Abstract: Disclosed herein is a golf club head having a body portion and a face insert. The front of the body portion further comprises a cutout sized and dimensioned to receive the face insert. The body portion is preferably made from a high-strength metal such as stainless steel, titanium or titanium alloy. The face insert is preferably comprised of a metal having a lower density than that of the body portion. The face insert comprises an aluminum metal matrix composite (MMC) containing an amount of scandium and zirconium. The golf club head may also include a top line insert made of a lightweight material and at least one heavy weight member disposed to the back of the club head.

Abstract: A golf club head formed of multiple materials is disclosed. Those portions of the club head that are subject to high stresses during normal use of the golf club head are formed of a metallic material. Most of the material beyond what is required to maintain structural integrity, however, is removed and replaced with a lightweight material. This freed-up mass that can be redistributed to other, more beneficial locations of the club head. The lightweight material also damps vibrations generated during use of the golf club. This vibration damper may be retained in a state of compression to enhance the vibration damping. One or more weight members may be included to obtain desired center of gravity position, moments of inertia, and other club head attributes. A insert formed of multiple materials and having regions of varying thickness may also be included on a rear surface of the club head.

Abstract: A golf club head having a recess located in a top portion thereof is described and claimed. The recess is located between the heel and the toe and extends toward the sole. The recess may be in the top line of the club head. An insert may be placed within the recess. The insert has a density that is less than the density of the club head body, and the insert preferably is a light-weight insert. The insert may include one or more dampening materials. The recess removes material from the club head, which in turn may do one or more of the following: increase the overall size of the club head, expand the size of the club head sweet spot, lower the club head center of gravity, and/or produce a greater club head moment of inertia. Thus, the recess and insert produce a more forgiving and playable golf club. As an alternative to a recess, a thin protrusion may be provided at the top line of the club head and the insert provided with a corresponding groove to facilitate attachment.

Abstract: A multi-piece iron-type golf club head with a substantial weight member is disclosed and claimed. The golf club head includes a plurality of body members. A first body member includes a face, a rear surface, and a hosel. A viscoelastic material is attached to the rear surface, and a second body member is attached to the viscoelastic material. The second body member, which may be a weight member, has a substantially larger mass than in known golf clubs. The viscoelastic member may form a substantial part of the club head. The club head may also have a recess located in a top portion thereof between the heel and the toe and extending toward the sole. A low-density insert may be positioned within the recess.

Abstract: A golf club head having an undercut is disclosed. The club head includes a body defining a striking face, a top line, a sole, a back, a heel, and a toe. The back contains a cavity that extends in a direction substantially perpendicular to the face. A recesses is provided within the cavity, with the recess extending away from the cavity and toward the sole. The recess causes more of the club head mass to be oriented towards the perimeter of the club head, and optionally also toward the back of the club head. This enlarges the club sweet spot and increases the moment of inertia, and facilitates imparting a desired flight path to a struck golf ball, producing a more forgiving club. The recess may have a varying depth and/or a varying draft angle. A rear wall of the recess may be provided with a cutout to further reposition mass toward the club head perimeter. An insert, such as a vibration dampening member, may be provided within the recess.

Abstract: The present invention relates to a set of golf club irons in which some of the club heads have a hollow space, and some of the club heads do not have a hollow space. The hollow space is preferably defined by a lower portion of the front face, a portion of the sole, and a rear wall. The presence of the hollow space moves the club head center of gravity back (away from the face) and down (toward the sole), making it easier to get a golf ball airborne. The volumes of the hollow spaces generally transition or get progressively smaller with an increase in the club loft angle, thus altering the center of gravity location and moments of inertia by different amounts for different clubs. The hollow spaces may be empty or filled, in whole or part.

Abstract: A golf club head having a recess located in a top portion thereof is described and claimed. The recess is located between the heel and the toe and extends toward the sole. The recess may be in the top line of the club head. An insert may be placed within the recess. The insert has a density that is less than the density of the club head body, and the insert preferably is a light-weight insert. The insert may include one or more damping materials. The recess removes material from the club head, which in turn may do one or more of the following: increase the overall size of the club head, expand the size of the club head sweet spot, lower the club head center of gravity, and/or produce a greater club head moment of inertia. Thus, the recess and insert produce a more forgiving and playable golf club. As an alternative to a recess, a thin protrusion may be provided at the top line of the club head and the insert provided with a corresponding groove to facilitate attachment.

Abstract: A golf club head having a recess located in a top portion thereof is described and claimed. The recess is located between the heel and the toe and extends toward the sole. The recess may be in the top line of the club head. An insert may be placed within the recess. The insert has a density that is less than the density of the club head body, and the insert preferably is a light-weight insert. The insert may include one or more dampening materials. The recess removes material from the club head, which in turn may do one or more of the following: increase the overall size of the club head, expand the size of the club head sweet spot, lower the club head center of gravity, and/or produce a greater club head moment of inertia. Thus, the recess and insert produce a more forgiving and playable golf club. As an alternative to a recess, a thin protrusion may be provided at the top line of the club head and the insert provided with a corresponding groove to facilitate attachment.

