US2034936A - Golf club - Google Patents

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Publication number
US2034936A
US2034936A US55090831A US2034936A US 2034936 A US2034936 A US 2034936A US 55090831 A US55090831 A US 55090831A US 2034936 A US2034936 A US 2034936A
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Prior art keywords
head
golf club
slots
club
construction
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Expired - Lifetime
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George E Barnhart
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George E Barnhart
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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
    • A63B53/047Heads iron-type
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00Details or accessories of golf clubs, bats, rackets or the like
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0416Heads with an impact surface provided by a face insert
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0416Heads with an impact surface provided by a face insert
    • A63B2053/042Heads with an impact surface provided by a face insert the face insert consisting of a material different from that of the head
    • A63B2053/0425Heads with an impact surface provided by a face insert the face insert consisting of a material different from that of the head the face insert comprising two or more different materials
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0445Details of grooves or the like on impact surface
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00Golf clubs
    • A63B53/04Heads
    • A63B2053/0458Heads with non-uniform thickness of the impact face plate

Description

. March 24, 1936. G. E. BARNHART GOLF CLUB Filed July 15, 1931 ]/W/v TOR E. BARNHART 17' GEORGE ATTORNEY Patented Mar. 24, 1936 UNITED STATES PATENT OFFICE 9 Claims.

My invention relates to golf clubs, and the objects of this invention are: first, to provide a golf club whereby, when a golf ball is struck thereby in a normal manner, the load and sudden impact against the head will not be imparted to the hand of the player as a disagreeable or sharp sting as in the case of many golf clubs now in use; second, to provide a golf club having a head which will yield sufliciently to such impact as to absorb substantially all or a material amount of the shock so that the same will not be imparted to the hands of the player in a disagreeable manner; third, to provide a golf club of this class which will reduce the strain and distortion on the shaft; fourth, to provide a novel and simple cushion construction for the front face of golf clubs for effecting at least in part, the functions above and hereafter mentioned; fifth, to provide 'novel head construction for golf clubs whereby the head, though made of metal and of considerable mass, is bodily yieldable and resilient so that the portion of the head member striking the ball temporarily and resiliently yields under the impact, allowing the adjacent portions of the head to advance by momentum, thus reducing the strain on the club and the shock or sting upon the hands of the player; sixth, to provide a golf club head which is not materially altered in size or weight over the conventional club though embodying the advantages and additional features herein mentioned; seventh, to provide a head construction of this class which may be incorporated wholly or in part in the forms of golf clubs now in use; eighth, to provide as a whole a novel golf club head construction; and, ninth, to provide a head of this class for golf'clubs which is very simple and economical of construction proportionate to its functions, durable, and which will not readily deteriorate or get out of order.

With these and other objects in view as will appear hereinafter, I have devised a golf club having certain novel features of construction, combination and arrangement of parts and portions, as will be hereinafter described in detail and particularly set forth in the appended claims,

reference being had to the accompanying drawing and to the characters of reference thereon which form a part of this application in which:

Figure 1 is a front elevational view of the head end of a golf club incorporating my invention in one form, showing the front face of the head; Fig. 2 is a similar view taken from the back side of the head; Fig. 3 is a transverse sectional elevational view of the head taken through 33 of Fig. 2; Fig. 4 is a longitudinal sectional view of the head taken through fl4 of Fig. 2; Fig. 5 is an enlarged fragmentary sectional view similar to that shown in Fig. 4 but of the tip end only of the head; Fig. 6 is a fragmentary front side elevational view of my golf club in a slightly modifiedform of construction; Fig. 7 is a fragmentary back side elevational view showing another slightly modified form of construction; Fig. 8 is a fragmentary front side elevational view of another slightly modified form of construction; Fig. 9 is a fragmentary front side elevational view of still another slightly modified form of 'construction'of my golf club; and, Fig. 10 is a transverse sectional view thereof taken through l0-l 0 of Fi 9.

Like characters of reference refer to similar parts and portions throughout the views of the drawing. x

The embodiment of my present invention is preferably in connection with iron or other metal head golf clubs, and preferably in the clubs known as driving iron, mid iron, mid mashie, mashie iron, mashie, spade mashie, mashie niblic, and niblic, the embodiment in various forms in the various clubs. It will be noted, however, that certain features of my invention are applicable to other clubs.

