US20040087388A1 - Golf club head providing enhanced acoustics - Google Patents
Golf club head providing enhanced acoustics Download PDFInfo
- Publication number
- US20040087388A1 US20040087388A1 US10/285,842 US28584202A US2004087388A1 US 20040087388 A1 US20040087388 A1 US 20040087388A1 US 28584202 A US28584202 A US 28584202A US 2004087388 A1 US2004087388 A1 US 2004087388A1
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- United States
- Prior art keywords
- club head
- golf club
- heel region
- region
- crown
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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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
- A63B53/0466—Heads wood-type
-
- 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
- A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
-
- 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
- A63B53/0433—Heads with special sole configurations
-
- 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
- A63B60/002—Resonance frequency related characteristics
-
- 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
- A63B2053/0491—Heads with added weights, e.g. changeable, replaceable
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
- A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
- A63B2071/0625—Emitting sound, noise or music
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
- A63B2209/023—Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
-
- 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
- A63B53/0408—Heads characterised by specific dimensions, e.g. thickness
- A63B53/0412—Volume
-
- 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
-
- 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
-
- 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
- A63B53/045—Strengthening ribs
Definitions
- the invention relates generally to golf club heads and, more particularly, to hollow golf club heads having a volume of at least 100 cc.
- driver and fairway wood golf club heads are typically formed of steel or titanium alloys.
- oversize driver heads exceeding 300 cc in volume, are commonly formed of a titanium alloy such as Ti 6Al-4V.
- Ti 6Al-4V a titanium alloy
- Many golfers particularly enjoy the aural and tactile feedback upon impact with a golf ball of club heads made of this lightweight yet strong alloy.
- Recent advances in club head design and materials have improved club performance, e.g., higher coefficient-of-restitution (COR), however, the resultant acoustic properties and vibrational responses can vary considerably from traditional club heads.
- COR coefficient-of-restitution
- the present invention provides a golf club head having enhanced sound and feel characteristics and a high COR.
- the club head has a hollow main body including a ball-striking face, a sole, a crown, a hosel, and a side portion extending rearwardly from the face.
- the body further includes a heel region adjacent to the hosel and a toe region opposing the heel region, and it defines a volume of at least 100 cc.
- the club head further includes a stiffening member disposed within the body and attached to both the sole and the crown. The member is spaced apart from the striking face and is configured to form a local stiffness zone within the body thereby affecting vibration modes and acoustic properties of the club head.
- all portions of the member are closer to a rearmost point of the body than to a center point of the face.
- the member is planar and is attached at the heel region, extending less than half the distance from the heel region to the toe region.
- the member is preferably vertically disposed between the crown and the sole and is oriented a prescribed angle relative to the face.
- the member may comprise other shapes and may be connected along its second side end at the side portion. Preferably, the member is less than 2 mm thick and is more preferably about 1 mm thick. Other elements may be attached to the club head, as desired, and the member may be used to alter the sound producing modes of the club head.
- a method of forming an oversize club head with an enhanced acoustic quality comprises forming a body, preferably of one or more titanium or steel alloys, and providing a stiffening member disposed within the body and attached to both the sole and the crown.
- the member is spaced apart from the striking face and is configured to form a local stiffness zone within the body thereby affecting vibration modes and acoustic properties of the club head.
- Casting or other methods known to those skilled in the art may be performed to form two or more portions of the body, and the face, sole and/or crown may be separately formed and attached.
- the member may be integrally cast with the portions of the body, or it may be welded to the inner surfaces of the body in a later manufacturing step. Additional elements may be attached or co-formed with the body, as desired.
- the member may comprise a planar, solid element, it may alternatively include cutouts along one or more of its sides, and/or it may include one or more openings.
- the reduction in mass of the member due to the cutouts and/or openings is such that the local stiffening properties of the club head are still achieved.
- FIG. 1 is a front perspective view of a partially assembled club head in accordance with the invention, having a striking plate removed from the front of the club head and showing a stiffening member within the cavity.
- FIG. 1A is a cross-sectional view of the stiffening member, depicting the stiffening member extending between a top portion and bottom portion of the club head of FIG. 1.
- FIG. 2 is a top cross-sectional view of the club head of FIG. 1 taken along line A-A, depicting the orientation of the stiffening member.
