Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2846228 A
Publication typeGrant
Publication dateAug 5, 1958
Filing dateOct 20, 1955
Priority dateOct 20, 1955
Publication numberUS 2846228 A, US 2846228A, US-A-2846228, US2846228 A, US2846228A
InventorsReach Milton B
Original AssigneeReach Milton B
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Golf club of the "iron" type
US 2846228 A
Previous page
Next page
Description  (OCR text may contain errors)

M. B. REACH 2,846,228 GOLF CLUB OF THE "IRON" TYPE Filed Oct. 20, 19 55 VENTOR ATTORNEY United States Patent GOLF CLUB OF THE IRON TYPE Milton B. Reach, Springfield, Mass. Application October 20, 1955, Serial No. 541,615 9-Claims. (Cl. 273-169) game ofgolf are definitely restrictedin shape and style.

Custom and demand have imposed limitations in shape to such point that the front elevational shapes -of the blades have become largely standardized with the height of the blade progressively increasing from the heel" toward with-the toe generally rounded rather sharply where-it m'eets the upper edge of the bladeand'more gently where it"i'rnerges: with the sole of the blade, and. with a hitting surface virtually standardized as-regards face marking and loft; In an eif'ort to effect desired weight distributions and to createappealing style differences to individualize the numerous'products of different manufacturers, club designershave therefore resorted to varying the contours and 'shapes of the back surfaces of the blades. instances these variations have been arbitrary, and have merely concentrated weight at anundesirable location.

- ('5) Furthermore, custom and demand have established that thefore and aft cross section of the blade must be rather wedge shaped so that the sole=portion is relatively thickiwhile the upper edge of the blade-is relatively'thin. Asa result; inmost s'uchirons, much of themass of the blade-is positioned-near the sole of the blade, instead of near. the sweet spot-that lies approximately at the'center' of the'length and height of the blade, and that is usually marked on the blade face in some fashion, and it will be recognized that many ofthe modifications of back-face design that. have been proposed tend even further toconcentrate the weightof the head near the sole thereof. Now to-obtaina satisfying f'eelfi transferringminimum impact shock to the handsof the player, the center of percussion of the headportion of theclub, swinging about thecenter: of flexureand torque oftheshaft, should coincideeas nearly-as possible withthe sweetspot, and to'thisendritgisdesirable that-"more of the weight of the head bedocated close to the level'of the sweet spot. Yet the shape limitations imposed by custom and demand places a substantial obstacle in the way of attaining 'thisde sideratum' by alteration of back-face contours.

' (c) A-lso custom and demand has-largely standardized" thefacezangleor loft of the irons, which are designated as Number 1, No. 2, etc,.irons, as the face angle: or"

loft is increased, and the accepted standardization has more or: less prescribed the size as well as the shape and loft' ofeachnumber, and has prescribed a range'of" Weights foreach number'iron, that embraces'as'much as a'three-fourths: ounce difierence between a light and heavy iron of a particular number, with one or more medium, or medium-light, or medium-heavy weights therebetween: Thus the normalvariants in iron golf heads,

from light to 'heavy, have a range of about of an ounce iu' each of the iron sequences-No. 2 starting at a lighter the toe of the blade,

In many ice base then No. 3; and the'higher numbers-having shorter shafts, more pitch, and Wider focus-startingat increasingly heavier bases. For these reasons, manufacturers have been faced with the necessity of producing several Weight variants in'eachsize 0r number'of golf irons, and since' the .cost of forging dies is high, the conventional practice is to rough'forge' the head for a given number iron somewhat oversize as compared to the finished weight of a heavy ironof such number, and to then grind and polish each head'toa predetermined light, heavy or intermediate weight, which practice involves considerable skill to maintain the prescribed curvatures and ridges and adds greatly to the cost of the club.

Accordingto the present invention, these problems are met by providing a club-head that may be forged-with allldies set to produce the lightest base weight, in a simple forging, .and in which. the intermediate andheavy. weights ofthe club are obtained ina simple and efficient manner. in theassembly, or as a custom feature.

(d) A great number. of golf irons currently are made of stainless steel. This is a hard, tough metal, costly in dies and-costly in labor operations. Sharp ridges and angles, which characterize many of .todays designs, quickly wear the forging dies and complicate. the polishing and stampingl'abor of the finishing operation.

