Golf club head with adjustable weight bar
A golf club head with means for adjusting a center of gravity along more than one axis is disclosed herein. The golf club head comprises at least one rectangular weight bar disposed within a recessed region on the sole and adjustable within the recessed region. One end of the weight bar is reversibly fixed to the sole with a connection element, while the other end includes an engagement feature that engages a retention feature at the edge of the recessed region. The retention feature provides multiple locations at the edge of the recessed region to which the engagement feature can be fixed, and when the weight bar is in a configuration desired by a golfer, the weight bar can be reversibly secured to the sole and immobilized within the recessed region by tightening the connection element. The weight bar may also include a slidable weight assembly.
1. A golf club head comprising:
a body comprising a face, sole, heel side, toe side, and rear side;
a weight bar comprising a central region having a first width W1, a first end having a through-bore and a second width W2, a second end having a third width W3, and a hook extending from the second end; and
a screw comprising a head portion and a threaded portion,
wherein the sole comprises a recessed region, a threaded receiving opening within the recessed region, and a retention feature disposed along an elongated edge of the recessed region,
wherein the retention feature is selected from the group consisting of a rail and a narrow groove,
wherein the hook engages the retention feature,
wherein the threaded portion of the screw extends through the through-bore to engage the threaded receiving opening and removably affix the weight bar to the sole within the recessed region, and
wherein W1 is greater than W2 and W3.
2. The golf club head of claim 1 , wherein the recessed region comprises a swing surface, wherein the swing surface comprises a plurality of elongated structures extending across the swing surface in a radial pattern, and wherein the plurality of elongated structures is selected from the group consisting of linear grooves and linear ridges.
3. The golf club head of claim 2 , wherein the swing surface has a constant radius, and wherein the weight bar comprises a convex lower surface having a constant radius.
4. The golf club head of claim 2 , wherein the weight bar comprises a lower surface, and wherein the lower surface comprises at least one protrusion sized to contact at least one of the plurality of elongated structures during adjustment of the weight bar.
5. The golf club head of claim 1 , wherein W1 is at least 1.5 times W2 or W3.
6. The golf club head of claim 1 , wherein the receiving opening is disposed at a center region of the sole between the heel side and the toe side.
7. The golf club head of claim 1 , wherein the second end comprises a pointer, and wherein the sole comprises a plurality of adjustment indicia proximate the retention feature.
8. The golf club head of claim 7 , wherein each of the plurality of adjustment indicia is aligned with one of the plurality of elongated structures.
9. The golf club head of claim 1 , further comprising a slidable weight assembly, wherein the slidable weight assembly comprises an upper piece, a lower piece, and a mechanical fastener connecting the upper piece to the lower piece, wherein the weight bar comprises at least one rail, and wherein the mechanical fastener reversibly affixes the slidable weight assembly to the at least one rail.
10. The golf club head of claim 1 , wherein the head portion of the screw comprises a first angled shoulder, wherein the first end comprises a second angled shoulder encircling the through-bore, and wherein the first angled shoulder presses against the second angled shoulder when the screw is engaged with the through-bore and the threaded receiving opening to place the weight bar in compression between the screw and the retention feature.
11. The golf club head of claim 10 , wherein the second end comprises a compressible feature.
12. The golf club head of claim 1 , further comprising a crown composed of a non-metal material, and wherein the body comprises an upper opening sized to receive the crown.
13. The golf club head of claim 1 , wherein at least a portion of the recessed region is composed of a non-metal material, and wherein a remainder of the body is composed of a metal material.
14. The golf club head of claim 13 , wherein the non-metal material is selected from the group consisting of carbon composite and plastic, and wherein the metal material is selected from the group consisting of titanium alloy and steel.
15. A wood-type golf club head comprising:
a metal alloy body comprising a face, sole, heel side, toe side, upper opening, and rear side;
a composite crown sized to close the upper opening;
a weight bar comprising a central region having a first width W1, a first end having a through-bore and a second width W2, a second end having a third width W3, an engagement feature extending from the second end, a lower surface, and at least one protrusion extending from the lower surface; and
a screw comprising a head portion and a threaded portion,
wherein the sole comprises a recessed region, a threaded receiving opening within the recessed region, and a retention feature disposed along an elongated edge of the recessed region,
wherein the recessed region comprises a swing surface,
wherein the swing surface comprises a plurality of elongated structures selected from the group consisting of linear grooves and linear ridges extending across the swing surface,
wherein the hook engages the retention feature,
wherein the least one protrusion contacts at least one of the plurality of elongated structures during adjustment of the weight bar,
wherein the threaded portion of the screw extends through the through-bore to engage the threaded receiving opening and removably affix the weight bar to the sole within the recessed region, and
wherein the weight bar is placed in tension or in compression when the screw is engaged with the threaded receiving opening.
16. The wood-type golf club head of claim 15 , wherein W1 is greater than W2 or W3.
17. The wood-type golf club head of claim 16 , wherein W1 is at least 1.5 times W2 or W3.
18. The wood-type golf club head of claim 15 , wherein the engagement feature is a hook, and wherein the retention feature is selected from the group consisting of a rail and a narrow groove.
19. The wood-type golf club head of claim 15 , wherein the recessed region comprises an outer surface having a constant radius, and wherein the lower surface of the weight bar is convex and has a constant radius.
20. The wood-type golf club head of claim 15 , wherein the head portion comprises a first angled shoulder, wherein the first end comprises a second angled shoulder encircling the through-bore, and wherein the first angled shoulder presses against the second angled shoulder when the screw is engaged with the through-bore and the threaded receiving opening.