Abstract: A putter head comprising a removable and replaceable hosel is disclosed herein. In particular, the putter comprises a first body portion with a plurality of protrusions, a second body portion with a plurality of cavities sized to receive the protrusions, a hosel with an engagement portion that is trapped within one of the cavities by a protrusion, and a mechanical fastener to removably fix each of these pieces together. The fastener preferably extends through a bore on the heel side of the putter head and into a threaded bore within one of the protrusions. In an alternative embodiment, the putter head has a single body portion, which receives the engagement portion of a hosel in a heel side cavity, and which is affixed to the hosel via a fastener that extends through a front surface of the body portion.

Abstract: A golf club head comprising a body, an elevated weight bar, and at least one stiffening member is disclosed herein. The elevated weight bar is disposed within a hollow cavity portion of the body and bridges at least a portion of a bottom section of the body, and the at least one stiffening member is also disposed within the hollow cavity portion, extending from a top line section to bottom section of the body and passing through the elevated weight bar without making contact with the elevated weight bar. The elevated weight bar, which is preferably composed of a higher density material than that of the body, may be formed separately from the rest of the body and then affixed to the body by welding or a mechanical fastener.

Abstract: The present invention is directed to a golf club head comprising one or more center of gravity and bias adjustment features. In some embodiments, the golf club head comprises an elongated cartridge having one or more sockets or weight ports to receive weight plugs, the arrangement of which can be changed to adjust the mass properties of the golf club head. The orientation of the cartridge itself can also be reversed to adjust the mass properties. In other embodiments, the golf club head comprises at least one semicircular weight ring that extends around the rear portion of the golf club head, and is removable and replaceable to adjust the mass properties of the golf club head. In still other embodiments, these features are combined on one head.

Abstract: A golf club head having improved stiffness characteristics is disclosed herein. The golf club head, which preferably is an iron-type head, comprises a body with at least two stiffening rods extending between a top portion and a bottom portion or heel and toe portions of the body. The stiffening rods, when tightened, place pressure on one of the top portion and bottom portion, thereby stiffening that portion of the body. The stiffening rods are inserted into the body via internally threaded through-bores or ports, and when tightened, press against receiving cups extending from the top or bottom portions of the body into a rear cavity of the body. The present invention is also directed to a set of such golf club heads with stiffening rods in differing orientations within the heads depending on their loft angles.

Abstract: A golf club head having multiple structural columns is disclosed herein. A body comprises a face section, a sole section, and a crown or return section, and defines a hollow interior. Each of the structural columns extends from the crown or return section to the sole section within the hollow interior to reduce stresses placed on the face section during impact with a golf ball. The structural columns are all located within 1 inch of a rear surface of the face section measured along a plane normal to the center of the face, and are spaced a distance of 0.500 to 2.00 inch from one another within the hollow interior.

Abstract: A golf club head comprising a channel and a sliding weight that can be reversibly fixed at any point within the channel is disclosed herein. The channel preferably is disposed on the sole and extends from a heel side of the golf club head, around a rear side, and ends at a toe side of the golf club head. This channel is not constrained to a planar arc, but instead twists as it extends around the golf club head so that it follows the contours, and preserves the aesthetics, of the golf club head. The slidable weight comprises a base portion and a first cap, and a second cap that has the same dimensions as, and is interchangeable with, the first cap is disposed in a pocket in the sole proximate the face of the golf club head.

Abstract: A golf club head comprising a body, a variable face thickness pattern, and a plurality of solid metal stiffening rods, and which satisfies the equation Vballnorm?0.0356x+140.82, is disclosed herein. The body comprises a face, a sole, and a return section, and defines a hollow interior. Each of the rods extends from the return section to the sole within the hollow interior proximate the face to reduce stresses placed on the face during impact with a golf ball. The rods are all located within 1 inch of a rear surface of the face measured along a plane normal to the center of the face, and are spaced a distance of 0.500 to 2.00 inch from one another within the hollow interior. The variable face thickness pattern preferably comprises a plurality of concentric rings, with a center ring having a thickness that is less than a thickness of an intermediary ring.

Abstract: A golf club head with means for adjusting a center of gravity along more than one axis is disclosed herein. The golf club head comprises at least one rectangular weight bar disposed within a recessed region on the sole and adjustable within the recessed region. One end of the weight bar is reversibly fixed to the sole with a connection element, while the other end includes an engagement feature that engages a retention feature at the edge of the recessed region. The retention feature provides multiple locations at the edge of the recessed region to which the engagement feature can be fixed, and when the weight bar is in a configuration desired by a golfer, the weight bar can be reversibly secured to the sole and immobilized within the recessed region by tightening the connection element. The weight bar may also include a slidable weight assembly.

Abstract: A method of manufacturing a golf club head including a plurality of structural connectors, and particularly solid rods proximate the face, is disclosed herein. The method includes the steps of preparing a wax of a golf club head body, the body including first and second through-holes, a hollow interior, and first and second receiving pockets, preparing waxes of first and second solid rods, inserting the first solid rod wax into the first through-hole and seating its lower end in the first receiving pocket, inserting the second solid rod wax into the second through-hole and seating its lower end in the second receiving pocket, bonding each of the first and second solid rods to the body with an adhesive material to form a combined wax mold, and casting a golf club head from the combined wax mold.