In Figs. 1, 3, 4, 6,. and 8, I have shown a golf club with a yieldable cushion at the front face by which the ball is struck with a cushioning effect. In Fig. 1 the head I is providedwith a shallow recess la, the edges of the recess being spaced from the edges of the face of the head. Over the bottom of the recess is positioned a layer or sheet of yieldable material 2. This material or substance is preferably resilient and may be made of rubber, felt, rawhide, or similar substances, or, in some instances, it may be only slightly yieldable materiaLsuch as lead. Over the opening and over the outer side of the yieldable and resilient material is secured a relatively thin and resilient metal plate 3.. This metal plate may be secured in place by screws 4 or other suitable means.

With this construction, the face of the club will yield when the ball is struck and will absorb .to a large extent the hard and sudden impacts and will prevent to a material degree the usual sting or shock upon the hands gripping the club. Such cushioning effect upon the club will also increase the driving force of the club.

In Fig. 6 there is no recess but the cushioning means extends substantially over the whole face of the head and to the edges thereof.

In Fig. 8 the length of the cushion is reduced. Such construction is employed in clubs which do not require such large driving surface, or when it is desired to provide greater longitudinal yieldability and resiliency by providing transverse slots lb from the front to the rear side of the head of the club, as shown.

In Fig. 2 I have shown the back side of the club as provided with longitudinal and transverse slots or grooves lo and Id, respectively. These slots or grooves are out part way into the back side of the head, thereby reducing the longitudinal and transverse rigidity. The transverse grooves ld permit the head to be distorted longitudinally when the ball is struck, while the longitudinal grooves permit transverse distortion, thus providing longitudinal and transverse yieldability and resiliency in the body of the head itself. These grooves, out part way in, do not interfere with the cushion at the front face, but cooperate therewith to provide a yieldable and resilient head. In this structure, I have also shown slots lb and le extending completely through the head transversely and longitudinally with respect thereto, but beyond the edges of the cushion plate. longitudinal and transverse flexibility. These slots or grooves cause longitudinal and transverse flexibility and resiliency in the head itself and thereby cause a change of direction of the forces from the impact to be confined to the head instead of being imparted as vibratory motion in waves to the grip end of the club.

Both sets of grooves are preferably employed in the distance driving club. In the others the longitudinal grooves are preferably eliminated and the transverse grooves are reduced in number, as shown in Fig. 7, in the class or series approaching the spade mashie. In the latter there may be only the one groove If immediately adjacent to and parallel, or substantially parallel, to the shank.

The grooves or slots lo, I d and If, and the slots lb and le also, may be filled with a flexible and preferably resilient or semi-resilient filler, such as rubber, and the like. The grooves or slots may be undercut slightly, or dovetailed, as indicated by lg in Fig. 5, in order, more effectively, to retain the filler in position. Such filling of the slots which are cut through the head prevents whistling to a large extent when the club is swung. Such filling also presents a smooth and attractive appearance and prevents dirt from accumulating in the slots or grooves. A resilient filler will also add to the resiliency of the head and at the same time dampen the vibration.

The cushion may be entirely omitted as shown in Fig. 9, and instead a plurality of transverse slots lb may be provided, such slots extending completely through the head from the front to the rear side.

In such clubs as the mashie niblic and niblic, the transverse slots or grooves are preferably omitted and only a cushion face is provided.

The latter slots also increase the,

Various combinations of cushion faces, slots and grooves may be made to suit the various players.

It will be here noted that a cushion face may be made by providing a yieldable plate in spaced relation from the face of the head member, that is, by omitting the yieldable and resilient material 2.

Though I have shown and described a particular construction, combination and arrangement of parts and portions of my golf club, and certain modifications thereof, I do not wish to be limited to the particular construction and modifications disclosed, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by' Letters Patent is:

1. In a golf club, a head member having relatively deep slots extending along the back side thereof, and a resilient filler in said slots.

2. In a golf club, a head member havingrelatively deep intersecting channels in the back side thereof, and a yieldable filler in said channels.

3. In a golf club, a head member having slots extending along the face thereof and through from the front face to the back side thereof, and a yieldable filler in said slots.

