Abstract: A ball striking device, such as a golf club, includes a head with a face having a ball striking surface configured for striking a ball, a body connected to the face, and a filling material, which may be in the form of an insert, connected to a rear surface of the face. The filling material may fill in a thinned portion of the face, which may form a recess on the rear surface of the face that receives the filling material. The filling material has a density that is lower than the density of the face material. Depending on the size, shape, and location of the filling material, the weight distribution, the moment of inertia, and/or the center of gravity of the face may change.

Abstract: A golf club having a club head with a cut-out cavity which is configured to accept the footwear of a golfing instructor, caddy, playing partner, or other individual available to assist the golfer. The club head has a flat bottom and a downwardly and rearwardly sloping top surface. It is aerodynamically designed, both as to the outer shape of the club head and the configuration of the cavity, to increase driving distances.

Abstract: Hybrid golf club heads and hybrid golf clubs are described herein. The hybrid golf club head includes a body member having a hitting surface, a top surface, a toe end, a heel end, and a sole surface extending between the toe end and the heel end. The hybrid golf club head also includes a shaft attachment portion extending from the heel end upwardly and rearwardly therefrom away from the toe end, where the shaft attachment portion defines a shaft axis. The hitting surface is inclined at a predetermined angle with respect to the shaft axis. The hybrid golf club head includes a first Length B of the top surface near the shaft attachment portion and a second Length A of the top surface near the toe end, where the ratio of B to A is in a range from about 0.428 to about 0.75.

Abstract: Wood-type golf clubs as described herein may include: (a) a hosel to receive a golf club shaft; (b) a club head; and (c) a ball striking face. The club head include may include: a plurality of weights, a plurality of tubes, and an exterior cover structure (e.g., an exterior skin) that covers at least a portion of the plurality of weights and at least a portion of the plurality of tubes, and wherein the exterior cover structure defines the shape of the club head. Additionally, the ball striking face may be engaged with at least two of the plurality of weights and/or at least two of the tubes. The plurality of weights may include a first weight, a second weight, a third weight, and a fourth weight that are all engaged with the striking face.

Abstract: A golf club head, and a golf club with the subject head. The head has a putter body that defines a front face and a golf club iron face that is integral with the putter body and presents an angled ball-striking face portion.

Abstract: Golf club heads with ribs are described herein. Other embodiments and related methods are also disclosed herein.

Abstract: This invention provides a golf club head to which an ornament is fixed. The ornament includes a cup-shaped metal shell member, a solid elastic body which has a mounting surface fitted in the golf club head, and fills the interior of the shell member, and an adhesive layer which bonds the inner surface of the shell member to the elastic body.

Abstract: An apparatus can comprise a body with a receptacle, and a multi-density weight. The multi-density weight can comprise a first weight component with a first density, an inner portion and a periphery around the inner portion, and a second weight component with a second density and secured to the inner portion of the first weight component. The body, and the first and second weight components can comprise materials different from each other. The receptacle can have a receptacle base and a receptacle wall. The second weight component can comprise a material having a weld-averse trait with respect to the body. The surface of the body can be proximate to at least one of a hosel region, an upper toe region, a lower toe region, a heel region, a backside region, an upper-half region, or a lower-half region of the body. Other embodiments and related methods are also disclosed herein.

Abstract: A head 2 has a face line 8 having a depth of D1 (mm). In a section line of a surface of the face line 8, a boundary between a land area LA and the face line 8 is defined as a point Pa; a point of which a depth is [D¼] (mm) is defined as a point Pb; a point of which a depth is [D½] (mm) is defined as a point Pc; a point of which a depth is [(D1)×(¾)] (mm) is defined as a point Pd; a radius of a circle CL1 passing through three points of the point Pa, the point Pb, and the point Pc is defined as R3 (mm); a straight line passing through the point Pc and the point Pd is defined as a straight line Lcd; a straight line perpendicular to the land area LA is defined as a straight line Lp; and an angle between the straight line Lcd and the straight line Lp is defined as ?m. At that time, the radius R3 is 0.01 (mm) or greater and 0.10 (mm) or less, and the angle ?m is 40 degrees or greater and 70 degrees or less.

