Patent application number | Description | Published |
20090270199 | GOLF CLUB HEAD - A golf club head has a three-piece construction, including a front piece, an intermediate piece and a rear piece. The front and rear pieces are made of metal, while the intermediate piece is made of fiber-reinforced plastic, composite material or metal. The intermediate piece is jointed to the front and rear pieces by means of adhesives or welding. Bolts are provided in a lower portion of the rear piece to threadingly engage the front piece to securely fix all the pieces together to form the golf club head, which has a lowered gravity center and enhanced striking stability. | 10-29-2009 |
20100009774 | GOLF CLUB HEAD OF HETEROGENEOUS METALS - The present invention provides a golf club head of heterogeneous metals, which includes a main body having a front side forming a fitting cavity to which a striking face plate made of a metal having a specific weight less than nine is fit and a bottom side which is enclosed by a sole member made of a metal having a specific weight great than twelve to thereby lower the gravity center of the club head to ensure stability of ball striking and also reduce the area on which welding operation is carried out so as to effectively reduce the manufacturing costs. | 01-14-2010 |
20100029418 | COMPOSITE BASEBALL BAT AND MANUFACTURING METHOD THEREOF - The method first provides a tubular outer member, a tubular inner member, and a head cap. Then, the inner member is threaded into the outer member and sealed inside by the head cap. The assembly is then placed in a mold, heated, and pressurized into a baseball bat. Due to its dual-layered structure, the baseball bat is capable of delivering superior performance and shock absorption. A material different from that of the outer and inner members could be further stuffed between the outer and inner members. | 02-04-2010 |
20100099512 | SHANK OF FOUR-PIECE FORGING OF GOLF CLUB HEAD - Disclosed is a shank of a four-piece forging of golf club head. Atop piece of the four-piece forging of club head forms, at a portion thereof adjacent to the shank, a two-staged structure of an outward flaring sector-shaped connection portion that is combined with the shank, whereby an abutting condition exhibiting a smooth surface is formed at a jointing site between the shank and the club head in the course of performing welding operation between the shank and the club head for reducing the amount of filling material used in carrying out the welding operation and making the welding operation, as well as the subsequent grinding operation, easier and smoother. Thus, with the quality improved, the flexibility of design can also be enhanced to reduce the machining time and the manufacturing costs. | 04-22-2010 |
20110237345 | DIRECTION CHANGE STRUCTURE OF GOLF CLUB HEAD - A direction change structure of golf club head includes a ferrule that is fit to a body of a club head for coupling a shaft of a golf club. The ferrule includes an eccentric feature and has a separation preventing threaded member embedded therein. The body of the club head has a sole in which a recessed cavity is formed to correspond to the joint portion. A fastening threaded member is fit with a washer and is inserted through the recessed cavity to threadingly engage the separation preventing threaded member for fixing the ferrule. As such, with the fastening threaded member loosened, the ferrule is rotatable to realize direction change in order to enhance ball hitting performance. | 09-29-2011 |