4. In a golf club, a head member having relatively deep intersecting cross channels in the back side thereof, rubberfilling said channels, and a rubber facing for the front side of said head member.

5. In a golf club, a relatively thin narrow metallic head member havingrelatively deep intersecting cross channels in the back side thereof, rubber filling said channels, and a yieldable face positioned on the front side of said metallic head member.

6. In a golf club, a metallic head member having a rubber cushion intermediate its ends along the front face thereof, and having slots extending'through from the face to the back thereof, said slots spaced from each end of said cushion, and a semi-resilient cushion material fitting the slots which permits flexing of the club head in an axis substantially parallel to the golf club shaft.

7. In a golf club, a head member having intersecting cross channels in the back side thereof, and rubber filling said channels. 8. In a golf club, a head member having intersecting cross channels in the back side thereof, rubber filling said channels, and a yieldable covering for the front side of said head member.

9. In a golf club, a relatively thin narrow metallic head member having intersecting cross channels in the backside thereof, and rubber filling said channels.

GEORGE E. BARNHART.

US2034936A 1931-07-15 1931-07-15 Golf club Expired - Lifetime US2034936A (en)

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Cited By (87)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931975A (en) * 1969-09-10 1976-01-13 Cook Raymon W Golf club
US3954270A (en) * 1969-09-10 1976-05-04 Ray Cook Golf Putters, Inc. Golf club
US3975023A (en) * 1971-12-13 1976-08-17 Kyoto Ceramic Co., Ltd. Golf club head with ceramic face plate
US3989248A (en) * 1974-12-26 1976-11-02 Pepsico, Inc. Golf club having insert capable of elastic flexing
US4027885A (en) * 1974-06-06 1977-06-07 Rogers Kenneth A Golf iron manufacture
JPS61176372A (en) * 1985-01-29 1986-08-08 Nippon Musical Instruments Mfg Club head for golf
US4792139A (en) * 1985-09-09 1988-12-20 Yamaha Corporation Golf club head
US4798383A (en) * 1985-01-29 1989-01-17 Yamaha Corporation Golf club head
US5024437A (en) * 1989-06-12 1991-06-18 Gear Fit Golf, Inc. Golf club head
US5083778A (en) * 1988-02-18 1992-01-28 Douglass Michael B Golf club putter head
FR2680695A1 (en) * 1991-08-28 1993-03-05 Rossignol Sa Head for a golf club
US5255918A (en) * 1989-06-12 1993-10-26 Donald A. Anderson Golf club head and method of forming same
US5261663A (en) * 1989-06-12 1993-11-16 Donald A. Anderson Golf club head and method of forming same
US5261664A (en) * 1989-06-12 1993-11-16 Donald Anderson Golf club head and method of forming same
US5344140A (en) * 1989-06-12 1994-09-06 Donald A. Anderson Golf club head and method of forming same
EP0634195A1 (en) * 1993-07-06 1995-01-18 Wilson Sporting Goods Company Golf club with plurality of inserts
US5398929A (en) * 1993-03-10 1995-03-21 Yamaha Corporation Golf club head
US5403007A (en) * 1992-07-28 1995-04-04 Chen; Archer C. C. Golf club head of compound material
US5405136A (en) * 1993-09-20 1995-04-11 Wilson Sporting Goods Co. Golf club with face insert of variable hardness
US5411255A (en) * 1992-09-22 1995-05-02 Sumitomo Rubber Industries, Ltd. Golf club head
US5497993A (en) * 1994-03-14 1996-03-12 Shan; Shiau S. Structure of golf club head
WO1997032632A2 (en) * 1996-03-04 1997-09-12 Jackson Michael D Golf club with opening at base of the head