- FIG. 3 is a top cross-sectional view similar to FIG. 2 of a second preferred embodiment of a club head in accordance with the invention.
- FIG. 4 is a top cross-sectional view similar to FIG. 2 of a third preferred embodiment of a club head in accordance with the invention.
- FIG. 5 is a side cross-sectional view similar to one taken along line B-B of FIG. 2 of a fourth preferred embodiment a club head in accordance with the invention, depicting a removable weight and a stiffening member adjacent thereto.
- FIG. 6 is a side cross-sectional view similar to FIG. 5 of a fifth preferred embodiment of a club head in accordance with the invention, depicting a weight pad and a stiffening member oriented toward and spaced apart from the striking face.
- FIG. 7 is a side cross-sectional view similar to FIG. 5 of a sixth preferred embodiment of a club head in accordance with the invention, depicting another preferred configuration of the stiffening member.
- FIG. 8 is a side cross-sectional view similar to FIG. 5 of a seventh preferred embodiment of a club head in accordance with the invention, depicting yet another preferred configuration of the stiffening member.
- FIG. 9 is a side cross-sectional view similar to FIG. 5 of an eighth preferred embodiment of a club head in accordance with the invention, depicting yet another preferred configuration of the stiffening member.
- a club head 10 having a member 12 for stiffening a hosel region 14 of an interior 16 of the club head.
- the hosel is configured to receive a shaft (not shown) of the club.
- the member is spaced apart from a striking plate 18 (FIG. 2) located at a front portion 20 of the club head.
- a body 24 of the club head is cast having an opening 26 at the front portion to which the striking plate is later welded.
- the preferred materials for the club head include titanium alloys, such as Ti 6Al-4V, and may be alpha, alpha-beta or beta type alloys.
- the club head may be formed of steel alloys such as Carpenter Custom 450® and/or Custom 455® stainless steel.
- the hosel 14 includes an opening 28 for the insertion of a tip end of a club shaft (not shown) and an axis 30 is defined corresponding to the central axis of the shaft.
- the club has toe region 32 spaced apart from the hosel and a heel region 34 adjacent to the hosel.
- a width W of the club head is measured between a point P 1 at a toe region 32 and a heel region 34 .
- a depth D of the club head is measured from a center point C of the striking plate to a rearmost point P 2 .
- the member may be integrally formed with the portions of the club head using known casting methods, or alternatively the member may be welded to inner surfaces of a crown 42 , side portion 44 and sole 46 of the club head.
- the member may be of a metallic material that is forged, cast, stamped or otherwise shaped for use; or it may be of a non-metallic material, such as from a polymer, plies of fiber-reinforced resin, and the like.
- the member is planar and of a constant thickness t r of less than 2 mm. More preferably, the member has a thickness of about 1 mm, which is sufficient to modify the vibrational modes of the club head.
- the member may have a non-constant thickness or a thickness approximately the same as one of the portions connected to the member, ranging from about 0.7 mm to 3 mm.
- the member may be a solid piece or have one or more openings forming a truss-like structure, as desired. The overall stiffness of the member relative to the adjacent portions of the club head should be sufficient to provide the desired vibration mode modifications.
- FIGS. 2 and 3 show different orientations of the member 12 at the hosel region.
- the member is at an angle ⁇ about 45 degrees relative to a vertical plane containing a point on the axis 30 and a horizontal line 31 that is substantially parallel to the striking plate.
- the member may be formed as in FIG. 3 at an angle ⁇ that is at about 90 degrees relative to a substantially vertical plane that is tangent to the side portion 44 at the junction with the member.
- the member extends a distance W 1 , W 2 that is less than half the distance W from the heel region 34 to the toe region 32 , and preferably the member extends less than one-third the distance W.
- FIG. 4 Another preferred embodiment of the present invention is shown in FIG. 4, and it includes a recess 48 at a rear region 50 of the body that contains a weight element 52 .
- the weight element may comprise a metal or polymeric material, or a combination thereof
- a member 100 substantially alters the modes involving the weight element 52 by utilizing a curved shape to minimize the interior space encompassed by the member.
- the member 100 extends a distance d that is less than half the distance D from the rearmost point P 2 to the striking plate 18 .
