Golf club head with an interchangeable rail system

Abstract

A golf club head with an interchangeable or reversible sole rail system having a rail member configured to be received within one or more channels formed on the club head. The rail system allows the player to employ rails along a surface of the club head to improve the interaction between the club head and the ground during the swing.

Claims

1. A golf club head comprising: a body defining a top portion, a sole, a toe portion, a heel portion, and a ball striking face; a hosel extending upwards from the heel portion when the club head is at address; at least one channel in the sole extending back from the face along the sole; and a rail member comprising one or more protruding rails, wherein the at least one channel is dimensioned to receive the rail member, wherein when the rail member is attached to the body in the at least one channel in a first orientation, the one or more protruding rails extend over the sole, back from and generally perpendicular to the ball striking face, protruding from the sole, wherein the rail member is able to be removed from the body, flipped over, and re-attached to the body to form a smooth surface on the sole, and wherein when the rail member is attached in the at least one channel in the first orientation, the one or more protruding rails extend across substantially an entire length of the sole from substantially near the ball striking face to a rear portion of the club head.

2. The golf club head of claim 1, wherein the rail member comprises two rails that are spaced apart from each other with at least 1 cm between them.

3. The golf club head of claim 2, wherein when the club head is swung through rough, the two rails provide controlled turf interaction and keep the club face straight.

4. The golf club head of claim 1, wherein a height of the one or more rails nearest a leading edge of the sole is slight and extends to a greater height towards an aft section of the golf club head.

5. A golf club head comprising: a ball-striking face; a crown extending back from the face when the club head is at address; a sole extending back from the face to meet the crown; a hosel extending upwards from a heel side of the golf club head; at least one recessed portion in the sole; and a rail member piece received within the at least one recessed portion, the rail member piece comprising one or more rails that protrude from the sole and provide a stabilizing interaction with turf or ground, wherein the rail member piece is able to be removed, flipped over, and re-attached to form a smooth surface, such that the club head has a smooth sole with a center of gravity higher than when the one or more rails protrude from the sole, and wherein the golf club head defines a hollow, wood-type club head.

6. The golf club head of claim 5, wherein the golf club head is one selected from the group consisting of a driver, a fairway, a hybrid, or a utility club, and wherein the rail member comprises metal, plastic, or a composite.

7. The golf club head of claim 5, wherein, when the golf club head is swung through rough, the rails provide controlled turf interaction and keep the club face straight.

8. A hollow, wood-type golf club head comprising: a body defining a top portion, a sole portion, a toe portion, a heel portion, and a ball-striking surface; a hosel extending upwards from the heel side of the body when at address; and a rail piece comprising one or more rails attached to the sole portion such that the one or more rails project from, and extend substantially across, the sole portion to provide turf interaction, wherein the rail piece is able to be removed from the sole, flipped, and re-attached to the sole portion to form a smooth sole surface.

9. The golf club head of claim 8, wherein a greater part of the one or more rails project from the sole portion closer to the ball-striking face than to an aft end of the golf club head.

10. The golf club head of claim 8, wherein the rail piece comprises two rails that are spaced apart by at least about 1 cm and run generally parallel to one another and extend back from the ball-striking face.

11. The golf club head of claim 10, wherein, when the golf club head is swung through rough, the two rails use the turf interaction to keep the club face straight.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a front view of the golf club head.

(2) FIG. 2 shows a bottom view of the golf club head with the rail member removed.

(3) FIG. 3 gives a top view of the rail member.

(4) FIG. 4 gives a bottom view of the rail member.

(5) FIG. 5 provides a rear view of the golf club head with the rail member removed.

(6) FIG. 6 shows a bottom view of the golf club head that includes the fastener member.

(7) FIG. 7 shows the first orientation that the rail member may be attached to the club head.

(8) FIG. 8 shows the second orientation for attachment of the rail member.

DETAILED DESCRIPTION

(9) The invention relates to a golf club head with an interchangeable or reversible rail system that allows the player to configure the sole of the golf club head to improve its movement across the turf. A detailed description of the present invention is disclosed herein. It should be understood that the embodiments described are exemplary and should not be interpreted as limiting the scope of the invention. The detailed description disclosed herein is merely intended to teach one skilled in the art how to make and/or use the invention.

(10) FIG. 1 shows a front view of the golf club head 101 according to the present invention. The club head 101 includes a body 107 defining a crown 113, a sole 119, a toe 125, a heel 131, and a ball striking face 137. The club head 101 is configured to attach to a shaft via a hosel 143 that extends upwards from the heel side of the body 107 when the club is at address. Preferably, the golf club head 101 is a wood or hybrid-type club; however, the invention may be employed on other types of clubs, such as an iron. The club head 101 may be formed from any suitable material, including metals, such as titanium, steel, aluminum, other metal alloy materials, composite or other non-metal materials, polymeric materials, and combinations of various materials. The club head 101 may be formed from one material i.e., a single cast or forged piece of metal or composite, or a combination of materials.