US5743813A (en) * 1997-02-19 1998-04-28 Chien Ting Precision Casting Co., Ltd. Golf club head
US5785610A (en) * 1995-11-21 1998-07-28 Premier Golf, Inc. Clubhead for golf club
US5944619A (en) * 1996-09-06 1999-08-31 Acushnet Company Golf club with an insert on the striking surface
US6042486A (en) * 1997-11-04 2000-03-28 Gallagher; Kenny A. Golf club head with damping slot and opening to a central cavity behind a floating club face
US6048277A (en) * 1998-07-13 2000-04-11 Raymond; David Golf club head having upwardly directed and opposing, oblique score lines
WO2000038796A1 (en) * 1998-12-23 2000-07-06 Acushnet Company Golf club head with an insert on the striking surface
US6093116A (en) * 1998-12-22 2000-07-25 Callaway Golf Company Golf club head with vibration damping channels
US6095931A (en) * 1998-12-28 2000-08-01 Callaway Golf Company Bi-material golf club head having an isolation layer
US6193615B1 (en) * 1998-11-09 2001-02-27 Atsunari Hirota Head of golf clubs that spins more
US6224497B1 (en) * 1997-09-25 2001-05-01 Anthony J. Antonious Golf club head with improved frequency matched ball striking face characteristics
US6231458B1 (en) 1996-09-06 2001-05-15 Acushnet Company Golf club head with an insert on the striking surface
US20010014629A1 (en) * 1989-06-12 2001-08-16 Anderson Donald A. Golf club head
US6348010B1 (en) * 1999-06-09 2002-02-19 Shaun R. Doolen Golf club having angular grooves
US6368231B1 (en) * 2000-02-09 2002-04-09 Archer C. C. Chen Stealth grooves of ball-striking face of golf club head
WO2002028490A1 (en) * 2000-10-03 2002-04-11 Callaway Golf Company Golf club head with coated striking plate
US6443857B1 (en) * 2001-01-12 2002-09-03 Chao-Jan Chuang Shock-absorbing golf-club head
US6508722B1 (en) 2000-01-31 2003-01-21 Acushnet Company Golf club head and improved casting method therefor
US6595057B2 (en) 2000-04-18 2003-07-22 Acushnet Company Golf club head with a high coefficient of restitution
US20030195058A1 (en) * 2000-04-18 2003-10-16 Rice Scott A. Metal wood club with improved hitting face
WO2003084617A1 (en) * 2002-02-25 2003-10-16 Brakeout Technology, Llc Slotted golf club head
US20030199335A1 (en) * 2000-04-18 2003-10-23 Laurent Bissonnette Golf club head with variable flexural stiffness for controlled ball flight and trajectory
US20030203768A1 (en) * 2002-04-25 2003-10-30 Best Christopher B. Iron club with captive third piece
US6659882B2 (en) * 1999-01-04 2003-12-09 Bernard J. Patsky Golf club with a head balance plane having multiple sweet spots and face and top markings and methods and tools for locating same
US6733400B2 (en) 2001-04-20 2004-05-11 U.I.G., Inc. Gold club iron head, correlated set of individually numbered golf club irons, method of matching a golf club to a golfer, and method of matching a set of golf clubs to a golfer
US20040116205A1 (en) * 2001-06-22 2004-06-17 Lin Chung Sing Shock-absorbing golf-club head
US20040176181A1 (en) * 2000-04-18 2004-09-09 Meyer Jeffrey W. Composite metal wood club
US20050009634A1 (en) * 2000-04-18 2005-01-13 Rice Scott A. Metal wood club with improved hitting face
US20050009633A1 (en) * 2000-04-18 2005-01-13 Rice Scott A. Metal wood club with improved hitting face
US20050101404A1 (en) * 2000-04-19 2005-05-12 Long D. C. Golf club head with localized grooves and reinforcement
US20060068932A1 (en) * 2000-04-18 2006-03-30 Acushnet Company Metal wood club with improved hitting face