Abstract: A manufacturing method of a forged golf club head has acts of: providing pre-forged strike element and the pre-forged hosel made with different materials, welding the hosel on a connecting end of the strike element, and press-forging the blank to form a main component of the golf club head. The main component of the golf club head may accomplish the golf club head. Otherwise, a pre-forged secondary component is welded on a back part of the strike face of the main component to accomplish the golf club head. The strike element and the hosel made of different materials are directly secured to each other to precisely form a predetermined, shape so that the following surface treating steps and the manufacturing time are reduced and the quality of the golf club head is enhanced.

Abstract: A golf club head has a body member that includes a ball striking face, a crown region, a toe region, a heel region, a sole region, a rear region and a hosel region. The body member has a drag-reduction feature that may include first and second elongated fins. The fins extend in a generally front-to-rear orientation. The fins are spaced farther apart at their forward-most ends than at their rearward-most ends. Alternatively, the drag-reduction feature may include first and second elongated indentations. The indentations extend in a generally front-to-rear orientation. The indentations are spaced farther apart at their forward-most ends than at their rearward-most ends. The drag-reduction features may be located on one or both of the crown region or the sole region. A golf club including the golf club head is also provided.

Abstract: In one embodiment, a golf club head is presented having a sole with three recessed cavities for attachment to a hosel-bending tool. In another embodiment, a golf club head is presented having a sole that includes one predetermined contact area proximal to the toe edge of the sole. In another embodiment, a golf club head is presented having a sole in which pads of material are incorporated that may be milled to vary the relief of the sole and to modify mass characteristics of the club head. Yet another embodiment presents a golf club head having a body with a cavity to receive a cartridge that has a constant density and weight.

Abstract: A golf club head has a body defining a ball striking face. The body further has a first leg extending away from the ball striking face and a second leg extending away from the ball striking face wherein a void is defined between the first leg and the second leg. The body further defines a cover that extends over the void. The golf club head may further have support structures and adjustable weight members.

Abstract: A hollow golf club is provided having an outer shell and an inner frame. The outer shell comprises one or more lightweight members, such as the crown or the skirt, and preferably fits within an envelope of about 5 inches×5 inches×2.8 inches. The inner frame fits within a smaller envelope and sits on the sole of the club head. One or more weights are located either on or within the inner frame to optimize the moment of inertia of the club head about both the vertical axis running through the center of gravity or geometric center of the club head, hereinafter referred to as the “y-axis,” and the axis running through the center of the shaft of the golf club, hereinafter referred to as the “hosel axis.” The weights can be attached to the inner frame or can be distributed within the inner frame.

Abstract: A wood type golf club head according to this invention includes a face portion and a crown portion. A center-of-gravity position mark which indicates a point where the center of gravity of the wood type golf club head is projected to the crown portion is formed on the surface of the crown portion.

Abstract: Provided is a golf club having a head disposed at a front end of a shaft and a grip disposed at a back end of the shaft. A club weight is not larger than 290 g, and a ratio (head weight/club weight) of a head weight to a club weight is not lower than 0.67 but not higher than 0.72. Furthermore, a grip weight is not smaller than 27 g but not larger than 45 g, and when a distance from the front end of the shaft to a center of gravity the shaft is LG and when a full length of the shaft is LS, 0.54?LG/LS?0.65 is satisfied.

