Patent Application
20130225311
This application generally relates to sets of golf clubs including at least one adjustable club to provide a set with no distance gap.
A set of golf clubs will typically include 14 clubs, each intended for hitting the golf ball a certain range. For example, a golfer may have a driver, a 2 wood, a 5 wood, 3-9 irons, 3 wedges, and a putter. The variations are as numerous as the temperaments of the players. Some golfers will have a driver, a wood, a hybrid, six irons, four wedges, and a putter.
Drivers are used for very long shots—drives—off the tee whereas wedges are used for short shots. With a given club, a golfer will be able to reliably make good shots over a certain range of distances. While the precise numbers will vary from golfer to golfer, Table 1 lists an exemplary set of golf clubs and, for each, shows the distance range within which the club will perform reliably for the golfer.
As can be seen from Table 1, club designers have engineered clubs that, taken as a set, provide reliable performance over a wide range of distances.
However, Table 1 lists 15 clubs and PGA rules allow 14 clubs in a set. So choosing a set of golf clubs requires choosing a range of distances for which your clubs provide poor coverage. For example, many golfers will choose to have all the clubs listed in Table 1 but the 5 wood. The hypothetical golfer of Table 1, leaving behind their 5 wood, would have no club well-suited to 200 yard shots.
Some golfers may try to fill their distance gap by using a hybrid. Table 1 shows an exemplary club set including two hybrids, and a set of ranges that a hypothetical golfer may be able to reliably hit the ball using those clubs.
As can be seen in Table 2, this set has a problematic gap for shots that must travel 165 to 175 yards. Table 3 shows another exemplary set that a golfer may employ.
The set shown in Table 3 is plagued by a gap at 175 to 185 yards.
Thus, for many golfers, a set of clubs inherently defines a gap in the distances that their shots can cover. This gap has been described as the ‘distance gap’. The persistence of the distance gap problem is evidenced by the tips that golfers exchange on the course, “Choke up on the handle of your 5 wood to take 5 yards off!” or, “Strengthen your grip on your 4 iron to add 5 yards.”
The invention provides a set of golf clubs in which at least one of the clubs is adjustable so that it can provide a golfer with reliable shots over a broad range, or over two ranges, of distance. An adjustable club may include a mechanism for adjusting the loft between at least a first and a second effective loft setting. The invention exploits the dimensions of a contoured sole that prevent unintended or undesired changes in face angle when a golfer switches between a first and a second loft setting. The contoured sole generally presents a stabilizing element towards the ground so that, when the club is held at address resting on the ground, the stabilizing element provides the point of contact with the ground. Clubs without such a stabilizing element flop between two different face angles when they are switched between two different lofts, making them unreliable for shots covering the full range of distances potentially associated with the multiple loft settings. Since an adjustable club of the invention does not flop between undesired face angles when the loft is adjusted, the club will be reliable for shots covering the full range of distances associated with multiple loft settings. Thus, an adjustable club can be included in a golfer's golf bag, the adjustable club having two (or more) effective loft settings, and that club can play double-duty in terms of the ranges of shot distances it is reliably useful for. In this way, the golfer's bag can contain fourteen clubs that cover all desired ranges between the putter and the driver.
In certain aspects, the invention provides a set of golf clubs, each having an extended shaft with a club head and a grip on opposing ends. At least one club of the set is an adjustable club in that it has an adjustment mechanism operable to provide two or more effective loft settings. Further, the face angle is stabilized by a stabilizing mechanism that gives the club the same face angle while having any of the two or more effective loft settings. The stabilizing mechanism can be, for example, a pad protruding from a sole of the club by a height H, having a maximum length L, a maximum width W, and a setback S from a front-most point on the club face the club is at address, wherein S is more than about 1 mm, L is more than about 1 mm, W is more than about 1 mm, and H is more than about 0.1 mm. In certain embodiments, H is between about 0.3 mm and about 2 mm, and in some embodiment S is between about 1 cm and about 3 cm, L is between about 2 cm and about 13 cm, W is between about 1 mm and about 3 cm, and H is between about 0.5 mm and about 1.2 mm. When the adjustable club is held at address in any of the two or more effective loft settings, the club head makes contact with the ground only within the stabilizing element. A number of different clubs within a set—i.e., drivers, woods, hybrids, and irons, can be adjustable and stabilized in this way.
