The present invention relates generally to golf clubs and golf club heads. Particular example aspects of this invention relate to golf clubs and golf club heads having multi-part interchangeable rear body members.
In recent years, golf club heads and golf clubs have been designed to improve a golfer's accuracy by assisting the golfer in squaring the club head face at impact with a golf ball. A number of golf club heads have at least some weight of the golf club head positioned so as to alter or control the location of the club head's center of gravity. The location of the center of gravity of the golf club head is one factor that determines whether a golf ball will be propelled in the intended direction. When the center of gravity is positioned behind the point of engagement on the contact surface, the golf ball follows a generally straight route. When the center of gravity is spaced to a side of the point of engagement, however, the golf ball may fly in an unintended direction and/or may follow a route that curves left or right, ball flights that often are referred to as “pulls,” “pushes,” “draws,” “fades,” “hooks,” or “slices.” Similarly, when the center of gravity is spaced above or below the point of engagement, the flight of the golf ball may exhibit more boring or climbing trajectories, respectively.
While the industry has witnessed dramatic changes and improvements to golf equipment in recent years, some players continue to experience difficulties in reliably hitting a golf ball in an intended and desired direction and/or with an intended and desired flight path. This is particularly true for clubs used to hit the ball long distances, such as drivers and woods. Accordingly, there is room in the art for further advances in golf club technology.
Golf club heads, and particularly wood-type golf club heads (e.g., drivers, fairway woods, wood-type hybrid clubs, or the like), according to at least some example aspects of this invention include: (a) a club head body made from one or more parts, wherein the club head body includes a heel portion, a toe portion, a top portion, a sole portion, a striking face, and a rear portion opposite the striking face, wherein the club head body defines an interior cavity, and wherein the rear portion defines at least a first opening to the interior cavity; and (b) a rear body made from one or more parts, wherein the rear body is releasably engaged with the club head body and is configured to at least partially cover the first opening. The rear body member may be releasably engaged with the rear face and/or other portion of the club head body.
Additional aspects of this invention relate to golf club structures that include golf club heads, e.g., of the types described above. Such golf club structures further may include one or more of: a shaft member attached to the club head (optionally via a separate hosel member or a hosel member provided as an integral part of one or more of the club head or shaft); a grip or handle member attached to the shaft member; additional weight members; etc.
Still additional aspects of this invention relate to methods for making golf club heads and golf club structures in accordance with examples of this invention. Such methods may include, for example: (a) providing a golf club head or club head body of the various types described above, e.g., by manufacturing or otherwise making the golf club head, by obtaining the golf club head from another source, etc.; (b) engaging a shaft member with the golf club head; (c) engaging a grip member with the shaft member; (d) engaging a weight member with the golf club head; and/or (e) engaging a rear body member with the rear portion and/or other portion of the club head body or club structure; etc.
Still other aspects of this invention relate to golf clubs and golf club heads having a rear body member formed of at least two rear body parts. The at least two rear body parts may have equal or substantially equal weight, weight distribution, density, size, shape, and/or other characteristics, or each of the at least two rear body parts may have different weights, weight distributions, densities, sizes, shapes, and/or other characteristics. In some arrangements, the rear body member may include three or more rear body parts, thereby permitting additional flexibility in the weight distribution associated with the rear body member.
The present invention is illustrated by way of example and not limited in the accompanying figures, m which like reference numerals indicate similar elements throughout, and in which:
The reader is advised that the various parts shown in these drawings are not necessarily drawn to scale.
The following description and the accompanying figures disclose features of golf club heads and golf clubs in accordance with examples of the present invention.