Abstract: A hybrid golf club head for producing accurate and long distance shots, where the head includes: a body member having a hitting surface, a top surface, a toe end, a heel end, and a sole surface extending between the toe end and the heel end, and a shaft attachment portion extending from the heel end upwardly and rearwardly therefrom, wherein width of the top surface near the shaft attachment portion ranges from about ¾ inches to about 1 inch, and width of the top surface near the toe end ranges from about 1 inch to 1 & ? inches; and wherein the hitting surface is inclined at a predetermined angle with respect to a shaft axis to produce the accurate and the long distance shots, further wherein the length (L) of the hitting surface 14 is about 4 inches and the breadth (B) ranges from about 1¾ inches to about 2½ inches.

Abstract: A golf club head has a body defining a ball striking face. The body further has a first leg extending away from the ball striking face and a second leg extending away from the ball striking face wherein a void is defined between the first leg and the second leg. The body further defines a crown that extends over the void.

Abstract: An exemplary golf club head can comprise a body comprising a hosel bore defining a hosel bore axis and an adjustable sleeve comprising a plurality of longitudinal splines that engage with the body within the hosel bore such that the sleeve is configured to be secured within the hosel bore in a plurality of discrete rotational positions relative to the hosel bore axis. The sleeve can further comprise a shaft bore defining a shaft bore axis that forms a sleeve angle with the hosel bore axis when the sleeve is secured within the hosel bore. The square loft angle of the golf club head can be adjusted by changing the rotational position of the sleeve within the hosel bore. The club head can further comprise an adjustable sole piece that can be locked on the sole at a plurality of discrete positions to adjust face angle.

Abstract: A golf club head includes a striking face having a face center, a bottom portion, a top portion including an exterior surface, a hosel including an imaginary vertical hosel plane, a forwardmost point, and a rearwardmost point. In an imaginary vertical plane perpendicular to the hosel plane and passing through the face center, the exterior surface includes a path having a first point and a second point rearward of the first point. An imaginary infinite straight line passes through the first point and the second point, but does not penetrate the exterior surface. A segment of the imaginary straight line is delimited by the first point and the second point. A maximum distance between the segment and the exterior surface of the top portion is no greater than 0.70 mm and a distance between the first point and the second point is no less than 22 mm.

Abstract: A golf club head includes a striking face having a face center, a bottom portion, a top portion including an exterior surface, a hose1 including an imaginary vertical hose1 plane, a forwardmost point, and a rearwardmost point. In an imaginary vertical plane perpendicular to the hose1 plane and passing through the face center, the exterior surface includes a path having a first point and a second point rearward of the first point. An imaginary infinite straight line passes through the first point and the second point, but does not penetrate the exterior surface. A segment of the imaginary straight line is delimited by the first point and the second point. A maximum distance between the segment and the exterior surface of the top portion is no greater than 0.70 mm and a distance between the first point and the second point is no less than 22 mm.

Abstract: An approach is provided for coating a golf club head with a material. The approach involves securing a first golf club head component to a second golf club head component using an adhesive, resulting in a golf club head main body having an exterior surface. The approach further includes physical vapor depositing at least one layer on at least a portion of the exterior surface of the golf club head main body at a temperature less than a melting point of the adhesive.

Abstract: A golf club having a golf club head 20 with a keel zone that makes the actual face angle of the golf club appear differently when the golf club is at address. The golf club head 20 has a keel zone that is preferably 0.5 inch wide in the fore- aft direction and 1.0 inch wide in the heel-toe direction, which changes the appearance of the face angle while the golf club is at address.

Abstract: This head 2 includes a head body h1 as a first member and a face plate p1 as a second member. A boundary k1 of the first member and the second member exists on a surface of the head. A deposition layer is formed in a region including the boundary k1 on the surface of the head. A temperature Tp in a deposition process is equal to or less than 150° C. Preferably, the deposition layer is formed by PVD. Preferably, the first member and the second member are stuck with an adhesive. Preferably, the deposition layer has a surface layer and a lower layer. Preferably, the exposed deposition layer is a TiC layer. Preferably, a total thickness Tt of the deposition layer is 0.5 ?m or greater and 3.0 ?m or less.

