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 shaft adapter, a collet, a ferrule, and a club head having an interior chamber. 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 adapter so as to allow adjustment of the shaft position with respect to the club head.

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 golf club having removable components includes a club head, a shaft, and a connection assembly. The club head includes a hosel having an upper treaded portion and a lower portion with a faceted cross-section. The connection assembly includes a sleeve mounted on the tip end of the shaft and a screw-cap. The sleeve, which has an aperture for receiving the tip end of the shaft, includes a lower section that has a multi-faceted surface for engaging the lower portion of the hosel. The screw-cap is mounted over the sleeve and includes a body having an upper area and a threaded area, the latter of which is capable of engaging the upper threaded portion of the hosel to removably secure the shaft to the club head.

Abstract: A golf club, components therefore, and a method for manufacturing the components is disclosed herein. The golf club having removable components includes a club head, a shaft, and a connection assembly. The club head includes a hosel having an upper treaded portion and a lower portion with a ribbed cross-section. The connection assembly includes a sleeve mounted on the tip end of the shaft and a screw-cap. The sleeve, which has an aperture for receiving the tip end of the shaft, includes a lower section that has a multi-faceted surface for engaging the lower portion of the hosel. The screw-cap is mounted over the sleeve and includes a body having an upper area and a threaded area, the latter of which is capable of engaging the upper threaded portion of the hosel to removably secure the shaft to the club head.

Abstract: A golf club, includes: a head; a shaft; a shaft case, having a cylindrical shape and fixed to a leading end of the shaft, a hosel, mounted on the head, wherein: the shaft case is inserted into the hosel from an upper end of the hosel; and the shaft case is fixed to the hosel so that an insertion depth of the shaft into the hosel is changed.

Abstract: A golf club interchanging connection structure for interchanging a club head and a shaft includes a positioning mechanism, a club sleeve, an internal screw, and an anti-rotation external screw. The positioning mechanism is placed within the club head. The club sleeve, having one end being connected to and fixed with the shaft and the other end having a first male screw, is placed within the positioning mechanism. The internal screw comprises a nut hole, which is screwed with the first male screw of the club sleeve to lock the shaft connected to the club sleeve. The anti-rotation external screw comprises a second male screw on an outer surface thereof corresponding to a female screw in the club head, in which the second male screw of the anti-rotation external screw is screwed with the female screw, and the anti-rotation external screw leans against the internal screw.

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

Abstract: Golf club 2 has shaft 6, head 4, inner member 8 and cap 10. The head 4 has hosel member 22, and this hosel member 22 screw member 26 formed on the outer peripheral face thereof, and hosel hole 28. The cap 10 has screw member 40 formed on the inner peripheral face thereof, and internal extending portion 44 that extends more inwards than this screw member 40. The screw member 26 of this cap 10 and the screw member 40 of the hosel member 22 are bound by thread connection. The inner member 8 has shaft channel 46, and engaging face 50. The shaft 6 is stuck to the shaft channel 46. Engagement of the engaging face 50 with the internal extending portion 44 controls upward displacement of the inner member 8 with respect to the hosel hole 28.

Abstract: A golf club including a club head and an interchangeable shaft is disclosed herein. A connection assembly (44) comprises a sleeve insert (47), a hosel sleeve (48), a hosel tube (46), a ring mechanism (48) and a guide ring (49).

Abstract: Golf club heads are releasably engaged with shafts so they may be readily interchanged and/or so that the shaft orientation with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include a shaft adapter and a head adapter. The shaft adapter may have an exterior surface extending along a first axis and a bore having a cross-sectional shape along a second axis configured to attach to a shaft member. The second end of the shaft adapter may have a cross-sectional shape of a regular polygon or a cross-sectional shape defined by splines. The head adapter has a first end and a second end along a first axis and a bore having either a shape of a regular polygon or a cross-sectional shape defined by splines along a second axis that is shaped to receive the second end of the shaft adapter in a plurality of orientations.

Abstract: A golf club comprises a shaft, a club head, and a connection assembly that allows the shaft to be easily disconnected from the club head. In particular embodiments, a sleeve including a top portion, a middle portion connected to the top portion is described. The middle portion includes a thin wall thickness. A bottom portion is connected to the middle portion including a plurality of engaging surfaces. A central longitudinal axis and an offset angle offset from the central longitudinal axis is described. The offset angle allows a maximum loft change of about 0.5 degrees to about 4.0 degrees. The total weight of the sleeve is less than 9 g.