US20060189410A1 (en) * 2000-04-18 2006-08-24 Soracco Peter L Metal wood club with improved hitting face
US20070049417A1 (en) * 2005-08-31 2007-03-01 Shear David A Metal wood club
US20070049416A1 (en) * 2005-08-31 2007-03-01 Shear David A Metal wood club
US20070054750A1 (en) * 2005-09-07 2007-03-08 Rice Scott A Metal wood club with improved hitting face
US20070099724A1 (en) * 2005-10-31 2007-05-03 Bridgestone Sports Co., Ltd. Putter head
US20070099725A1 (en) * 2005-10-28 2007-05-03 Bridgestone Sports Co., Ltd. Putter head
US20070254749A1 (en) * 2006-04-26 2007-11-01 Sri Sports Limited Iron-type gold club head
US7367899B2 (en) 2000-04-18 2008-05-06 Acushnet Company Metal wood club with improved hitting face
US20090137339A1 (en) * 2007-11-26 2009-05-28 Takashi Nakano Golf club head
US20090163290A1 (en) * 2007-12-19 2009-06-25 Steve Beaulieu Crosscut Wedge Golf Club
US7582024B2 (en) * 2005-08-31 2009-09-01 Acushnet Company Metal wood club
US20090227392A1 (en) * 2000-04-18 2009-09-10 Meyer Jeffrey W Composite metal wood club
US20100113179A1 (en) * 2008-10-31 2010-05-06 Solheim John A Golf Club Head With Grooves And Method Of Manufacture
US20100197425A1 (en) * 2003-05-01 2010-08-05 Clausen Karl A Metal wood club with improved hitting face
US20100255929A1 (en) * 2000-04-18 2010-10-07 Soracco Peter L Metal wood club
US20100255930A1 (en) * 2005-09-07 2010-10-07 Rice Scott A Metal wood club with improved hitting face
US20110034265A1 (en) * 2009-08-06 2011-02-10 Nike, Inc. Golf club head or other ball striking device having one or more face channels
US20110269567A1 (en) * 2010-04-30 2011-11-03 Bridgestone Sports Co., Ltd Golf club head
US20120184391A1 (en) * 2003-12-12 2012-07-19 Johnson Gregory D Golf club head having a grooved face
US8337324B2 (en) * 2010-05-18 2012-12-25 Nike, Inc. Golf clubs and golf club heads with high contact area groove configurations
US20130085009A1 (en) * 2011-10-04 2013-04-04 Nike, Inc. Golf club head or other ball striking device with wear indicator
US8517860B2 (en) 2010-06-01 2013-08-27 Taylor Made Golf Company, Inc. Hollow golf club head having sole stress reducing feature
US8821312B2 (en) 2010-06-01 2014-09-02 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature with aperture
US8827831B2 (en) 2010-06-01 2014-09-09 Taylor Made Golf Company, Inc. Golf club head having a stress reducing feature
US20140274454A1 (en) * 2013-03-15 2014-09-18 Nike, Inc. Golf club irons including backing material behind ball striking face
US20150018119A1 (en) * 2013-07-15 2015-01-15 Cobra Golf Incorporated Golf club head with face channel
US20150165283A1 (en) * 2012-09-14 2015-06-18 Acushnet Company Golf club head with flexure
US9089749B2 (en) 2010-06-01 2015-07-28 Taylor Made Golf Company, Inc. Golf club head having a shielded stress reducing feature
US9433835B2 (en) 2013-04-01 2016-09-06 Acushnet Company Golf club head with improved striking face
US9492722B2 (en) 2013-11-12 2016-11-15 Taylor Made Golf Company, Inc. Golf club
US9623299B2 (en) 2012-06-08 2017-04-18 Taylor Made Golf Company, Inc. Iron type golf club head
US20170151473A1 (en) * 2006-08-22 2017-06-01 Max Out Golf, Llc Treatment for the hitting surface of a golf club and a method for applying the same
WO2017197242A1 (en) * 2016-05-12 2017-11-16 Karsten Manufacturing Corporation Golf club head having a detached faceplate
US9937395B2 (en) 2013-11-12 2018-04-10 Taylor Made Golf Company, Inc. Golf club
US9937390B2 (en) 2011-08-10 2018-04-10 Acushnet Company Golf club head with flexure