One of the aims of the-present invention is to enable said stainless steel, club-heads to be-produced by a simple. forging, without such sharp. ridges and angles, with consequent saving. of wear on the forging'dies, andttoenablesuch 'clubs to be finished to weight and. stampedor marked inta simple and inexpensive manner. While these-provisions are of particular value in connectionwith stainless: steel club heads,, theyalso contribute: to economy, to. a somewhat lesser, but percentagewise equally important extent, in the manufacture of cheaper clubs of softer, lower specific gravity steel, that are finishedby chrome plating;- and in the latter, connection. the invention.facil-- itates the attainingof proper club weight without undue bulk and without the inclusionof external reentrant angles difficult to-plate efi'iciently. Y i

Furthermore, when heads of metal of still less specific gravity become available, say of titanium, the heads may be die cast for economy, and by employing the features of the present invention, may be adjusted to proper. weight andi'feel without excessive departure from orthodox shapeand bulk;

(e). As above noted, the sweetnessof the-strokede pends to a considerable extent on having thecenter of; weight so locatedrelative tothepointof impact withrthe ball; thatlittl'e tendency toward sudden clockwise or coun terclockwise torquing of' the shaft, and little tendency to ward sudden longitudinalwave motion or vibration ofthe shaft is produced by the impact. If the .center of weight is too far toe-ward at impactthet-club. torques: counterc1ockwise, and as the. flattened-ball leaves theclubface, tends. to give 'it a hook 'producingspin; .if it is -too far: heelward; a. reverse, torquing, occurs,..tending togive the ball a"s1ice'' producing spin; if theweight is toolow; a torquel'is'produced' about the longitudinalfaxis of the club head, that creates a vibrational wavemotion traveling up the shaft; fiha lly, since the center with.respect totheshaft, the mass of the head, during the, swing, tends to force the shaft to bend inwardly towardthefeet of. the playeryand thus to establish av'contact point forward of the. centrifugal orbit of the club- Inconventional clubs; thetliiie-iofgravity,determined by a plumb linedropped from; thegrip center across the clubfface, crosses such face inward toward the -heel'of. the-club. However,- the nature ofthe shafting, whether,. fibre iglass,- or/- flexible, stilt, or of special design, effects the centrifugallyclub in play. The present invention in a simple manner enables the line of gravity of the club to be so related to the nature of the shafting as to bring the contact point more nearly on the sweet-spot and on the gravity orbit of the club in play, as will hereinafter appear.

(1) Again, as ball manufacturers continue to become more precise and the technique of rubber thread winding improves and produces harder, more controllable balls, there is more impact shock to the club and any off-center of the club weight relative to the point of impact produces greater torsional and vibratory shock to the hands and fingers of the user. Yet the club, to conform to custom and usage and to obtain proper distance must have a rigid striking face, and cannot be too resiliently attached to the shaft, as the delicate sense of feel and control is lost. Another advantage of the present invention in its preferred form resides in establishing the desired weight distribution and maintaining the rigidity of the strking face and the sense of feel and control, while arranging for. vibration damping action of a part of the weight of the head, with consequent reduction in the shock transmitted to the shaft. Especially near the end of a long session of, say 72 holes of play. the cumulative effect of shocks transmited through the shaft, commences to increase the subconscious tension of the player, and to interfere markedly with the sense of ease, looseness, and feel that determines accuracy and quality of play in the short game around the putting green. Hence even a percentagewise reduction of such shocks may make a great difference in the players ability near the end of a long session of play.

(g) Finally, the maintenance of a complete stock of light, medium, and heavy clubs in the entire number sequence requires a considerable investment. By the present invention clubs may be stocked in what might be termed skeleton form and may be made to order on the spot, reducing inventory and shipping costs, in addition to the savings in the cost of manufacture above mentioned. 7

These and other advantages and objects of the present invention are attained by the improvements hereinafter set forth. The invention resides in the novel features and combinations exemplified or described in connection with the illustrative embodiment shown in the accompanying drawings and is defined in the appended claims.

In the drawings of the illustrative embodiment:

Fig. l is a front elevation of a club head embodying the invention, taken normal to the back face of the club.

