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US1167387A - Golf-club and the like. - Google Patents

Golf-club and the like. Download PDF

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Publication number
US1167387A
US1167387A US1913798634A US1167387A US 1167387 A US1167387 A US 1167387A US 1913798634 A US1913798634 A US 1913798634A US 1167387 A US1167387 A US 1167387A
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Prior art keywords
socket
means
weight
member
weights
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Expired - Lifetime
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Percy Gordon Eckersley Daniel
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Percy Gordon Eckersley Daniel
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B53/0466Heads wood-type

Description

P. G. E. DANIEL.

GOLF CLUB AND THE LIKE.

APPLICATION FILED NOV. 1, 191a.

1916?,8? Patented Janll, 1916.

IINVENTOR' WWNES$E$ a, n c m $7.0 & 1

& a 7 K W MTUREYS PC! GORDON ECLEY DANIEL, 0F OLEVEDON, ENGLAND.

memes.

GOLF-CLUB AND THE $1.51".

specification of Letters resent. Patented Jan. M, 119W.

. I. Application filed November 1, 1913. Serial No. 798,886.

To all whom it may concern Be it known'that I PERCY GORDON EC-K- ERSLEY DANIEL, a subject of the King of Great Britain and Ireland, residing at Eekersle Clevedon, in the county of Somerset. En" and, have invented certain new and use ul Improvements in Golf-Clubs and the like, of which the following is a specification.

This invention relates to clubs, sticks and like implements for golf and other purposes wherein means are provided whereby the weight or balance or both of the club or the like may be varied to suit the requirements of the user.

The 0b]ect of the present invention is to provide eflectively for the accommodation of an adjustable weight or weights or a weight or weights of varying magnitude so that the efiective weight can be adjusted as required to effect a change of weight or balance of the club or the like, and especially to provide against any chance of the weight or weights shifting or shaking about when in use. I have found that especially in the case of golf clubs which of course suffer severe shocks when in use, a weight or weights may become loose unless very firmly held in place.

Reference will now be made to the accompanying drawings which illustrate the preferred mode of carrying the invention into effect in connection with the head of a golf club of the kind commonly used for drivin Figure 1 is a sectional view of the club head taken on the line 1-1 of Fig. 2. Fig. 2 is a rear view of the club head. Fig. 3 is a side view of the socket provided in the club head and with the cap removed. Fig. 4 is a sectional view of said socket taken on the line 4-4 of Fig. 3; Fig. 5 is a sectional view of the cap for the socket; Fig. 6 is a side view of a solid weight for use in the socket, that shown in Fig. 1 being hollow. Fig. 7 is an end view of the weight shown in Fig. 6; while Fig. 8 illustrates how the socket member may be attached to the end of the shaft of a golf club, or the like. Fig. 9 is a similar view to Fig. 1 but showing a modified form of weighting means.

In the drawings, a represents the club head which in the drawings is shown as an ordinary wooden driver head, 6 represents a recess bored in the head; this recess in the construction shown being placed substaning around when tially centrally and in the line of fli ht of the head. It may at once be mentione however, that I do not limit myself to the position of the recess, since this may vary with the form of club. For exam 1e the recess may be provided parallel to tl fe face of the head, such an arrangement being useful for narrow heads such as the heads of putters. Within the recess a socket c preferablv made of some non-corrodible metal, is fitted. The base of the socket is provided with an aperture to recieve a screw as shown, and in order to avoid any chance of the socket turnin place a lug or lugs (1 may be provided as shown to engage a suitable recess or recesses in the head. I may even employ a square or rectangular socket to-fit in a correspondingly shaped recess in the head.

The socket 0 is adapted to receive weights 6 of varying magnitude consisting in the construction illustrated of a cylindrlcal mass of brass or other metal of a size to fit snugly in the hollow of the socket. These weights are preferably of a single length so as to fill the hollow of the socket, and in order that weights of varying magnitude are provided they are mostly bored out to a greater or less extent so as to be partially hollow, as clearly shown in Fig. l. The maximum weight will of course be solid as shown in Figs. 6 and 7. It will thus be seen that a set of weights may be provided of varying magnitude any one of which may be employed in the socket as desired.

