Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve with a joint portion, a hosel portion, and a fitting piece, wherein the joint portion fits within the fitting piece and the fitting piece fits within the hosel portion.

Abstract: The present invention discloses an iron-type golf club head having features that permit adjustment to the principal moment of inertia angle, the center of gravity location, turf interaction, loft, and overall club forgiveness. In particular, the golf club head includes a rear cavity sized to receive a weight cartridge composed of one or more materials, the adjustment of which changes one or more of the mass properties of the golf club head and also changes the interaction of the golf club head with turf during play. The weight cartridge may comprise one or more high density materials, and may be located in or proximate the sole.

Abstract: A golf club comprising a hosel and a shaft that is fastened to the hosel at the heel-side of the club is disclosed herein. The golf club includes a wedge inserted into an opening on the heel-side of the hosel, which and retains the shaft within the hosel. In an alternative embodiment, a lever is inserted into an opening in the heel side of the hosel to retain the shaft within the hosel.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve, a hosel portion, and at least two tubular adjustment pieces having non-parallel upper and lower surfaces, wherein the tubular adjustment pieces include loft and lie angle indicators that can be added together to determine overall club head loft and lie angles.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve with a joint portion, a hosel portion, and a fitting piece, wherein the joint portion fits within the fitting piece and the fitting piece fits within the hosel portion.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve, a hosel portion, and at least two tubular adjustment pieces having non-parallel upper and lower surfaces, wherein the tubular adjustment pieces include loft and lie angle indicators that can be added together to determine overall club head loft and lie angles.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve and a tubular adjustment piece, which may be a shim or a wheel, that encircles at least a part of the shaft sleeve and is disposed within a hosel bore.

Abstract: The present invention discloses an iron-type golf club head having features that permit adjustment to the principal moment of inertia angle, the center of gravity location, and overall club forgiveness. In particular, the golf club head includes a rear cavity sized to receive a weight cartridge composed of one or more materials, the adjustment of which changes one or more of the mass properties of the golf club head and may change the interaction of the golf club head with turf during play, and a composite face plate. The weight cartridge may comprise one or more high density materials, and may be located in or proximate the sole.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve, a hosel portion, and a ball joint, wherein the ball joint is located either on the shaft sleeve or the hosel portion and fits within, and is rotatable along various axes within, a socket.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve with a joint portion, a hosel portion, and a fitting piece, wherein the joint portion fits within the fitting piece and the fitting piece fits within the hosel portion.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve with a joint portion, a hosel portion, and a fitting piece, wherein the joint portion fits within the fitting piece and the fitting piece fits within the hosel portion.

Abstract: The method generally involves obtaining data for the golfer's typical playing characteristics using a plurality of golf clubs, determining an average end location for each of a plurality of shots taken with each of a plurality of golf clubs, and calculating the distance from the end location of each of the plurality of shots taken with each of the plurality of clubs to a target location, each distance being a putt distance.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve with a joint portion, a hosel portion, and a fitting piece, wherein the joint portion fits within the fitting piece and the fitting piece fits within the hosel portion.

Abstract: An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve, a hosel portion, a tubular adjustment piece having non-parallel upper and lower surfaces, and a retention piece removably attached to the tip end of the shaft sleeve, wherein the retention piece prevents the tubular adjustment piece from becoming detached from the shaft sleeve. The retention piece may be a ball joint, a universal joint connection, or a retention cap.

Abstract: A multiple material iron-type golf club head is disclosed herein. The iron-type golf club head comprises a cast body, which may be composed of steel, and a face, which may be forged or stamped from a metal material, preferably steel, and then welded to the cast body.

Abstract: The method generally involves obtaining data for the golfer's typical playing characteristics using a plurality of golf clubs, determining an average end location for each of a plurality of shots taken with each of a plurality of golf clubs, and calculating the distance from the end location of each of the plurality of shots taken with each of the plurality of clubs to a target location, each distance being a putt distance.