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Publication numberUS2023131 A
Publication typeGrant
Publication date3 Dec 1935
Filing date21 Aug 1933
Priority date5 Sep 1932
Publication numberUS 2023131 A, US 2023131A, US-A-2023131, US2023131 A, US2023131A
InventorsJames Gibson Robert
Original AssigneeJames Gibson Robert
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Steel shaft for golf clubs
US 2023131 A
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Description  (OCR text may contain errors)

Dec. 3, 1935. R J GIBSON 2,023,131

STEEL SHAFT FOR GOLF CLUBS Filed Aug. 21, 1953 Patented Dec. 3, 1935 UNITED STATES PATENT OFFICE STEEL SHAFT FOR GOLF CLUBS Application August 21, 1933, Serial No. 686,125 In Great Britain September 5, 1932 2 Claims.

This invention relates to improvements in golf clubs of the kind which is fitted with a steel shaft.

Certain steel-shaft golf clubs are found to 5 sting the hands if the ball is not hit fairly in the centre of the face of the club; if the blow is not correctly timed or if the club head strikes the ground heavily or the club meets an obstruction which causes a jar or sudden impact. It is 10 believed the stinging sensation is due to a very rapid elastic vibration of the club, and that if the vibration could be damped or broken up in some way the ill effects of the jar or impact would be largely eliminated.

5 The applicant has observed that the vibrations of a hollow steel golf club shaft are modified if one or more plugs of a suitable material, otherwise than the plug which is frequently employed for wedging the handle to the head, preferably a 2 :esilient material, are firmly wedged inside the hollow of the shaft, and it is believed that such plugs also operate to damp or modify the vibrations in the club so as to reduce the stinging sensation felt in the hands when the club meets 25 an obstruction.

The invention thus comprises a manner of checking or modifying the vibrations in the shaft of a hollow steel-shafted golf club, which consists in placing inside the hollow of the shaft plugs 30 of suitable resilient material.

It also includes a manner of checking or modifying the vibrations in a steel-shafted golf club and/or the stinging propensities of the club when it strikes the ground or an obstruction, which 35 consists in making the shaft hollow and tapering, and in firmly wedging inside the hollow of the shaft one or more plugs of resilient material, such for example as rubber, cork or even tubular steel thimbles or ferrules or the like.

40 The invention also includes a hollow steel shaft for a golf club having one or more plugs of rubber, cork or other resilient material inside the hollow of the tube firmly wedged in the tube.

It has been found when a taper hollow steel 45 shaft is used that if a plug of rubber is forced down the inside until it wedges tight the period of vibration of the club, as observed by the musical pitch of the audible sound emitted, is very distinctly altered.

50 The best positions for the plug will depend upon the weight and the balance of the club. It is probable that the most effective positions of the plugs may depend upon the nodes about which the club when held in the hands by the 55 handle is likely to vibrate.

It is believed that the club is likely to have a nodal point or points about which it will vibrate, the positions of which will depend upon the weight of the club, the weight of the head and its balance and also upon the grip in the hands the golfer. The best position for the plugs may be at or on either side of the nodal point and possible also slightly below the leather 5 handle grip on the top end of the shaft.

Considerable damping or modification in the vibration of a steel shaft has been observed by fixing one rubber plug at or about the lower quarter point and another at or about the upper quarter point and therefore these positions are regarded as a fundamental part of this invention.

In order that my invention may be clearly understood and readily carried into effect, I have appended hereto a drawing illustrating one embodiment thereof in sectional side elevation and in which I is the shaft of a steel or metal shafted golf club which is tapered from the handle end 4 down to the head 5. Plugs of rubber, cork or any other resilient material which will have a damping effect on the vibrations of the shaft when it is subjected to shock or impact are shown at 2 and 3.

These plugs are driven down inside the hollow shaft from the larger end until they take a firm seating each in the hollow shaft, the lower being' approximately midway between the head and the centre of the shaft, and the other being approximately midway between the centre and top of the shaft.

Further, it is not necessary to restrict the plugs to two in number as I may use any number of plugs as widely or as closely spaced as desired.

What I claim is:-

1. In a hollow tapered steel shaft golf club the provision of means to check vibration of the shaft when the club strikes an obstruction, said means consisting of a pair of relatively short plugs spaced apart and wedged downwards within the tapered shaft, the lower plug being located approximately midway between the head and the centre of the shaft, and the upper one being located approximately midway between the top and the centre of the shaft, said two plugs being composed of a cushioning material.

2. A method of checking or modifying the vibrations in a steel-shafted golf club or the stinging propensities of the club when it strikes the ground or an obstruction, which consists in making the shaft hollow and tapering and in 5 firmly wedging inside the hollow of the shaft above the head a pair of relatively short plugs of cushioning material, said plugs being spaced apart, one being approximately midway between the centre of the shaft and the head and the other approximately midway between the centre of the shaft and the topof the handle.