- the hosel region 14 of FIGS. 1 - 3 and 6 and the rear region 50 of FIGS. 4 and 5 each comprise a local stiffness zone 54 , 154 that is defined by the member 12 , 100 and the crown 42 , sole 46 and side portion 44 of the body of the club head.
- the local stiffness zone 54 is open between the hosel opening and the remainder of the cavity at the unconnected side end 22 of the member 12 .
- the local stiffness zone 154 encompasses the weight element 52 and all of the ends 22 , 36 , 38 , 40 of the member 100 are connected to the body 24 .
- the weight element 52 comprise a polymeric housing 60 with a metal rod 62 contained therein.
- a lightweight crown is attached to an opening 66 at the top of the club head.
- the body may comprise a cast portion including the sole 46 and side portion 44 , with openings 66 , 26 formed in the top and front, respectively, to receive the separately formed crown 64 and striking plate 18 , respectively.
- the member 100 is shown to be substantially straight in a vertical direction, it is understood that a more curved shape may be used to further minimize the local stiffness zone encompassed by the member.
- the member 100 may be cast with a portion of the body, such as the sole 46 , with a top end 136 later attached to the crown 64 through the opening 26 at the front of the club head.
- FIG. 6 shows another embodiment having a member at the hosel region, wherein both the striking plate 18 and a sole plate 146 are separately formed and attached to appropriate openings formed in the club head.
- the body may comprise a cast portion including the crown 42 and side portion 44 , with the member 12 integrally formed with the crown 42 and side portion 44 along its ends 36 , 40 .
- the bottom end 38 of the member may be attached to the sole plate 146 , such as by welding, through the opening at the front of the club head.
- one or more additional elements such as a metallic weight 70 may be attached to an inner surface of the body prior to attachment of the sole and/or striking plate.
- the present invention further comprises a method of enhancing the acoustic quality of a golf club head having a volume of at least 100 cc, preferably at least 110 cc and more preferably at least 150 cc.
- the method includes the steps of:
- the body has heel, toe and rear regions.
- the member is located within the body either heelward or rearward.
- the member is connected to at least the top and bottom portions, and the local stiffness zone substantially alters the vibration modes of the head.
- the member is also connected to the side portion along at least one side end of the member.
- the completion of the step of forming the body may be performed after the member is connected therein. That is, the top, front and/or bottom portions of the club head may be attached after the member is provided to define the local stiffness zone. Additional elements, such as a weight, may also be provided in the club head prior to completion of the step of forming the body.
- the member 110 , 110 ′ and 110 ′′ may be other than a solid piece.
- One or more openings 112 may be formed in the member.
- One or more cutouts 114 may be included along any/all of the top, bottom and side ends of the member. The inclusion of one or more of the openings and/or cutouts provides a reduction in mass for the member that may be desirable, as long as the stiffening properties of the member are maintained.
Abstract
An golf club head is provided, having enhanced sound and feel characteristics. The club head has a hollow main body including a ball-striking face, a sole, a crown, a hosel, and a side portion extending rearwardly from the face. The body further includes a heel region adjacent to the hosel and a toe region opposing the heel region, and it defines a volume of at least 100 cc. The club head further includes a stiffening member disposed within the body and attached to both the sole and the crown. The member is spaced apart from the striking face and disposed within the body in a region having a first zone extending less than half the distance from the heel region to the toe region and a second zone extending less than half the distance from a rearmost point, thereby forming a local stiffness zone in the body to influence vibration modes and acoustic properties of the club head in a prescribed manner.
Description
- The invention relates generally to golf club heads and, more particularly, to hollow golf club heads having a volume of at least 100 cc.
- Traditional driver and fairway wood golf club heads are typically formed of steel or titanium alloys. For example, oversize driver heads, exceeding 300 cc in volume, are commonly formed of a titanium alloy such as Ti 6Al-4V. Many golfers particularly enjoy the aural and tactile feedback upon impact with a golf ball of club heads made of this lightweight yet strong alloy. Recent advances in club head design and materials have improved club performance, e.g., higher coefficient-of-restitution (COR), however, the resultant acoustic properties and vibrational responses can vary considerably from traditional club heads.