In order that the weights may be easily removed, a small recess 7' consisting of two short borings at right angles may be provided at one or both ends, as clearly shown in Figs. 6 and 7. Such a recess may accommodate a bent piece of Wire to extract the weight.

In order to keep the weights in place in the socket a cap 9 is provided which is adapted to screwupon the end of the socket as shown. It will also be seen that a number of slits are formed in the wall of the socket and further that the screw-threaded portions of the socket and cap are tapered slightly. Hence when the cap is screwed home upon the socket, the wall of the latter where it is slotted will be compressed slightly, to grip the weight which is being employed and prevent its shaking about. To provide a further safeguard against risk of movement of the weight within the socket,

thewall of the latter may be cut at one or more places to form a tongue or tongues as shown at k, the ends of which are bent inwardly slightly to engage the weight Within the socket. These tongues will yield slightly when the weight is inserted and tend to keep the same stationary. If, however, the weights are made a good sliding fit in the socket there should be no real necessity for this extra safeguard, though this method may be adopted if desired in place of the tapered threaded portion. I

The end of the cap 9 is preferably nicely rounded or shaped to follow the contour of the surface of the head, and in order that it maybe turned with a suitable tool, a slot 71 is provided as shown.

While the form of weights already described is the one preferred, yet in place of single weights of varying magnitude I may employ a number of small weights in the socket at the same time as shown at e in Fig. 9, more or less of these weights being employed as desired. In this case the small weights preferably consist of disks of metal of a size to fit snugly the aperture in the socket. Obviously to alter the weight of the club head or the like either some disks are added or taken away. Inorder to avoid any chance of the disks rattling about, dummy disks e of some relatively light but firm material such as aluminium, wood or ebonite may be employed to take the place of those weights which have been removed.

By providing dummy disks as just stated the actual weights may be concentrated inany desired position in the hole so that the balance of the head may be varied. For instance some dummy disks may first be inserted and then the real weights inserted behind, thus tending to bring the center of gravity of the head farther back, and vice versa. In Fig. 9 the heavy disks are shown as arranged between dummy disks 6 An alteration of the position of the center of gravity will also be effected with the form of weight shown in Fig. 1 according to which end faces the face of the club, since the solid end of the weight will of course, be the heavier. Weights may therefore be constructed so that their weight is concentrated at any part of their length desired by boring them from both ends to a greater or less extent.

Instead of or in addition to the weights in the head of the club I may also provide accommodation for a similar arrangement of weights in the handle or shaft of the club. ,For insta'iice a hole may be made in the handle in the direction of the axis thereof for containing weights as in the case of the head of the club. By altering the weight of the handle in this manner a marked dif ference in the balance of the club may be effected. In View however, of the rather small diameter of most club handles, where "it is desired to provide accommodation in connection with the handle or shaft for a weight or weights I preferably adopt the arrangement shown in Fig. 8. That is to say I attach a socket member 0 similar to that already described, to the end of the handle as shown, instead of placing the socket member within a recess in the handle.

Various changes may be made in the de tails of construction, for instance more than one recess may be provided for containing the weight or weights in which case the total weight in each recess may be less than if only one recess be employed. The dotted circles in Fig. 2 indicate how two recesses may be arranged side by side. Further it is not essential to employ a separate socket portion for the weight or weights, espe- .the invention may be applied to any golf club so long as there 1s room for the accommodatlon of the weight or weights, and further the invention may beapplied to other clubs, sticks or implements as for example, to cricket bats, croquet mallets, tennis rackets, hockey and polo sticks, and also to billiard cues. In the latter case the weight or weights would-be accommodated in the manner described in the butt end of the cue. The arrangement shown in Fig. 8 may be conveniently adopted for billiard cues, the socket member 0 being attached to the butt end of the cue.

Having described the invention what I claim as new and desire to secure by Letters Patent is 1. A club, stick or like implement for golf or other purposes, weighting means therefor whereby the weight or balance or both may be varied, means for retaining the weighting means in place, and means movable against the side or sides of said weighting means so as to prevent the said weighting means from shifting when the implement is in use.

