Golf club heads and methods to manufacture golf club heads
Embodiments of golf club heads and methods to manufacture golf club heads are generally described herein. In one example, a golf club head may include a face portion having a front surface and a back surface with a plurality of back surface grooves. Each back surface groove includes a groove opening with a groove opening width and an interior groove width at a location inside the back surface groove. The interior groove width is greater than the groove opening width. The golf club head further includes a body portion and an interior cavity enclosed by coupling the face portion and the body portion, a port connected to the interior cavity; and a polymer material injected into the interior cavity from the port and filling the plurality of back surface grooves. Other examples and embodiments may be described and claimed.
1. A golf club head comprising:
a body portion having a front portion, a toe portion with a toe portion edge, a heel portion with hosel portion, a back portion with a back wall portion, a top portion with a top portion edge, a sole portion with a sole portion edge, and an interior cavity;
a first mass portion having a cylindrical shape;
a face portion coupled to the front portion to close the interior cavity;
a second mass portion coupled to the body portion below a horizontal midplane of the body portion, the second mass portion having a first end, a second end, a width, and a length defined by a distance between the first end and the second end, the length of the second mass portion being greater than the width of the second mass portion;
a port having a cylindrical shape configured to receive the first mass portion to close the port; and
a polymer material in the interior cavity,
wherein the port is located above the second mass portion at or proximate to the toe portion edge,
wherein the port is connected to the interior cavity,
wherein the polymer material is injected in the interior cavity from the port,
wherein a distance between the first end of the second mass portion and the toe portion edge is less than a distance between the second end of the second mass portion and the toe portion edge,
wherein the second mass portion is made from a material having a greater density than a material of the body portion,
wherein the second mass portion is made from a material having a greater density than a material of the first mass portion,
wherein the first mass portion and the second mass portion are spaced apart from the face portion, and
wherein a total mass of the second mass portion is greater than or equal to five times a total mass of the first mass portion.
2. A golf club head as defined in claim 1 , wherein the body portion is made from a material having a greater density than a material of the first mass portion.
3. A golf club head as defined in claim 1 , wherein at least a portion of the length of the second mass portion extends in the same direction as the sole portion edge.
4. A golf club head as defined in claim 1 , wherein a distance between the first end of the second mass portion and the horizontal midplane is less than a distance between the second end of the second mass portion and the horizontal midplane.
5. A golf club head as defined in claim 1 , wherein the back wall portion of the body portion includes a port having a shape configured to receive the second mass portion.
6. A golf club head as defined in claim 1 , wherein the face portion comprises a thickness of greater than about 1.0 millimeter (0.040 inch) and less than about 1.9 millimeters (0.075 inch).
7. A golf club head as defined in claim 1 further comprising a mass portion located above the horizontal midplane and located on the body portion opposite to the hosel portion to counter-balance a mass of the hosel portion.
8. A golf club head comprising:
a body portion having a front portion, a toe portion with a toe portion edge, a heel portion with hosel portion, a back portion with a back wall portion, a top portion with a top portion edge, a sole portion with a sole portion edge, and an interior cavity;
a face portion coupled to the front portion to close the interior cavity;
a first mass portion having a cylindrical shape;
a second mass portion coupled to the body portion below a horizontal midplane of the body portion, the second mass portion having a first end, a second end, a width, and a length defined by a distance between the first end and the second end, the length of the second mass portion being greater than the width of the second mass portion;
a port above the second mass portion and connected to the interior cavity, the port configured to engage the first mass portion to close the port; and
a polymer material injected in the interior cavity from the port,
wherein a distance between the port and the toe portion edge is substantially less than a distance between the port and the hosel portion,
wherein a distance between the first end of the second mass portion and the horizontal midplane is less than a distance between the second end of the second mass portion and the horizontal midplane,
wherein the second mass portion is located on the body portion such that a greater portion of a total mass of the second mass portion is closer to the toe portion edge than the hosel portion,
wherein at least a portion of the length of the second mass portion extends in the same direction as the sole portion edge,
wherein the first mass portion is made from a material having a smaller density than a material of the body portion,
wherein the second mass portion is made from a metallic material having a greater density than a material of the body portion, and
wherein a total mass of the second mass portion is greater than or equal to five times a total mass of the first mass portion.
9. A golf club head as defined in claim 8 , wherein a portion of the second mass portion extends in the same direction as the toe portion edge.
10. A golf club head as defined in claim 8 , wherein a width of the second mass portion is similar along the length of the second mass portion.
11. A golf club head as defined in claim 8 , wherein the port is located at or proximate to the toe portion edge.
12. A golf club head as defined in claim 8 , wherein the back wall portion of the body portion includes a port having a shape configured to receive the second mass portion, and wherein the second mass portion is bonded in the port with a bonding agent.
13. A golf club head as defined in claim 8 , wherein an outer surface of the second mass portion defines an outer surface of the back wall portion.
14. A golf club head comprising:
a body portion having a front portion, a toe portion with a toe portion edge, a heel portion with hosel portion, a back portion with a back wall portion, a top portion with a top portion edge, a sole portion with a sole portion edge, and an interior cavity;
a face portion coupled to the front portion to close the interior cavity;
a first mass portion having a threaded outer wall;
a second mass portion coupled to the body portion below a horizontal midplane of the body portion, the second mass portion having a first end, a second end, a width, and a length defined by a distance between the first end and the second end, the length of the second mass portion being greater than the width of the second mass portion; and
a port above the second mass portion and connected to the interior cavity, the port having a threaded inner wall configured to engage the threaded outer wall of the first mass portion to close the port,
wherein a distance between the first end of the second mass portion and the toe portion edge is less than a distance between the second end of the second mass portion and the toe portion edge,
wherein a distance between the port and the toe portion edge is less than a distance between the port and the hosel portion,
wherein a distance between the first end of the second mass portion and the horizontal midplane is less than a distance between the second end of the second mass portion and the horizontal midplane,
wherein the second mass portion is made from a material having a greater density than a material of the body portion,
wherein the second mass portion is made from a material having a greater density than a material of the first mass portion,
wherein the first mass portion and the second mass portion are spaced apart from the face portion, and
wherein a total mass of the second mass portion is greater than or equal to five times a total mass of the first mass portion.
15. A golf club head as defined in claim 14 , wherein at least a portion of the length of the second mass portion extends in the same direction as the sole portion edge, and wherein at least another portion of the second mass portion extends in the same direction as the toe portion edge.
16. A golf club head as defined in claim 14 , wherein a width of the second mass portion is similar along the length of the second mass portion.
17. A golf club head as defined in claim 14 , wherein the face portion comprises a thickness of greater than about 1.0 millimeter (0.040 inch) and less than about 1.9 millimeters (0.075 inch).
18. A golf club head as defined in claim 14 , wherein the first mass portion is bonded in the port with a bonding agent.
19. A golf club head as defined in claim 14 , wherein the second mass portion is made of a tungsten-based material.
20. A golf club head as defined in claim 14 , wherein the port is located at or proximate to the toe portion edge.