- Although such clubs may provide improved performance, many golfers dislike the aural and tactile feedback they provide. As a result, some golfers continue to prefer traditional clubs. Attempts have been made to provide club heads to correct the acoustic properties and vibrational responses of modern clubs, often to the sacrifice of performance.
- It should, therefore, be appreciated that there is a need for a golf club head having a high COR and improved acoustic and tactile feedback. The present invention fulfills this need and others.
- The present invention provides a golf club head having enhanced sound and feel characteristics and a high COR. The club head has a hollow main body including a ball-striking face, a sole, a crown, a hosel, and a side portion extending rearwardly from the face. The body further includes a heel region adjacent to the hosel and a toe region opposing the heel region, and it defines a volume of at least 100 cc. The club head further includes a stiffening member disposed within the body and attached to both the sole and the crown. The member is spaced apart from the striking face and is configured to form a local stiffness zone within the body thereby affecting vibration modes and acoustic properties of the club head.
- In a preferred embodiment of the invention, all portions of the member are closer to a rearmost point of the body than to a center point of the face.
- In another preferred embodiment of the invention, the member is planar and is attached at the heel region, extending less than half the distance from the heel region to the toe region. The member is preferably vertically disposed between the crown and the sole and is oriented a prescribed angle relative to the face.
- The member may comprise other shapes and may be connected along its second side end at the side portion. Preferably, the member is less than 2 mm thick and is more preferably about 1 mm thick. Other elements may be attached to the club head, as desired, and the member may be used to alter the sound producing modes of the club head.
- A method of forming an oversize club head with an enhanced acoustic quality comprises forming a body, preferably of one or more titanium or steel alloys, and providing a stiffening member disposed within the body and attached to both the sole and the crown. The member is spaced apart from the striking face and is configured to form a local stiffness zone within the body thereby affecting vibration modes and acoustic properties of the club head. Casting or other methods known to those skilled in the art may be performed to form two or more portions of the body, and the face, sole and/or crown may be separately formed and attached. The member may be integrally cast with the portions of the body, or it may be welded to the inner surfaces of the body in a later manufacturing step. Additional elements may be attached or co-formed with the body, as desired.
- Although the member may comprise a planar, solid element, it may alternatively include cutouts along one or more of its sides, and/or it may include one or more openings. The reduction in mass of the member due to the cutouts and/or openings is such that the local stiffening properties of the club head are still achieved.
- For purposes of summarizing the invention and the advantages achieved over the prior art, certain advantages of the invention have been described herein above. Of course, it is to be understood that not necessarily all such advantages may be achieved in accordance with any particular embodiment of the invention. Thus, for example, those skilled in the art will recognize that the invention may be embodied or carried out in a manner that achieves or optimizes one advantage or group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein.
- All of these embodiments are intended to be within the scope of the invention herein disclosed. These and other embodiments of the present invention will become readily apparent to those skilled in the art from the following detailed description of the preferred embodiments having reference to the attached figures, the invention not being limited to any particular preferred embodiment(s) disclosed.
- Embodiments of the present invention will now be described, by way of example only, with reference to the following drawings in which:
- FIG. 1 is a front perspective view of a partially assembled club head in accordance with the invention, having a striking plate removed from the front of the club head and showing a stiffening member within the cavity.
- FIG. 1A is a cross-sectional view of the stiffening member, depicting the stiffening member extending between a top portion and bottom portion of the club head of FIG. 1.
- FIG. 2 is a top cross-sectional view of the club head of FIG. 1 taken along line A-A, depicting the orientation of the stiffening member.
- FIG. 3 is a top cross-sectional view similar to FIG. 2 of a second preferred embodiment of a club head in accordance with the invention.
- FIG. 4 is a top cross-sectional view similar to FIG. 2 of a third preferred embodiment of a club head in accordance with the invention.
- FIG. 5 is a side cross-sectional view similar to one taken along line B-B of FIG. 2 of a fourth preferred embodiment a club head in accordance with the invention, depicting a removable weight and a stiffening member adjacent thereto.
- FIG. 6 is a side cross-sectional view similar to FIG. 5 of a fifth preferred embodiment of a club head in accordance with the invention, depicting a weight pad and a stiffening member oriented toward and spaced apart from the striking face.