Aspects of this invention relate to golf club heads and golf clubs including such club heads (e.g., drivers, fairway woods, wood-type hybrid clubs, or the like). Golf club heads according to at least some aspects of this invention may include: (a) a club head body made from one or more parts, wherein the club head body includes a heel portion, a toe portion, a top portion, a sole portion, a striking face, and a rear portion opposite the striking face, wherein the club head body defines an interior cavity, and wherein the rear portion defines at least a first opening to the interior cavity; and (b) a rear body made from one or more parts, wherein the rear body is releasably engaged with the club head body and is configured to at least partially cover the first opening. The rear body may be releasably engaged with the club head body (e.g., the rear portion and/or other portion(s) of the club head body). Any desired portion of the rear body member may be engaged with the club head body. In some embodiments, a portion of the rear body member may extend into a cavity defined in the club head body (e.g., at least some portion, all, or at least a major portion of the rear body member may be located within the rear body member receiving cavity). In other embodiments, at least a portion of the rear body member may extend beyond the exterior perimeter surface of the rear portion of the club head body. Additionally, if desired, the rear body member may form at least a portion of the golf club head's crown and or sole when attached to the main club head body. Alternatively, in some embodiments, the rear body member will not form any portion of the crown and or sole. Using different releasably engageable rear body members may allow for the modification of the overall size, shape, weight, weight distribution, center of gravity, moment of inertia and/or other characteristics of the golf club head. In certain aspects of the invention, the rear body member may provide an overall conventionally shaped golf club head (e.g., having a rounded rear perimeter portion) while, in other embodiments, the rear body member may provide a more modem club head appearance (e.g., having rear and/or side portions that provide a more square or rectangular overall club head shape).
The rear body receiving cavity, when present, may be provided at any desired location(s) in the rear portion of the club head body without departing from this invention. In some examples, the opening to this rear body receiving cavity may extend beyond the rear portion to the sole and/or the crown of the club head body. Additionally or alternatively, the rear body receiving cavity may extend beyond the rear portion of the club head body to the heel and/or toe portions of the club head body. In some embodiments, the rear body receiving cavity may have a depth of at least 5 millimeters, at least 7 millimeters, or at least 10 millimeters at its deepest location. Additionally, the cross-section of the cavity may be of many shapes including, in some embodiments, cross-sections that are square, rectangular, hemispherical, trapezoidal, etc. One or more rear body receiving cavities and/or one or more rear bodies may be provided in an overall golf club head structure without departing from this invention.
The club head body also may include one or more openings to its interior cavity. In embodiments of the invention with multiple openings, the multiple openings may be substantially adjacent to each other or they may be separated by solid portions of the rear portion of the club head body. In certain aspects of the invention, the golf club head may include multiple rear body members or a rear body member comprised of multiple parts or portions. In some embodiments, the golf club head may include at least two rear body members or at least three body members. The opening(s) to the interior cavity may be located and/or arranged anywhere along the rear portion of the club head body without departing from this invention.
The club head body also may take on a variety of forms without departing from this invention. For example, the club head body may be made from any desired number of different parts, of any desired construction, from any desired materials, etc., without departing from this invention, including from conventional parts, of conventional constructions, and/or from conventional materials as are known and used in the art. In some example structures, the club head body will include one or more of the following parts: a crown, a sole, a face member (optionally including a ball striking face integrally formed therein or attached thereto), one or more body members (e.g., forming or defining the periphery of the club head between the crown and sole), a sole plate, a frame member (optionally of metal, such as titanium alloys or the like, e.g., forming or defining the periphery of the club head between the crown and sole and/or to which one or more of the crown and/or the sole (if present) are engaged, etc.), an aft body, etc. The club head body may include: one or more metal or metal alloy parts (e.g., a frame, optionally including or engaged with the ball striking face, a face member, etc.), such as stainless steel, titanium or titanium alloys, aluminum or aluminum alloys, magnesium or magnesium alloys, etc.; polymeric materials (e.g., for the crown or sole, for the club head body portions between the crown and sole, for the face member, etc.); composite materials, including fiber or particle reinforced composite materials, such as carbon fiber composite materials, basalt fiber composite materials, fiberglass materials, etc. (e.g., for the crown or sole, for the club head body portions between the crown and sole, for the face member, etc.); etc. Any desired structure and/or arrangement of the club head body structure and/or its various parts may be used without departing from this invention.
Also, any desired construction for the rear body member may be used without departing from the invention. If desired, the rear body member may be releasably engaged with the rear portion and/or other portion of the golf club head in any desired manner without departing from this invention, including through the use of mechanical connectors, retaining member structures, spring-loaded connectors and/or retaining structures, and the like. More specific examples of rear body members and their engagement with the remainder of a club head body are described below.