ROBERT JAMES GIBSON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3861682 *5 Oct 197221 Jan 1975Fujii HirokazuBaseball bat
US3941380 *12 Jul 19732 Mar 1976Patentex S.A.Tennis rackets and similar implements with vibration damper
US4090711 *15 Apr 197623 May 1978Amato Raymond GGolf club shafts including vibratory means
US4241919 *26 Dec 197830 Dec 1980Ronald ForemanBaseball bat with modified internal air pressure
US4979743 *5 Dec 198925 Dec 1990Sears Gerard AGolf club grip
US5083790 *27 Jun 199128 Jan 1992John WheatleyGolf swing training stick
US5219164 *31 May 199115 Jun 1993Peng Jung ChingShock absorbing baseball bat
US5294119 *28 Sep 199215 Mar 1994Taylor Made Golf Company, Inc.Vibration-damping device for a golf club
US5297791 *13 Oct 199229 Mar 1994Fujikura Rubber Ltd.Golf club shaft and method of producing the same
US5478075 *27 Jun 199426 Dec 1995Saia; Carman R.Golf club stabilizer
US5496028 *30 Jan 19955 Mar 1996Ralph Maltby Ent., Inc.Golf club shaft with two flex points
US5575722 *6 Sep 199519 Nov 1996Vertebrex Golf L.L.C.Golf club stabilizer and method of stabilizing a golf club
US5607364 *21 Dec 19944 Mar 1997Black & Decker Inc.Polymer damped tubular shafts
US5655975 *2 Nov 199512 Aug 1997Roush Anatrol, Inc.Golf club having vibration damping device and method for making same
US5692971 *6 Mar 19962 Dec 1997Williams; Danny R.Shock absorbing insert and other sporting goods improvements
US5716289 *21 Feb 199610 Feb 1998Okoneski; Joseph R.Weighting of golf clubs
US5718643 *19 Jul 199617 Feb 1998Karsten Manufacturing Corp.Vibration dampening insert for golf clubs
US5904622 *12 Sep 199718 May 1999Dana CorporationDriveshaft assembly with vented noise reduction structure
US5935027 *28 Dec 199510 Aug 1999Roush Anatrol, Inc.Multi-mode vibration absorbing device for implements
US5964673 *27 Jan 199712 Oct 1999Hellerich & Brasby Co.Hollow metal bat with stiffened transition zone and method of making same
US6042485 *28 Jan 199828 Mar 2000Harrison Sports, Inc.Vibration damping device
US6117021 *24 Dec 199712 Sep 2000Cobra Golf, IncorporatedGolf club shaft
US6146291 *16 Aug 199714 Nov 2000Nydigger; James D.Baseball bat having a tunable shaft
US623491112 Sep 199722 May 2001Spicer Driveshaft, Inc.Driveshaft assembly having a noise reduction structure
US635495811 Apr 200012 Mar 2002David MeyerVibration damper for a golf club
US6582320 *11 Feb 199924 Jun 2003Edwin B. FendelHybrid golf club shaft
US6729971 *15 Aug 20024 May 2004Ceramixgolf.ComGolf club head with filled cavity
US6764414 *21 Aug 200220 Jul 2004Sumitomo Rubber Industries, Ltd.Golf club shaft
US683781210 Sep 20034 Jan 2005Thomas FaloneVibration dampening grip cover for the handle of an implement
US686362910 Sep 20038 Mar 2005Thomas FaloneVibration damping tape
US68721575 Feb 200229 Mar 2005Sting Free CompanySting minimizing grip for a hand held swinging athletic contact making article
US688026916 Oct 200119 Apr 2005Sting Free CompanyAthletic clothing with sting reduction padding
US689336610 Sep 200317 May 2005Thomas FaloneVibration dampening grip
US693597310 Sep 200330 Aug 2005Sting Free CompanyVibration dampening material
US694258628 May 200413 Sep 2005Sting Free Technologies CompanyVibration dampening material
US69449745 Nov 200420 Sep 2005Sting Free CompanyShoe insert formed of reinforced elastomer for regulating and dampening vibration
US7022029 *15 Mar 20054 Apr 2006Ceramixgolf.Com, Inc.Golf club head with filled cavity
US71501135 Oct 200419 Dec 2006Sting Free Technologies CompanyVibration dampening material and method of making same
US71716966 Dec 20046 Feb 2007Sting Free CompanyAthletic clothing with sting reduction padding
US717169722 Dec 20046 Feb 2007Sting Free CompanyVibration dampening material and method of making same
US744490516 Feb 20074 Nov 2008Bobby HuWrench with reinforced hollow handle
US7686705 *10 Sep 200730 Mar 2010Golf Science Technology LLCGolf club
US78959237 Jul 20081 Mar 2011Bobby HuWrench with reinforced hollow handle
US81423825 Oct 200427 Mar 2012Matscitechno Licensing CompanyVibration dampening material and method of making same
US829760126 Nov 200830 Oct 2012Matscitechno Licensing CompanyVibration dampening material and method of making same
US841326217 Oct 20079 Apr 2013Matscitechno Licensing CompanySound dissipating material
US8419566 *8 Jun 201016 Apr 2013Eaton CorporationHandle with changeable grip
US854596626 Nov 20081 Oct 2013Matscitechno Licensing CompanyVibration dampening material and uses for same
USRE31811 *10 Aug 198122 Jan 1985 Baseball bat with modified internal air pressure
EP0925811A122 Dec 199830 Jun 1999Apollo Sports Holdings Ltd.Shafts
WO1999002223A1 *9 Jul 199821 Jan 1999Lyle SmithPlug for stressing golf club shaft
Classifications
U.S. Classification473/318
International ClassificationA63B53/00, A63B59/00
Cooperative ClassificationA63B53/00, A63B59/0092
European ClassificationA63B53/00