Abstract: A golf club incorporating an interchangeable shaft system includes a shaft, a shaft sleeve, a club head. The shaft sleeve is coupled to an end of the shaft and is received in a hosel included in the club head. The shaft sleeve is removably coupled to the club head. Hosel and shaft sleeve alignment features provide discreet orientations between the shaft and club head.

Abstract: A system of interchangeable club heads sharing one or more shafts and golf bag for carrying the club heads and one or more shafts. The club heads contain a shaft segment to set club length and a coupler to interconnect to the shaft and grip. The shaft contains an opposite gender coupler. The system is very lightweight and much more portable than a conventional set of golf clubs. It also creates the opportunity for players to match club heads with shafts with differing performance characteristics. Additionally, it solves a problem for golfers using long shafts on putters. These long shafts can now be disassembled for storage and transport.

Abstract: A golf club head includes a face plate and a body member positioned rearwardly of the face plate and having at least two body components. Each of a plurality of apertures is formed in one of the face plate and the body components. At least one fastener extends through at least two of the apertures, the fasteners being configured to removably secure the face plate and the body components together upon being turned a portion of a revolution.

Abstract: A device for attaching to a wedge striking surface includes a detachable putter head. The detachable putter head includes a putter striking surface and an attaching surface. The attaching surface is for attaching to the wedge striking surface at an angle in the range from 45 to 60 degrees with respect to the putter striking surface.

Abstract: A golf club head is composed of a first body having mass concentrations at the heel and toe ends joined by a relatively thinner central web portion that is recessed from the front, top and rear surfaces of the club head. A second body member selected from a plurality of second body members composed of a relatively less dense material is temporarily attached to the web portion of the first body to form a face portion that extends from the sole to the top rail of the club as well as the central portion of the top rail.

Abstract: A golf club may have an orientation marker located on the golf club that indicates at least a relative orientation between the golf club head and shaft. The orientation marker may be located, for example, on the golf club head or shaft. A key member provides additional information with respect to the relative orientation between the golf club head and the shaft. The key member may be located, for example, on the golf club head, shaft, or grip portion, or on a head cover for the golf club head.

Abstract: A golf club head system and a golf club head for inclusion into a golf club are provided. The golf club head includes a main body member and a secondary body member. The main body member has a striking surface, a sole portion, a crown portion, and a rear face substantially opposed to the striking surface. The main body member defines an at least substantially enclosed main body cavity. The secondary body member is attached to the main body member and extends at least substantially over the entire rear face of the main body member. The golf club head system includes two or more secondary body members, each configured for interchangeable attachment to a main body member. Each secondary body member defines an internal concavity, has a different external shape, and has a different combination of center-of-gravity and moment-of-inertia characteristics.

Abstract: This invention relates to golf club fitting devices and more particularly, to a novel golf club fitting assembly designed to interchangeably connect a shaft and club head.

Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).

Abstract: The present invention is directed at a quick release connection system to facilitate customization of golf clubs. It can be used to interchange shafts, removable weights, or soleplates quickly and easily. Teeth are disposed on the inside of a frame so that a shaft may be inserted with minimal resistance, but cannot be removed without specific steps which may require the use of a simple tool. Strengthening and interlock devices are provided to ensure performance quality akin to traditional golf clubs.

Abstract: A system of interchangeable club heads sharing one or more shafts and golf bag for carrying the club heads and one or more shafts. The club heads contain a shaft segment to set club length and a coupler to interconnect to the shaft and grip. The shaft contains an opposite gender coupler. The system is very lightweight and much more portable than a conventional set of golf clubs. It also creates the opportunity for players to match club heads with shafts with differing performance characteristics. Additionally, it solves a problem for golfers using long shafts on putters. These long shafts can now be disassembled for storage and transport.

Abstract: Methods and apparatus for interchangeably coupling golf club heads and shafts are described herein. Other embodiments may be described and claimed.