Additional aspects of this invention relate to golf club structures that include golf club heads, e.g., of the types described above. Such golf club structures further may include one or more of: a shaft member attached to the club head (optionally via a separate hosel member or a hosel member provided as a part of one or more of the club head and/or shaft); a grip or handle member attached to the shaft member; an additional weight member attached to one or more of the club head body, shaft, or grip; multiple rear body members; etc.
Still additional aspects of this invention relate to methods for making golf club heads and golf club structures in accordance with examples of this invention. Such methods may include, for example: (a) providing a golf club head of the various types described above (including any or all of the various structures, features, and/or arrangements described above), e.g., by manufacturing or otherwise making the golf club head, by obtaining it from a third party source, etc.; (b) engaging a shaft member with the golf club head; (c) engaging a grip member with the shaft member; (d) engaging different rear bodies or rear body members with the club head body; etc.
Additional aspects of this invention relate to methods of using golf club heads, e.g., of the various types described above. Such methods may include, for example, securing the rear body member at various positions and/or orientations along the club head body, e.g., the central rear portion, the toe portion, the heel portion, etc.; removing the rear body member from the club head body; placing a new rear body member (or a new portion thereof) on the club head body; etc. In this manner, golf clubs and golf club heads in accordance with examples of this invention may be customized, e.g., to better fit or conform to a specific user's swing characteristics, to help correct or compensate for various swing flaws (e.g., to correct hooks, slices, etc.), to bias a club for specific types of ball flights (e.g., a draw bias, a fade bias, a low flight bias, a high flight bias, etc.), and the like. Golf club heads and/or golf clubs according to at least some examples of the invention also may be used by club fitters to find desired or optimal weighting characteristics for specific users, and if desired, such characteristics may be used in selecting parts, arranging weights, and/or weighting for a final, permanently weighted club structure.
Still other aspects of the invention relate to golf club heads including a club head body formed from one or more parts. In some examples, the club head body may include a heel region, a toe edge, a sole portion, a striking face, and a rear portion opposite the striking face. The club head body may, in some arrangements, define at least a first opening to an interior cavity. The golf club head may further include a rear body member connected to the rear portion of the club head body at the first opening to the interior cavity. The rear body member may, in some examples, include a first rear body portion connected to the club head body in the rear portion. In some arrangements, the first rear body portion has a first weight. The rear body member may further include a second rear body portion connected to the club head body in the rear portion. In at least some examples, the second rear body portion has a second weight different from the first weight.
Additional aspects of the invention relate to golf club heads including a club head body formed from one or more parts, the club head body including a heel region, a toe edge, a sole portion, a striking face, and a rear portion opposite the striking face. In some examples, the golf club head may further include a rear body member connected to the rear portion of the club head body. The rear body member may, in some arrangements, extend beyond a perimeter of the club head body. The rear body member may include a first rear body portion connected to the rear portion along or near the toe edge of the club head body, and a second rear body portion connected to the rear portion in the heel region of the club head body.
Still additional aspects of the invention relate to golf clubs including a shaft and a golf club head connected to a first end of the shaft. In at least some examples, the golf club head may include a club head body having a toe edge, a heel region, a ball striking face and a rear portion opposite the ball striking face. In some arrangements, the club head body may form a first club head footprint. The golf club may further include a rear body member connected to the rear portion of the club head body, the rear body member enlarging the first club head footprint.
Given the general description of various example aspects of the invention provided above, more detailed descriptions of various specific examples of golf clubs and golf club head structures according to the invention are provided below.
The following discussion and accompanying figures describe various example golf clubs and golf club head structures in accordance with the present invention. When the same reference number appears in more than one drawing, that reference number is used consistently in this specification and the drawings to refer to the same or similar parts throughout.