Figs. 2, 3 and 4 are respectively end elevation and sectional views at the lines 22, 33 and 44 of Fig. 1 in the direction of the arrows.

Figs. 5 and 6 are fragmentary rear elevation and sectional views at the lines 5-5 and 66 of Fig. 2, in the direction of the arows.

Figs. 7 and 8 are sectional views similar to Fig. 6

of modified construction.

Fig. 9 is a gravity line diagram.

The severalobjects and advantages of the invention, in the illustrative embodiment shown, are attained by forming the head for a given iron number, with a metal skeleton of generally conventional shape, but with a considerable area of its back face reentrantly deeply recessed, and somewhat lighter than the lightest weigh head for said club member. The recess is preferably of generally ovate shape and generally concentric with the shape of the back face of the club head. Secured in the ovate recess is a polyfunctional ovate filler member, that in the form shown carries stamping or marking on its outer face, the weight and weight distribution of which combines with the single head skeleton to produce a light, heavy or intermediate weight iron of given gravity orbit, and the resiliency of which, in the preferred embodiment, accomplishes a measure of shock absorption, particularly when the wall between the recess and the front face of the club is made relatively thin as compared to the area of the recess. When the filler is formed of weighted natural or synthetic rubber, as is preferred, it is preferably vulcanized to the walls of'the recess, and preferably has the club markings or trade mark, or both, lithographed or formed in intaglio or relief, on or in a metal or plastic plate that is secured by adhesive, vulcanization or other suitable means to the insert, which preferably has a beaded edge that embraces the plate and isolates it from contact with the metal of the head skeleton.

In the form shown in Figs. 1-4, the club head of the iron type, when completed, has the normal, accepted wedge shape with no excrescences or protuberances therefrom. It comprises a metal body including a conventional hosel 10 and a metal blade having the usual inclined front face 11, preferably having thereon suitable scoring 12, and a suitable target 13 marking the sweet spot or bent striking area of the blade face; the usual back face 14 of lesser inclination; the usual relatively wide sole area 15; and the usual narrower upper edge 16.

The metal club head body, however, is peculiar in that it has in its back face 14 a recess 20 of substantial area in which is secured a weighting means 21, that prefer-. ably fills the recess substantially flush with the back. face 14 of the club, defined by the marginal or framing portions of the metal body.

The recess 20, as best indicated in dotted lines in Figs. 1 and 2, has at the rear face 14 a generally ovate shape (see Figs. 5-8) that extends throughout a major part of the height of the back face and a major part of the length thereof, is generally concentric with the perimeter of the back face 14, and is framed by the marginal metal areas 14. As shown in Figs. 2, 3 and 4, the recess preferably flares outwardly toward the back face 14, which reduces the wear on dies, and has an inner wall 20a that generally parallels the front face 11 of the metal body, defining therewith an area that is relatively thin compared with its height and width. Such area, for example, may be approximately ,43 inch thick, and have a height averaging about /4 of an inch,

and a length of say, two to three inches.

The weighting means 21, as shown, is secured in the recess 20. 21 is composed of a natural or synthetic rubber matrix (specific gravity about 1.00) heavily loaded either throughout its body, or in predetermined parts thereof, with a heavy filler or particulate material, for example, litharge (yellow lead oxide, PbO, specific gravity about 9.37). With, say, a 70% loading of the litharge a composition is obtained having a specific gravity of about 9.1, which is considerably heavier than iron or steel (s. g. about 7.7) and even more weighty as compared to light metals such as titanium (s. g. 4.9). While other materials may be employed in the broader aspects of the invention, a resilient weighting means, and more especially a weighted rubber composition, is especially advantageous, as it may be bonded to the metal body by vulcanization or the like, and has the capability of absorbing impact shock transmitted to it by the'relatively thin area defined by the front face 11 and inner wall 20a, thereby measurably reducing the shock transmitted directly through the hosel 10 and shaft 30 (Fig. 9) to the hands and fingers of the player.

