|Publication number||US2023131 A|
|Publication date||3 Dec 1935|
|Filing date||21 Aug 1933|
|Priority date||5 Sep 1932|
|Publication number||US 2023131 A, US 2023131A, US-A-2023131, US2023131 A, US2023131A|
|Inventors||James Gibson Robert|
|Original Assignee||James Gibson Robert|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (62), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
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.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3861682 *||5 Oct 1972||21 Jan 1975||Fujii Hirokazu||Baseball bat|
|US3941380 *||12 Jul 1973||2 Mar 1976||Patentex S.A.||Tennis rackets and similar implements with vibration damper|
|US4090711 *||15 Apr 1976||23 May 1978||Amato Raymond G||Golf club shafts including vibratory means|
|US4241919 *||26 Dec 1978||30 Dec 1980||Ronald Foreman||Baseball bat with modified internal air pressure|
|US4979743 *||5 Dec 1989||25 Dec 1990||Sears Gerard A||Golf club grip|
|US5083790 *||27 Jun 1991||28 Jan 1992||John Wheatley||Golf swing training stick|
|US5219164 *||31 May 1991||15 Jun 1993||Peng Jung Ching||Shock absorbing baseball bat|
|US5294119 *||28 Sep 1992||15 Mar 1994||Taylor Made Golf Company, Inc.||Vibration-damping device for a golf club|
|US5297791 *||13 Oct 1992||29 Mar 1994||Fujikura Rubber Ltd.||Golf club shaft and method of producing the same|
|US5478075 *||27 Jun 1994||26 Dec 1995||Saia; Carman R.||Golf club stabilizer|
|US5496028 *||30 Jan 1995||5 Mar 1996||Rapport Composite Co. Ltd.||Golf club shaft with two flex points|
|US5575722 *||6 Sep 1995||19 Nov 1996||Vertebrex Golf L.L.C.||Golf club stabilizer and method of stabilizing a golf club|
|US5607364 *||21 Dec 1994||4 Mar 1997||Black & Decker Inc.||Polymer damped tubular shafts|
|US5655975 *||2 Nov 1995||12 Aug 1997||Roush Anatrol, Inc.||Golf club having vibration damping device and method for making same|
|US5692971 *||6 Mar 1996||2 Dec 1997||Williams; Danny R.||Shock absorbing insert and other sporting goods improvements|
|US5716289 *||21 Feb 1996||10 Feb 1998||Okoneski; Joseph R.||Weighting of golf clubs|
|US5718643 *||19 Jul 1996||17 Feb 1998||Karsten Manufacturing Corp.||Vibration dampening insert for golf clubs|
|US5904622 *||12 Sep 1997||18 May 1999||Dana Corporation||Driveshaft assembly with vented noise reduction structure|
|US5935027 *||28 Dec 1995||10 Aug 1999||Roush Anatrol, Inc.||Multi-mode vibration absorbing device for implements|
|US5964673 *||27 Jan 1997||12 Oct 1999||Hellerich & Brasby Co.||Hollow metal bat with stiffened transition zone and method of making same|
|US6042485 *||28 Jan 1998||28 Mar 2000||Harrison Sports, Inc.||Vibration damping device|
|US6117021 *||24 Dec 1997||12 Sep 2000||Cobra Golf, Incorporated||Golf club shaft|
|US6146291 *||16 Aug 1997||14 Nov 2000||Nydigger; James D.||Baseball bat having a tunable shaft|
|US6234911||12 Sep 1997||22 May 2001||Spicer Driveshaft, Inc.||Driveshaft assembly having a noise reduction structure|
|US6354958||11 Apr 2000||12 Mar 2002||David Meyer||Vibration damper for a golf club|
|US6582320 *||11 Feb 1999||24 Jun 2003||Edwin B. Fendel||Hybrid golf club shaft|
|US6729971 *||15 Aug 2002||4 May 2004||Ceramixgolf.Com||Golf club head with filled cavity|
|US6764414 *||21 Aug 2002||20 Jul 2004||Sumitomo Rubber Industries, Ltd.||Golf club shaft|
|US6837812||10 Sep 2003||4 Jan 2005||Thomas Falone||Vibration dampening grip cover for the handle of an implement|
|US6863629||10 Sep 2003||8 Mar 2005||Thomas Falone||Vibration damping tape|
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|US6880269||16 Oct 2001||19 Apr 2005||Sting Free Company||Athletic clothing with sting reduction padding|
|US6893366||10 Sep 2003||17 May 2005||Thomas Falone||Vibration dampening grip|
|US6935973||10 Sep 2003||30 Aug 2005||Sting Free Company||Vibration dampening material|
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|US6944974||5 Nov 2004||20 Sep 2005||Sting Free Company||Shoe insert formed of reinforced elastomer for regulating and dampening vibration|
|US7022029 *||15 Mar 2005||4 Apr 2006||Ceramixgolf.Com, Inc.||Golf club head with filled cavity|
|US7150113||5 Oct 2004||19 Dec 2006||Sting Free Technologies Company||Vibration dampening material and method of making same|
|US7171696||6 Dec 2004||6 Feb 2007||Sting Free Company||Athletic clothing with sting reduction padding|
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|US7444905||16 Feb 2007||4 Nov 2008||Bobby Hu||Wrench with reinforced hollow handle|
|US7686705 *||10 Sep 2007||30 Mar 2010||Golf Science Technology LLC||Golf club|
|US7895923||7 Jul 2008||1 Mar 2011||Bobby Hu||Wrench with reinforced hollow handle|
|US8142382||5 Oct 2004||27 Mar 2012||Matscitechno Licensing Company||Vibration dampening material and method of making same|
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|US8413262||17 Oct 2007||9 Apr 2013||Matscitechno Licensing Company||Sound dissipating material|
|US8419566 *||8 Jun 2010||16 Apr 2013||Eaton Corporation||Handle with changeable grip|
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|US20030176236 *||14 Mar 2003||18 Sep 2003||Fendel Edwin B.||Hybrid golf club shaft|
|US20030228817 *||17 Jun 2002||11 Dec 2003||Innercore Grip Company||Material adapted to dissipate and reduce vibrations and method of making same|
|US20030228819 *||7 Feb 2003||11 Dec 2003||Innercore Grip Company||Material adapted to dissipate and reduce vibrations and method of making same|
|US20040213979 *||1 Mar 2004||28 Oct 2004||Vito Robert A.||Material adapted to dissipate and reduce vibrations and method of making same|
|US20050102810 *||28 Dec 2004||19 May 2005||Bobby Hu||Method for making a wrench|
|US20050144698 *||22 Dec 2004||7 Jul 2005||Vito Robert A.||Vibration dampening material and method of making same|
|US20050148404 *||10 Jan 2003||7 Jul 2005||Georg Ignatius||Percussion instrument for games with a percussively or impact-moved play body|
|US20050159246 *||15 Mar 2005||21 Jul 2005||Caldwell Bruce G.||Golf club head with filled cavity|
|US20080098859 *||16 Feb 2007||1 May 2008||Bobby Hu||Wrench with reinforced hollow handle|
|USRE31811 *||10 Aug 1981||22 Jan 1985||Baseball bat with modified internal air pressure|
|EP0925811A1||22 Dec 1998||30 Jun 1999||Apollo Sports Holdings Ltd.||Shafts|
|WO1999002223A1 *||9 Jul 1998||21 Jan 1999||Lyle Smith||Plug for stressing golf club shaft|
|International Classification||A63B53/00, A63B59/00|
|Cooperative Classification||A63B53/00, A63B59/0092|