Example golf club and golf club head structures in accordance with this invention may constitute “wood-type” golf clubs and golf club heads, e.g., clubs and club heads typically used for drivers and fairway woods, as well as for “wood-type” utility or hybrid clubs, or the like. Such club head structures may have little or no actual “wood” material and still may be referred to conventionally in the art as “woods” (e.g., “metal woods,” “fairway woods,” etc.). The club heads may include a multiple piece construction and structure, e.g., including one or more of a sole member, a face member (optionally including a ball striking face integrally formed therein or attached thereto), one or more body members (e.g., material extending around the perimeter and making up the club head body), a crown member, a face plate, a face frame member (to which a ball striking face may be attached), an aft body, etc. If desired, various portions of the club head structure may be integrally formed with one another, as a unitary, one piece construction, without departing from the invention (e.g., the body member(s) may be integrally formed with the sole and/or crown members, the face member may be integrally formed with the sole, body, and/or crown members, etc.). Optionally, if desired, the various portions of the club head structure (such as the sole member, the crown member, the face member, the body member(s), etc.) individually may be formed from multiple pieces of material without departing from this invention (e.g., a multi-piece crown, a multi-piece sole, etc.). Also, as other alternatives, if desired, the entire club head may be made as a single, one piece, unitary construction, or a face plate member may be attached to a one piece club head aft body (optionally, a hollow body, etc.). More specific examples and features of golf club heads and golf club structures according to this invention will be described in detail below in conjunction with the example golf club structures illustrated in
The shaft member 106 may be received in, engaged with, and/or attached to the club head 102 in any suitable or desired manner, including in conventional manners known and used in the art, without departing from the invention. As more specific examples, the shaft member 106 may be engaged with the club head 102 via a hosel member 104 and/or directly to the club head structure 102, e.g., via adhesives, cements, welding, soldering, mechanical connectors (such as threads, retaining elements, or the like), etc.; through a shaft-receiving sleeve or element extending into the club head body 102; etc. In some examples, the club head/shaft connection may include an “off-axis” or angled bore hole or interior chamber in which the shaft 106 (optionally a straight shaft) is received. More specifically, an outer cylindrical surface of the connection member may extend in a first axial direction, and an interior cylindrical surface of the bore hole may extend in a second axial direction that differs from the first axial direction. In this manner, while the shaft connection member exterior maintains a constant axial direction corresponding to that of the interior of the club head hosel and its opening, the shaft 106 extends away from the club head 102 at a different and, in some examples, adjustable angle with respect to the club head 102 and its ball striking face. Additional aspects of this off-axis arrangement are described in U.S. application Ser. No. 11/846,370 filed Aug. 28, 2007 and entitled “Releasable and Interchangeable Connections for Golf Club Heads and Shafts,” which is incorporated herein by reference in its entirety. Other releasable and/or adjustable golf club head and shaft connection structures and assemblies may be used without departing from this invention.
The shaft member 106 also may be made from any suitable or desired materials, including conventional materials known and used in the art, such as graphite based materials, composite or other non-metal materials, steel materials (including stainless steel), aluminum materials, other metal alloy materials, polymeric materials, combinations of various materials, and the like. Also, the grip or handle member 108 may be attached to, engaged with, and/or extend from the shaft member 106 in any suitable or desired manner, including in conventional manners known and used in the art, e.g., using adhesives or cements; via welding, soldering, adhesives, or the like; via mechanical connectors (such as threads, retaining elements, etc.), including releasable mechanical connectors; etc. As another example, if desired, the grip or handle member 108 may be integrally formed as a unitary, one-piece construction with the shaft member 106. Additionally, any desired grip or handle member 108 materials may be used without departing from this invention, including, for example: rubber materials, leather materials, rubber or other materials including cord or other fabric material embedded therein, polymeric materials, and the like.
The club head 102 itself also may be constructed in any suitable or desired manner and/or from any suitable or desired materials without departing from this invention, including from conventional materials and/or in conventional manners known and used in the art. For example, in the example structure 102 shown in FIGS. IA and 1B, the club head 102 includes a ball striking face member 102a (optionally including a ball striking face plate 102b integrally formed with the face member 102a or attached to club such that the face plate 102b and a frame member together constitute the overall face member 102a). The club head 102 of this illustrated example further includes a crown 102c, a sole 102d, and at least one body portion 102e located between the crown or top portion 102c and the sole 102d (e.g., material extending from the face member 102a, around the club head periphery from the heel to the toe). This body portion 102e, which extends to a location substantially opposite the striking face, may include a rear portion of the club head structure.
A wide variety of overall club head constructions are possible without departing from this invention. For example, if desired, some or all of the various individual parts of the club head 102 described above may be made from multiple pieces that are connected together (e.g., by welding, adhesives, or other fusing techniques; by mechanical connectors; etc.). The various parts (e.g., crown 102c, sole 102d, and/or body portion(s) 102e) may be made from any desired materials and combinations of different materials, including materials that are conventionally known and used in the art, such as metal materials, including lightweight metal materials. More specific examples of suitable lightweight metal materials include steel, titanium and titanium alloys, aluminum and aluminum alloys, magnesium and magnesium alloys, etc.