The weighting means 21, especially when formed of rubber composition, may be prefabricated in either vulcanizable or vulcanized condition, in weights that vary as much as A of an ounce between them, and may be assembled with the metal body and be secured therein by cementing or vulcanization to custom-fit a single, standard, metal body to the demand of the particular player for a light, intermediate, or heavy club of a particular number, or the vulcanizable composition may be supplied in pasty form and be filled into the cavity 20 with a In its preferred form the weighting means As above noted, the weighting element 21 is preferably provided with a marginal bead 21a (Figs. 35) and is face 14. When the weighted element 21 is of uniform composition, and of the shape shown in Figs. 1-5, a larger sweet spot, thus to reduce vibration of the shaft in the fingers.

While there have been described herein what are at present considered preferred embodiments of the invention, it will be obvious to those skilled in the art that range of equivalency of the claims are intended to be included therein.

I claim:

ing an inner wall spaced from the front face of the club head, said inner wall and front face defining an area 3. A golf club head according to claim 2, said resilient weight filling said recess to a point substantially flush with said back face.

4. A golf club head according to claim 1, said resilient ing compositions comprise moldable compositions and are molded into said recesses, the recesses serving as part of the molds.

References Cited in the file of this patent UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US550976 *Dec 10, 1895 Nings
US1455256 *Jan 19, 1922May 15, 1923Kroydon CoGolf club
US1968627 *Dec 31, 1931Jul 31, 1934Young Leonard ABalanced golf club head
US2429351 *Jan 1, 1944Oct 21, 1947Frank J Werner JrGolf club
US2447967 *Sep 16, 1944Aug 24, 1948Ridgely Stone WilliamGolf club
US2700248 *Jul 3, 1952Jan 25, 1955Margon CorpEye for dolls
US2741480 *Feb 4, 1953Apr 10, 1956Worthington Ball CompanyGolf ball
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3431802 *Nov 19, 1956Mar 11, 1969Schulpen Karel H NDevice for the manufacture of objects of yieldably deformable material
US3655188 *Jul 9, 1969Apr 11, 1972Solheim KarstenCorrelated golf club set
US3693978 *Nov 13, 1969Sep 26, 1972East VictorSymmetrical golf club head with center of gravity coincident with geometric center
US3749408 *Sep 13, 1971Jul 31, 1973Mills SGolf putter
US3751035 *Jul 2, 1971Aug 7, 1973J LockwoodSet of golf irons
US3814437 *Jan 30, 1973Jun 4, 1974S WinquistSymbolically reinforced golf club head
US3873094 *Mar 10, 1972Mar 25, 1975Alexander SeboPutter-type golf club
US3955820 *Jul 20, 1973May 11, 1976Acushnet CompanyGolf club head
US3961796 *Sep 27, 1974Jun 8, 1976Thompson Stanley CGolfing iron head with downwardly tapered keel
US3970236 *Jun 6, 1974Jul 20, 1976Shamrock Golf CompanyGolf iron manufacture
US3989248 *Feb 20, 1976Nov 2, 1976Pepsico, Inc.Golf club having insert capable of elastic flexing
US3995857 *Feb 11, 1976Dec 7, 1976Acushnet CompanyGolf club head
US3995858 *Feb 11, 1976Dec 7, 1976Acushnet CompanyGolf club head
US3995864 *Feb 11, 1976Dec 7, 1976Acushnet CompanyGolf club head
US3995865 *Feb 11, 1976Dec 7, 1976Acushnet CompanyGolf club head
US4027885 *Jul 19, 1976Jun 7, 1977Rogers Kenneth AGolf iron manufacture
US4139196 *Jan 21, 1977Feb 13, 1979The Pinseeker CorporationDistance golf clubs