In certain aspects, the invention provides a set with an adjustable club that includes a face, a sole, a crown, and a hosel, such that when the club is at address and resting on horizontal ground: a fore plane intersects the ground along a line substantially parallel to the face and a distance S from the front of the club—the fore plane being tangent to the sole and defining an angle of X degrees with the ground; a back plane intersects the ground along a second line parallel to the line and a distances (S+W) from the front of the club—the back plane being tangent to the sole and defining an angle of Y degrees with the ground; and the sole makes contact with the ground between the first and second line, and X+Y is between about 0.01° and about 40°. The setback distance S can be between about 5 mm and about 70 mm. The width W can be between about 0.1 mm and about 45 mm. In certain embodiments, X+Y is larger than the difference in lofts of settings of an adjustable loft club (e.g., between about 5° and about) 25°.
In certain embodiments, the adjustable club is configured to be connected to a shaft in a first configuration giving a first loft setting and a second configuration giving a second loft setting. Due to the shape of the sole, the adjustable club tends to balance with a certain face angle when held at address in the first loft setting resting on a horizontal planar surface, and tends to balance with the same certain face angle when held at address in the second loft setting resting on a horizontal planar surface.
In some embodiments, the first loft is between about 4° and about 23° and the second loft is between about 11° and about 25°, such that if the club is held at address in the first configuration, it balances with a neutral face angle and if the club is held at address in the second configuration, it balances with a neutral face angle. In some embodiments, X+Y is between about 2.5° and about 8°, S is between about 1 mm and about 5 cm, and W is between about 6 mm and about 15 mm.
Accordingly, the set may include a number N of clubs configured to provide a number N+1 of distinct loft angles, each of the distinct loft angles being at least 1° different from any other.
In certain aspects, the invention provides a method of providing a set of golf clubs, the method including receiving information identifying a golfer, a first club with a first loft and first hitting range, and a second club with a second loft and second hitting range, the hitting ranges defining distances associated with the ability of the golfer to make reliable shots with the associated club. With this information, one identifies a distance gap comprising a range of distances between the first and the second hitting range and determines a third loft intermediate to the first and second loft. Then, one may select from a list an adjustable club with an adjustment mechanism operable to confer on the adjustable club the first loft or the third loft and provide a set comprising the second club and the adjustable club. The method may be implemented through the use of a computer, either within a store or other facility or over the Internet. Thus in some embodiments, the method includes saving the information to a tangible, non-transitory memory operably coupled to a processor in a computer apparatus and using the processor in the identifying, determining, and selecting steps. In certain embodiments, the information is received over an Internet connection after having been input by a person using a web browser and the set is provided in the form of a list of clubs, the list being delivered electronically over the Internet connection to the web browser. By these means, a firm may offer to sell the adjustable club to the golfer and receiving an acceptance of the offer from the golfer. Due to the fact that an adjustable club of the invention allows one club head form-factor to provide a variety of lots, and thus an inventory tracking system requires fewer entries and tables for a full product line, a computer-implemented system and method of providing a club set is conducive to providing customized clubs (i.e., using the now “freed up” SKUs of the inventory tracking system to flexibly store custom order information pertaining to parts, colors, trim levels, etc.). Accordingly, in some embodiments, the method further comprises receiving a selection from the golfer of an option for a customizable feature of the adjustable club and selling the customized adjusted club to the golfer.