As additional examples or alternatives, in order to reduce the club head 102 weight, if desired, one or more portions of the club head structure 102 advantageously may be made from a composite material, such as from carbon fiber composite materials that are conventionally known and used in the art. Other suitable composite or other non-metal materials that may be used for one or more portions of the club head structure 102 include, for example: fiberglass composite materials, basalt fiber composite materials, polymer materials, etc. As some more specific examples, if desired, at least some portion(s) of the crown member 102c may be made from composite or other non-metal materials. Additionally or alternatively, if desired, at least some portion(s) of the sole member 102d may be made from composite or other non-metal materials. As still additional examples or alternatives, if desired, one or more portions of the club head's body member 102e (the region of material extending between the crown 102c and the sole 102d) may be made from composite or other non-metal materials. As yet further examples, if desired, the entire body portion of the club head aft of a club head face member 102a (also called an “aft body”), or optionally the entire club head, may be made from composite or other non-metal materials without departing from this invention. The composite or other non-metal material(s) may be incorporated as part of the club head structure 102 in any desired manner, including in conventional manners that are known and used in the art. Reducing the club head's weight (e.g., through the use of composite or other non-metal materials, lightweight metals, metallic foam or other cellular structured materials, etc.) allows club designers and/or club fitters to selectively position additional weight in the overall club head structure 102, e.g., to desirable locations to increase the moment of inertia, affect the center of gravity location, and/or affect other playability characteristics of the club head structure 102 (e.g., to draw or fade bias a club head; to help get shots airborne by providing a low center of gravity; to help produce a lower, more boring ball flight; to help correct or compensate for swing flaws that produce undesired ball flights, such as hooks or slices, ballooning shots, etc.; etc.).
The various individual parts that make up a club head structure 102, if made from multiple pieces, may be engaged with one another and/or held together in any suitable or desired manner, including in conventional manners known and used in the art. For example, the various parts of the club head structure 102, such as the face member 102a, the ball striking plate 102b, the crown 102c, the sole 102d, and/or the body portion(s) 102e may be joined and/or fixed together (directly or indirectly through intermediate members) by adhesives, cements, welding, soldering, or other bonding or fusing techniques; by mechanical connectors (such as threads, screws, nuts, bolts, or other connectors); and the like. If desired, the mating edges of various parts of the club head structure 102 (e.g., the edges where members 102a, 102b, 102c, 102d, and/or 102e contact and join to one another) may include one or more raised ribs, tabs, ledges, or other engagement elements that fit into or onto corresponding grooves, slots, surfaces, ledges, openings, or other structures provided in or on the facing side edge to which it is joined. Cements, adhesives, mechanical connectors, finishing material, or the like may be used in combination with the raised rib/groove/ledge/edge or other connecting structures described above to further help secure the various parts of the club head structure 102 together.
The dimensions and/or other characteristics of a golf club head structure according to examples of this invention may vary significantly without departing from the invention. As some more specific examples, club heads in accordance with at least some examples of this invention may have dimensions and/or other characteristics that fall within the various example ranges of dimensions and/or characteristics of the club heads described in U.S. patent application Ser. No. 11/125,327 filed May 10, 2005 (and corresponding to U.S. Published Patent Appln. No. 2005-0239576 A1 published Oct. 27, 2005). Note, for example, the Tables in these documents. This U.S. patent publication is entirely incorporated herein by reference. In accordance with at least some example club head structures according to this invention, the ratio of the breadth dimension (i.e., overall dimension “B” in the front to back direction) to length dimension (i.e., overall dimension “L” from in the heel to toe direction) (i.e., ratio “B/L”) will be at least 0.9, and in some examples, this ratio may be at least 0.92, at least 0.93, at least 0.94, at least 0.95, at least 0.96, at least 0.97, or even at least 0.98. The length dimension L may be at least 4 inches, and in some examples, at least 4.25 inches, at least 4.5 inches, at least 4.75 inches, or even at least 4.85 inches. The club head may have any desired volume, including, for example, a volume of at least 200 cc, and in some examples at least 350 cc, at least 400 cc, at least 420 cc, or even at least 450 cc.