2. A club, stick or like implement for golf or other purposes, a recess therein, weighting means in said recess, means for closing the recess, and means movable against said weighting means so as to bring lateral pressure to bear'thereon to secure the weighting means in place.

3. A club, stick or like implement for golf or other purposes having a head, .a socket member carried thereby having its axisin the line of flight of the head, weighting means for said socket member and means for bringing lateral pressure to bear on said weighting means.

, 4. A club, stick or like implement for golf or other purposes, a socket member attached means in said socket member, means for clos-- ing the open end of said socket member and means for bringing lateral pressure tobear upon said weighting means.

5. Means for varying theweight or' balance or both of clubs, sticks or the like for golf or other purposes, comprising a socket member, means for closing said socket member, weighting means adapted to be contained therein, and means for contracting the socket member against the weighting means therein.

6. Means for varying the weight or balance or both of clubs, sticks or the like for golf or other purposes, comprising a socket member open at one end, weighting means therein, means for closing the open end of the receptacle to prevent longitudinal movement of the weighting means, and means for bringing lateral pressure to bear upon said weighting means.

7. Means for va ing the weight or balance or both of clu s, sticks or the like for golf or other purposes, comprising a socket member, weighting means adapted to be con tained therein, slots in the wall of the socket member near its open end, a screwed cap for closing said open end, and threads on the socket member for engagement by the threads of the cap, the screw threaded portions of the cap and socket member being tapered, whereby when the cap is screwed upon the socket member, the slotted wall thereof is contracted upon the weighting means.

8. Means for varying the weight or balber,

ance'or both 'of clubs, sticks or the like for golf. or other purposes, comprising a socket member, means for closing said socket memweights of varying magnitude but equal exterior dimensions any of which may be placed within the said socket member, and means for retaining the said weights in place by bringing lateral pressure to bear thereon when within the socket member.

9. Means for varying the weight or balance or both of clubs, sticks or the like for golf or other purposes, drical socket member, means for attaching the said socket member to the club, stick or the like, means for closing said socket member, means for preventing rotation of the said socket member, weighting means adapted to be carried Within the said socket member, and means for bringing lateral pressure t? bear .upon said weighting means when in ace. p 10. Means for varying the weight or balance or both of clubs, sticks or the like for golf or other purposes, comprising a socket member, weighting means adapted to be carried within said socket member, and a resilient tongue in the wall of the socket member comprising a cylinto press upon the weighting means within the socket member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

A. U. WRIGHT, H. C. P. DAY.

US1167387A 1913-11-01 1913-11-01 Golf-club and the like. Expired - Lifetime US1167387A (en)