The invention generally provides a set of golf clubs, each having a shaft with a club head and a grip on opposing ends. At least one club of the set is an adjustable club in that it has an adjustment mechanism operable to provide two or more effective loft settings. The adjustable club may include a stabilizing mechanism that gives the club the same face angle while having any of the two or more effective loft settings. By these means, the club can play (at least) “double duty” in a golfer's set. This way, a golfer can get clubs suited for 15 different types of shots out of 14 individual clubs. Table 4 lists an exemplary club set made to include an adjustable hybrid.
While generally presented here in terms of the longer-range clubs (e.g., woods, hybrids, and irons), any club can be made adjustable. Further, the tables presented herein are illustrative of ranges that some one hypothetical golfer may get out of their personal set of clubs, and it will be appreciated that the invention provides the operative idea of a set of clubs for any golfer, whatever range values obtain for that golfer for their clubs personally. Thus, the specific ranges shown herein are not limiting and merely illustrate the operation of the inventive concept.
For example, some golfer out there may derive great satisfaction from their 3 wood and their 5 wood. This golfer may normally forgo the use of a 3 iron, and thus have a problematic distance gap between their 4 iron and their 5 wood. Making use of an adjustable club of the invention, this hypothetical golfer may solve this problem by equipping themselves with an adjustable hybrid having a 25° loft angle and a 22° loft angle, and leaving behind both their 3 iron and their 4 iron. This golfer's golf bag would then include the clubs listed in Table 5.
To contrast the example given with respect to Table 5, some other golfer may personally prefer to not use hybrids. This other golfer has traditionally gone to the course without a 5 wood, instead just carrying a 3 wood, a 3 iron, a 4 iron, and so on. This golfer may now obtain an adjustable wood according to the invention, the adjustable wood providing the role of a 3 wood and a 5 wood. This golfer's set is represented as now listed in table 6.
The ability of a club head of the invention to provide two or more reliable ranges for a given golfer relates to the provision of a stabilizing element, generally protruding from the sole of a club. The invention proceeds from the insight that prior art adjustable clubs provided poor playability due to poor control over face angle when a loft angle was adjusted.
When a club is at address resting on a surface, grip point 187 and contact point 42 together define an axis around which motion of the golf club is relatively unrestrained. If balance line 161 intersects the sole behind the contact point, the club will rock open. If balance line 161 intersects the sole in front of the contact point, the club will rock closed.
Thus, the invention provides club head 101 having a sole with a contour or feature such that, if the club is held at address in a variety of orientations, then the contact point is within a controlled, limited distance from the point at which the balance line intersects the sole. Accordingly, the club can be held at address, yet in two different orientations at different times. For example, a first address position can be offset from a second address position by a slight tilt (e.g., either in a heel-toe direction, a fore-aft direction, or a combination thereof) and the contact point will be within the contour or feature in each address positions. In some embodiments, the sole is configured such that, when a golf club including the club head is held at address in either of a first or second position, the club head makes contact with a surface only within a stabilizing element as described herein.
Thus the invention allows a club to be held in different address positions (e.g., as a player learns or experiments, due to ground inconsistencies, as one club is used by players of different height) and obtain a consistent, predictable club head orientation. Due to the fact that the club head makes contact with the ground within a controlled region below the club balance point, the club will not “rock” into unintended orientations when held at address resting on a surface.
In certain embodiments, the invention provides club head 101 having a sole with a contour or feature such that, if the club head is set in a variety of loft settings, then the contact point is within a controlled, limited distance from the point at which the balance line intersects the sole. Club head 101 can have an adjustable loft capable of being set in at least a first and second position. With the loft set in either of the first or second position, the club head can rest on the feature in one of at least a first and second disposition allowing a player to grip the club with a comfortable, relaxed grip in each position and with the face angle maintained constant between each position.
The invention allows a player to adjust a loft setting, hold the club at address resting on a surface, and obtain a consistent, predictable face angle. This benefit gives a player a reliable reference point when setting up a shot in that the player can rest the club head on a surface and see the loft setting and the face angle (while the player holds the club with a comfortable, relaxed grip). The player can then grip the club and pick it up to make a shot, thereby obtaining the same relative face angle for every shot.
