US20140018183A1 - Golf club head with top line insert - Google Patents
Golf club head with top line insert Download PDFInfo
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- US20140018183A1 US20140018183A1 US13/904,585 US201313904585A US2014018183A1 US 20140018183 A1 US20140018183 A1 US 20140018183A1 US 201313904585 A US201313904585 A US 201313904585A US 2014018183 A1 US2014018183 A1 US 2014018183A1
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- Prior art keywords
- club head
- insert
- golf club
- density
- cavity
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/047—Heads iron-type
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0437—Heads with special crown configurations
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- A63B59/0092—
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
- A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0416—Heads having an impact surface provided by a face insert
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B53/00—Golf clubs
- A63B53/04—Heads
- A63B53/0487—Heads for putters
Abstract
A golf club head having a recess located in a top portion thereof is described and claimed. The recess is located between the heel and the toe and extends toward the sole. The recess may be in the top line of the club head. An insert may be placed within the recess. The insert has a density that is less than the density of the club head body, and the insert preferably is a light-weight insert. The insert may include one or more damping materials. The recess removes material from the club head, which in turn may do one or more of the following: increase the overall size of the club head, expand the size of the club head sweet spot, lower the club head center of gravity, and/or produce a greater club head moment of inertia. Thus, the recess and insert produce a more forgiving and playable golf club. As an alternative to a recess, a thin protrusion may be provided at the top line of the club head and the insert provided with a corresponding groove to facilitate attachment.
Description
- This application is a continuation-in-part of U.S. patent application Ser. No. 10/843,622 filed on May 12, 2004, now pending, which is incorporated herein by reference in its entirety.
- 1. Field of the Invention
- The present invention relates to a golf club, and, more particularly, to a golf club head having a top line recess with a light-weight insert.
- 2. Description of the Related Art
- Golf club heads come in many different forms and makes, such as wood- or metal-type, iron-type (including wedge-type club heads), utility- or specialty-type, and putter-type. Each of these styles has a prescribed function and make-up. The present invention relates to golf club heads that have a predominantly solid material area located near the top of the club head.
- Iron-type and utility-type golf club heads generally include a front or striking face, a top line, and a sole. The front face interfaces with and strikes the golf ball. A plurality of grooves, sometimes referred to as “score lines,” is provided on the face to assist in imparting spin to the ball. The top line is generally configured to have a particular look to the golfer and to provide structural rigidity for the striking face. A portion of the face may have an area with a different type of surface treatment that extends fractionally beyond the score line extents. Some club heads have the surface treatment wrap onto the top line. The sole of the golf club is particularly important to the golf shot because it contacts and interacts with the ground during the swing.
- In conventional sets of iron-type golf clubs, each club includes a shaft with a club head attached to one end and a grip attached to the other end. The club head includes a face for striking a golf ball. The angle between the face and a vertical plane is called the loft angle.
- The set generally includes irons that are designated
number 3 through number 9, and a pitching wedge. One or more additional long irons, such as those designatednumber 1 ornumber 2, and wedges, such as a lob wedge, a gap wedge, and a sand wedge, may optionally be included with the set. Each iron has a shaft length that usually decreases through the set as the loft for each club head increases from the long irons to the short irons. The overall weight of each club head increases through the set as the shaft length decreases from the long irons to the short irons. To properly ensure that each club has a similar feel or balance during a golf swing, a measurement known as “swingweight” is often used as a criterion to define the club head weight and the shaft length. Since each of the clubs within the set is typically designed to have the same swingweight value for each different lofted club head or given shaft length, the weight of the club head is confined to a particular range. - The length of the shaft, along with the club head loft, moment of inertia, and center of gravity location, impart various performance characteristics to the ball's launch conditions upon impact and dictate the golf ball's launch angle, spin rate, flight trajectory, and the distance the ball will travel. Flight distance generally increases with a decrease in loft angle. However, difficulty of use also increases with a decrease in loft angle.
- Iron-type golf clubs generally can be divided into three categories: blades and muscle backs, conventional cavity backs, and modem multi-material cavity backs. Blades are traditional clubs with a substantially uniform appearance from the sole to the top line, although there may be some tapering from sole to top line. Similarly, muscle backs are substantially uniform, but have extra material on the back thereof in the form of a rib that can be used to lower the club head center of gravity. A club head with a lower center of gravity than the ball center of gravity facilitates getting the golf ball airborne. Since blade and muscle back designs have a small sweet spot, which is a term that refers to the area of the face that results in a desirable golf shot upon striking a golf ball, these designs are relatively difficult to wield and are typically only used by skilled golfers. However, these designs allow the skilled golfer to work the ball and shape the golf shot as desired.
