The present disclosure relates generally to golf equipment, and more particularly, to golf club heads with three-dimensional alignment members and methods to manufacture golf club heads.
The performance of an individual may be enhanced by improving alignment of a golf club head relative to a golf ball at an address position. For instance, proper alignment between the golf club head and the golf ball may result in better control over the distance, direction, spin, and/or speed of the golf ball. Conversely, an off-center impact may result without proper alignment between the golf club head and the golf ball. An off-center impact may occur if the golf ball contacts the striking face of the golf club head at or proximate to the heel end or the toe end of the striking face. To avoid an off-center impact, the individual may direct his or her vision over the golf club head to improve alignment between the golf club head and the golf ball. To ease and improve the individual's visual alignment, various alignment features may be included on the golf club head.
In general, methods, apparatus, and articles of manufacture associated with golf club heads with a three-dimensional alignment member are described herein. The methods, apparatus, and articles of manufacture described herein are not limited in this regard.
In the example of
The golf club head 100 may also include a bore 170. For example, the bore 170 may be located at or proximate to the heel end 160. The bore 170 may be substantially flushed with a top rail (e.g., the top rail 740 of
With the exception of the bore 170, the golf club head 100 may be substantially symmetrical along an axis 180 as shown in
In the example of
In one example, the first and second arm portions 710 and 720 of the first body portion 110 may form a contour with outward curving end portions with a narrow center portion as shown in
At the front end 130 of the golf club head 100, the face portion 730 may extend between the toe end 150 and the heel end 160. Further, the face portion 730 may connect the first and second arm portions 710 and 720. In one example, the first and second arm portions 710 and 720, and the face portion 730 may be a single integral part of the first body portion 110. In another example, the first arm portion 710, the second arm portion 720, and the face portion 730 may be two or more separate parts coupled together to form the first body portion 110. The face portion 730 may include a striking surface 735 (
Turning to
The second body portion 120 may be made of a second material associated with a second density, which may be less than the first density of a first material used to make the first body portion 110. In particular, the second body portion 120 may be relatively less dense than the first body portion 110 (e.g., the first density is greater than the second density). For example, the second body portion 120 may be made of aluminum-based material(s), plastic-based material(s), polyurethane-based material(s), other suitable type of metal or non-metal materials, and/or any combination thereof. The methods, apparatus, and articles of manufacture described herein are not limited in this regard.
The second body portion 120 may include a visual alignment member 1160 that may be visible to an individual. The visual alignment member 1160 may be based on a golf ball. In particular, the visual alignment member 1160 may be a three-dimensional alignment member formed by the first arcuate portion 1110, the second arcuate portion 1120, and the central portion 1130. In addition, the visual alignment member 1160 may include a first arc section 1162, a second arc section 1164, and a straight section 1166.
The first arc section 1162 may be located on, or integral to, the first arcuate portion 1110 whereas the second arc section 1164 may be located on, or integral to, the second arcuate portion 1120. The first and second arc sections 1162 and 1164 may be convex relative to a plane parallel to the face portion 730 (e.g., the plane 1650 of
The straight section 1166 may be located on, or integral to, the central portion 1130. Further, the straight section 1166 may be positioned between the first and second arc sections 1162 and 1164. In particular, the straight section 1166 may connect the first arc section 1162 and the second arc section 1164. The first arc section 1162, the second arc section 1164, and the straight section 1166 may be sunken sections on the second body portion 120. However, each of the sections of the visual alignment member 1160 may include a raised section, a line, a colored section, or any combination thereof, and/or other suitable types of markings.
The central portion 1130 may include a first side wall 1170 and a second side wall 1180. In one example, the visual alignment member 1160 may also include side wall straight sections, generally shown as 1175 and 1185, on each of the first and second side walls 1170 and 1180, respectively. All sections of the visual alignment member 1160 may be visible to an individual (e.g., the first arc section 1162, the second arc section 1164, the straight section 1166, the first side wall straight section 1175, and the second side wall straight section 1185). For instance, the visual alignment member 1160 may be visible to an individual when the golf club head 100 is positioned to properly address the golf ball 1600. Accordingly, an individual may have better control over the distance, direction, spin, and/or speed of the golf ball 1600.