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Cited By (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534947A (en) * 1946-12-31 1950-12-19 Elvin M Bright Golf club head
US2750194A (en) * 1955-01-24 1956-06-12 Austin N Clark Golf club head with weight adjustment
US3190651A (en) * 1962-09-10 1965-06-22 Albert E W Thomas Golf club including detachable ball striking faces of various lofts
US3897066A (en) * 1973-11-28 1975-07-29 Peter A Belmont Golf club heads and process
US3909005A (en) * 1974-01-15 1975-09-30 Geza A Piszel Golf club
US3979123A (en) * 1973-11-28 1976-09-07 Belmont Peter A Golf club heads and process
US4008896A (en) * 1975-07-10 1977-02-22 Gordos Ambrose L Weight adjustor assembly
US4432552A (en) * 1982-04-15 1984-02-21 Saverino Bennett J Golf practice apparatus
US4444396A (en) * 1982-08-20 1984-04-24 Wendt William P Weighted golf swing exercise club
US4470327A (en) * 1982-09-01 1984-09-11 Gerber Legendary Blades Adjustable balance handle for knife
US5244210A (en) * 1992-09-21 1993-09-14 Lawrence Au Golf putter system
US5344151A (en) * 1993-08-11 1994-09-06 Anderson Bartley D Golf putter head
US6306048B1 (en) 1999-01-22 2001-10-23 Acushnet Company Golf club head with weight adjustment
US20020094884A1 (en) * 1999-11-01 2002-07-18 Alan Hocknell Multiple material golf head
US6565452B2 (en) 1999-11-01 2003-05-20 Callaway Golf Company Multiple material golf club head with face insert
US6575845B2 (en) 1999-11-01 2003-06-10 Callaway Golf Company Multiple material golf club head
US6582323B2 (en) 1999-11-01 2003-06-24 Callaway Golf Company Multiple material golf club head
US6595837B2 (en) 2000-04-10 2003-07-22 Whirlpool Corporation Sharpening stand for a cutlery device
US6602149B1 (en) 2002-03-25 2003-08-05 Callaway Golf Company Bonded joint design for a golf club head
US20030153401A1 (en) * 1999-11-01 2003-08-14 Callaway Golf Company Golf Club Head with Customizable Center of Gravity
US20030171160A1 (en) * 1999-11-01 2003-09-11 Callaway Golf Company Multiple material golf club head
US6625890B2 (en) 2001-04-09 2003-09-30 Whirlpool Corporation Balanced kitchen cutlery device
US6648773B1 (en) 2002-07-12 2003-11-18 Callaway Golf Company Golf club head with metal striking plate insert
US6663504B2 (en) 1999-11-01 2003-12-16 Callaway Golf Company Multiple material golf club head
US6672975B1 (en) 2003-02-06 2004-01-06 Callaway Golf Company Golf club head
US20040014534A1 (en) * 1999-11-01 2004-01-22 Callaway Golf Company Multiple Material Golf Club Head
US20040058743A1 (en) * 2002-09-25 2004-03-25 Callaway Golf Company Multiple material golf putter head
US6719643B1 (en) 2003-02-12 2004-04-13 Callaway Golf Company Golf club head with a face insert
US20040092333A1 (en) * 2002-11-12 2004-05-13 Callaway Golf Company Golf club head with a face insert
US20040097299A1 (en) * 2002-11-18 2004-05-20 Callaway Golf Company Golf club head
US20040097301A1 (en) * 2002-05-01 2004-05-20 Callaway Golf Company [Golf Club Head]
US20040142761A1 (en) * 2002-07-12 2004-07-22 Evans D. Clayton Golf club head with metal striking plate insert
US20040171040A1 (en) * 2002-11-22 2004-09-02 Veeraiah Bodepudi Detectable labeled nucleoside analogs and methods of use thereof
US20040192467A1 (en) * 2003-03-31 2004-09-30 Callaway Golf Company Golf Club Head
US20040248667A1 (en) * 2003-05-27 2004-12-09 Callaway Golf Company [GOLF CLUB HEAD (Corporate Docket PU2150)]
US20040248665A1 (en) * 2003-06-04 2004-12-09 Callaway Golf Company [GOLF CLUB HEAD(Corporate Docket Number PU2149)]
US20050003903A1 (en) * 1999-11-01 2005-01-06 Callaway Golf Company Multiple material golf club head
US20050064955A1 (en) * 1999-11-01 2005-03-24 Callaway Golf Company Multiple material golf club head
US20050176522A1 (en) * 2004-02-05 2005-08-11 Callaway Golf Company Multiple material golf club head
US20050221008A1 (en) * 2004-03-30 2005-10-06 Callaway Golf Company Method of Plating a Golf Club Head