- Cavity backs are modern designs that move some of the club mass to the perimeter of the club by providing a hollow or cavity in the back of the club, opposite the striking face. This produces a more forgiving club with a larger sweet spot. Having a larger sweet spot increases the ease of use. The decrease in club head mass resulting from the cavity also allows the size of the club face to be increased, further enlarging the sweet spot. The perimeter weighting created by the cavity also increases the club's moment of inertia, which is a measurement of the club's resistance to torque, for example the torque resulting from an off-center hit. These clubs are easier to hit than blades and muscle backs, and are therefore usable by less-skilled and beginner golfers.
- Modern multi-material cavity backs are the latest attempt by golf club designers to make cavity backs more forgiving and easier to hit. Some of these designs replace certain areas of the club head, such as the striking face or sole, with a second material that can be either heavier or lighter than the first material. These designs can also contain deep undercuts, which stem from the rear cavity, or secondary cavities. By incorporating materials of varying densities or providing cavities and undercuts, mass can be freed up to increase the overall size of the club head, expand the sweet spot, enhance the moment of inertia, and/or optimize the club head center of gravity location. However, due to construction limitations or requirements, some of these designs inadvertently thicken the top portion of the club head. Still, these improvements make the multi-material cavity back design the easiest of all styles to hit, and are ideally suited for the less adroit or novice golfer.
- As mentioned above, producing a low center of gravity in a club head increases its playability. One of the ways to lower the center of gravity is to lower the face profile of the head. However, this produces a club head with a bad aesthetic appearance. Another method of reducing the club's center of gravity is to reduce the height of the hosel. However, there are disadvantages to reducing the hosel height, such as: reduced moment of inertia (since hosel mass is far away from the center of gravity), shaft-bonding concerns, and the inability to customize the club head via bending for loft/lie. In addition, many golfers dislike the appearance of a club head that has a very small hosel.
- The present invention relates to a golf club head having a body defining a front surface, a top line, a sole, a back, a heel, a toe, and a hosel. The top portion of the club head, preferably the top line, contains a recess therein located between the heel and the toe, and extending toward the sole. This recess removes material from the club head, allowing the opportunity to do one or more of the following: increase the size of the overall club head, expand the size of the club head sweet spot, lower the club head center of gravity, and/or produce a greater moment of inertia measured about a vertical or horizontal axis passing through the club head center of gravity. The golf club head of the present invention preferably is an iron-type, a utility-type, or a putter-type golf club head.
- An insert formed of a secondary material may be placed within the recess. The insert has a density that is less than the density of the club head body, and the insert preferably is a light-weight insert. This allows the mass removed by the recess to be replaced in more desirous locations on the club head, such as in the perimeter and/or toward the sole. The insert may contain one or more damping materials, such as a viscoelastic material, which have the added benefit of dissipating vibrations that may be created during the golf shot. The incorporation of this secondary material provides improved feel and improved weight distribution, enhancing performance of the club, while still maintaining an aesthetically pleasing overall head shape. The incorporation of this secondary material also improves wearing of the heads over time since the viscoelastic material covers the top-toe area of the club, which is primarily responsible for marks on the head due to club-to-club impacts as the clubs rest in a player's bag.
- Instead of a recess, an extension may be provided at the top portion of the club head where relatively high density metallic material has been removed. The insert is attached to the extension.