- FIG. 7 is a side cross-sectional view similar to FIG. 5 of a sixth preferred embodiment of a club head in accordance with the invention, depicting another preferred configuration of the stiffening member.
- FIG. 8 is a side cross-sectional view similar to FIG. 5 of a seventh preferred embodiment of a club head in accordance with the invention, depicting yet another preferred configuration of the stiffening member.
- FIG. 9 is a side cross-sectional view similar to FIG. 5 of an eighth preferred embodiment of a club head in accordance with the invention, depicting yet another preferred configuration of the stiffening member.
- With reference to the illustrative drawings, and particularly to FIGS. 1 and 1A, there is shown a
club head 10 having amember 12 for stiffening ahosel region 14 of aninterior 16 of the club head. The hosel is configured to receive a shaft (not shown) of the club. The member is spaced apart from a striking plate 18 (FIG. 2) located at afront portion 20 of the club head. In a preferred method of construction, abody 24 of the club head is cast having an opening 26 at the front portion to which the striking plate is later welded. - The preferred materials for the club head include titanium alloys, such as Ti 6Al-4V, and may be alpha, alpha-beta or beta type alloys. Alternatively, the club head may be formed of steel alloys such as Carpenter Custom 450® and/or Custom 455® stainless steel.
- The
hosel 14 includes an opening 28 for the insertion of a tip end of a club shaft (not shown) and anaxis 30 is defined corresponding to the central axis of the shaft. The club hastoe region 32 spaced apart from the hosel and aheel region 34 adjacent to the hosel. A width W of the club head is measured between a point P1 at atoe region 32 and aheel region 34. A depth D of the club head is measured from a center point C of the striking plate to a rearmost point P2. - Referring to FIG. 1A, the connection of top and
bottom ends rear side end 40 of the member is shown. The member may be integrally formed with the portions of the club head using known casting methods, or alternatively the member may be welded to inner surfaces of acrown 42,side portion 44 and sole 46 of the club head. The member may be of a metallic material that is forged, cast, stamped or otherwise shaped for use; or it may be of a non-metallic material, such as from a polymer, plies of fiber-reinforced resin, and the like. - Preferably, the member is planar and of a constant thickness tr of less than 2 mm. More preferably, the member has a thickness of about 1 mm, which is sufficient to modify the vibrational modes of the club head. Alternatively, the member may have a non-constant thickness or a thickness approximately the same as one of the portions connected to the member, ranging from about 0.7 mm to 3 mm. In addition, the member may be a solid piece or have one or more openings forming a truss-like structure, as desired. The overall stiffness of the member relative to the adjacent portions of the club head should be sufficient to provide the desired vibration mode modifications.
- FIGS. 2 and 3 show different orientations of the
member 12 at the hosel region. In FIG. 2 the member is at an angle θ about 45 degrees relative to a vertical plane containing a point on theaxis 30 and ahorizontal line 31 that is substantially parallel to the striking plate. Alternatively, the member may be formed as in FIG. 3 at an angle φ that is at about 90 degrees relative to a substantially vertical plane that is tangent to theside portion 44 at the junction with the member. In both embodiments the member extends a distance W1, W2 that is less than half the distance W from theheel region 34 to thetoe region 32, and preferably the member extends less than one-third the distance W. - Another preferred embodiment of the present invention is shown in FIG. 4, and it includes a
recess 48 at arear region 50 of the body that contains aweight element 52. The weight element may comprise a metal or polymeric material, or a combination thereof Amember 100 substantially alters the modes involving theweight element 52 by utilizing a curved shape to minimize the interior space encompassed by the member. Themember 100 extends a distance d that is less than half the distance D from the rearmost point P2 to thestriking plate 18. - The
hosel region 14 of FIGS. 1-3 and 6 and therear region 50 of FIGS. 4 and 5 each comprise alocal stiffness zone member crown 42, sole 46 andside portion 44 of the body of the club head. In the former, thelocal stiffness zone 54 is open between the hosel opening and the remainder of the cavity at the unconnected side end 22 of themember 12. In the latter, thelocal stiffness zone 154 encompasses theweight element 52 and all of theends member 100 are connected to thebody 24. - Referring in detail to FIG. 5, an alternative embodiment is shown having the