The savings in weight of the club head 102 structure by having a cavity and/or opening 210 may provide certain advantages for modifying club head characteristics. Some advantages may include the ability to use the weight savings to distribute additional weight at selected other locations in the club head 102 structure and the ability to visually access and inspect the interior of the club head 102. In some embodiments, strategic placement of weight in certain locations on the rear body (or other locations in the club structure) may be used to bias the club to launch balls with a preselected flight trajectory, such as a fading flight pattern, a drawing flight pattern, a higher trajectory flight pattern, a lower trajectory flight pattern, etc.
In alternative embodiments, as shown in
While
A wide variety of other ways of securing the rear body member 310 in place with respect to the remainder of the club head 102 structure are possible without departing from this invention. For example, if desired, the remainder of the club head 102 structure and/or the rear body member 310 may be provided with extending surfaces (such as detent mechanisms, spring mounted projections, ridges, etc.) that fit into corresponding and/or mating openings, slots, grooves, or the like provided in the other member. Any way of securing and releasing the rear body member 310 to the remainder of the club head 102 structure may be used without departing from this invention, including, for example: friction fits, clamps, clasps, mechanical connectors, cam structures, retaining member/groove or opening structures, spring loaded mechanisms, etc.
As illustrated in
Distributing weight at different places by using a rear body member 310 may allow users or club fitters to affect the flight of balls propelled using club heads 102 and golf clubs 100 in accordance with these examples of the invention. For example, it is typically easier for at least some users to get a golf ball airborne using a club head 102 having significant weight located lower and toward its rear (e.g., a rear body member 310 with the majority of its weight extending beyond the back of the club head 102 and toward the sole 102d). Such weight positioning also may be used to provide a higher, more lofted golf ball flight path, at least for some users. Under some play conditions and/or for some swing types, however, this higher flight bias and/or ball flight path may not be desirable. For example, to produce lower, more boring ball flights, e.g., for play in windy conditions, or for swing flaws that typically produce an excessively high, ballooning ball flight, a rear body member 310 may include a portion that extends into the interior cavity of the club head 102, such that more weight is positioned forward, toward the ball striking face.
In another possible embodiment of the invention, the surface of the rear body member 310 that is adjacent to or inserted into the rear body member receiving cavity of the club head 102 may include mating portions (e.g., projections and/or receptacles therefore) that, when the rear body member 310 is secured to the remainder of the club head 102 structure, may extend into openings located between and/or in the beams 230. Alternatively, or in addition, the rear body member 310 and/or the remainder of the club head 102 structure may include mating portions (male and/or female), which may help to securely hold the rear body member(s) 310 in place within the rear body member receiving cavity of the club head 102.
The slot, groove, or opening 334 may take on any desired size or shape, and it may be provided at any desired position or location in the club head structure (e.g., in the sole 102d, in the crown 102c, in the rear face 102e, in the rear body member 310, etc.) without departing from this invention. Also, if desired, the club head 102 structure, including any individual part thereof (e.g., the rear body member 310, the sole 102d, etc.), may include more than one slot, groove, or opening 334 for receiving weight members 346. Also, any number of separate and individual weight members 346 may be mounted in the various slots, grooves, or openings 334 without departing from this invention (e.g., one slot, groove, or opening 334 may include any desired number of weight members 346, including zero, one, two, or more). In the example structure illustrated in
If desired, one or more weight members 346 may be directly engaged with the slot, groove, or opening 334 of the club head 102 structure as shown in the example illustrated in
The weight cartridge member 342 of this example structure in
The weight cartridge member 342 may be secured with the rear body member 310 at any desired time in the club head manufacturing process without departing from this invention. In some embodiments, the weight cartridge member 342 is attached to the rear body member 310 before the rear body member 310 is attached to the remainder of the golf club head 102 structure. Other construction techniques are possible, such as attachment of the weight cartridge member 342 to the rear body member 310 after the rear body member 310 is engaged with the remainder of the club head 102 structure. Also, if desired, the weight cartridge member 342 need not be secured only to the rear body member 310. Also, the weight cartridge member 342 may be provided in other portions of the club head 102 structure, such as in the crown 102c and/or the sole 102d, and optionally not in the rear body member 310, without departing from this invention. Any number of weight cartridge members 342, at any desired locations in an overall club head 102 structure, may be used without departing from this invention.