- The present invention is described with reference to the accompanying drawings, in which like reference characters reference like elements, and wherein:
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FIG. 1 is a top view of a golf club head of the present invention; -
FIG. 2 is a front view of the golf club head ofFIG. 1 ; -
FIG. 3 is a cross-sectional view of the golf club head ofFIG. 1 taken along lines 3-3; -
FIG. 4 is a cross-sectional view of the golf club head ofFIG. 1 , including an insert, taken along lines 3-3; -
FIG. 5 shows a first isometric view of the golf club head ofFIG. 1 ; -
FIG. 6 shows a second isometric view of the golf club head ofFIG. 1 ; -
FIG. 7 shows another golf club head of the present invention; -
FIG. 8 shows a cross-sectional view of the golf club head ofFIG. 7 taken along line 8-8; and -
FIG. 9 shows a cross-sectional view of another golf club head of the present invention. - Other than in the operating examples, or unless otherwise expressly specified, all of the numerical ranges, amounts, values, and percentages, such as those for amounts of materials, moments of inertias, center of gravity locations, and others in the following portion of the specification, may be read as if prefaced by the word “about” even though the term “about” may not expressly appear with the value, amount, or range. Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following description and claims are approximations that may vary depending upon the desired properties sought to be obtained by the present invention. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
- Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in any specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements. Furthermore, when numerical ranges of varying scope are set forth herein, it is contemplated that any combination of these values inclusive of the recited values may be used.
FIG. 1 is a top view of agolf club head 1 of the present invention, andFIG. 2 is a front view of thegolf club head 1. Thegolf club head 1 includes abody 10 defining afront surface 11, atop line 12, a sole 13, a back 14, aheel 15, atoe 16, and ahosel 17. The striking face of thefront surface 11, which preferably containsgrooves 18 therein, and the sole 13 may be unitary with thebody 10, or they may be separate bodies, such as inserts, coupled thereto. While theclub head 1 is illustrated as an iron-type golf club head, the present invention may also pertain to a utility-type golf club head or a putter-type club head. -
FIGS. 1 and 2 define a convenient coordinate system to assist in understanding the orientation of thegolf club head 1 and other terms discussed herein. An origin O is located at the intersection of the shaft centerline CLSH and the ground plane GP, which is defined at a predetermined angle from the shaft centerline CLSH, referred to as the lie angle LA, and tangent to the sole 13 at its lowest point. An X-axis is defined as a vector that is opposite in direction of the vector that is normal to theface 11 projected onto the ground plane GP. A Y-axis is defined as the vector perpendicular to the X-axis and directed toward thetoe 16. A Z-axis is defined as the cross product of the X-axis and the Y-axis. - The top portion of the
club head 1 contains arecess 20 therein, located between theheel 15 and thetoe 16 and extending toward the sole 13. Preferably, therecess 20 is located in thetop line 12 of theclub head 1 and extends along thetop line 12 from approximately 10% to approximately 95% of the top line length. The top line length LTL is defined as the distance along thetop line 12 from a point P1 to a point P2. Point P1 is defined as the intersection of thegolf club head 1 and a plane that is offset 0.2 inch (L1) from and parallel to a plane defined by the X-axis and the Z-axis tangent to thetoe 16 at the toe's furthest point from the origin O along the Y-axis. Point P2 is defined as the uppermost intersection of theclub head 1 and a plane that is parallel to the plane formed by the shaft centerline CLSH and the X-axis offset a distance of 0.3 inch (L2) in a direction closer to thetoe 16. Therecess 20 removes material from theclub head 1, which can be redistributed to other areas of theclub head 1 to do one or more of the following: increase the overall size of theclub head 1, expand the size of the club head sweet spot, reposition the club head center of gravity, and/or produce a greater moment of inertia (MOI) measured about either an axis parallel to the Y-axis or Z-axis passing through the club head center of gravity. Inertia is a property of matter by which a body remains at rest or in uniform motion unless acted upon by some external force. MOI is a measure of the resistance of a body to angular acceleration about a given axis, and is equal to the sum of the products of each element of mass in the body and the square of the element's distance from the axis. Thus, as the distance from the axis increases, the MOI increases, making the club more forgiving for off-center hits since less energy is lost during impact from club head twisting. Moving or rearranging mass to the club head perimeter enlarges the sweet spot and produces a more forgiving club. Moving as much mass as possible to the extreme outermost areas of theclub head 1, such as theheel 15, thetoe 16, or the sole 13, maximizes the opportunity to enlarge the sweet spot or produce a greater MOI. Therecess 20 preferably has a volume of approximately 0.001 in3 to approximately 0.2 in3. In relative terms, therecess 20 preferably has a volume that is from approximately 0.5% to approximately 10% of the volume of thebody 10. Therecess 20 preferably has a depth D from approximately 0.01 inch to approximately 0.25 inch, which may be a constant depth or a varying depth. - An