Further, the second body portion 120 may include one or more cavities, generally shown as a first cavity 1190 and a second cavity 1195. The first cavity 1190 may be associated with the first leg portion 1140 whereas the second cavity 1195 may be associated with the second leg portion 1150. One or more removable weights (not shown) may be disposed in each of the first cavity 1190 and the second cavity 1195. Although the figures may depict the first and second cavities 1190 and 1195 as circular cavities, the first and second cavities 1190 and 1195 may have other suitable shapes (e.g., oval, elliptical, triangular, square, rectangular, etc.).
The second body portion 120 may be coupled to the first body portion 110 to form the golf club head 100. In particular, the first arcuate portion 1110 of the second body portion 120 may be coupled to a back side 1035 (
In the example of
As three-dimensional features, the first and second arcuate portions 1110 and 1120 may each have curvatures in the horizontal direction and the vertical direction. With respect to curvatures in the horizontal direction, the first arcuate portion 1110 may be associated with a first horizontal radius 1610 and a first horizontal arc 1612 relative to a first vertical plane 1650 (
Both the first and second horizontal radii 1610 and 1620 may be substantially equivalent to the radius 1660 of the golf ball 1600. Accordingly, in one example, the first and second horizontal radii 1610 and 1620 may be about 0.84 inches. While the first and second horizontal arcs 1612 and 1622 may be similar in length, the arc lengths are not limited in this regard. For instance, the first horizontal arc 1612 may be longer or shorter than the second horizontal arc 1622. The methods, apparatus, and articles of manufacture are not limited in this regard.
With respect to curvature in the vertical direction, the first arcuate portion 1110 may be associated with a first vertical radius 1710 and a first vertical arc 1712 relative to a horizontal ground plane 1700 (
Both the first and second vertical radii 1710 and 1810 may be substantially equivalent to the radius 1660 of the golf ball 1600. Accordingly, in one example, the first and second vertical radii 1710 and 1820 may be about 0.84 inches. While the first and second vertical arcs 1712 and 1812 may be similar in length, the arc lengths are not limited in this regard. For instance, the first vertical arc 1712 may be longer or shorter than the second vertical arc 1812. The methods, apparatus, and articles of manufacture are not limited in this regard.
Alternatively, the first and second arcuate portions 1110 and 1120 may be larger than the dimensions of the golf ball 1600. For example, as shown in
Further, the golf club head 100 may comprise a plurality of regions 1670, generally shown as a toe region 1672, a middle region 1674, and a heel region 1676 as shown in
The second and third vertical planes 1680 and 1690 may divide the golf club head 100 into three similarly-sized regions. For example, the face portion 730 may have a horizontal length L between the toe end 150 and the heel end 160, and the second vertical plane 1680 may be positioned a distance of approximately (⅓)*L from the toe end 150. Similarly, the third vertical plane 1690 may positioned a distance of approximately (⅓)*L from the heel end 160. Accordingly, the second and third vertical planes 1680 and 1690 may be separated by a distance of approximately (⅓)*L.
The toe region 1672 may include various portions of the golf club head 100 between the toe end 150 of the golf club head 100 and the second vertical plane 1680. For example, the toe region 1672 may include the first arm portion 710 and about one-third of the face portion 730 of the first body portion 110, and the first leg portion 1140 of the second body portion 120.
The middle region 1674 may include various portions of the golf club head 100 between the second and third vertical planes 1680 and 1690. For example, the middle region 1674 may include about one-third of the face portion 130 of the first body portion 110, and the first and second arcuate portions 1110 and 1120 and the central portion 1130 of the second body portion 120.