With further reference to
In some arrangements, the materials, weight characteristics, etc. of the rear body member portions may be determined and/or selected based on desired performance characteristics of the golf club head.
Alternatively, the second rear body portion 410b may be heavier or more dense than the first rear body portion 410a to alter the performance characteristics of the golf club head 402 (i.e., affect the flight path of a ball struck with the golf club). In order to adjust the weight associated with each rear body portion 410a, 410b, the rear body parts 410a, 410b may be formed of different materials. For instance, one or more of the rear body parts 410a, 410b may be formed of a composite material, such as carbon fiber composite. In other arrangements, one or more of the rear body parts 410a, 410b may be formed of a polymer material. In still other examples, one or more of the rear body parts 410a, 410b may be formed of a polymer material and may include a powder material that may be heavier than the polymer to add additional weight to one or more rear body parts 410a, 410b. For instance, the polymer may be loaded with tungsten-containing powder or flakes to add additional weight to the rear body portion 410a, 410b. Other materials may be used to add additional weight to one or more rear body parts 410a, 410b, such as any other metallic material, including steel, lead, or any other material with a density higher than the base material (e.g., base polymer material). This loading of the polymer with a heavier material powder may be used in conjunction with an additional weight member, such as weight member 346 in
In at least some examples, the rear body parts 410a, 410b may be formed using known molding techniques, such as injection molding, two shot molding, etc. to result in point-loading of the weight member, e.g., a weight formed in a particular area of one or more rear body parts 410a, 410b. For instance,
Rear body parts 410a, 410b may be formed such that they are interchangeable within the golf club head 402. That is, rear body portion 410a may be replaced at the toe end 403 of the club head 402 with rear body portion 410b from the heel end 405, and vice versa. As such, the shape of the rear body parts 410a, 410b and respective connecting structures to the golf club head 402 can be configured wherein the rear body parts 410a,410b are not required to be rotated about an axis to be interchangeable between the toe end 403 and heel end 405 or so that the portions 410a,410b are required to be rotated in order to fit within the opening at the rear portion. In still other examples, additional rear body parts of varying weight, density, size, shape, weight distribution, etc. characteristics may be provided and may be interchanged with rear body parts 410a and 410b as desired (e.g., provided as part of a “kit” or as separately marketed items available to the consumer). In some examples, the rear body parts 410a, 410b may be between 8 and 75 grams each. However, other ranges are possible without departing from the invention. The rear body parts 410a, 410b may be connected to the golf club head 402 using various methods of connection, such as mechanical fasteners, as described in more detail above.
Similar to the arrangements discussed above, the golf club head 402 may define an interior cavity 411. The golf club head 402 may further include one or more openings 460 to the interior cavity 411 to which the rear body member 410 may be connected. As discussed above, the one or more openings 460 may include various connecting portions or support beams to which one or more rear body parts 410a, 410b may be connected.
In some examples, different regions of each rear body portion 410a, 410b may be heavier than other regions. For instance, the first rear body portion 410a may be positioned near a toe edge or end 403 of the golf club head 402 and an end of the first rear body portion 410a most proximal the toe edge or end 403 of the golf club head 402 may be heavier or denser than an end of the first rear body portion 410a most distal the toe end 403 of the golf club head 402. Additionally or alternatively, the second rear body portion 410b may have an end most proximal the heel region or end 405 of the golf club head 402 that is heavier or denser than an end of the second rear body portion 410b most distal the heel region or end 405 of the golf club head 402. Other weighted region arrangements are possible. This positioning of additional weight, or distribution of the weight associated with the rear body parts 410a, 410b, to a rear edge of the golf club head 402 near a toe end 403 and a heel end 405 may aid in stabilizing the golf club head 402 to produce straighter, more stable shots.