insert 30 may be positioned within therecess 20. Theinsert 30, which may be either a preformed insert or cast in place within therecess 20, may be configured to matingly correspond to therecess 20. That is, theinsert 30 may be formed and configured to match the contours of therecess 20 and to substantially fill therecess 20. Alternatively, theinsert 30 fills only a portion of therecess 20. Theinsert 30 has a density that is less than the density of theclub head body 10. Since the mass of theinsert 30 is less than the mass removed by therecess 20, the extra mass may be replaced in more desirous locations on theclub head 1. These locations may include, for example, the club head perimeter and/or the sole 13. Alternatively, no additional mass is added to theclub head 1; only therecess 20 and theinsert 30 are used to enhance the playing characteristics of the golf club. Theinsert 30 preferably has a density from approximately 0.5 g/cm3 to approximately 5 g/cm3, and is preferably less than the body density by at least 3 g/cm3. The net effect of creating therecess 20 and adding theinsert 30 lowers the club head center of gravity (CG1 inFIG. 4 ) at least 0.01 inch toward the sole 13, as compared to the center of gravity location of a club head without therecess 20 and the insert 30 (CG2 inFIG. 4 ). That is, thegolf club head 1 has a center of gravity located at least 0.01 inch from a center of gravity location for a substantially similar golf club head without therecess 20 and theinsert 30. More preferably, the club head center of gravity is lowered at least 0.025 inch toward the sole 13. Additionally, therecess 20 and theinsert 30 increase the club head MOI measured about an axis parallel to the Z-axis and passing through the center of gravity by at least 20 gm·in2. That is, theclub head 1 has an increase in MOI measured about a vertical axis passing through said center of gravity of at least 20 gm·in2 compared to a substantially similar golf club head without therecess 20 and theinsert 30. Thus, therecess 20 and insert 30 produce a more forgiving and playable golf club.FIGS. 5 and 6 show isometric views of thegolf club head 1. - The
insert 30 may contain one or more damping materials, which diminish vibrations in the club head, including vibrations generated during an off-center hit. Preferred damping materials include those materials known as thermoplastic or thermoset polymers, such as rubber, urethane, polyurethane, butadiene, polybutadiene, silicone, and combinations thereof. Energy is transferred from the club to the ball during impact. Some energy, however, is lost due to vibration of the head caused by the impact. These vibrations produce undesirable sensations in both feel and sound to the user. Because the viscoelastic damping material of theinsert 30 is in direct contact with the metal club head (the vibrating body), it serves to damp these vibrations, improving sound and feel. Typical hardness values for theinsert 30 may include from 80 Shore A to 50 Shore D. Typical densities for theinsert 30 may include from 1.2-2 g/cm3. -
FIG. 7 shows another exemplarygolf club head 2 of the present invention, andFIG. 8 shows a cross-sectional view of thegolf club head 2 taken along line 8-8. In this embodiment, material is removed from the metallic club head at thetop line 12. Instead of forming a recess at thetop line 12, however, athin protrusion 19 is provided. Metallic material has been removed from the top portion of the club head as described above, and athin extension 19 is left in place. Theinsert 30 has a groove corresponding to theprotrusion 19. Thus, the viscoelastic material can be fit onto theclub head body 10. Theinsert 30 is attached to the casting, for example, through the use of an epoxy. A fixture with a cavity that matches the outer perimeter shape of theclub head 1 should be used to hold the two pieces in place while the epoxy dries. A preferred width A for theprotrusion 19 is 0.06 in., thoughwider protrusions 19 may be used. This width ensures adequate structural integrity. Preferred heights for theprotrusion 19 include 0.06 in. to 0.25 in., though other heights may be used. - It is possible that there are variations in size of the metallic portions of the club heads 1, 2 caused during forming and polishing. These variations typically are larger than the variations in size due to molding viscoelastic materials of the
inserts 30. To aid in hiding any discrepancy between the two portions of the club head, agroove 32 may be formed in theinsert 30 the edges that are visible to the user once the two pieces have been put together. Thisgroove 32 may be created simultaneously with the rest of theinsert 30, or as a secondary step. The preferred width and depth of thegroove 32 are 1 mm or less. - In the illustrated example of
FIGS. 7 and 8 , theprotrusion 19 is formed in the center of thetop line 12. Alternatively, theprotrusion 19 can be formed towards or at the front of thetop line 12 or towards or at the rear of thetop line 12. The width B of the front portion of theinsert 30 may be zero, meaning theprotrusion 19 forms the top portion of theface 11. Alternatively, the width B may be, for example, 0.03 to 0.25 in. Similar to the width B, the width C of the rear portion of theinsert 30 may be zero, meaning theprotrusion 19 forms the top portion of the back 14. Alternatively, the width C may be, for example, 0.03 to 0.25 in. The height of theinsert 30, measured along the longest portion thereof, preferably may be from 0.03 to 0.3 in. - A body's center of gravity is determined by its weight distribution. Mass added or removed directly on the center of gravity will have no effect on the center of gravity's location. In contrast, mass added or removed far away from the center of gravity will have the greatest effect on moving the center of gravity. Removing mass from the highest areas of a club head will have the greatest effect on lowering the center of gravity. Adding the mass removed from the high areas to the bottom of the club head will further lower the center of gravity. The top line area and top-of-hosel area are the two highest vertical areas in relation to the ground plane on an iron-type head (when the head is at the address position). By removing the top line portion of the face from the casting and replacing it with a lightweight viscoelastic piece, anywhere from 20-50 grams are removed from the top of the head, depending upon the design of the viscoelastic piece. That weight is redistributed to the bottom portion of the club, lowering the center of gravity even further versus that same club head constructed entirely of a metallic material, such as steel.