As shown in
As shown in
For the purposes of describing region 107 according to the discussion below, a rear sole boundary 213 is defined as a plane a distance E back from aft boundary 211 that is the same as a distance E between fore boundary 205 and face-sole boundary 203. The rear-most point of club head 101 defines a vertical plane at the back 217 of the head, parallel to the plane at the front 201 of the head, and both orthogonal to plane 251.
Generally a club head 101 may have a transition between a face and a sole having length T (e.g., a rounded region, angled region, stepped region, or sharp region). Face-sole boundary 203 marks an edge between that transition and the substantially downward-facing sole. Rear sole boundary 213 is defined as the same distance E from aft boundary 211 as the distance E between fore boundary 205 and face-sole boundary 203. Fore-aft line 255, perpendicular to front plane 201 and lying along ground plane 251 through a club contact point 42 can be used to measure these distances.
Turning now to
As shown in
A length or extent E of fore sole 302 can be defined as a setback S of region 107 minus a length T of the face-sole transition. Alternatively, an extent E of fore sole 302 can be defined as an arbitrary measurement forward from fore boundary 205. Alternatively, in some embodiments, an extent E of fore sole 302 is equal to a width W of region 107. An extent E of aft sole 502 is, by definition, equal to an extent E of fore sole 302.
When club head 101 is at address, the average distance of fore sole 302 and aft sole 502 along fore-aft line 255 from ground plane 251 is shown by average sole height line 444. The vertical distance between height line 444 and ground plane 251 can define a height H of region 107.
Region 107 can be described with reference to a length L measured in a heel-toe direction.
Thus, according to the foregoing discussion, club head 101 according to embodiments of the invention generally has a protruding region 107 on the sole having a width W, a height H, and a length L, and being spaced away from the face of the club by a setback S.
Generally, S is greater than about 0.5 cm, L is more than about 0.5 cm, W is more than about 0.5 mm, and H is more than about 0.1 mm. In certain embodiments, S is between about 2.5 cm and about 3.5 cm; L is between about 2.5 cm and about 12 cm; W is between about 3 mm and about 25 mm; and H is between about 0.3 mm and about 2 mm. For example, S can be between about 2.8 cm and about 3.3 cm; L can be greater than about 1 cm; W can be between about 9 mm and about 20 mm; and H can be between about 0.1 mm and about 3 mm. Any combination of measurements disclosed herein is within the scope of the invention. For example, in certain embodiments, S is more than about 2.5 cm; L is greater than about 1 cm; W is between about 9 mm and about 20 mm; and H is between about 0.3 mm and about 2 mm.
Golf club head 101 having region 107 according to embodiments of the invention exhibits desirable behaviors, particularly an adjustable loft that does not affect the face angle when the club is at address.
As shown in
Without being bound by any theory of operation,
As shown in
As discussed above, region 107 can be described with reference to length, width, height, and setback. Independently or additionally region 107 can be described according to other aspects of club head 101. Club head 101 will generally exhibit certain geometric properties as described herein.
Fore boundary 205 intersects ground plane 251 defining an intersection line. A front plane 403 intersects this line at a setback distance S from the front of the club, defining a fore angle 703 of X degrees with the ground. Front plane 403 is tangent to the sole.
Aft boundary 211 intersects ground plane 251 along a line. A back plane 407 intersects this line and is tangent to the sole. Back plane 407 defines a back angle 707 of Y degrees with ground plane 251.
When club head 101 is at address and resting on a plane 251, the sole makes contact with the surface within region 107 and X+Y is greater than 0°. In certain embodiments, X+Y is between about 0.01° and about 40°. Setback S and width W can each independently be any measurement. For example, setback S can be between about 5 mm and about 80 mm. Width W can be between about 1 mm and about 60 mm. Preferably, S is between about 20 mm and about 40 mm, e.g., between about 30 mm and about 35 mm, while W is between about 5 mm and about 30 mm, e.g., between about 5 mm and about 15 mm or between about 15 mm and about 25 mm. Preferably X+Y is between about 3° and about 23° (e.g., between about 5° and about 12°).