Abstract: A golf club including a head, a bore-through hosel insert, and a shaft is disclosed and claimed. The head includes a passage in which the bore-through hosel insert is positioned and retained. The bore-through hosel insert has a specific gravity much lower than the club head specific gravity. This allows mass that would necessarily have been located in the hosel in the heel of the club head to be relocated to more beneficial areas of the club. This allows the club designer to, for example, increase the overall size of the club head, expand the sweet spot, enhance the moment of inertia, and/or optimize the club head center of gravity location.

Abstract: Golf club adapters and golf clubs incorporating such adapters are provided that allow a golf club shaft to be coupled to a golf club head at different orientations for varying the golf club lie angle and/or face angle. The adapter has a first portion coupleable to the golf club shaft along a first longitudinal axis and a second portion coupleable to the club head along a second longitudinal axis, where the first longitudinal axis is offset from the second longitudinal axis. The adapter may be integral or separate from the golf club shaft.

Abstract: In one embodiment, a golf club attachment mechanism comprises a hosel adapter with a first slot coupler across a top portion of the hosel adapter, and a shaft adapter with a second slot coupler across a bottom portion of the shaft adapter. The second slot coupler of the shaft adapter is complementary to the first slot coupler of the hosel adapter. The first slot coupler and the second slot coupler couple together to restrict a rotational movement of the hosel adapter relative to the shaft adapter. Other embodiments are disclosed herein.

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. Golf clubs are provided that have spherical releasable connections between the golf club head and the golf club shaft along with head/shaft position adjusting features to allow interchange of shafts and heads and to allow modification of the head/shaft positioning properties. Assemblies for connecting the club head and shaft may include: a shaft adapter, a shaft retainer, and a hosel insert located within an interior chamber of the club head. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts. Furthermore, the shaft adapter may be rotated within the hosel insert to create different angles from the shaft so as to allow adjustment of the shaft position with respect to the club head.

Abstract: A golf club including a club head and an interchangeable shaft is disclosed herein. A connection assembly (44) comprises a sleeve insert (47), a hosel sleeve (48), a hosel tube (46), a ring mechanism (48) and a guide ring (49).

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 temporary shaft-component connection for assembling a selected golf club shaft with a club head and/or hand grip segment, to facilitate custom club design and fitting to suit the needs and preferences of an individual golfer. The temporary shaft-component connection is particularly designed for use with nonmetallic club shafts formed from a graphite-based composite material or the like having a range of different lengths and stiffness (whip) characteristics. In a shaft-head connection, a metal adapter insert is mounted onto a lower end of the club shaft and includes one or more flat surfaces for reception into a matingly shaped socket in the hosel of a selected club head to prevent relative rotation between the club shaft and head. A compression nut carried on the shaft is threaded onto the hosel to axially engage and retain a thrust flange on the shaft or adapter or adapter insert, to prevent axial separation of the club head and shaft.

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: The invention provides a golf club including a clubhead including a hosel portion having an internal screw portion and a first support surface; a shaft including a neck portion having an external screw portion which screws into the first screw portion and a second support surface opposed to the first support surface, and an adjuster element adapted to be interposed between the first support surface and the second support surface when the clubhead and the shaft are screwed together by the first screw portion and the second screw portion being screwed together, wherein a center axis of an insertion portion on the internal thread is formed is inclined at a predetermined angle with respect to a center axis of the shaft which results when the clubhead and the shaft are screwed together.

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 shaft adapter, a shaft retainer, and a club head having an interior chamber. 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 adapter so as to allow adjustment of the shaft position with respect to the club head.

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 hosel portion (22) has a screw portion (32) and a hosel hole (28). The screw portion (32) of a screw member (10) and a screw portion (26) of the hosel portion (22) are coupled to each other. An inner member (8) has a shaft inserting hole (40) and a lower surface (42). A shaft (6) and the shaft inserting hole (40) are fixed through bonding or the like. The lower surface (42) of the inner member (8) has a plurality of first surfaces and a plurality of second surfaces. The first surface is a parallel surface with a central axis or a tilted surface which is tilted to a circumferential direction. The first surface is extended in such a direction as to enable, together with a receiving surface, a generation of a force capable of inhibiting a relative rotation of a head and the shaft in hitting. The second surface is extended in a closer direction to the circumferential direction as compared with the first surface.