Abstract: A putter-type club head having a blade member and a peripheral mass belt is disclosed herein. The blade member is preferably composed of an aluminum alloy, and has a first surface with a first insert and a second surface with a second insert. The blade member is removably attached to the peripheral mass belt to allow for a reversal of the striking surface from the first face surface to the second face surface.

Abstract: Disclosed herein is a golf club including a shaft, a club head and several devices for releasably connecting the shaft to the club head.

Abstract: A golf club with an interchangeable shaft that allows conventional shafts to be inserted into a golf club head. An adaptor is securely attached to the bottom end of the shaft. The adaptor is screwed into the hosel on the golf club head. A spacer element is positioned between the adaptor and the hosel to provide a surface against which the adaptor is tightened. A set screw passes through the hosel to securely hold the adaptor and shaft in place within the club head and keep the shaft from rotating with respect to the club head.

Abstract: A golf club head is presented comprising a sole including a removable panel secured to the sole via a non-threaded attachment assembly. Further, the removable panel may have a large surface area relative to its thickness, resulting in a chip-like or wafer-like weight member. This design allows the mass of the removable panel to be spread substantially along the surface of the sole as opposed to in the interior of the club head. The golf club head may comprise more than one removable panel. A removable panel of the present invention may generally comprise one or more discrete areas of higher basis weight or higher density. Even further, the removable panel may generally be releasably attached via a quick disconnect mechanism that allows easy interchangeability.

Abstract: A golf club head is presented comprising a sole including a removable panel secured to the sole via a non-threaded attachment assembly. Further, the removable panel may have a large surface area relative to its thickness, resulting in a chip-like or wafer-like weight member. This design allows the mass of the removable panel to be spread substantially along the surface of the sole as opposed to in the interior of the club head. The golf club head may comprise more than one removable panel. A removable panel of the present invention may generally comprise one or more discrete areas of higher basis weight or higher density. Even further, the removable panel may generally be releasably attached via a quick disconnect mechanism that allows easy interchangeability.

Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (144) mounted in the club head (22), and a sleeve (146) mounted on a tip end (50) of the shaft (40). An exterior bottom end of the sleeve (146) has a castellated surface. An interior bottom end of the tube (144) has a matching castellated surface. The golf club (20) further includes a mechanical fastener (148) for removably securing the shaft (40) to the club head (22).

Abstract: A golf club incorporating an interchangeable shaft system includes a shaft, a shaft sleeve, a club head. The shaft sleeve is coupled to an end of the shaft and is received in a hosel included in the club head. The shaft sleeve is removably coupled to the club head. Hosel and shaft sleeve alignment features provide discreet orientations between the shaft and club head.

Abstract: A golf club kit having selectively interchangeable heads and shafts. The upper face of a club head is provided with hosel having a recessed sleeve with an open ends. A receiver, having a bore provided with spline grooves, is secured within the sleeve. A recessed screw port, axially aligned with the bore and the sleeve, is provided in the head's lower face. A club shaft includes a hosel connector on its lower end. The connector has a lower portion provided with external splines and an internally threaded bore, and an upper portion with a circumferential flange. The hosel connector of a selected shaft is inserted into the receiver of a selected club. A screw is passed upwardly through the screw port and is threadably installed within the bore of the hosel connector. The hosel connector flange is compressed securely against the upper end of the receiver.

Abstract: An interchangeable putter system for the customization of putters to individual players and for increasing the versatility of putting on various putting surfaces. The system includes a club head and a plurality of interchangeable face plates. Each of the face plates includes a front surface having a pitch or loft. The face plates are removably attachable to the club head by securing fasteners to the face plates prior to its attachment to the club head. As a result the attachment of the face plate to the club head is simplified.

Abstract: Embodiments of golf club fitting bags and methods of manufacture are generally described herein. An article for transporting and displaying a golf club to fitting kit comprises a body comprising at least one toting mechanism to allow a single individual to transport the article, at least one shaft compartment to contain a plurality of golf club shafts, and a plurality of shelves to contain a plurality of golf club heads separate from the golf club shafts. Other embodiments are described and claimed.