The heel region 1676 may include various portions of the golf club head 100 between the heel end 160 of the golf club head 100 and the third vertical plane 1690. For example, the heel region 1676 may include the second arm portion 720 and about one-third of the face portion 130 of the first body portion 110, and the second leg portion 1150 of the second body portion 120. In addition, the heel region 1676 may include the bore 170. Alternatively, the heel region 1676 may include a hosel and/or a hosel transition (e.g., the hosel and the hosel transition 1920 of
Although the golf club head 100 may have a total mass m, a majority of the total mass m may be distributed to the perimeter of the golf club head 100 to increase the moment of inertia of the golf club head 100. In one example, the middle region 1674 may be associated with less than 33% of the total mass m whereas each of the toe and heel regions 1672 and 1676 may be associated with more than 33% of the total mass m. In particular, the mass of the middle region 1674 is less than 0.33*m whereas the toe and heel regions 1672 and 1674 are each greater than 0.33*m. To achieve the mass distribution described above, the middle region 1664 of the golf club head 100 may substantially include material(s) having a specific gravity less than 3.5 (grams/cubic centimeters (g/cm3)) such as polyurethane-based material(s), plastic-based material(s), wood-based material(s), carbon fiber laminate-based material(s), etc. For example, the first body portion 110 may be made of a stainless steel-based material whereas the second body portion 120 may be made of a polyurethane-based material to distribute the total mass m as described above. By increasing the moment of inertia, the golf club head 100 may result in fewer miss-hits and improve accuracy of shots.
In another example, the middle region 1674 may be associated with less than 25% of the total mass m whereas each of the toe and heel regions 1672 and 1676 may be associated with more than 35% of the total mass m. In particular, the mass of the middle region 1674 is less than 0.25*m whereas the toe and heel regions 1672 and 1674 are each greater than 0.35*m. To achieve the mass distribution described above, the middle region 1664 of the golf club head 100 may substantially include material(s) having a specific gravity less than 1.5 (grams/cubic centimeters (g/cm3)). The methods, apparatus, and articles of manufacture are not limited in this regard.
While the above examples may describe some portions of the golf club head 100 being an integral part or a separate part of other portions, the apparatus, methods, and articles of manufacture described herein are not limited in this regard. For example, although the above examples may describe the first and second arm portions 710 and 720 as integral parts of the first body portion 110, the first arm portion 710 and/or the second arm portion 720 may be separate part(s) of the first body portion 110.
Although the above examples may depict the first and second body portions 110 and 120 as separate parts coupled together to form the golf club head 100, the first and second body portions 110 and 120 may be a single integral part of the golf club head 100. For example, a golf club head (e.g., the golf club head 2000 of
In the example of
Turning to
In the example of
To form the golf club head 100, the process 3300 may provide the second body portion 120 (block 3320). In particular, the process 3300 may couple the first body portion 110 with the second body portion 120. As noted above, the second body portion 120 may be made of a second material associated with a second density (e.g., a polyurethane-based material). The first and second body portions 110 and 120 may be coupled to each other with various fasteners and/or bonding techniques or processes. For example, the first and second body portions 110 and 120 may be coupled to each other with one or more screws (e.g., generally shown as 310, 320, and 330 of
The process 3300 may provide the visual alignment member 1160 (block 3330). The visual alignment member 1160 may be a three-dimensional alignment member formed by the first arcuate portion 1110, the second arcuate portion 1120, and the central portion 1130. The first arc section 1162, the second arc section 1164, and the straight section 1166 may include sunken sections on the second body portion 120. However, each of the sections of the visual alignment member 1160 may be comprised of a raised section, a line, a colored section, or any combination thereof, and/or other suitable types of markings.
Although the process 3300 may be described above with respect to the golf club head 100, the process 3300 may be applicable to other golf club heads. In addition, while a particular order of actions is illustrated in
Although one or more figures may depict a putter-type club head, the methods, apparatus, and articles of manufacture described herein may be readily applicable to other suitable types of golf club heads (e.g., driver-type golf club heads, fairway wood-type golf club heads, hybrid-type golf club heads, iron-type golf club heads, wedge-type golf club heads, etc.). The apparatus, methods, and articles of manufacture are not limited in this regard.
Although certain example methods, apparatus, and/or articles of manufacture have been described herein, the scope of coverage of this disclosure is not limited thereto. On the contrary, this disclosure covers all methods, apparatus, and/or articles of manufacture fairly falling within the scope of the appended claims either literally or under the doctrine of equivalents.
This is a non-provisional application claiming the benefit of provisional application No. 61/048,679 filed on Apr. 29, 2008.
Number | Date | Country | |
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61048679 | Apr 2008 | US |