US4200286 *Dec 9, 1977Apr 29, 1980Bennett Richard CSet of torque-balanced golf clubs
US4220336 *Feb 27, 1978Sep 2, 1980Kochevar Rudolph JExtrudable weight capsule
US4317568 *Mar 6, 1980Mar 2, 1982Green John RGolf club with reference plumb mark
US4355808 *Mar 27, 1981Oct 26, 1982Golf Division, Wood-Arts Company, Inc.Weighted, inlaid golf iron and method of making same
US4398965 *Aug 14, 1978Aug 16, 1983Pepsico, Inc.Method of making iron golf clubs with flexible impact surface
US4420156 *Mar 22, 1982Dec 13, 1983Pepsico, Inc.Iron-type golf clubs
US4621808 *Apr 2, 1985Nov 11, 1986Kimberly-Clark CorporationVisco-elastic weight
US4749197 *Mar 11, 1987Jun 7, 1988Orlowski David CGolf club
US4792139 *Aug 15, 1986Dec 20, 1988Yamaha CorporationGolf club head
US4798383 *Jan 21, 1986Jan 17, 1989Yamaha CorporationGolf club head
US4826172 *Mar 12, 1987May 2, 1989Antonious A JGolf club head
US4884812 *Oct 11, 1988Dec 5, 1989Yamaha CorporationGolf club head
US4992236 *Jan 16, 1990Feb 12, 1991Shira Chester SPowder metallurgy using different materials for various parts
US4995612 *May 31, 1989Feb 26, 1991Finney Clifton DGolf clubhead in a corner-back configuration
US5026056 *Aug 17, 1989Jun 25, 1991Tommy Armour Golf CompanyWeight-balanced golf club set
US5048834 *May 29, 1990Sep 17, 1991Dunlop Slazenger Corp.Iron type golf club head
US5048835 *May 29, 1990Sep 17, 1991Dunlop Slazenger Corp.Weighted golf club head
US5060950 *May 25, 1990Oct 29, 1991Finney Clifton DCorner-back golf clubhead
US5074563 *Dec 12, 1990Dec 24, 1991Dunlop Slazenger CorporationIron type weighted golf club head
US5083778 *Jun 27, 1990Jan 28, 1992Douglass Michael BGolf club putter head
US5197737 *May 31, 1990Mar 30, 1993Taylor Made Golf CompanyPutter head
US5242167 *Aug 18, 1992Sep 7, 1993Antonious A JPerimeter weighted iron type club head with centrally located geometrically shaped weight
US5267733 *Aug 3, 1992Dec 7, 1993Szokola Dennis WGolf putter
US5316298 *Apr 14, 1993May 31, 1994Skis Rossignol S.A.Golf club head having vibration damping means
US5333872 *Jan 21, 1993Aug 2, 1994Hillerich & Bradsby Co., Inc.Golf club irons having improved weighting
US5377985 *Jul 20, 1993Jan 3, 1995Sumitomo Rubber Industries, Ltd.Head for iron type golf club
US5405136 *Sep 20, 1993Apr 11, 1995Wilson Sporting Goods Co.Golf club with face insert of variable hardness
US5407202 *Nov 3, 1992Apr 18, 1995Igarashi; Lawrence Y.Golf club with faceplate of titanium or other high strength, lightweight metal materials
US5409229 *Sep 13, 1993Apr 25, 1995Callaway Golf CompanyGolf club head with audible vibration attenuation
US5411255 *Aug 2, 1993May 2, 1995Sumitomo Rubber Industries, Ltd.Golf club head
US5423546 *Jun 15, 1994Jun 13, 1995Hillerich & Bradsbry Co., Inc.Golf club irons having improved weighting
US5437447 *Jul 20, 1993Aug 1, 1995Rigutto; Martin A.Golf putter
US5464218 *Jul 7, 1994Nov 7, 1995Callaway Golf CompanyGolf putter head with undercut back cavity and peripheral weighting
US5522593 *May 19, 1994Jun 4, 1996Kabushiki Kaisha Endo SeisakushoGolf club head
US5588922 *Dec 12, 1994Dec 31, 1996Callaway Golf CompanyIron golf club head with forwardly divergent interior recess
US5588923 *Apr 6, 1995Dec 31, 1996Callaway Golf CompanyGolf club head with attached selected swing weight composite
US5595548 *Feb 15, 1995Jan 21, 1997Northrop Grumman CorporationMethod of manufacturing golf club head with integral insert