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. At least one component of the head includes a coloring that creates a different visual impression. Such a coloring may be integrally formed as part of the outer surface of component. The head may include a face that is at least partially colored as described herein.

Abstract: A golf club head can comprise a body and a protrusion weight protruded from a heel, a sole, and/or a skirt of the body. A center of gravity of the protrusion weight can be external to the body of the golf club head. A moment of inertia of the golf club head can be increased due to a distance extension between the center of gravity of the protrusion weight and a center of gravity of the golf club head, the distance extension being external to the body. The center of gravity of the golf club head can be located at a heel portion of the body, shifted by the protrusion weight away from a toe portion of the body and from a center of gravity of the body. The protrusion weight can be at least partially visible from an exterior of the golf club head. Other examples are disclosed herein.

Abstract: A golf club head includes a body member having a ball striking face, a crown, a toe, a heel, a sole, a back and a hosel region, located at the intersection of the ball striking face, the heel, the crown and the sole. The body member may have a first cross-section having a first airfoil-shaped surface in the heel. The first cross-section may be oriented at approximately 90° from the centerline of the club head. The body member may have a second cross-section having a second airfoil-shaped surface. The second cross-section may be oriented at approximately 45° or at approximately 70°. The airfoil-shaped surfaces may be defined by spline points or by equations. A golf club including the golf club head is also provided.

Abstract: A golf club can include a universal hosel and/or hosel spacer that allows the golf club to be used with a variety of different sized club head shafts. The universal hosel can include multiple steps or ledges, and various inner diameters to accommodate different sized shafts. The spacer can be a self-expanding spacer, and can be pre-coated with epoxy. The spacer can fill in gaps within a hosel, so as to accommodate different sized shafts.

Abstract: A golf club head with moments of inertia that are optimized about principal axes of the club head. The club head can have a roll radius about its ball striking face that is decreased above a first axis, and increased below the first axis, the first axis being correlated with the principal axes of the club head.

Abstract: A golf club head which may include a golf club head body, a ball striking face and a piezoelectric member in the golf club head, wherein the piezoelectric member is configured to be selectively adjusted by an input provided through a controller operably connected to the piezoelectric member. Further, the piezoelectric member may be capable of having a first configuration to provide the golf club head body with a first attribute and may also be capable of having a second configuration to provide the body with a second attribute in response to the input provided by the controller. Further, the second attribute may be different from the first attribute.

Abstract: Aspects of this disclosure relate to a golf club head which includes a wood type golf club head body including a ball striking face portion at a front side, a rear side, a crown portion, and a sole portion. Further, the sole or crown or rear portion of the club head body may be configured so that the body includes a bump portion which protrudes from the sole or crown or rear portion and an indented portion which recedes into the sole or crown or rear portion and creates a recess in the sole or crown or rear portion of the body. Further, the bump portion and the indented portion may be configured so that a center of gravity of the golf club head body is nearer to one of the heel edge of the body and the toe edge of the body.

Abstract: A golf club head in which a top surface of the body includes an actual top surface visible profile region and a varied top surface visible profile region is provided. The varied top surface visible profile region may provide a visual impression of a varied profile of the body distinct from an actual profile of the body. The visual impression is oriented in a manner that allows the golfer to address the ball at the heel region of the golf club. The perimeter of the top surface visible profile region may be complementary in shape to the perimeter of the top surface of the body and the varied top surface visible profile region and the actual top surface visible profile region may be distinct in shape, size, color, and/or finish etc. An associated golf club and a method for fitting a golf club are also provided.

Abstract: The accuracy or computation speed of mechanical analysis of a golf ball using the finite element method is increased. In the mechanical analysis, a model representing the golf ball is prepared on a computer, and computation is made by the finite element method using elements and nodes. At this time, the elements are made solid elements of hexahedron, the aspect ratio of the shape of each element is set so as to be not lower than 1.0 and not substantially higher than 6.5, and nodes are provided on the sides and at the vertexes of the hexahedron of element.