In a preferred embodiment, where club head 101 is part of a club having a loft that is adjustable from a minimum loft P to a maximum loft Q, the following will hold:
(X+Y)≧(Q−P) (1)
As shown in equation 1, fore angle 703 and back angle 707 together preferably define a range equal to or greater than the total range of adjustable loft for club head 101. Accordingly, in certain embodiments, a golf club is provided in which the loft can be set at two or more effective settings including a setting at about 8.5° loft and a setting at about 11.5° (range of adjustable loft is at least about 3°), and a sole of the club head has a region 107 with boundaries that define a front plane 403 and a back plane 407 (both tangent to the sole) creating angles with the ground that together are at least about 3°.
Region 107 of club head 101 will generally satisfy at least one of the foregoing descriptions. A variety of embodiments are provided by the invention. For example,
In some embodiments, region 107 is provided by a separate component. For example,
In another example,
In another example,
In various embodiments, region 107 is provided on drivers, hybrids, woods, and irons.
By providing a club head including a stabilizing element of the invention, a club can be made to provide a golfer with two or more reliable ranges for shot distances. To illustrate, a golfer may include in their bag the fourteen clubs listed in Table 7 to take advantage of the invention.
The set shown in Table 7 includes an adjustable hybrid having at least two loft settings: 29° and 25°.
Golf rules generally allow fourteen clubs in a bag. Many golfers experience a distance-gapping problem only among or within certain parts of their sets. In some embodiments, the invention solves a golfer's distance-gapping problem by providing a set of golf clubs including fewer than fourteen clubs (e.g., two clubs, three clubs, four clubs, . . . ) for the golfer to use with other of their clubs to fill their bag. One insight of the invention is that the beneficial results of the set include the results provided by replacing the club that is “adjacent” to the distance-gap in a golfer's range list. Thus there is great value to many golfers in providing a set of two or three clubs, at least one of which is an adjustable club according to the invention.
For example, a golfer having the clubs listed in Table 1 may purchase a set including an adjustable wood and two adjustable hybrids. This golfer may then use this new set of adjustable clubs instead of their 3 wood, 5 wood, 3 iron, and 4 iron, to arrive at the clubs listed in Table 8.
That is to say, a set of clubs according to the invention can be fewer than 14 or 14 clubs. Table 9 gives another exemplary set of 14 clubs according to the invention.
In certain embodiments, a wood is provided in which the loft can be set at two or more effective settings including a setting at about 13° loft and a setting at about 16° (range of adjustable loft is at least about 3°), and a sole of the club head has a region 107 with boundaries that define a front plane 403 and a back plane 407 (both tangent to the sole) creating angles with the ground that together are at least about 3°. In certain embodiments, a hybrid is provided in which the loft can be set at two or more effective settings including a setting at about 16° loft and a setting at about 25° (range of adjustable loft is at least about 9°), and a sole of the club head has a region 107 with boundaries that define a front plane 403 and a back plane 407 (both tangent to the sole) creating angles with the ground that together are at least about 9°. In certain embodiments, an iron is provided in which the loft can be set at two or more effective settings and a sole of the club head has a region 107 with boundaries that define a front plane 403 and a back plane 407 (both tangent to the sole) creating angles with the ground that together are at least the difference between the two effective settings.
The inventive method of providing a set of golf clubs can be employed to beneficially improve a golfer's game. The method includes receiving information about a golfer and the hitting ranges with the golfer's clubs. With this information, one identifies a distance gap in the golfer's hitting ranges.
Then, one may select an adjustable club of the invention that covers the golfer's distance gap. A set of clubs including the selected club is provided to the golfer. Table 10 shows an exemplary set that may be provided to a hypothetical golfer by methods of the invention.