weight element 52 comprise apolymeric housing 60 with ametal rod 62 contained therein. In addition, a lightweight crown is attached to anopening 66 at the top of the club head. In this construction, the body may comprise a cast portion including the sole 46 andside portion 44, withopenings crown 64 andstriking plate 18, respectively. Although themember 100 is shown to be substantially straight in a vertical direction, it is understood that a more curved shape may be used to further minimize the local stiffness zone encompassed by the member. Themember 100 may be cast with a portion of the body, such as the sole 46, with atop end 136 later attached to thecrown 64 through theopening 26 at the front of the club head. - FIG. 6 shows another embodiment having a member at the hosel region, wherein both the
striking plate 18 and a sole plate 146 are separately formed and attached to appropriate openings formed in the club head. (The attachment is shown in dashed lines.) In this construction, the body may comprise a cast portion including thecrown 42 andside portion 44, with themember 12 integrally formed with thecrown 42 andside portion 44 along its ends 36, 40. Thebottom end 38 of the member may be attached to the sole plate 146, such as by welding, through the opening at the front of the club head. Alternatively, one or more additional elements such as ametallic weight 70 may be attached to an inner surface of the body prior to attachment of the sole and/or striking plate. - The present invention further comprises a method of enhancing the acoustic quality of a golf club head having a volume of at least 100 cc, preferably at least 110 cc and more preferably at least 150 cc. The method includes the steps of:
- forming a body having top, front, side and bottom portions to define a cavity;
- and providing a member to define a local stiffness zone within the cavity.
- The body has heel, toe and rear regions. The member is located within the body either heelward or rearward. The member is connected to at least the top and bottom portions, and the local stiffness zone substantially alters the vibration modes of the head. Preferably, the member is also connected to the side portion along at least one side end of the member. The completion of the step of forming the body may be performed after the member is connected therein. That is, the top, front and/or bottom portions of the club head may be attached after the member is provided to define the local stiffness zone. Additional elements, such as a weight, may also be provided in the club head prior to completion of the step of forming the body.
- As shown in FIGS.7-9, the
member more openings 112 may be formed in the member. One or more cutouts 114 may be included along any/all of the top, bottom and side ends of the member. The inclusion of one or more of the openings and/or cutouts provides a reduction in mass for the member that may be desirable, as long as the stiffening properties of the member are maintained. - Although the invention has been disclosed in detail with reference only to the preferred embodiments, those skilled in the art will appreciate that additional golf club heads can be made without departing from the scope of the invention. Accordingly, the invention is defined only by the claims set forth below.
Claims (25)
1. A golf club head, comprising:
a hollow main body including a ball-striking face, a sole, a crown, a hosel, and a side portion extending rearwardly from the face, the body further including a heel region adjacent to the hosel and a toe region opposing the heel region, wherein the body defines a volume of at least 100 cc; and
a stiffening member attached to both the sole and the crown, spaced apart from the striking face, and disposed within the body in a region having a first zone extending less than half the distance from the heel region to the toe region and a second zone extending less than half the distance from a rearmost point; wherein the member is configured to form a local stiffness zone in the body to influence vibration modes and acoustic properties of the club head in a prescribed manner.
2. A golf club head as defined in claim 1 , wherein the body has a volume of at least 150 cc and is formed of one or more titanium alloys.
3. A golf club head as defined in claim 1 , wherein the body is formed of one or more steel alloys.
4. A golf club head as defined in claim 1 , wherein the member is substantially the same thickness as a section of the heel region adjacent to the member.
5. A golf club head as defined in claim 1 , wherein the member is a solid piece.
6. A golf club head as defined in claim 1 , wherein the member has at least one opening formed therein.
7. A golf club head as defined in claim 1 , wherein all portions of the member are closer to a rearmost point of the body than to a center point of the face.
8. A golf club head as defined in claim 1 , wherein the member is less than 2 mm thick.
9. A golf club head as defined in claim 8 , wherein the member is about 1 mm thick.
10. A golf club head as defined in claim 1 , wherein the member is attached at the heel region and extends less than half the distance from the heel region to the toe region.
11. A golf club head as defined in claim 10 , wherein the member is planar and is angled about 45 degrees relative to the striking face.
