwiched face layer tensile strength of between 4 MPa and 20 MPa;
wherein the internal support layer comprises a thermoplastic material having a support layer tensile strength of between 60 MPa and 300 MPa and wherein aft body comprises a perimeter support portion circumscribing the cavity and having a perimeter width of between 2 mm and 20 mm and a thickness of between 0.5 mm and 5 mm.
10. The golf club of claim 9 , wherein the striking face portion has a striking face portion back surface and the intermediary sandwiched layer front surface abuts between 90% and 100% of the striking face portion back surface.
11. The golf club of claim 9 , wherein the striking face portion further comprises a plurality of standoffs and the aft body further comprises a plurality of locating holes corresponding with the standoffs to couple the striking face portion to the aft body.
12. The golf club of claim 11 , wherein the aft body portion comprises a perimeter support portion that abuts the internal support layer and separates the internal support layer from a back surface of the aft body.
13. The golf club of claim 11 , wherein the aft body portion comprises a plurality of rod members that include the locating holes and abutment surfaces, wherein the abutment surfaces abut the internal support layer and separate the internal support layer from a back surface of the aft body.