(11) FIG. 2 shows a bottom view of the club head 101 according to one embodiment. The sole 119 includes two channels 201, 203 that extend away from the striking face 137 between the toe 125 and the heel 131. The channels 201, 203 begin substantially near the striking face 137 and lengthen across a majority of the sole 119. The channels 201, 203 extend parallel to each other consistent with the extended rails 307, 309 of the rail member 301, which they are configured to receive (rail member 301 shown in FIG. 3). The channels 201, 203 include open ends 205, 207 opposite to the striking face 137 through which the rail member 301 may be inserted. The size and dimensions of the channels 201, 203 are configured to receive and secure the rail member 301. Thus, when the rail member 301 is inserted into the channels 201, 203, the channels 201, 203 will secure the rail member 301 along the length of the channels 201, 203.

(12) The number and placement of the channels 201, 203 is not limited to the embodiment depicted. In some embodiments one or more channels may be angled relative to the striking face 137 to facilitate certain striking characteristics of the club head 101. The channels 201, 203 may extend across a majority of the sole 119 as in the depicted embodiment, or the channels 201, 203 may extend only partially across the sole 119.

(13) FIGS. 3 and 4 show a top view and a bottom view of a rail member 301, respectively. The rail member 301 includes an elongated body 363 between a proximal end 331 and a distal end 337, two extended rails 307, 309 connected at the distal end 337 by a crossbar 345, a top surface comprising rails 351, 353 and an opposed flat surface 357 (shown more clearly in FIG. 4). The extended rails 307, 309 are separated 1 cm to 8 cm apart and extend in a parallel direction. The extended rails 307, 309 extend substantially across the sole 119 when inserted into their respective channels 201, 203. The dimensions of the rail member 301 are configured for sliding into the recessed channels 201, 203 on the club head 101. When the extended rails 307, 309 are slid into their individual channels 201, 203, the extended rails 307, 309 are secured along their length by the walls of the channels 201, 203. By securing the individual extended rails 307, 309 along their length by channels 201, 203, the rails 351, 353 exhibit exceptional stability during play.

(14) The rail member 301 may be constructed from materials similar to those used in the golf club head 101. In some embodiments, the rail member 301 may be constructed from heavier materials designed to give the rail member 301 additional weight. For example, the rail member 301 may be made of tungsten or other similarly dense materials. By providing rail members 301 with different weights the user may optimize the weight distribution in the sole 119 and customize swing characteristics of the club head 101 simply by switching rail member 301. In some embodiments the rail member 301 may have a non-uniform weight distribution such that one end of the rail member 301 is heavier than the other in order to modify striking characteristics of the club head 101.

(15) The rails 351, 353 along the top surface of the rail member 301, may take on a variety of shapes and profiles. In the depicted embodiment, the rails 351, 353 comprise a uniform profile that extends along the length of the rail member 301. In other embodiments the rails 351, 353 may extend only partially along the extended rails 307, 309 and comprise a non-uniform profile. The rails 351, 353 may take on various forms designed to improve the interaction of the club head 101 with the turf during the swing. For example, the rails 351, 353 may have a cross-section that is substantially rounded, square, trapezoidal, or circular. In addition, the ends of the rails 351, 353 where the rails 351, 353 join the extended rails 307, 309 may take on various degrees of steepness designed to provide for different turf interactions.

(16) In some embodiments the extended rails 307, 309 of the rail member 301 are not connected by a crossbar 345. This allows the user to configure the club head 101 with rails 351, 353 of various sizes, weights, and orientations independently of one another; thus, increasing the number of customizable options available to the player in order to fine tune the sole 119 of the club head 101.

(17) The rail member 301 is configured to be reversibly attached to the club head 101 by sliding the extended rails 307, 309 through open ends 205, 207 of respective channels 201, 203. To secure attachment, the extended rails 307, 309 include at least one tongue 343 along at least one side of the extended rail 307, 309 that corresponds to a groove 213 (see FIG. 5) within the inside wall of the respective channel 201, 203. The tongue 343 need not be one extended ridge, but may be a series of dots, tabs, or any other form with which one skilled in the art would recognize.

(18) It should be understood that the features the rail member 301 provides the club head 101 are not restricted to rails 351, 353 and it is expected that the rail member 301 will be available in a variety of embodiments and offer a range of enhancements to the club head 101. The rail member 301 may be formed from a rubber or plastic that absorbs impact and protects the club head 101 when striking from or near hard surfaces. The rail member 301 may comprise light emitting diodes that light up when swinging. The rail member 301 may comprise acoustic features that make different sounds when the club head 101 is swung through the air. The rail member 301 may comprise training devices such as lasers or lights that project from the sole of the club in order for the player visualize his/her swing plane. Additionally, the rail member 301 may function as a lid or a cover for channels 201, 203 wherein the channels serve an alternative purpose, such as securing the club head 101 to other rail-like surfaces, e.g., a display rack.

