Abstract: An iron golf club head includes a first head member and a second head member. The first head member is structurally integrally formed of a neck, a heel, and a face which includes an annular first convexity at a rear side thereof. The second head member is structurally integrally formed of a toe, a top, and a sole, and includes a second convexity corresponding in location to the first convexity. The second convexity has a recess for disposing solder. Accordingly, the first convexity and the second convexity are fastened securely to each other by soldering.

Abstract: A method of manufacturing a composite golf club head with a metal face includes the following steps. 1. Arrange two die and a mold plunger. 2. Combine the dies to form a mold cavity, which bottom is installed with a metal bottom board. 3. Put a bulk molding compound (B.M.C.) into the mold cavity. 4. Move the mold plunger into the mold cavity to compress the B.M.C. 5. Solidify the compressed bulk molding compound, and then separate the dies and the mold plunger to get a composite main body of the golf club head. The main body thus obtained has a main casing with a top opening. 6. Mount a composite top casing to the main casing to cover the top opening. Mount a metal front casing to a front side of the main casing to form the face.

Abstract: A golf club head includes a main body which is made of composite material and has a main casing with a top opening thereon. A bottom board is made of metal and is mounted on a bottom side of the main casing. A top casing covers the top opening of the main casing and fastens its edge to the periphery of the opening, and a front casing is made of metal and has a board portion and an annular wall having an end fasten to the front side of the main casing.

Abstract: A method of manufacturing a golf club head of composite material comprises the steps of combining a first and a second dies having recessed portions and at least on tunnel portion respectively to form a mold cavity, putting a bulk molding compound (B.M.C.) into the mold cavity, compressing a mold plunger into the mold cavity through the tunnel portion such that a mold space, which is defined by a mold portion of the mold plunger and the recessed portions of the dies, is filled with the B.M.C., and then separating the first die, the second die and the mold plunger while the B.M.C. is solidified to get a golf club head with a shape corresponding to the mold space.

Abstract: The present invention is to provide a wood golf club head comprising a rear casing and a front casing both made of metal. The rear casing has a cup-like main body with an opening at a front side thereof. The front has a main plank and an annular side wall backwardly integrally extending from the peripheral of said main plank. The rear casing and the front casing are fixed together by means of the distal end of the side wall of the front casing fixing with the edge of the opening of said rear casing such that a hollow main body is defined by the main plank and the side wall of the front casing and the main body of the rear casing, and a hitting face is defined by the exterior surface of the main plank.

Abstract: The present invention is to provide a golf club head which comprises a first shell and a second shell. The first and the second shells are respectively molded from a compound material by hot die molding and fixedly fastened to each other. The first shell has a crown, a neck extended from said crown and having a hole receiving a bushing and a connecting tube for the mounting of a golf club shaft, and a face disposed at one side of said crown and adapted for hitting the ball. The second shell having a sole and a bottom panel fixedly fastened to an outer side of said sole.

Abstract: A golf club head which comprises a steel alloy which contains maximum amounts of 0.03% of C by weight, 0.2˜0.6% of Si by weight, maximum amounts of 0.15% of Mn by weight, maximum amounts of 0.03% of P by weight, maximum amounts of 0.03% of S by weight, 10.5-13.5% of Cr by weight, 0.8-1.4% of Mo by weight, 0.8-1.4% of Al by weight, 0.8˜1.4% of Ni by weight, 0.02˜0.1% of Nb by weight, maximum amounts of 0.01% of N by weight, maximum amounts of 0.03% of Cu by weight, and the rest being Fe. The steel alloy is made by a metallurgical method involving vacuum melting process and normalizing process, whereby the main crystal structure of the steel alloy is Fe.

Abstract: A golf club head comprises a rear seat member and a front member fastened to the rear seat member by soldering. The two members are made of a metal material. The rear seat member has a base similar in shape to the back of the golf club head. The base has one side which is connected with a neck. The front member has a plate which is provided in the front face with a ball-hitting face. The plate is provided in the edge with an extension portion extending therefrom such that the rear edge of the extension portion is fastened with the front side of the base of the rear seat member by soldering. A flexure space is provided between the back of the plate and the rear seat member to facilitate the flexing of the plate.

Abstract: A material having capacity of absorbing vibration contains maximum amounts of 0.03% of C by weight, 0.2˜0.6% of Si by weight, maximum amounts of 0.15% of Mn by weight, maximum amounts of 0.03% of P by weight, maximum amounts of 0.03% of S by weight, 10.5˜13.5% of Cr by weight, 0.8˜1.4% of Mo by weight, 0.8˜1.4% of Al by weight, 0.8˜1.4% of Ni by weight, 0.02˜0.1% of Nb by weight, maximum amounts of 0.01% of N by weight, maximum amounts of 0.03% of Cu by weight, and the rest being Fe. The material being made by a metallurgical method involving vacuum melting process and normalizing process, whereby the main crystal structure of the material is Fe.

Abstract: A golf club head comprises a ball-hitting face made of a steel alloy containing maximum amounts of 0.03% of C by weight, 0.2% of Si by weight, 0.2% of Mn by weight, 0.2% of P by weight, 0.02% of S by weight, 10.5-11.0% of Cr by weight, 1.8-2.2% of Mo by weight, 9.5-10.5% of Ni by weight, 0.9-1.2% of Ti by weight, 0.5% of Al by weight, 0.1% of Cu by weight, 0.3% of Nb by weight, 0.3% of B by weight, 0.01% of N by weight, 0.1% of V by weight, 0.1% of W by weight, and the rest being Fe. The steel alloy is made by a metallurgical method involving two vacuum melting processes. The texture of the steel alloy is mainly formed of martensite.