US20050266933A1 (en) * 2004-06-01 2005-12-01 Callaway Golf Company Golf club head with gasket
US20050278931A1 (en) * 2004-06-22 2005-12-22 Callaway Golf Company Method for processing a golf club head with cup shaped face component
US20050288124A1 (en) * 2004-06-25 2005-12-29 Callaway Golf Company Golf club head
US20060058114A1 (en) * 2004-09-10 2006-03-16 Callaway Golf Company Multiple Material Golf Club Head
US20060079346A1 (en) * 2004-10-08 2006-04-13 Callaway Golf Company Multiple Material Golf Club Head
US20060142095A1 (en) * 2004-12-27 2006-06-29 Glickman Joel I Adjustable weight putter
US20060148587A1 (en) * 2005-01-03 2006-07-06 Callaway Golf Company Golf Club Head
US20060148586A1 (en) * 2005-01-03 2006-07-06 Callaway Golf Company Golf Club Head
US20060172822A1 (en) * 2005-02-03 2006-08-03 Nelson Precision Casting Co., Ltd. Adjusting block for golf club head
US20060211514A1 (en) * 2005-03-18 2006-09-21 Callaway Golf Company A Golf Club Head with a Face Insert
US20060217215A1 (en) * 2004-09-10 2006-09-28 Erickson Matthew J Multiple Material Golf Club Head
US20060229141A1 (en) * 2005-04-08 2006-10-12 Galloway J A High performance low cost driver using multiple material face design
US20060240908A1 (en) * 2005-02-25 2006-10-26 Adams Edwin H Golf club head
US20060287127A1 (en) * 2002-01-10 2006-12-21 Billings David P Golf club head weight with seal and vibration dampener
US20060293120A1 (en) * 2005-01-03 2006-12-28 Cackett Matthew T Golf Club with High Moment of Inertia
US7163468B2 (en) 2005-01-03 2007-01-16 Callaway Golf Company Golf club head
US20070093316A1 (en) * 2005-10-25 2007-04-26 Sri Sports Limited Golf club head and golf club
US20070099722A1 (en) * 2005-01-03 2007-05-03 Stevens Daniel M Golf Club Head
US20070149315A1 (en) * 2005-12-23 2007-06-28 Acushnet Company Metal wood club
US20070293351A1 (en) * 1999-11-01 2007-12-20 Callaway Golf Company Multiple material golf club head
US20070298904A1 (en) * 2006-06-24 2007-12-27 Bill Dworzan Adjustable putter
US20080020857A1 (en) * 2005-01-03 2008-01-24 Callaway Golf Company Golf club with high moment of inertia
US20080039229A1 (en) * 2006-08-09 2008-02-14 Fu Sheng Industrial Co., Ltd. Golf club head having removable weight
US20080045354A1 (en) * 2006-08-17 2008-02-21 Drew Donald J Putter head having means for adjustment of the centre of gravity and weight
US20080051219A1 (en) * 2005-03-18 2008-02-28 Callaway Golf Company Multiple material golf club head
US20080119302A1 (en) * 2006-11-17 2008-05-22 Thomas Orrin Bennett Metal wood club
US20080132353A1 (en) * 2006-12-01 2008-06-05 Pen-Long Hsiao Weight adjustable golf club head
US20080176667A1 (en) * 2007-01-23 2008-07-24 Ernesto Gutierrez Weighted trainer golf club
US20080305886A1 (en) * 2007-06-11 2008-12-11 Mei-Chu Yeh Golf putter head assembly
US20090075748A1 (en) * 2007-09-13 2009-03-19 Callaway Golf Company Golf club with removable components
US20090088272A1 (en) * 2005-01-03 2009-04-02 Callaway Golf Company Golf club head
US20090143162A1 (en) * 2005-01-03 2009-06-04 Callaway Golf Company Golf club with high moment of inertia
US20090163293A1 (en) * 2005-01-03 2009-06-25 Callaway Golf Company Golf club head
US20090163294A1 (en) * 2007-12-19 2009-06-25 Callaway Golf Company Driver with deep aft cavity
US20090293259A1 (en) * 2008-06-02 2009-12-03 Callaway Golf Company Method for constructing a multiple piece golf club head
US20100000071A1 (en) * 2008-07-02 2010-01-07 Callaway Golf Company Method for constructing a multiple piece golf club head
US20100075774A1 (en) * 2008-09-19 2010-03-25 Bridgestone Sports Co., Ltd. Golf club head
US20100139078A1 (en) * 2008-12-04 2010-06-10 Callaway Golf Company Method for forming a multiple material fairway-type golf club head
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US20100317461A1 (en) * 2009-06-11 2010-12-16 Karsten Manufacturing Corporation Club Heads With Multiple Density Weighting And Methods Of Manufacturing The Same