- MOI is also a property that is affected by mass distribution. Bodies that have mass distributed far from the center of gravity have higher MOI's about their center of gravity than bodies that have mass concentrated near their center of gravity. Removing the mass from the top of the face lowers the MOI about the center of gravity with respect to certain axes. The axis of rotation that relates to an iron's forgiveness is rotation in the heel-toe direction about the center of gravity—an axis parallel to the Z-axis. A higher MOI about this axis indicates greater resistance to twisting on off-center hits and, thus, more forgiveness. By adding the mass removed from the
top line 12 back into the low-heel and low-toe areas of the club head, the reduction in MOI in the heel-toe direction due to removal of metallic material from thetop line 12 is minimized. - Table 1 shows a comparison of center of gravity locations and MOI's for a 6-iron having a
urethane insert 30 as shown inFIGS. 7 and 8 to a similar club head formed completely of steel. Note that the measurements presented in Table 1 do not include any weights that may be added to the club head. -
TABLE 1 6-iron with Urethane 6-iron with Top Line Steel Top Line Head mass 23.83 g 240.2 g Top Line mass 4.9 g 31.1 g Total mass 243.2 g 271.3 g CGx 1.355 in. 1.397 in. CGy 0.766 in. 0.862 in. CGz −0.478 in. −0.533 in. Ixx 541 g · cm2 740 g · cm2 Iyy 2588 g · cm2 2764 g · cm2 Izz 2832 g · cm2 3110 g · cm2 k 1.173 in. 1.175 in. CGx, CGy, and CGz are the x-, y-, and z-components of the center of gravity location, respectively. Ixx, Iyy, and Izz are the MOI's about the x-, y-, and z-axes, respectively. k is the spring constant. - Use of the
insert 30 pictured inFIGS. 7 and 8 has the added benefit of increasing the durability of theclub head 2. Over the course of play, clubs carried together in a bag are knocked together. These impacts create marks on the club heads. The top-toe portion of the club is an area that is likely to impact with other clubs. By making that area out of a softer material, the likelihood of creating marks on the head due to club-to-club impacts is reduced. -
FIG. 9 shows a cross-sectional view of anothergolf club head 3 of the present invention with the toe portion removed. In this embodiment, metallic material has also been removed from thetop line 12 and replaced with a light-weight viscoelastic insert 30. Aprotrusion 19 is also provided in thisclub head 3, but unlike the previously discussedclub head 2 it is directed backward away from theface 11. Theinsert 30 contains a groove corresponding to theprotrusion 19. Attachment is facilitated through theprotrusion 19 and groove. The metallic face material extends to the upper most portion of theface 11 at thetop line 12. Alternatively, the viscoelastic material may extend down the top portion of theface 11, for example, up to 0.3 in. - While the preferred embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not of limitation. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention. Thus the present invention should not be limited by the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.
Claims (27)
1-12. (canceled)
13. A golf club head comprising:
a body formed of a first material and having a front surface, a sole, a back, a heel, a toe, and a top;
a protrusion extending away from the body at the top, wherein the protrusion is directed backwards and away from the face when the club head is at address; and
an insert formed of a second material and coupled to the protrusion.