Cited By (200)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931975A (en) * 1969-09-10 1976-01-13 Cook Raymon W Golf club
US3954270A (en) * 1969-09-10 1976-05-04 Ray Cook Golf Putters, Inc. Golf club
US3975023A (en) * 1971-12-13 1976-08-17 Kyoto Ceramic Co., Ltd. Golf club head with ceramic face plate
US4027885A (en) * 1974-06-06 1977-06-07 Rogers Kenneth A Golf iron manufacture
US3989248A (en) * 1974-12-26 1976-11-02 Pepsico, Inc. Golf club having insert capable of elastic flexing
JPS61176372A (en) * 1985-01-29 1986-08-08 Nippon Musical Instruments Mfg Club head for golf
US4798383A (en) * 1985-01-29 1989-01-17 Yamaha Corporation Golf club head
US4884812A (en) * 1985-01-29 1989-12-05 Yamaha Corporation Golf club head
JPH0561951B2 (en) * 1985-01-29 1993-09-07 Yamaha Corp
US4792139A (en) * 1985-09-09 1988-12-20 Yamaha Corporation Golf club head
US5083778A (en) * 1988-02-18 1992-01-28 Douglass Michael B Golf club putter head
US20010014629A1 (en) * 1989-06-12 2001-08-16 Anderson Donald A. Golf club head
US5024437A (en) * 1989-06-12 1991-06-18 Gear Fit Golf, Inc. Golf club head
US5255918A (en) * 1989-06-12 1993-10-26 Donald A. Anderson Golf club head and method of forming same
US5261663A (en) * 1989-06-12 1993-11-16 Donald A. Anderson Golf club head and method of forming same
US5261664A (en) * 1989-06-12 1993-11-16 Donald Anderson Golf club head and method of forming same
US5344140A (en) * 1989-06-12 1994-09-06 Donald A. Anderson Golf club head and method of forming same
US5299807A (en) * 1991-08-28 1994-04-05 Skis Rossignol S.A. Golf club head
FR2680695A1 (en) * 1991-08-28 1993-03-05 Rossignol Sa Head for a golf club
US5403007A (en) * 1992-07-28 1995-04-04 Chen; Archer C. C. Golf club head of compound material
US5411255A (en) * 1992-09-22 1995-05-02 Sumitomo Rubber Industries, Ltd. Golf club head
US5398929A (en) * 1993-03-10 1995-03-21 Yamaha Corporation Golf club head
EP0634195A1 (en) * 1993-07-06 1995-01-18 Wilson Sporting Goods Company Golf club with plurality of inserts
US5405136A (en) * 1993-09-20 1995-04-11 Wilson Sporting Goods Co. Golf club with face insert of variable hardness
US5497993A (en) * 1994-03-14 1996-03-12 Shan; Shiau S. Structure of golf club head
US5785610A (en) * 1995-11-21 1998-07-28 Premier Golf, Inc. Clubhead for golf club
WO1997032632A2 (en) * 1996-03-04 1997-09-12 Jackson Michael D Golf club with opening at base of the head
WO1997032632A3 (en) * 1996-03-04 1997-10-30 Michael D Jackson Golf club with opening at base of the head
US5944619A (en) * 1996-09-06 1999-08-31 Acushnet Company Golf club with an insert on the striking surface
US6231458B1 (en) 1996-09-06 2001-05-15 Acushnet Company Golf club head with an insert on the striking surface
US6334818B1 (en) 1996-09-06 2002-01-01 Acushnet Company Golf club head with an insert on the striking surface
US5743813A (en) * 1997-02-19 1998-04-28 Chien Ting Precision Casting Co., Ltd. Golf club head
US6224497B1 (en) * 1997-09-25 2001-05-01 Anthony J. Antonious Golf club head with improved frequency matched ball striking face characteristics
US6042486A (en) * 1997-11-04 2000-03-28 Gallagher; Kenny A. Golf club head with damping slot and opening to a central cavity behind a floating club face
US6048277A (en) * 1998-07-13 2000-04-11 Raymond; David Golf club head having upwardly directed and opposing, oblique score lines
US6193615B1 (en) * 1998-11-09 2001-02-27 Atsunari Hirota Head of golf clubs that spins more
US6093116A (en) * 1998-12-22 2000-07-25 Callaway Golf Company Golf club head with vibration damping channels
GB2361190B (en) * 1998-12-23 2003-06-04 Acushnet Co Golf club head with an insert on the striking surface
GB2361190A (en) * 1998-12-23 2001-10-17 Acushnet Co Golf club head with an insert on the striking surface
WO2000038796A1 (en) * 1998-12-23 2000-07-06 Acushnet Company Golf club head with an insert on the striking surface
US6095931A (en) * 1998-12-28 2000-08-01 Callaway Golf Company Bi-material golf club head having an isolation layer
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