12. A golf club head as defined in claim 10 , wherein the member is planar and is substantially normal to a vertical, tangential plane of the heel region at the junction the member.
13. A golf club head as defined in claim 1 , further comprising an additional element spaced apart from the face and attached to an inner surface of the body.
14. A golf club head as defined in claim 13 , wherein the member has two side ends connected to the body thereby isolating the additional element within the local stiffness zone.
15. A golf club head as defined in claim 13 , wherein the additional element comprises a weight member at least partly formed of a polymeric material.
16. A method of enhancing the acoustic quality of a golf club head, comprising the steps of:
forming a hollow main body including a ball-striking face, a sole, a crown, a hosel, and a side portion extending rearwardly from the face, the body having a heel region adjacent to the hosel and a toe region opposing the heel region, wherein the body defines a volume of at least 100 cc; and
providing a stiffening member attached to both the sole and the crown, spaced apart from the striking face, and disposed within the body in a region having a first zone extending less than half the distance from the heel region to the toe region and a second zone extending less than half the distance from a rearmost point; wherein the member is configured to form a local stiffness zone in the body to influence vibration modes and acoustic properties of the club head in a prescribed manner.
17. A method as defined in claim 16 , wherein the step of providing the member is performed by casting the member of a metallic material integrally with at least the side portion.
18. A method as defined in claim 16 , wherein the forming step further includes the steps of casting at least the top and side portions of a metallic material and welding the striking face to an opening at a front of the body.
19. A method as defined in claim 16 , wherein the forming step further includes the steps of casting at least the bottom and side portions of a metallic material and attaching the top portion to an opening at a top of the body.
20. A method as defined in claim 16 , wherein the step of providing the member is performed by welding the member to the top, side and bottom portions of the body.
21. A method as defined in claim 16 , further comprising the step of attaching an additional element to an inner surface of the body.
22. A method as defined in claim 16 , wherein the step of providing the member includes forming the member of a metallic material using one of forging, casting and stamping methods.
23. A method as defined in claim 16 , wherein the step of providing the member includes forming the member with at least one opening therein.
24. A method as defined in claim 16 , wherein the step of providing the member includes forming the member with at least one cutout along at least one end of the member
25. A method as defined in claim 16 , wherein the step of providing the member includes forming the member of a non-metallic material to have a stiffness at least as great as the material of the body of the club head.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/285,842 US20040087388A1 (en) | 2002-11-01 | 2002-11-01 | Golf club head providing enhanced acoustics |
US11/124,316 US7056228B2 (en) | 2002-11-01 | 2005-05-06 | Golf club head providing enhanced acoustics |
US11/447,684 US7247103B2 (en) | 2002-11-01 | 2006-06-05 | Golf club head providing enhanced acoustics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/285,842 US20040087388A1 (en) | 2002-11-01 | 2002-11-01 | Golf club head providing enhanced acoustics |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/124,316 Continuation US7056228B2 (en) | 2002-11-01 | 2005-05-06 | Golf club head providing enhanced acoustics |
Publications (1)
Publication Number | Publication Date |
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US20040087388A1 true US20040087388A1 (en) | 2004-05-06 |
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Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US10/285,842 Abandoned US20040087388A1 (en) | 2002-11-01 | 2002-11-01 | Golf club head providing enhanced acoustics |
US11/124,316 Expired - Lifetime US7056228B2 (en) | 2002-11-01 | 2005-05-06 | Golf club head providing enhanced acoustics |
US11/447,684 Expired - Lifetime US7247103B2 (en) | 2002-11-01 | 2006-06-05 | Golf club head providing enhanced acoustics |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
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US11/124,316 Expired - Lifetime US7056228B2 (en) | 2002-11-01 | 2005-05-06 | Golf club head providing enhanced acoustics |
US11/447,684 Expired - Lifetime US7247103B2 (en) | 2002-11-01 | 2006-06-05 | Golf club head providing enhanced acoustics |
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US (3) | US20040087388A1 (en) |
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Also Published As
Publication number | Publication date |
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US20070054753A1 (en) | 2007-03-08 |
US7247103B2 (en) | 2007-07-24 |
US20050192119A1 (en) | 2005-09-01 |
US7056228B2 (en) | 2006-06-06 |
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