Abstract: A wood-type golf club including a head comprising a body having a face, a sole, a crown, a toe and a heel and a coordinate system with an x-axis extending horizontally tangent to a center of the club face, a y-axis extending vertically from the center of the club face, and a z-axis extending horizontally through the center of the club face. A system is disposed within the body for adjusting club face angle at address comprising an element that is rotatable about a system axis that is substantially parallel to the y-axis to provide at least first and second club face angle positions at address. The element may be any shape which changes club face angle at address. The system axis may alternatively be substantially parallel to the z-axis. Or, the element may even comprise a plurality of interchangeable adjustment portions interchangeably mated with a body portion.

Abstract: Devices, apparatus, and methods of storing and releasing a ball marker from the bottom of a head of the golf club, such as a putter. A compartment in the bottom of the golf club head has a side opening adjacent to the rear of the golf club head for allowing a disc shaped ball marker to be slid into the compartment, and sliding the marker in reverse allows the marker to be slid out of and removed from the compartment. A magnet can also be used. Also, the compartment can have grooved side walls that act as tracks to allow the marker to be slid into and out of the compartment. A removable top disc and front plate on the golf club head allows for advertising indicia and logos to be placed on the head of the golf club.

Abstract: The invention provides a golf club head with a truss member that attenuates unwanted vibration while allowing for precise control of mass distribution. In certain aspects, the invention provides a club head with a perimeter body including a top line and a sole portion coupled to a face and a hosel. The club head further includes at least one truss member extending between and coupling two portions of the perimeter body, for example, from the top line to the sole.

Abstract: A golf club head having a striking wall having a front surface, and a rear surface, a top surface, and a sole portion extending rearwardly from the rear surface, the sole portion having a forward end, a rearward end, an upper surface and a lower surface. The intersection of the upper surface and the rear surface defines an interior sole line. The intersection of the upper surface and the rearward end defines a trailing edge. The A region on the upper surface includes variation of the height of the trailing edge or exterior sole line relative to the height of the interior sole line.

Abstract: An intersection point between a shaft axis Z1 and a sole surface 18 is defined as S1. A point S2, a point S3, and a point S4 are set on the sole surface 18. An intersection point between a straight line passing through a center of gravity of the head and being perpendicular to the horizontal plane and the sole surface 18 is defined as G1. A point R1, a point R2, a point R3, and a point R4 are set on the sole surface 18. A section A1 and a section A2 are set based on the points. An angle between the shaft axis Z1 and a ground plane is defined as ?. The angle ? exists so that at least a point belonging to the section A1 and at least a point belonging to the section A2 are brought into contact with the ground plane.

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, the connection assembly includes a removable hosel sleeve that allows a shaft to be supported a desired predetermined orientation relative to the club head. In this manner, the shaft loft and/or lie angle of the club can be adjusted without resorting to traditional bending of the shaft. In another embodiment, the club head has an adjustable sole that can be adjusted upwardly and downwardly relative to the strike face of the club head, which is effective to adjust the face angle of the club head.

Abstract: A protective cover for a golf club, such as a driver or wood, is disclosed that remains in place during play to prevent scuffing, scratching, and the like of the surface finish. The golf club includes a head having a striking face portion and a non-planar body portion, and a shaft extending from the head. The protective cover includes a one-piece continuous polymeric film that closely conforms to the shape of at least a portion of the non-planar body portion of the golf club head, such as the entire crown, and a layer of adhesive adhering the polymeric film to the club head. The polymeric film preferably does not cover the face portion of the golf club head so that it has minimal impact on the performance of the golf club. A method of applying the protective cover to the club head is also disclosed.

Abstract: A golf club with a rigid shaft band is disclosed herein. More specifically, the present invention discloses a golf club with a rigid shaft band that is placed at a precise location on the shaft itself, utilizing a precise taper within the internal surface of the rigid shaft band to control the location. Even more specifically, the rigid shaft band may be placed at a distance that is greater than about 1 inch and less than about 3 inches away from the butt end of the golf club with a tapered internal surface of greater than about 0.573 degrees and less than about 1.146 degrees.