14. The golf club head of claim 13 , wherein the protrusion is located near, and substantially parallel to, a top line of the club head.
15. The golf club head of claim 13 , wherein the first material has a first density and the second material has a second density that is less than the first density.
16. The golf club head of claim 15 , wherein the first density is greater than the second density by at least 3 grams per cubic centimeter.
17. The golf club head of claim 15 , wherein the second density is within a range from about 0.5 grams per cubic centimeter to about 5 grams per cubic centimeter.
18. The golf club head of claim 13 , wherein the second material is a vibration damping material.
19. The golf club head of claim 13 , wherein the first material extends to the upper-most portion of the face when the club head is at address.
20. The golf club head of claim 13 , wherein a moment of inertia—measured about a vertical axis passing through a center of gravity of the club head when the club head is at address—is at least 20 gm·in2 greater than a similarly-measured moment of inertia of a substantially similar golf club head in which the second material is replaced with the first material.
21. The golf club head of claim 13 , wherein:
the body has a first volume;
the insert has a second volume; and
the second volume is from 0.5% to 10% of the first volume.
22. An iron-type golf club head comprising:
a body made with a first material and defining a front portion, a top portion, a sole portion, a heel portion, a toe portion, and a hosel, the body comprising an extension at the top portion and extending backwards from the club head; and
an insert made with a second material and attached to the extension.
23. The club head of claim 22 , wherein the insert comprises a groove and is attached to the body at an interface between the groove and the extension.
24. The club head of claim 22 , wherein the top portion and the insert cooperate to define a substantially smooth upper surface of the club head.
25. The club head of claim 22 , wherein the club head is a cavity-back iron style club head comprising a cavity in a back of the club head.
26. The club head of claim 25 , wherein the front portion has a first side providing a ball striking face and an opposed second side providing a wall of the cavity.
27. The club head of claim 25 , wherein the cavity is open to the back but otherwise substantially surrounded by the front portion, the sole portion, the heel portion, the toe portion, and the insert.
28. The club head of claim 25 , wherein the second material is less dense than the first material.
29. The club head of claim 25 , wherein the insert makes contact with the body along an upper strip that is above the extension member and a lower strip that is below the extension member when the club head is at address.
30. The club head of claim 25 , wherein the insert extends along the top portion from the heel portion to the toe portion.
31. The club head of claim 30 , wherein the insert wraps around and substantially conceals the extension member.
32. The club head of claim 31 , wherein the first material extends to the upper most portion a face of the club head at a top line of the club head.
33. The club head of claim 32 , wherein the second material meets the first material substantially along the top line.
34. A cavity-backed iron-type golf club head comprising:
a body comprising a front portion, a top portion, a sole portion, a heel portion, a toe portion, a hosel, and a projection jutting back from the top portion; and
a low density insert covering at least a portion of the projection and cooperating with the heel portion, the toe portion and the sole portion to define a cavity open to a back side of the club head.
35. The club head of claim 34 , wherein the low-density insert makes contact with the body above, along, and below the projection when the club head is at address.
36. The club head of claim 35 , wherein the a back surface of the front portion defines a wall of the cavity.
37. The club head of claim 36 , wherein an edge of the insert is adjacent an edge of the top portion along a top line of the club head.