Abstract: A hosel set for a golf club is provided that contains a plurality of hosels that can be used interchangeably and removably with one or more golf club heads to secure a shaft to the golf club heads. The hosels vary in length while maintaining the same weight. Mating, curved surfaces are provided on the hosel and the golf club head to facilitate ease of bending and to reduce binding and gapping between the hosel and the golf club head.

Abstract: A hosel portion (22) has a screw portion (32) formed on an internal surface or external surface thereof and a hosel hole (28). A screw member (10) has a through hole (30) for causing a shaft (6) and an inner member (8) to penetrate therethrough, a screw portion (32) and a downward surface (56). The screw portion (32) of the screw member (10) and a screw portion (26) of the hosel portion (22) are coupled to each other. The inner member (8) has a shaft inserting hole (40) opened on an upper end side thereof, a lower surface (42) which can be engaged with a receiving surface (60), and an upward surface (44). At least a part of the inner member (8) is inserted into the hosel hole (28). The shaft (6) and the shaft inserting hole (40) are fixed to each other through bonding and/or fitting. The shaft (6) and a head (4) are fixed to each other through an engagement of the downward surface (56) and the upward surface (44) and an engagement of the receiving surface (60) and the lower surface (42).

Abstract: A shaft structure with a configurable bending, weight, torque and moment-of-inertia profile is provided for golf clubs, fishing rods, and the like. The shaft structure employs an innovative inner and outer shaft structure. The golfer, in practice, configures the profile of a golf shaft by choosing from a plurality of different inner shaft structures each having a unique bending, weight, moment-of-inertia and torque profile. The inner shaft is securely fastened within the outer shaft. The combination of the inner shaft with the outer shaft results in an advantageous bending, weight, torque and moment-of-inertia profile. The golfer can, at any time and very easily, change the profile of the golf shaft according to their physical, course and weather conditions for any given day.

Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).

Abstract: A changeable grip 20 for a shock imparting implement grip has a body 22, ferrule element 24, and a sleeve 26. The body 22 and sleeve 26 portions of the grip are threadably connected to the ferrule element 24 which is attached to the shaft 14 of a shock imparting implement.

Abstract: Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include: (a) a cylindrical structure having a cylindrical interior chamber for receiving a golf club shaft, a rotation-inhibiting structure, and a securing structure; and (b) a securing system for releasably engaging the securing structure. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts. Furthermore, the shaft may be bent or otherwise extend at an angle from the shaft connection assembly so as to allow adjustment of the shaft position with respect to the club head.

Abstract: A golf accessory is provided that includes an insert for removably and interchangeably mounting within an interior of a golf club shaft for interchangeably altering a predetermined stiffness or bending moment of the club shaft.

Abstract: Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include: (a) a shaft engaging member including a rotation-inhibiting structure; (b) a club head engaging member including a shaft-receiving chamber and a retaining structure for engaging the rotation-inhibiting structure; and (c) a securing system for releasably securing the shaft engaging member with respect to the club head engaging member. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts. Furthermore, the shaft may be bent or otherwise extend at an angle from the shaft engaging member so as to allow adjustment of the shaft position with respect to the club head.

Abstract: Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include: (a) a shaft engaging member including a rotation-inhibiting structure; (b) a club head engaging member including a shaft-receiving chamber and a retaining structure for engaging the rotation-inhibiting structure; and (c) a securing system for releasably securing the shaft engaging member with respect to the club head engaging member. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts. Furthermore, the shaft may be bent or otherwise extend at an angle from the shaft engaging member so as to allow adjustment of the shaft position with respect to the club head.

Abstract: Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include: (a) a shaft engaging member including a rotation-inhibiting structure; (b) a club head engaging member including a shaft-receiving chamber and a retaining structure for engaging the rotation-inhibiting structure; and (c) a securing system for releasably securing the shaft engaging member with respect to the club head engaging member. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts. Furthermore, the shaft may be bent or otherwise extend at an angle from the shaft engaging member so as to allow adjustment of the shaft position with respect to the club head.