In other arrangements, the first and second rear body parts 510a, 510b may be of equal or substantially equal weight which may be less than the weight associated with the third rear body portion 510c in order to concentrate a portion of the weight in a central portion of the rear of the golf club head 502. In still other arrangements, the three rear body parts 510a-510c may each be of different weights and/or weight distributions. Other examples may include the first rear body portion 510a and third rear body portion 510b each having a weight or density greater than the second rear body portion 510b in order todistribute a greater portion of the weight associated with the rear body member 510 near a toe end 503 of the golf club head 502.
Various other weight, weight distribution, density, size, shape, and other characteristics of the rear body parts 510a-510c may be used in conjunction with the arrangements describes herein without departing from the invention. Additionally or alternatively, the size or length of the rear body parts 510a-510c may vary. For instance, the length of the third rear body portion 510c may be longer or shorter than illustrated in
Similar to the arrangements discussed above, golf club head 502 may further include one or more openings 560 to an interior cavity 511 defined by the golf club head 502. The one or more openings 560 may include one or more connecting portions or support beams to which one or more of rear body parts 510a-510c may be connected.
Some example golf club heads according to aspects described herein may include rear body member(s) having multiple rear body parts that extend beyond the perimeter of the golf club head. For instance, as shown in
Further, the rear body member may alter the overall shape, size, etc. of the golf club head. For instance, as shown in
While various structures and techniques are described above (e.g., rear body members with different weight distributions mounted to the remainder of the golf club head structure in various ways) in conjunction with various specific structures shown in
Weight adjustable golf club heads of the types described above may be used by golfers, on the golf course, for their regular play (users can maintain the ability to modify the weight settings and/or customize the club head to their swing characteristics). As another example, however, golf club heads in accordance with at least some examples of this invention (e.g., of the types described above) also may be useful for club fitting purposes. For example, by providing club heads with different rear body members of the types described above, club fitters and/or users can quickly adjust the playing characteristics of a club head by adjusting or interchanging the rear body members used and/or provided with the club head. In this manner, a user being fit for new clubs and/or club components can quickly try different weighting characteristics for the club head using a single club head (as opposed to the club fitter having to carry a large inventory of club heads each with slightly different weighting characteristics). Then, when a weight arrangement and/or orientation is found that best suits a user's swing characteristics and/or provides a desired ball flight path, based on the adjustable club head's settings (e.g., the position and amount of the weight within the rear body member that produces the best characteristics for that user), the club fitter can order or build a club head for the user having permanent weighting characteristics based on and derived from the club head construction and removable rear body member used during the fitting session(s).
The present invention is described above and in the accompanying drawings with reference to a variety of example structures, features, elements, and combinations of structures, features, and elements. The purpose served by the disclosure, however, is to provide examples of the various features and concepts related to the invention, not to limit the scope of the invention. One skilled in the relevant art will recognize that numerous variations and modifications may be made to the embodiments described above without departing from the scope of the present invention, as defined by the appended claims. For example, the various features and concepts described above in conjunction with
This is a continuation of U.S. patent application Ser. No. 16/928,144, now U.S. Pat. No. 11,167,184, filed on Jul. 14, 2020, which is a continuation of U.S. patent application Ser. No. 16/428,788, now U.S. Pat. No. 10,737,149, filed on May 31, 2019, which is a continuation of U.S. patent application Ser. No. 14/643,637, now U.S. Pat. No. 10,322,321, filed on Mar. 10, 2015, which is a continuation of U.S. patent application Ser. No. 13/484,886, now U.S. Pat. No. 9,072,949, filed on May 31, 2012, which is a continuation-in-part of U.S. patent application Ser. No. 13/277,257, now U.S. Pat. No. 8,657,702, filed Oct. 20, 2011, which is a continuation of U.S. patent application Ser. No. 12/338,487, now U.S. Pat. No. 8,043,167, filed Dec. 18, 2008, the contents of which are fully incorporated herein by reference.
Number | Date | Country | |
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Parent | 16928144 | Jul 2020 | US |
Child | 17454223 | US | |
Parent | 16428788 | May 2019 | US |
Child | 16928144 | US | |
Parent | 14643637 | Mar 2015 | US |
Child | 16428788 | US | |
Parent | 13484886 | May 2012 | US |
Child | 14643637 | US | |
Parent | 12338487 | Dec 2008 | US |
Child | 13277257 | US |
Number | Date | Country | |
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Parent | 13277257 | Oct 2011 | US |
Child | 13484886 | US |