38. The club head of claim 34 , wherein:
the low density insert extends along the top portion from the heel portion to the toe portion and makes contact with the top portion above and below the projection, and
the club head comprises a cavity that is open to a back of the club head but otherwise substantially surrounded by the front portion, the sole portion, the heel portion, the toe portion, and the low density insert,.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/904,585 US20140018183A1 (en) | 2004-05-12 | 2013-05-29 | Golf club head with top line insert |
US14/584,515 US9421436B2 (en) | 2004-05-12 | 2014-12-29 | Golf club head with top line insert |
US15/144,152 US9669271B2 (en) | 2004-05-12 | 2016-05-02 | Golf club head with top line insert |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/843,622 US7481718B2 (en) | 2004-05-12 | 2004-05-12 | Golf club head with top line insert |
US11/266,180 US8480506B2 (en) | 2004-05-12 | 2005-11-04 | Golf club head with top line insert |
US13/904,585 US20140018183A1 (en) | 2004-05-12 | 2013-05-29 | Golf club head with top line insert |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/266,180 Continuation US8480506B2 (en) | 2004-05-12 | 2005-11-04 | Golf club head with top line insert |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/843,622 Continuation US7481718B2 (en) | 2004-05-12 | 2004-05-12 | Golf club head with top line insert |
US14/584,515 Continuation US9421436B2 (en) | 2004-05-12 | 2014-12-29 | Golf club head with top line insert |
Publications (1)
Publication Number | Publication Date |
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US20140018183A1 true US20140018183A1 (en) | 2014-01-16 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/266,180 Active 2029-08-25 US8480506B2 (en) | 2004-05-12 | 2005-11-04 | Golf club head with top line insert |
US13/904,585 Abandoned US20140018183A1 (en) | 2004-05-12 | 2013-05-29 | Golf club head with top line insert |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/266,180 Active 2029-08-25 US8480506B2 (en) | 2004-05-12 | 2005-11-04 | Golf club head with top line insert |
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US (2) | US8480506B2 (en) |
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US8939848B2 (en) | 2004-05-12 | 2015-01-27 | Cobra Golf Incorporated | Golf club head with top line insert |
US8088022B2 (en) * | 2004-05-12 | 2012-01-03 | Cobra Golf Incorporated | Golf club head with top line insert |
US7588503B2 (en) | 2004-05-12 | 2009-09-15 | Acushnet Company | Multi-piece golf club head with improved inertia |
US8480506B2 (en) * | 2004-05-12 | 2013-07-09 | Cobra Gold Incorporated | Golf club head with top line insert |
US7938737B2 (en) * | 2004-05-12 | 2011-05-10 | Cobra Golf Incorporated | Golf club head with top line insert |
US7153219B2 (en) * | 2004-06-14 | 2006-12-26 | Adams Golf Ip, L.P. | Golf club head |
US9352198B2 (en) | 2006-07-21 | 2016-05-31 | Cobra Golf Incorporated | Multi-material golf club head |
US9586104B2 (en) | 2006-07-21 | 2017-03-07 | Cobra Golf Incorporated | Multi-material golf club head |
US7621822B2 (en) * | 2006-09-01 | 2009-11-24 | Acushnet Company | Iron golf club with improved mass properties and vibration damping |
US8951144B2 (en) | 2006-09-01 | 2015-02-10 | Cobra Golf Incorporated | Colorized damping indicators for customized golf club heads |
US7811180B2 (en) * | 2006-09-25 | 2010-10-12 | Cobra Golf, Inc. | Multi-metal golf clubs |
US10086238B1 (en) | 2006-09-25 | 2018-10-02 | Cobra Golf Incorporated | Multi-component golf club head having a hollow body face |
US20090011852A1 (en) * | 2007-07-05 | 2009-01-08 | Karsten Manufacturing Corporation | Grooves with Multiple Channels and Methods to Manufacture Grooves of a Golf Club Head |
US11465018B2 (en) * | 2007-07-25 | 2022-10-11 | Karsten Manufacturing Corporation | Club head sets with varying characteristics and related methods |
US8523706B2 (en) * | 2009-06-10 | 2013-09-03 | Karsten Manufacturing Corporation | Golf club head having a hollow rail member |
JP5872847B2 (en) | 2011-10-27 | 2016-03-01 | ブリヂストンスポーツ株式会社 | Golf club head |
US10493336B2 (en) * | 2014-12-31 | 2019-12-03 | Taylor Made Golf Company, Inc. | Iron-type golf club head |
US10137339B1 (en) * | 2017-12-29 | 2018-11-27 | Acushnet Company | Golf club having removable face |
US11400351B2 (en) | 2019-05-10 | 2022-08-02 | Taylor Made Golf Company, Inc. | Golf club |
US11351429B2 (en) | 2019-05-10 | 2022-06-07 | Taylor Made Golf Company, Inc. | Golf club |
US11413510B2 (en) | 2019-05-10 | 2022-08-16 | Taylor Made Golf Company, Inc. | Golf club |
US11458374B2 (en) | 2019-05-10 | 2022-10-04 | Taylor Made Golf Company, Inc. | Golf club |
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Also Published As
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US20060052184A1 (en) | 2006-03-09 |
US8480506B2 (en) | 2013-07-09 |
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Owner name: COBRA GOLF INCORPORATED, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SORACCO, PETER L.;ROACH, RYAN L.;REEL/FRAME:031016/0758 Effective date: 20130606 |
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