Abstract: A golf club kit having selectively interchangeable heads and shafts. The upper face of a club head is provided with hosel having a recessed sleeve with an open ends. A receiver, having a bore provided with spline grooves, is secured within the sleeve. A recessed screw port, axially aligned with the bore and the sleeve, is provided in the head's lower face. A club shaft includes a hosel connector on its lower end. The connector has a lower portion provided with external splines and an internally threaded bore, and an upper portion with a circumferential flange. The hosel connector of a selected shaft is inserted into the receiver of a selected club. A screw is passed upwardly through the screw port and is threadably installed within the bore of the hosel connector. The hosel connector flange is compressed securely against the upper end of the receiver.

Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).

Abstract: A golf club comprises a club head and a club shaft, in which, the head includes a main body with a top hole arranged in a top portion thereof and a bottom hole corresponding to the top hole in a bottom portion of the same, and also includes a joint, one end of which is an insertion end inserted into and located by a Location structure within the top hole, and connected with a fastener arranged at the bottom of the main body, the other end of which is fixedly secured to the shaft. The fixedly secured joint portion passes through a passage communicating with the top hole and the bottom hole. The above arrangement is convenient for the detachment of the golf shaft and the random combination of the head and the shaft.

Abstract: A golf club (20) having a club head (22) with an interchangeable shaft (40) is disclosed herein. The golf club (20) includes a tube (44, 144) mounted in the club head (22), and a sleeve (46, 146) mounted on a tip end (50) of the shaft (40). The tube (44, 144) includes a tapered portion (60, 160) and a rotation prevention portion (62, 162). The sleeve (46, 146) has a frustoconical portion (72, 172) and a keyed portion (74, 174) that are respectively received in the tapered portion (60, 160) and the rotation prevention portion (62, 162) of the tube (44, 144). The golf club (20) further includes a mechanical fastener (48, 148) for removably securing the shaft (40) to the club head (22).

Abstract: A golf club having a shaft and an elongated head projecting at a lie angle relative to the shaft, the head having the shape of a regular polygon in a cross section at right angles to the central axis of the head, with each face being formed of a material that provides a different ball rebound factor, the head section being rotatable about the central axis so that any one of the faces may be presented for use with the club.

Abstract: Disclosed herein is a golf club including a shaft, a club head and several devices for releasably connecting the shaft to the club head.

Abstract: An adjustable customized golf club, e.g., a golf putter, as well as a method for using the club, wherein the club has a head, a striking surface attachment, and one or more lock fittings that positively lock the striking surface attachment to the head. The striking surface attachment is one of several selectable attachments, each with different performance characteristics, e.g., rebound. The one or more lock fittings positively lock the striking surface attachments to the putter head such that the club components are firmly fixed, yet are still quickly removable and replaceable. One embodiment provides a golf club comprising a head defining at least one slot, and a replaceable striking surface attachment having protrusions compressed within the at least one slot.

Abstract: An adjustable golf putter comprising a top shaft assembly, a bottom shaft assembly, a hosel assembly, a putter head, and a removable handle assembly. When the handle assembly is installed, the ergonometric golf putter has a zigzag shape. This configuration better enables the golfer to sight the ball and effect a putt. When the handle assembly is removed, the ergonometric golf putter has a straight shape. This configuration enables the golfer to utilize the golf putter as a traditional straight golf putter. In addition, the hosel assembly defines a predetermined lie angle to accommodate the golfer's preference. The same putter is usually adaptable for a right or left handed user.

Abstract: A putter-fitting system that allows for quick and easy alteration of various aspects of the putter including, but not limited to, weighting, lie angle, and hosel style is described. Also described are a cam-based putter face release mechanism, a cam-based hosel release mechanism and/or an interchangeable striking surface insert.

Abstract: A reconfigurable golf club head and a method for fitting a golf club to a golfer are described. Optimum club head design parameters are determined based on one or more of the following factors: the golfer's swing characteristics, ball flight trajectory tendency information, course and weather conditions, golf ball dynamic flight characteristics and personal preferences. Lookup tables or mathematical algorithms, such as impact and trajectory simulations, may be used. Features of the reconfigurable golf club head include a replaceable face plate to adjust the profile of the club face and a replaceable weight plate to adjust the club head center of gravity and inertia properties. Adjustable characteristics of the club face include the loft angle, bulge radius and roll radius.