US20110039636A1 (en) * 2009-08-17 2011-02-17 Callaway Golf Company Selectively lightened wood-type golf club head
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US20110139015A1 (en) * 2009-11-11 2011-06-16 Bettina Haller Frying pan with a long handle
US20110143858A1 (en) * 2009-12-16 2011-06-16 Callaway Golf Company External weight for golf club head
US20130040755A1 (en) * 2008-12-18 2013-02-14 Nike, Inc. Golf Clubs and Golf Club Heads Having Interchangeable Rear Body Members
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Cited By (219)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534947A (en) * 1946-12-31 1950-12-19 Elvin M Bright Golf club head
US2750194A (en) * 1955-01-24 1956-06-12 Austin N Clark Golf club head with weight adjustment
US3190651A (en) * 1962-09-10 1965-06-22 Albert E W Thomas Golf club including detachable ball striking faces of various lofts
US3897066A (en) * 1973-11-28 1975-07-29 Peter A Belmont Golf club heads and process
US3979123A (en) * 1973-11-28 1976-09-07 Belmont Peter A Golf club heads and process
US3909005A (en) * 1974-01-15 1975-09-30 Geza A Piszel Golf club
US4008896A (en) * 1975-07-10 1977-02-22 Gordos Ambrose L Weight adjustor assembly
US4432552A (en) * 1982-04-15 1984-02-21 Saverino Bennett J Golf practice apparatus
US4444396A (en) * 1982-08-20 1984-04-24 Wendt William P Weighted golf swing exercise club
US4470327A (en) * 1982-09-01 1984-09-11 Gerber Legendary Blades Adjustable balance handle for knife
US5244210A (en) * 1992-09-21 1993-09-14 Lawrence Au Golf putter system
US5344151A (en) * 1993-08-11 1994-09-06 Anderson Bartley D Golf putter head
US6306048B1 (en) 1999-01-22 2001-10-23 Acushnet Company Golf club head with weight adjustment
US6663504B2 (en) 1999-11-01 2003-12-16 Callaway Golf Company Multiple material golf club head
US6471604B2 (en) 1999-11-01 2002-10-29 Callaway Golf Company Multiple material golf head
US6491592B2 (en) 1999-11-01 2002-12-10 Callaway Golf Company Multiple material golf club head
US6565452B2 (en) 1999-11-01 2003-05-20 Callaway Golf Company Multiple material golf club head with face insert
US6575845B2 (en) 1999-11-01 2003-06-10 Callaway Golf Company Multiple material golf club head
US6582323B2 (en) 1999-11-01 2003-06-24 Callaway Golf Company Multiple material golf club head
US20050064955A1 (en) * 1999-11-01 2005-03-24 Callaway Golf Company Multiple material golf club head
US7128661B2 (en) 1999-11-01 2006-10-31 Callaway Golf Company Multiple material golf club head
US20030153401A1 (en) * 1999-11-01 2003-08-14 Callaway Golf Company Golf Club Head with Customizable Center of Gravity
US20030171160A1 (en) * 1999-11-01 2003-09-11 Callaway Golf Company Multiple material golf club head
US20030176238A1 (en) * 1999-11-01 2003-09-18 Callaway Golf Company [MULTIPLE MATERIAL GOLF CLUB HEAD(Corporate Docket Number PU2159)]
US20050059507A1 (en) * 1999-11-01 2005-03-17 Callaway Golf Company Multiple material golf club head
US7125344B2 (en) 1999-11-01 2006-10-24 Callaway Golf Company Multiple material golf club head
US20020094884A1 (en) * 1999-11-01 2002-07-18 Alan Hocknell Multiple material golf head
US6881159B2 (en) 1999-11-01 2005-04-19 Callaway Golf Company Multiple material golf club head
US7252600B2 (en) 1999-11-01 2007-08-07 Callaway Golf Company Multiple material golf club head
US6994637B2 (en) 1999-11-01 2006-02-07 Callaway Golf Company Multiple material golf club head
US20040014534A1 (en) * 1999-11-01 2004-01-22 Callaway Golf Company Multiple Material Golf Club Head
US7118493B2 (en) 1999-11-01 2006-10-10 Callaway Golf Company Multiple material golf club head
US7255654B2 (en) 1999-11-01 2007-08-14 Callaway Golf Company Multiple material golf club head
US20070293351A1 (en) * 1999-11-01 2007-12-20 Callaway Golf Company Multiple material golf club head
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