US5605511 *Dec 6, 1994Feb 25, 1997Callaway Golf CompanyGolf club head with audible vibration attenuation
US5626530 *Jun 7, 1995May 6, 1997Callaway Golf CompanyGolf club head with sole bevel indicia
US5637045 *Jun 2, 1995Jun 10, 1997Igarashi; Lawrence Y.Hollow wood-type golf club with vibration dampening
US5643111 *Jul 13, 1995Jul 1, 1997Igarashi Lawrence YGolf clubs with elastomeric vibration dampener
US5658208 *Jul 17, 1995Aug 19, 1997Bridgestone Sports Co., Ltd.Golf club head
US5669825 *Feb 1, 1995Sep 23, 1997Carbite, Inc.Method of making a golf club head and the article produced thereby
US5674133 *Jun 10, 1996Oct 7, 1997Sung Ling Golf & Casting Co., Ltd.Structure of golf club head
US5692972 *Mar 29, 1996Dec 2, 1997Langslet; Eric B.Vibrationally damped golf club head
US5697855 *Dec 15, 1995Dec 16, 1997Daiwa Seiko, Inc.Golf club head
US5704849 *Apr 25, 1995Jan 6, 1998Callaway Golf CompanyGolf club head with audible vibration attenuation
US5707302 *Feb 29, 1996Jan 13, 1998Leon; Joseph A.Iron-style golf club
US5749794 *Aug 31, 1995May 12, 1998Kabushiki Kaisha Endo SeisakushoGolf club head
US5776010 *Jan 22, 1997Jul 7, 1998Callaway Golf CompanyWeight structure on a golf club head
US5810682 *Jan 29, 1996Sep 22, 1998Carruthers; Andrew D.Hockey stick blade pad
US5924939 *Dec 31, 1997Jul 20, 1999Cobra Golf IncorporatedGolf club head with a strike face having a first insert within a second insert
US5944619 *Sep 6, 1996Aug 31, 1999Acushnet CompanyGolf club with an insert on the striking surface
US6045456 *Jan 23, 1998Apr 4, 2000Cobra Golf IncorporatedGolf club with improved weighting and vibration dampening
US6117022 *Oct 6, 1994Sep 12, 2000Stx LlcLightweight golf club with elastomeric head
US6159109 *Oct 7, 1997Dec 12, 2000Langslet; Eric B.Vibrationally damped golf club head
US6200229 *May 11, 1999Mar 13, 2001Cobra Golf IncorporatedStrike face of a golf club head with integral indicia and border
US6210290Jun 11, 1999Apr 3, 2001Callaway Golf CompanyGolf club and weighting system
US6231458Dec 23, 1998May 15, 2001Acushnet CompanyGolf club head with an insert on the striking surface
US6290607Apr 5, 1999Sep 18, 2001Acushnet CompanySet of golf clubs
US6334818Jan 22, 1999Jan 1, 2002Acushnet CompanyGolf club head with an insert on the striking surface
US6379263Dec 29, 2000Apr 30, 2002Callaway Golf CompanyGolf club and weighting system
US6482104Jun 26, 2000Nov 19, 2002Acushnet CompanySet of golf clubs
US6533679Apr 6, 2000Mar 18, 2003Acushnet CompanyHollow golf club
US6554722Feb 19, 2002Apr 29, 2003Callaway Golf CompanyGolf club head
US6592469Jan 25, 2001Jul 15, 2003Acushnet CompanyGolf club heads with back cavity inserts and weighting
US6719641 *Apr 26, 2002Apr 13, 2004Nicklaus Golf Equipment CompanyGolf iron having a customizable weighting feature
US6835144 *Nov 7, 2002Dec 28, 2004Acushnet CompanyGolf club head with filled recess
US6843733Apr 2, 2003Jan 18, 2005Mizuno CorporationCavity back golf club having a multi-tiered weight distribution configuration
US6860819Nov 12, 2002Mar 1, 2005Achushnet CompanySet of golf clubs
US6902495Jul 27, 2001Jun 7, 2005Wilson Sporting Goods Co.Golf club vibration dampening and sound attenuation system
US6929563 *Apr 25, 2003Aug 16, 2005Bridgestone Sports Co., Ltd.Iron type golf club head
US7153219Jun 14, 2004Dec 26, 2006Adams Golf Ip, L.P.Golf club head
US7303486Feb 2, 2005Dec 4, 2007Bridgestone Sports Co. LtdGolf club head