(19) FIG. 5 shows a rear view of the club head 101 according to the preferred embodiment. When the extended rails 307, 309 are inserted into a corresponding channel 201, 203 the tongue 343 and groove 213 function as a guide and secure the rail member 301 to the sole 119 of the club head 101.

(20) FIG. 6 shows a fastener member 155 configured to be removably secured within a recess 149 on the sole 119 according to the one embodiment. The recess 149 is adjacent to the open ends 205, 207 of the channels 201, 203. The fastener member 155 is secured within the recess 149 by a fastener 161 such as a screw or tab, and when fastened, closes off the open ends 205, 207 to secure the rail member 301 within the channels. In the depicted embodiment the fastener member 155 is beveled at one end so that when the fastener member is secured within the recess the club head 101 preserves an aerodynamic profile. Beveled should be understood to mean that the fastener member 155 is tapered off at one end, forming a draft angel, such that when the fastener member 155 is secured within the recess, the club head 101 comprises a rounded, rear profile. The fastener member 155 may be formed from materials similar to those used to make the club head 101. In some embodiments the fastener member 155 is constructed from denser materials to give the club head 101 added weight.

(21) One aspect of the invention is that the user can change the sole 119 of the golf club head 101 to account for different types of terrain. The player can choose to use the golf club head with or without rails 351, 353 projecting from the sole 119 depending on the attack angle of the player's swing and turf conditions. The rail system on the sole 119 of the golf club head 101 can be changed by removing the rail member 301, flipping it over, and sliding the rail member 301 back into the channels 201, 203 on the sole 119 of the golf club head 101.

(22) FIG. 7 shows the rail member 301 attached to the club head 101 in the first orientation.

(23) FIG. 8 shows the rail member 301 attached to the club head 101 in the second orientation. When the rail member is attached in the first orientation, the rails project from the sole 119 of the club head 101. When the rail member 301 is inserted in the second orientation, the sole 119 of the club head 101 is substantially smooth. First orientation and second orientation may be understood to refer to two alternative orientations (out of two or more) in which the rail member may be attached to the club head.

(24) FIG. 7 illustrates the first orientations that the rail member 301 may attach to the club head 101 according to one embodiment. When the rail member is attached in the first orientation, the rails 351, 353 along the surface of the extended rails 307, 309, project from the sole 119 of the club head 101. The rails 351, 353 project perpendicular to and extend across a majority of the sole 119. In this orientation, the rails 351, 353 provide a stabilizing turf interaction that is not provided when the rails 351, 353 are attached in the second orientation (see FIG. 8). During the swing, the rails keep the striking face 137 square at impact by guiding the club head 101 through the grass and resisting the twisting of the club head that often occurs when the club head interacts with the turf, particularly in long grass. The rails 351, 353 also provide an additional layer between the sole 119 of the club head 101 and the terrain, which prevents the club head 101 from digging into the ground and thereby enables the player to maintain swing speed through the shot. The height of the rails 351, 353 may be configured to make the striking face 137 either higher from the ground or lower to ground. Thus, by providing multiple rail members 301 the player can customize the sole 119 to best-fit the terrain.

(25) When playing from terrain in which the rails 351, 353 are not desirable, the player may simply remove, flip, and re-attached the rail member 301 in the second orientation, shown in FIG. 8. The second orientation 507 is well suited for playing off surfaces in which it is preferable to keep the club head 101 close to the ground.

(26) The player may decide whether to attach the rail member 301 in the first orientation or the second orientation (compare FIGS. 7 and 8) depending on the turf conditions, e.g., rough vs fairway. When the rail member 301 is slid into the channels 201, 203 in the first orientation, the rails 351, 353 provide a favorable turf interaction when striking a ball from the rough. The rails 351, 353 stabilize the club head 101 as it travels over the ground keeping the striking face 137 square at impact and projecting the ball in a straight direction.

(27) Sometimes when a player attempts a shot, the club head 101 digs into the ground prior to striking the ball. This causes the club head 101 to lose speed prior to impact, hindering the player's ability to hit the ball a desirable distance. The rails 351, 353 enhance the player's ability to drive the ball longer distances by functioning as a barrier between the ground and the club head 101. The rails 351, 353 allow the club head to rake across the terrain with minimal reduction in club head speed. Thus, when the rails 351, 353 are down, the player is able to hit the ball longer distances.

(28) When a player strikes a ball from the fairway, it is important that the striking face 137 be near the ground to facilitate contact between the striking face 137 and the golf ball. When the rail member 301 is inserted in the second orientation, the club head 101 hugs the ground more closely than when the rail member 301 is inserted into the club head 101 in a first orientation. Thus, when the player is hitting a ball off the fairway, the player may choose to insert the rail member 301 into the club in a second orientation, rather than a first orientation.