Abstract: A material having capacity of absorbing vibration contains maximum amounts of 0.03% of C by weight, 0.2˜0.6% of Si by weight, maximum amounts of 0.15% of Mn by weight, maximum amounts of 0.03% of P by weight, maximum amounts of 0.03% of S by weight, 10.5˜13.5% of Cr by weight, 0.8-1.4% of Mo by weight, 0.8-1.4% of Al by weight, 0.8˜1.4% of Ni by weight, 0.02˜0.1% of Nb by weight, maximum amounts of 0.01% of N by weight, maximum amounts of 0.03% of Cu by weight, and the rest being Fe. The material being made by a metallurgical method involving vacuum melting process and normalizing process, whereby the main crystal structure of the material is Fe.

Abstract: A golf club head, which a steel alloy. The steel alloy contains maximum amounts of 0.03% of C by weight, 0.2˜0.6% of Si by weight, maximum amounts of 0.15% of Mn by weight, maximum amounts of 0.03% of P by weight, maximum amounts of 0.03% of S by weight, 10.5˜13.5% of Cr by weight, 0.8-1.4% of Mo by weight, 0.8-1.4% of Al by weight, 0.8˜1.4% of Ni by weight, 0.02˜0.1% of Nb by weight, maximum amounts of 0.01% of N by weight, maximum amounts of 0.03% of Cu by weight, and the rest being Fe. The steel alloy being made by a metallurgical method involving vacuum melting process and normalizing process, whereby the main crystal structure of the steel alloy is Fe.

Abstract: A golf club head comprises a ball-hitting face made of a steel alloy containing maximum amounts of 0.03% of C by weight, 0.2% of Si by weight, 0.2% of Mn by weight, 0.2% of P by weight, 0.02% of S by weight, 10.5-11.0% of Cr by weight, 1.8-2.2% of Mo by weight, 9.5-10.5% of Ni by weight, 0.9-1.2% of Ti by weight, 0.5% of Al by weight, 0.1% of Cu by weight, 0.3% of Nb by weight, 0.3% of B by weight, 0.01% of N by weight, 0.1% of V by weight, 0.1% of W by weight, and the rest being Fe. The steel alloy is made by a metallurgical method involving two vacuum melting processes. The texture of the steel alloy is mainly formed of martensite.

Abstract: A golf club head comprises a main body and a ball-hitting face which is fastened to the main body by a brazing layer and an annular soldering portion. The brazing layer is formed between the back of the ball-hitting plate and an annular joining face of the main body. The brazing layer is formed by solidification of a brazing solder held in a trench circumventing the annular joining face of the main body. The annular soldering portion is formed along an annular joining slit located between the ball-hitting plate and the main body.

Abstract: A golf club head is formed of a metal shell, a metal neck tube, and a metal ball-hitting plate. The shell is provided with a neck seat having a through hole in communication with the hollow interior of the shell. The neck tube is lodged in the through hole of the neck seat such that the outer end of the neck tube forms with the neck seat a neck portion of the golf club head. The shell is further provided on the outer surface with an open space corresponding in shape to the ball-hitting plate. The ball-hitting plate is fused with the shell by brazing such that the ball-hitting plate covers the open space of the shell. The shell is made by casting. The neck tube is made by a mechanical process. The ball-hitting plate is made by forging, or punching and pressing.

Abstract: A golf club head comprises a head portion and a neck portion which has a cross section with a flexible section. The longitudinal direction of the cross section of the flexible section and the heel-toe direction of the golf club head form an angle ranging between zero and 90 degrees. In light of the short axial direction of the cross section of the flexible section having a better flexibility, when the golf club head hits a ball, the flexibility in the left front direction or the right front direction is better than other direction. The ball has a tendency to travel along the predetermined side so as to correct the golfer's habit to hit the ball to travel in other side.

Abstract: A golf club head comprises a rear seat member and a front member fastened to the rear seat member by soldering. The two members are made of a metal material. The rear seat member has a base similar in shape to the back of the golf club head. The base has one side which is connected with a neck. The front member has a plate which is provided in the front lace with a ball-hitting face. The plate is provided in the edge with an extension portion extending therefrom such that the rear edge of the extension portion is fastened with the front side of the base of the rear seat member by soldering. A flexure space is provided between the back of the plate and the rear seat member to facilitate the flexing of the plate.

Abstract: A golf club head comprises a main body and a ball-hitting face which is fastened to the main body by a brazing layer and an annular soldering portion. The brazing layer is formed between the back of the ball-hitting plate and an annular joining face of the main body. The brazing layer is formed by solidification of a brazing solder held in a trench circumventing the annular joining face of the main body. The annular soldering portion is formed along an annular joining slit located between the ball-hitting plate and the main body.

Abstract: A golf club grip comprises a grip main body and at least one soft tape body. The grip main body is provided with at least one groove in which the tape body is disposed. When a golfer holds the golf club grip, the palms of the golfer come in contact with the grip main body and the tape body, thereby providing a better gripping sensation and preventing the palms of the golfer from sliding on the golf club grip.

Abstract: A golf club head comprises a ball-striking plate which is disposed in the location of a ball-striking face of the golf club head. The ball-striking plate is provided in the back thereof with a plurality of supporting portions which are separated from one another by a predetermined interval. The supporting portions urge the ball-striking plate such that a plurality of stealth grooves are formed by portions, which are not urged by the supporting portions, at such time when the ball-striking plate is impacted on by a golf ball.