Abstract: A wood-type golf club head with an adjustable keel zone member is disclosed herein. The golf club head includes a body and an adjustable keel zone member. The body has a front portion, a crown portion and a sole portion. The body also having a heel end, a toe end and an aft end. The sole portion has only a single keel point. The adjustable keel zone member is disposed within a keel zone of the sole and located preferentially with respect to the center of gravity. The keel zone member is capable of adjusting the face angle of the wood-type golf club head.

Abstract: A golf club head designed for an open face approach is provided. Several factors encountered when hitting a ball from an open face position are addressed by the disclosed club head. As a result, precision, spin rate, loft, and stopping power are significantly improved from an open face strike. The club head includes a club face having a plurality of parallel, non-intersecting grooves extending across the club face and offset at an angle to optimize backspin and minimize sidespin when a ball is struck in the toe region. The club head also provides a sole and/or trailing edge designed to accommodate an open face position and to avoid “thinned” shots.

Abstract: A golf club that picks up a golf ball, sets the golf ball on a tee and may be used to hit the golf ball by providing an opening in the golf club head for entrance of the golf ball which through a series of inclining and declining planes and bumpers the ball rolls into the back of the golf club via a push down motion, thence the golf club can be picked up, held above the tee, and with a turn of the wrist the golf ball can be set upon the tee for driving by the same golf club.

Abstract: An improved golf club wedge configured for reliable ball contact out of deep rough and other difficult lies, employs a striking surface leading edge that precedes the hosel by a significant onset. Nevertheless, the wedge hereof hits the golf ball along a lower and longer trajectory than its closest predecessor by reducing the distance from the hosel/face center line to that leading edge along both the striking face and the sole. Moreover, the wedge of the present invention uses a bigger bounce as well, which gives the head a more acceptable appearance and makes it more compatible with other clubs in a set of golf clubs.

Abstract: A golf club head with improved striking face performance is disclosed herein. More specifically, the present invention discloses a golf club head having a thickened central region surrounded by an internal and an external transition region; wherein the thickened central region has an inner perimeter that takes on a shape that substantially resembles the shape of an outer perimeter of the striking face of the golf club head.

Abstract: A hollow golf club head made of metal includes a face portion, a sole portion, a side portion, and a crown portion. The crown portion and at least a part of the side portion have a Young's modulus lower than the face portion and the sole portion.

Abstract: Sports training apparatuses, systems and methods for allowing a golf club user to estimate the trajectory and distance of a golf ball once it has been impacted with the golf club. One embodiment includes a golf club made up of a head, a ferrule, a shaft and a grip wherein one or more markings are positioned on said head, ferrule, shaft or grip or any combination of the head, ferrule, shaft and grip so the one or more markings may be used for monitoring and aiding in the improvement of the player's performance. The markings may be positioned at one or more locations about the external surface of one or more portions of the golf club including the head, the ferrule, the hosel, the shaft, and the grip. In other embodiments, additional markings may be used in conjunction with the first set of markings.

Abstract: A ball striking device, such as a golf club, includes a head with a face having an outer surface configured for striking a ball, a body connected to the face, an elongated, inwardly recessed channel located on the body and extending across a portion of the body, and an insert mounted within the channel. The insert includes a resiliently deflectable base member that engages the channel to retain the insert within the channel and a rigid outer member connected to the base member and forming at least a portion of the outer surface of the insert, where the outer member is made from a different material than the base member. Additionally, the insert has an outer surface that is substantially flush with at least one immediately adjacent surface of the body.

Abstract: The present invention is directed at a quick release connection system to facilitate customization of golf clubs. It can be used to interchange soleplates quickly and easily. Teeth are disposed on the inside of a frame so that a soleplate 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.