The method may be implemented through the use of a computer, either within a store or other facility or over the Internet. Thus in some embodiments, the method includes saving the information to a tangible, non-transitory memory operably coupled to a processor in a computer apparatus and using the processor in the identifying, determining, and selecting steps.
In certain aspects, the invention provides methods and systems for making, shipping, stocking, and selling golf clubs requiring only a single club head that satisfies consumer demand for different lofts and aesthetic features. For each of a plurality of customers, a golf club can be provided having a selected color, graphical depiction, loft, and/or face angle.
Due to the fact that a single club head of the invention can provide a club with a variety of features, such as color, graphics, and settings for loft or face angle, a store can stock fewer different club heads than would be required if only prior art club heads were available. Thus the invention allows for a configurable golf club to be provided that allows, for example, a store to sell golf clubs having a large number of configurations while only stocking a small number of club heads, shafts, and related hardware.
Accordingly, a golf club head having a sole with region 107 according to embodiments of the invention is provided for use with reconfigurable and interchangeable combinations of golf club parts (e.g., shafts, heads, ferrules, etc.). Mechanisms and methods for setting different club configurations are described in Interchangeable Shaft System, U.S. Pub. 2009/0197694; Interchangeable Shaft System, U.S. Pub. 2009/0264214; Interchangeable Shaft System, U.S. Pat. No. 7,699,717; Interchangeable Shaft System, U.S. Pub. 2011/0143854; Interchangeable Shaft and Club Head Connection System, U.S. Pat. No. 7,878,921; Interchangeable Shaft and Club Head Connection System, U.S. Pub. 2010/0261543; Interchangeable Shaft and Club head Connection System, U.S. Pub. 2009/0247316; Quick Release Connection System for Golf Clubs, U.S. Pub. 2008/0125239; Two-Part Hosel Connection System for Golf Clubs, U.S. Pub. 2008/0254909; and Interchangeable Shaft for a Golf Club, U.S. Pat. No. 7,476,160, the contents of each of which are herein incorporated by reference in their entirety.
Due to the fact that a club head of the invention prevents unwanted deviations from an intended orientation when held at address in different positions, a club head having a sole with region 107 according to embodiments of the invention is provided for use with any golf club (i.e., clubs that are not interchangeable, adjustable, or reconfigurable, as well as those that are). The invention provides a club head that can be permanently affixed to a shaft as well as other non-adjustable clubs.
Due to the fact that a club head of the invention enables a supplier (e.g., a store, pro-shop, wholesaler, sales rep, manufacturer, etc.) to offer a wider variety of clubs while stocking fewer independent parts, the invention provides the ability for a supplier to carry a greater variety of parts as defined by some other property, such as color, model, or trim level. For example, because a supplier can fit a customer with a driver having any loft and face angle using a single club head, a certain driver type can be provided for a large variety of customers using only a single stock-keeping unit (SKU) in a database or inventory system of the supplier. This means, relative to a supplier not using a club head of the invention, a large number of SKUs are “freed up” and can be used for other products. Similarly, a large amount of display space and storage space in the supply chain is likewise made available. Thus, these freed up resources can be used to provide clubs having, for example, a variety of colors.
Club heads of the invention enable suppliers to provide a variety of different clubs (e.g., requiring different SKUs, for example, one for each different color), where before, suppliers were limited to using those resources (SKUs and space) to carry enough versions of a single club head to satisfy the fitting requirements of a number of different customers.
The invention results in unexpected efficiencies in the manufacturing process because a club head can be brought to market having a variety of fits with only one form factor, a single manufacturing tool (e.g., mold) is required, thus lowering the cost of bringing a product to market. The single manufacturing tool can be used to produce club heads having a variety of colors, finishes, or “trim levels.” Generally, trim level includes a brand name, decorative element, functional accessories, price, or combination thereof. For example, a driver may be sold having a single club head, but given both an SE and LE (e.g., “special edition” and “luxury edition”) trim level, including silver stripes and a rubber grip on the SE model while having gold stripes, leather grip, and electronic components on the LE model. Also, the single manufacturing tool can be used to produce club heads having a variety of colors.
