Abstract: Golf club heads include a golf club head body, a ball striking face, and a shaft engaging member configured to engage a golf club shaft with the golf club head body. Additionally, the shaft engaging member may be configured to engage the golf club head body and the shaft below a center of gravity of the golf club head, and/or the shaft engaging member may have rotational locking structure that can be locked in a plurality of positions. Further, the golf club head may include a face member and a rear member, where the rear member is configured to transfer energy and/or momentum to the face member, particularly on off-center hits.

Abstract: A ball striking device, such as a golf club head, has a head that includes a face configured for striking a ball and a body connected to the face, the body being adapted for connection of a shaft proximate a heel thereof. The face has a thickened portion including an annular tapered area that tapers in thickness between an upper boundary and a lower boundary and encloses an elevated area bounded by the upper boundary. The upper and/or lower boundary defines a shape having two lobes, each with an outer edge with a convex profile, and a connecting portion extending between the lobes, such that the connecting portion is defined by two outer edges extending between the outer edges of the lobes, wherein at least one of the outer edges of the connecting portion has a concave outer profile.

Abstract: A ball striking device, such as a golf club, includes a head that includes a face having a ball striking surface configured for striking a ball and a body connected to the face and extending rearward from the face. A face member formed primarily of a metallic material forms the face, and a body member is connected to the face member and extends rearward from the face member to form at least a portion of the body. The body member is formed at least partially of a polymer material, and has a doped portion containing a doping material dispersed within the polymer material. The doping material may have a different density than the polymer material, such that the doped portion has a different density than the portions of the body member not containing the doping material. A co-molding method may be used to form the ball striking device.

Abstract: Golf club heads which may include an iron-type golf club head body and an adjustable member configured to be engaged with iron-type golf club head body. The adjustable member may include a first surface and a second surface. The first surface of the adjustable member may form at least a portion of the sole of the iron-type golf club head and at least a portion of the rear of iron-type golf club head when the adjustable member is engaged with the iron-type golf club head body in a first orientation. Additionally, the second surface of the adjustable member may form at least a portion of the sole of the iron-type golf club head and at least a portion of the rear of iron-type golf club head when the adjustable member is engaged with the iron-type golf club head body in a second orientation, which is different from the first orientation.

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.

Abstract: A ball striking device has a head with a body member having a face having a striking surface configured for striking a ball, a crown portion and a sole portion connected to the face and extending rearward from the face, where the body member has a void extending inwardly from a rear periphery of the body member, and a rear member connected to the body member and received within the void, such that the rear member forms portions of a crown and a sole of the head. A connection member connects the rear member to the body member to form a joint between the rear member and the body member. A resilient member separates the rear member from the body member, and the resilient member engages the rear member and the body member within the void and is configured to transfer momentum between the rear member and the body member.

Abstract: Golf club heads include at least one part having a side wall extending completely around the golf club head, wherein the side wall ends at an edge (a free end) that defines an open side of the part. An interior surface of this side wall has a draft angle of ?1° or more as it extends to its edge. In some club heads, the interior surface of at least one club head part will be shaped so that the interior surface does not converge as the side wall of that part extends to its edge. For some club head parts, the planar cross sectional area defined inside the interior surface of the part will either stay the same or get larger as one moves to the part edge. By avoiding or limiting features of negative draft angles, converging interior surfaces, and/or smaller cross sectional areas on interior surfaces of a part, manufacturing and tooling may be simplified.

Abstract: A golf club head includes a face, a club head body, and a hosel. The hosel has a tubular hosel body extending along a longitudinal axis and defining a bore. The bore is configured to receive a golf club shaft or a shaft adapter. The tubular hosel body is molded from a polymeric material that includes a resin and a plurality of fibers, each fiber has a length of from about 0.01 mm to about 12 mm.

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.

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.

Abstract: Golf club heads include a golf club head body, a ball striking face, and a shaft engaging member configured to engage a golf club shaft with the golf club head body. Additionally, the shaft engaging member may be configured to engage the golf club head body and the shaft below a center of gravity of the golf club head, and/or the shaft engaging member may have rotational locking structure that can be locked in a plurality of positions. Further, the golf club head may include a face member and a rear member, where the rear member is configured to transfer energy and/or momentum to the face member, particularly on off-center hits.

Abstract: A method of customizing a golf club head for a user's swing begins by receiving an indication of a characteristic of a user's golf swing. A club face is selected from a plurality of club faces based on the characteristic, and a club body is selected from a plurality of club bodies based on the characteristic. The selected club face and club body are then affixed together to define a golf club head. Each of the plurality of club faces and plurality of club bodies are freely interchangeable.

Abstract: Golf club heads include a face member with a face having a striking surface and a rear side opposite the striking surface, where a rear cavity is defined on the rear side of the face member, and a rear member is connected to the rear side of the face member, such that the rear member is at least partially received within the rear cavity. A resilient material is positioned between the rear member and the face member, and the head also includes an engagement member rigidly engaging the face member and the rear member at a point between the heel edge and the toe edge of the rear member. The engagement member has a rigidity greater than that of the resilient material and may form a sole area of rigid engagement between the face member and the rear member.

Abstract: A golf club head includes a face, a club head body, and a hosel. The hosel has a tubular hosel body extending along a longitudinal axis and defining a bore. The bore is configured to receive a golf club shaft or a shaft adapter. The tubular hosel body is molded from a polymeric material that includes a resin and a plurality of fibers, each fiber has a length of from about 0.01 mm to about 12 mm.

Abstract: Golf club heads include at least one part having a side wall extending completely around the golf club head, wherein the side wall ends at an edge (a free end) that defines an open side of the part. An interior surface of this side wall has a draft angle of ?1° or more as it extends to its edge. In some club heads, the interior surface of at least one club head part will be shaped so that the interior surface does not converge as the side wall of that part extends to its edge. For some club head parts, the planar cross sectional area defined inside the interior surface of the part will either stay the same or get larger as one moves to the part edge. By avoiding or limiting features of negative draft angles, converging interior surfaces, and/or smaller cross sectional areas on interior surfaces of a part, manufacturing and tooling may be simplified.

Abstract: A golf club head includes a club face and a body. The club face is formed from a metallic material and includes a first, hitting surface, a second, rear surface that is opposite the first surface, and a flange that is separated from the second surface by a transverse distance. The body is formed from a polymeric material and includes a crown, a sole, a hosel, and a face support. The club face and the body cooperate to define a closed volume, and the face support extends to opposing sides of the flange and is operative to couple the club face to the body.

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.

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.

Abstract: Golf club heads include a golf club head body, a ball striking face, and a shaft engaging member configured to engage a golf club shaft with the golf club head body. The golf club head may be configured with a first piece and a second piece, which may be in the form of the shaft engaging member and a body member connected to the shaft engaging member. The shaft engaging member includes a base member and an arm extending from the base member, and the body member includes a face having a striking surface configured for striking a ball and a club head body positioned behind the face, the second piece having a receiving slot positioned behind the face, where the base member of the first piece is at least partially received within the receiving slot.

Abstract: A ball striking device, such as a golf club, includes a head that includes a face having a ball striking surface configured for striking a ball and a body connected to the face and extending rearward from the face. A face member formed primarily of a metallic material forms the face, and a body member is connected to the face member and extends rearward from the face member to form at least a portion of the body. The body member is formed at least partially of a polymer material, and has a doped portion containing a doping material dispersed within the polymer material. The doping material may have a different density than the polymer material, such that the doped portion has a different density than the portions of the body member not containing the doping material. A co-molding method may be used to form the ball striking device.