Abstract: The present invention relates to a golf club head having multiple undercuts. The club head includes a body defining a striking face, a top line, a sole, and a back, and having a heel and a toe. The back contains a cavity. Multiple undercuts in the form of a plurality of recesses are provided within the cavity. The recesses extend away from the cavity. The recesses may be oriented in a variety of ways. In a first arrangement, the recesses are aligned longitudinally to the striking face in a heel-to-toe direction. In a second arrangement, the recesses are recesses are aligned transverse to the striking face in a front-to-back direction and extend in a heel-to-toe direction. In a third arrangement, the plurality of recesses includes both longitudinally arranged and transversely arranged recesses. An insert, such as a weight insert, a dampening insert, or a combination insert, is preferably positioned within each of the recesses.

Abstract: A golf club head having an undercut is disclosed. The club head includes a body defining a striking face, a top line, a sole, a back, a heel, and a toe. The back contains a cavity that extends in a direction substantially perpendicular to the face. A recesses is provided within the cavity, with the recess extending away from the cavity and toward the sole. The recess causes more of the club head mass to be oriented towards the perimeter of the club head. This enlarges the club sweet spot and increases the moment of inertia, producing a more forgiving club. The recess may have a varying depth and/or a varying draft angle. A rear wall of the recess may be provided with a cutout to further reposition mass toward the club head perimeter. An insert, such as a vibration dampening member, may be provided within the recess. The insert may contain secondary inserts, such as weight members, therein in strategic locations. The insert may completely fill the recess, or may fill only a portion thereof.

Abstract: The present invention relates to a set of golf club irons in which some of the club heads have a hollow space, and some of the club heads do not have a hollow space. The hollow space is preferably defined by a lower portion of the front face, a portion of the sole, and a rear wall. The presence of the hollow space moves the club head center of gravity back (away from the face) and down (toward the sole), making it easier to get a golf ball airborne. The volumes of the hollow spaces generally transition or get progressively smaller with an increase in the club loft angle, thus altering the center of gravity location and moments of inertia by different amounts for different clubs. The hollow spaces may be empty or filled, in whole or part.

Abstract: The present invention relates to a set of golf club irons in which some of the club heads have a hollow space, and some of the club heads do not have a hollow space. The hollow space is preferably defined by a lower portion of the front face, a portion of the sole, and a rear wall. The presence of the hollow space moves the club head center of gravity back (away from the face) and down (toward the sole), making it easier to get a golf ball airborne. The volumes of the hollow spaces generally transition or get progressively smaller with an increase in the club loft angle, thus altering the center of gravity location and moments of inertia by different amounts for different clubs. The hollow spaces may be empty or filled, in whole or part.

Abstract: The present invention relates to a golf club head having multiple undercuts. The club head includes a body defining a striking face, a top line, a sole, and a back, and having a heel and a toe. The back contains a cavity. Multiple undercuts in the form of a plurality of recesses are provided within the cavity. The recesses extend away from the cavity. The recesses may be oriented in a variety of ways. In a first arrangement, the recesses are aligned longitudinally to the striking face in a heel-to-toe direction. In a second arrangement, the recesses are recesses are aligned transverse to the striking face in a front-to-back direction and extend in a heel-to-toe direction. In a third arrangement, the plurality of recesses includes both longitudinally arranged and transversely arranged recesses. An insert, such as a weight insert, a dampening insert, or a combination insert, is preferably positioned within each of the recesses.

Abstract: A set of golf club irons of the blade type is characterized by a weight pad behind the impact area of the club face which progressively increases in height through the set from the long irons to the short irons. In addition, the thickness of the sole portion of each head increases through the set to progressively increase the weight at the bottom of the club heads. The clubs provide improved feel to the golfer which enable the golfer to work the ball more easily during execution of a golf shot.

Abstract: A set of golf club irons of the blade type is characterized by a weight pad behind the impact area of the club face which progressively increases in height through the set from the long irons to the short irons. In addition, the thickness of the sole portion of each head increases through the set to progressively increase the weight at the bottom of the club heads. The clubs provide improved feel to the golfer which enable the golfer to work the ball more easily during execution of a golf shot.

Abstract: A set of golf clubs is characterized by club heads having striking face inserts at least one of which varies in thickness, density, and/or material from the other inserts so that the heads have different centers of gravity. Preferably the long irons in the set have a lower center of gravity (because of thinner or less dense inserts) to increase the trajectory of a struck golf ball. The short irons have a higher center of gravity to reduce the trajectory of a struck golf ball.