Abstract: A golf club head comprising a body, an elevated weight bar, and a plurality of carbon tubes is disclosed herein. The body comprises a hollow interior, a face section, a sole section, and a crown section, and the elevated weight bar bridges at least a portion of the sole and may be formed separately from the rest of the body and then affixed to the body by welding or a mechanical fastener. In one embodiment, each of the carbon tubes extends from the crown section and terminates at the elevated weight bar, while in another embodiment each of the carbon tubes extends from the crown section to the sole section and passes through the elevated weight bar without making contact with the floating weight bar.

Abstract: A method of manufacturing a golf club head comprising a plurality of structural connectors, and particularly solid rods proximate the face, is disclosed herein. The method comprises the steps of preparing a wax of a golf club head body, the body comprising first and second through-holes, a hollow interior, and first and second receiving pockets, preparing waxes of first and second solid rods, inserting the first solid rod wax into the first through-hole and seating its lower end in the first receiving pocket, inserting the second solid rod wax into the second through-hole and seating its lower end in the second receiving pocket, bonding each of the first and second solid rods to the body with an adhesive material to form a combined wax mold, and casting a golf club head from the combined wax mold.

Abstract: A golf club head comprising a body, an elevated weight bar, and at least one stiffening member is disclosed herein. The elevated weight bar is disposed within a hollow cavity portion of the body and bridges at least a portion of a bottom section of the body, and the at least one stiffening member is also disposed within the hollow cavity portion, extending from a top line section to bottom section of the body and passing through the elevated weight bar without making contact with the elevated weight bar. The elevated weight bar, which is preferably composed of a higher density material than that of the body, may be formed separately from the rest of the body and then affixed to the body by welding or a mechanical fastener.

Abstract: A golf club head having multiple structural columns is disclosed herein. A body comprises a face section, a sole section, and a crown or return section, and defines a hollow interior. Each of the structural columns extends from the crown or return section to the sole section within the hollow interior to reduce stresses placed on the face section during impact with a golf ball. The structural columns are all located within 1 inch of a rear surface of the face section measured along a plane normal to the center of the face, and are spaced a distance of 0.500 to 2.00 inch from one another within the hollow interior.

Abstract: The present invention comprises a golf club head comprising a body having a crown, a sole, a front wall and a hosel, wherein the body defines a hollow interior. The golf club head further comprises a center of gravity height adjustment assembly wherein the center of gravity height adjustment assembly is positioned within the hollow interior of the body. The products of inertia (Ixz and Iyz) of the golf club head have an absolute value below 100 g-cm2.

Abstract: A golf club head comprising a body, a variable face thickness pattern, and a plurality of solid metal stiffening rods, and which satisfies the equation Vballnorm?0.0356x+140.82, is disclosed herein. The body comprises a face, a sole, and a return section, and defines a hollow interior. Each of the rods extends from the return section to the sole within the hollow interior proximate the face to reduce stresses placed on the face during impact with a golf ball. The rods are all located within 1 inch of a rear surface of the face measured along a plane normal to the center of the face, and are spaced a distance of 0.500 to 2.00 inch from one another within the hollow interior. The variable face thickness pattern preferably comprises a plurality of concentric rings, with a center ring having a thickness that is less than a thickness of an intermediary ring.

Abstract: A golf club shaft connection assembly comprising first and second shaft sections, male and female adaptors, a hollow retainer, a spring, and a plurality of balls is disclosed herein. The male and female adaptors are each attached to the first and second shaft sections, respectively, preferably with a permanent adhesive. The male adaptor comprises a protrusion that fits within a keyed interior of the female adaptor, and moving the hollow retainer towards the male adaptor reversibly fixes the two adaptors together, while moving the hollow retainer towards the female adaptor allows the male adaptor to be removed from the female adaptor.

Abstract: A golf club head comprising a body and a plurality of tubes is disclosed herein. The body comprises a face section, a sole section with a protrusion extending upward and a crown section. The body defines a hollow interior. Each of the plurality of tubes extends from the crown section to the protrusion of the sole section.

Abstract: A golf club head comprising a body and a plurality of stiffening members is disclosed herein. The body comprises a face section, a sole section, and a crown section or a return section, and also defines a hollow interior. Each of the plurality of stiffening members extends from the crown section or return section to the sole section to reduce stresses placed on the face during impact with a golf ball. The stiffening members preferably are preloaded, and may be tightened using a tool. Each of the stiffening members has a midsection that is preferably selected from the group consisting of a solid metal rod, a hollow metal tube, and a spring, and each preferably is composed of a titanium alloy.

Abstract: The present invention comprises a golf club head comprising a body having a crown, a sole, a front wall and a hosel, wherein the body defines a hollow interior. The golf club head further comprises a center of gravity adjustment assembly wherein the center of gravity adjustment assembly is positioned within the hollow interior of the body, and allows the center of gravity of the golf club head to be adjusted by at least 0.050 inch, preferably along a vertical axis.

Abstract: A golf club head having at least one structural column is disclosed herein. A body comprises a face section, a sole section, and a crown or return section, and defines a hollow interior. Each of the structural columns extends from the crown or return section to the sole section within the hollow interior to reduce stresses placed on the face section during impact with a golf ball. The structural columns are all located within 1 inch of a rear surface of the face section measured along a plane normal to the center of the face, and are spaced a distance of 0.500 to 2.00 inch from one another within the hollow interior.