Abstract: Embodiments of methods and apparatus for interchangeably coupling golf club heads and shafts are generally described herein. Other embodiments may be described and claimed.

Abstract: A trainer golf club is provided having a hollowed shaft with a plurality of concentric weights extending along the length of the shaft for endurance training. The concentric weights may be added or removed to obtain a desired training weight for the golf club. Since the weights extend along the length of the shaft, their weight is substantially evenly distributed along the shaft which keeps the center of gravity of the trainer golf club substantially the same as that of a conventional golf club. Interchangeable golf club heads are provided that couple to one end of the trainer golf club to enable hitting golf balls. By providing multiple different types of golf club heads, the trainer golf club may be customized. Moreover, different size club heads may be coupled to a single shaft to enable a golfer to carry a set of clubs in a small, compact package.

Abstract: An adjustable customized golf club, e.g., a golf putter, as well as a method for using the club, wherein the club has a head, a striking surface attachment, and one or more lock fittings that positively lock the striking surface attachment to the head. The striking surface attachment is one of several selectable attachments, each with different performance characteristics, e.g., rebound. The one or more lock fittings positively lock the striking surface attachments to the putter head such that the club components are firmly fixed, yet are still quickly removable and replaceable. One embodiment provides a golf club comprising a head that houses a cam for engagement with posts disposed on a striking surface attachment.

Abstract: The present invention is directed at a quick release connection system to facilitate customization of golf clubs. It can be used to interchange shafts, removable weights, or soleplates quickly and easily. Teeth are disposed on the inside of a frame so that a shaft may be inserted with minimal resistance, but cannot be removed without specific steps which may require the use of a simple tool. Strengthening and interlock devices are provided to ensure performance quality akin to traditional golf clubs.

Abstract: A method (500) for fitting a golf club to a golfer is disclosed herein. The method includes having a golfer hit a test golf club. If the test golf club is preferred, a final golf club is formed that matches the test golf club. Preferably, the final golf club matches the following parameters of the test golf club: volume, mass, mass location, inertial values, center of gravity location, club frequency, orientation, material composition and shape. In a preferred embodiment, a test golf club with an interchangeable shaft is utilized with the method.

Abstract: Apparatus and methods for providing a separable golf club are provided involving a connector having a male connector and a female connector configured to be selectively matable. The male and female connectors are configured to facilitate assembly of the connector with a reduced likelihood of damage to threaded portions of each component by the presence of complementary engaging surfaces, such as blunt tip and smooth alignment portions of the male connector. Additionally, the male and female connectors each may have a shoulder portion with a larger dimension than other portions of the connector in order to provide a secure coupling of the components.

Abstract: Apparatus and methods for providing a separable golf club are provided involving a connector having a male connector and a female connector configured to be selectively matable. The male and female connectors are configured to facilitate assembly of the connector with a reduced likelihood of damage to threaded portions of each component by the presence of complementary engaging surfaces, such as blunt tip and smooth alignment portions of the male connector. Additionally, the male and female connectors each may have a shoulder portion with a larger dimension than other portions of the connector in order to provide a secure coupling of the components.

Abstract: A golf putter including a head which has detachably fastened to the body thereof a face plate provided with a plurality of striking surfaces which are selectably and interchangeably oriented by a player to a forward facing use position, the striking surfaces each having different ball-impacting characteristics, e.g., rebound factor, hardness, and/or frictional characteristics. In one embodiment, the face plate has flat front and rear parallel surfaces in which are fitted inserts with different ball-impacting characteristics, the face plate being attachable conformally to the front face of a putter head body with a selected insert in a forward-facing use position by a pair of screws inserted through holes in the face plate in opposite sides of the inserts and tightened into a pair of aligned threaded bores which extend perpendicular into the front face of the putter head body.