Abstract: A composite golf club head includes a strike plate having a neck formed at an end of the strike plate. A rear portion is formed at an upper side of the strike plate and extends backwards. An inner plate, made up of multiple layers of fiber prepreg material, is adhered to an interior surface of the strike plate by a first of two adhesive sheets. A cover, made up of multiple layers of the fiber prepreg material, is adhered to the back of the rear portion by a second of the adhesive sheets. A bottom plate, made up of a metal material, is adhered to bottom portions of the strike plate and the cover by the adhesive sheets to close the head. A seat is formed inside the bottom plate, and a hole is defined through the seat. A balance member is engaged in the hole.

Abstract: A wood type golf club head has a hollow body, an air fin and air guides. The hollow body has a front, a rear, a crown and a sole. The crown has a top convex surface with a symmetric central line. The air fin is formed perpendicularly from the convex top surface of the crown from the front to the rear of the hollow body along the symmetric central line of the convex top surface. The air guides are defined on the sole with a forked configuration and are extended to the air fin. The air fin and the air guides will reduce external airflow effects during the golf club head moving. Consequently, the motion and direction of the motion of the golf club head will be stable such that a golfer will swing successfully to hit a golf ball.

Abstract: A face of a golf club head includes a recess defined in the face and a striking pad mounted in the recess. The striking pad is a combination of a high-strength alloy, such as titanium alloy, Fe-Al-Mn alloy steel, marging stainless steel or precipitated stainless steel, and a ceramic or carbides filler, such as the Al2O3, SiO2, TiC, WC. etc., so the striking pad has an excellent reactive force when striking a golf ball and good control of the direction of the golf ball.

Abstract: A wood club head includes a hollow base, a top panel and a striking face. The base is integrally formed by casting and has a top opening and a front opening defined therein. A flange extends inwardly from a periphery defining the top opening. The top panel and the striking face are integrally formed together by forging. The top panel is welded onto the base and along an edge of the flange to cover the top opening. The striking face is welded onto the base to cover the front opening. Therefore, the present invention utilizes the advantages of casting and forging to create a high performance club head. Moreover, the welding between the top panel and the base is performed on the flange which extends substantially away from corner edges of the club head to prevent damaging of rigidity of the wood club head.

Abstract: An alloy for golf club head include by weight 25 to 31 wt % manganese, 6.3 to 7.8 wt % aluminum, 0.65 to 0.85 wt % carbon and 5.5 to 9.0 wt % chromium, and the balance being iron. Additions of 0.8 to 1.5 wt % silicon, 2.0 to 5.0 wt % titanium, or 0.5 to 1.0 wt % molybdenum are optionally included in the alloy. Due to the chromium, titanium and molybdenum, the alloy has a good resistance to corrosion, a good finished surface quality after being forged at a temperature from 800° C. to 1050° C. A combination of high ductility and high tensile strength is achieved after the alloy has been treated at a temperature from 980° C. to 1080° C. for 1 to 24 hours.