Because club heads that fit a variety of golfers can be made with a single tool, resources are freed to make club heads in a variety of colors and, more specifically, color can be provided in smaller runs, e.g., changed on a batch-by-batch basis. In some embodiments, the invention provides a set of club heads having a shared form factor and in a variety of colors. Club heads can be primary and secondary colors, fluorescent colors, regular or irregular patterns (e.g., plaid, speckled, tie-dyed, marbleized). Club heads can be made in limited runs having a distinctive color (e.g., the trademark color of a partnering luxury goods manufacturer or the trademark stripes or plaid pattern of a corporate partner).
Due to the fact that a manufacturer can offer a whole line of a particular club (e.g., a particular driver) to fit a variety of customers, by providing a single head, and that the color can be varied easily among the heads, manufacturers can offer distributors great flexibility and extensibility in the colors they offer to their customers. Due to this flexibility and extensibility, in certain embodiments, a retail store can offer clubs in small lots having truly customized colors. For example, a golf team or group can be provided with a set of clubs in which all of the club heads match the official colors of the group.
The invention provides personalized or customized color heads. Since all of a club head for a particular club can be provided by a single tool, manufacturing resources are greatly freed up by the invention. Thus, a manufacturer can repurpose its available resources, for example, to provide personalized customized color. In certain embodiments, a customer may choose a color (e.g., from a book, through an HTML color picker, etc.) or provide information about a color (e.g., provide a specimen, Pantone number, etc.) and a manufacturer can produce one or more club heads having the corresponding color.
A club head can be made having region 107 by any method known in the art. Club head 101 can be molded, cast, forged, or assembled from components by adhesives, welding, snap-fit, press-fit, or any other method known, or combination of any of the foregoing. Exemplary clubs and methods of making them are discussed in Multi-Piece Golf Club head with Improved Inertia, U.S. Pub. 2010/0056297; Golf Club Head with Moveable Insert, U.S. Pub. 2010/0105499; Golf Club Head, U.S. Pat. No. 7,803,065; Metal Wood Golf Club Head, U.S. Pub. 2008/0227564; Golf Club Head With Multi-Component Construction, U.S. Pub. 2011/0152003; Golf Club Heads, U.S. Pub. 2011/0151989; Method of Making Golf Clubs, U.S. Pub. 2011/0277313; and Method of Making Golf Clubs, U.S. Pub. 2010/0298065, the contents of each of which are hereby incorporated by reference in their entirety. Club head 101 can have any combination of one or more rib, weight, or other structural element beneficial to playability of the club.
A club head of the invention can include additional weights or moveable (e.g., rotatable or sliding) or interchangeable weight members, for example, to optimize a center of gravity or a moment of inertia of club head 101. Any method known in the art can be used to add adjustable weight or further functionalize club head 101. Rotatable members are described in Adjustable Golf Club, U.S. Pat. No. 2,593,368; Club Head with Movable Weight, U.S. Pat. No. 3,589,731; Weight Adjusting Structure of Golf Club Head, U.S. Pub. 2009/0215551; and Golf Club Head with Moveable Insert, U.S. Pub. 2010/0105499 (see, e.g.,
References and citations to other documents, such as patents, patent applications, patent publications, journals, books, papers, web contents, have been made throughout this disclosure. All such documents are hereby incorporated herein by reference in their entirety for all purposes.
Various modifications of the invention and many further embodiments thereof, in addition to those shown and described herein, will become apparent to those skilled in the art from the full contents of this document, including references to the scientific and patent literature cited herein. The subject matter herein contains important information, exemplification and guidance that can be adapted to the practice of this invention in its various embodiments and equivalents thereof.
This application is a continuation-in-part of U.S. patent application Ser. No. 13/407,011, filed Feb. 28, 2012, the contents of which are hereby incorporated by reference in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 13407011 | Feb 2012 | US |
| Child | 13565146 | US |