US7316623Mar 1, 2005Jan 8, 2008Bridgestone Sports Co., Ltd.Golf club head
US7384348 *Jun 28, 2006Jun 10, 2008O-Ta Precision Industry Co., Inc.Golf club head
US7390270Jul 26, 2005Jun 24, 2008Roger Cleveland Golf Company, Inc.Muscle-back, with insert, iron type golf club head
US7481719Sep 28, 2007Jan 27, 2009Bridgestone Sports Co., Ltd.Golf club head
US7563176Oct 29, 2007Jul 21, 2009Roger Cleveland Golf Company, Inc.Muscle back, with insert, iron type golf club head
US7591735 *May 18, 2006Sep 22, 2009Bridgestone Sports Co., Ltd.Golf club head
US7597633Jun 13, 2006Oct 6, 2009Bridgestone Sports Co., Ltd.Golf club head
US7611423 *May 16, 2006Nov 3, 2009Bridgestone Sports Co., Ltd.Golf club head
US7621822 *Sep 1, 2006Nov 24, 2009Acushnet CompanyIron golf club with improved mass properties and vibration damping
US7637823Jun 26, 2006Dec 29, 2009Bridgestone Sports Co., LtdGolf club head
US7686707May 17, 2006Mar 30, 2010Bridgestone Sports Co., Ltd.Golf club head
US7789771Feb 15, 2008Sep 7, 2010Sri Sports LimitedGolf club head
US7815524Feb 17, 2006Oct 19, 2010Pelican Golf, Inc.Golf clubs
US7892106 *Dec 31, 2008Feb 22, 2011Sri Sports LimitedIron-type golf club head and golf club set
US7938738Nov 19, 2009May 10, 2011Cobra Golf IncorporatedIron golf club with improved mass properties and vibration damping
US8057322Dec 24, 2008Nov 15, 2011Sri Sports LimitedGolf club head
US8083610Jun 4, 2009Dec 27, 2011Sri Sports LimitedMuscle-back, with insert, iron type golf club head
US8126687Apr 3, 2009Feb 28, 2012Bridgestone Sports Co., Ltd.Method of identifying an antinode of a primary vibration mode of a golf club head
US8152651Apr 25, 2011Apr 10, 2012Cobra Golf IncorporatedIron golf club with improved mass properties and vibration damping
US8157670 *Aug 6, 2009Apr 17, 2012Nike, Inc.Golf club head or other ball striking device having face insert material
US8187117Aug 28, 2009May 29, 2012Sri Sports LimitedGolf club head
US8192301Jul 16, 2010Jun 5, 2012Sri Sports LimitedGolf club head
US8267807Jul 29, 2010Sep 18, 2012Bridgestone Sports Co., Ltd.Iron golf club head
US8328660Dec 8, 2011Dec 11, 2012Sri Sports LimitedMuscle-back, with insert, iron type golf club head
US8366567May 4, 2012Feb 5, 2013Sri Sports LimitedGolf club head
US8419568Dec 8, 2011Apr 16, 2013Sri Sports LimitedMuscle-back, with insert, iron type golf club head
US8430766 *Jul 29, 2008Apr 30, 2013Sri Sports LimitedGolf club head
US8449405 *Apr 16, 2010May 28, 2013Karsten Manufacturing CorporationClub heads with multiple density weighting and methods of manufacturing the same
US8454452Jun 10, 2011Jun 4, 2013Sri Sports LimitedGolf club head
US8480512Apr 16, 2012Jul 9, 2013Nike, Inc.Golf club head or other ball striking device having face insert material
US8632421Dec 27, 2012Jan 21, 2014Sri Sports LimitedGolf club head
US8715105May 29, 2009May 6, 2014Nike, Inc.Golf club head having an interchangeable bridge member
US20100317461 *Apr 16, 2010Dec 16, 2010Karsten Manufacturing CorporationClub Heads With Multiple Density Weighting And Methods Of Manufacturing The Same
US20120329570 *Sep 10, 2012Dec 27, 2012Nike, Inc.Golf Club Head Having a Bridge Member and a Damping Element
US20130196785 *Jan 31, 2013Aug 1, 2013Bridgestone Sports Co., Ltd.Golf club head
U.S. Classification473/332, 473/350
International ClassificationA63B53/04, A63B59/00
Cooperative ClassificationA63B53/04, A63B59/0092
European ClassificationA63B53/04