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

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 (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 and a fastener. The shaft sleeve is coupled to an end of the shaft and is received in a hosel included in the club head. The fastener retains the shaft sleeve in the hosel. Hosel and shaft sleeve alignment features are provided that provide discreet orientations between the shaft and club head.

Abstract: A golf club incorporating an interchangeable shaft system includes a shaft, a shaft sleeve, a club head and a fastener. The shaft sleeve is coupled to an end of the shaft and is received in a hosel included in the club head. The fastener retains the shaft sleeve in the hosel. Hosel and shaft sleeve alignment features are provided that 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: A connector for releasably securing a shaft and a head having a hosel with a bore of standard size. The connector includes a shaft adapter, a hosel adapter, and a compression nut. The shaft adapter has a shaft bore sized to receive the shaft, a first threaded coupling member, and a axial shaft. The hosel adapter has a hosel bore and a main body portion. The hosel bore is sized to receive the axial shaft. The compression nut has a second coupling member. The shaft is secured within the shaft bore and the main body portion is secured within the bore of the hosel using an adhesive and the axial shaft is inserted within the hosel bore. Thereafter, the compression nut is rotated to couple the first and second coupling members together thereby securing the shaft and head together without the shaft being received within the bore of the hosel.

Abstract: A ferrule, and a golf club incorporating same, are provided. The ferrule defines an axial bore for receiving a club shaft therethrough. A bottom portion of the ferrule is sized to receive and surround an upper end of a hosel of a club head. The ferrule can further include a chamfered or rounded, annular edge formed on a bottom end thereof. The hosel and the ferrule are cooperatively configured to inhibit movement of the ferrule and, preferably, axial rotation and longitudinal movement of the ferrule are both inhibited by engagement of corresponding surfaces of the ferrule and the hosel. Preferably, protrusions at an upper, interior surface of the ferrule body serve to center the shaft within the ferrule and to enhance a flow of adhesive between the shaft, hosel and ferrule. Preferably, ribs at a lower, interior surface of the ferrule are received in corresponding grooves formed on an upper exterior surface of the hosel. These ribs serve to locate and initially fix the ferrule onto the hosel of the club head.

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 golf club comprising a grip, a shaft having a first end and a second end, with the first end of the shaft having the grip disposed upon it, a shaft cap disposed at the second end of the shaft, and a head having a face portion and a hosel portion with the second end of the shaft having the shaft cap disposed on the shaft coupled to the head.

Abstract: An iron-type golf club (320) having an iron-type club head (322) with an interchangeable shaft (40) is disclosed herein. The golf club (320) includes a tube (344) mounted in the hosel (331) of the club head (322), and a sleeve (346) mounted on a tip end (50) of the shaft (40). The tube (344) includes a tapered portion (360) and a rotation prevention portion (362). The sleeve (346) has a frustoconical portion (372) and a keyed portion (374) that are respectively received in the tapered portion (360) and the rotation prevention portion (362) of the tube (344). The golf club (320) further includes a mechanical fastener (48) for removably securing the shaft (40) to the club head (322).

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 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: 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 (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: 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 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: 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 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 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: 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: An iron-type golf club (320) having an iron-type club head (322) with an interchangeable shaft (40) is disclosed herein. The golf club (320) includes a tube (344) mounted in the hosel (331) of the club head (322), and a sleeve (346) mounted on a tip end (50) of the shaft (40). The tube (344) includes a tapered portion (360) and a rotation prevention portion (362). The sleeve (346) has a frustoconical portion (372) and a keyed portion (374) that are respectively received in the tapered portion (360) and the rotation prevention portion (362) of the tube (344). The golf club (320) further includes a mechanical fastener (48) for removably securing the shaft (40) to the club head (322).

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 exemplary embodiment of the present invention comprises a non-contiguous hosel for attaching a golf club shaft to a golf club head. In an exemplary embodiment, two inserts are used to form a hollow shaft receptacle, or hosel. The two inserts are placed at substantially opposite portions of the club head. The placement of the inserts may be manipulated to vary the lie or loft angle of the golf club. In other embodiments, the two inserts may be joined, or multiple inserts may be used, in order to form a non-contiguous hosel.

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, material composition and shape. In a preferred embodiment, a test golf club with an interchangeable shaft is utilized with the method.