Abstract: A demolding device includes a support attached to a molding assembly for forming a wax pattern, a rod, a connecting member, and a lever. A first end of the rod is attached to a molding rod for forming the wax pattern. The connecting member has a first end fixed to the support and a second end. The lever has an end pivotally connected to the second end of the rod and the second end of the connecting member. The lever is pivotable between a first position in which the molding rod is moved into the mold assembly and a second position in which the molding rod is moved out of the mold assembly.

Abstract: A mold assembly for forming a wax pattern in the shape of a golf club head includes a plurality of outer molds coupled together to defined a cavity and an inclined tunnel therein, with a plurality mold cores received in the cavity and a supporting member received in the inclined tunnel, in order to form a wax pattern which has an opening formed in an inclined front face thereof. Furthermore, both the tunnel and a parting plane between the mold cores make such a compensatory angle with horizontal surfaces of the outer molds that the opening of the wax pattern may be delimited by a peripheral wall perpendicular to a front face of the wax pattern.

Abstract: A reinforced golf club head includes a reinforcing plate, a curved sole plate, a striking plate and a crown plate. The reinforcing plate is welded to the sole plate in a lip area adjacent to the striking plate before the sole plate, striking plate and crown plate are joined together, so as to strengthen the sole plate and hence allow the lip area to withstand a relative large stress resulted from impact produced during striking a ball.

Abstract: A golf club head includes a golf club head body and a striking plate. The golf club head body has an opening on a front side thereof, with a flange being formed on the front side and extending along an outer peripheral edge defining the opening. A plurality of engaging notches are defined in the flange. The striking plate has a plurality of supporting rods. Each supporting rod is engaged in an associated one of the engaging notches when the striking plate is inserted into the opening of the golf club head body to thereby support the striking plate and to thereby position the striking plate in the opening of the golf club head body before high energy welding.

Abstract: A laser engraving and coloring method for a golf club head using a laser beam to process on a titanium alloy surface. Processing conditions of the laser beam are laser frequency in the range of 7500-35000 Hz, current in the range of 14-17 A, power in the range of 25-45 W, moving speed in the range of 5-55 M/sec, and process route as an ellipse to thereby form various predetermined colors.

Abstract: The present invention provides a striking plate having an outer surface and an inner surface. The outer surface serves as a striking face formed with a plurality of grooves, and the inner surface is a highly-polished face with a surface roughness below 6.3 &mgr;m so as to eliminate surface defects that may otherwise cause contraction of impact stress. The striking plate can be integrated with a sole plate and a crown plate into a golf club head.

Abstract: A reinforced golf club head includes a reinforcing plate, a curved sole plate, a striking plate and a crown plate. The reinforcing plate is welded to the sole plate in a lip area adjacent to the striking plate before the sole plate, striking plate and crown plate are joined together, so as to strengthen the sole plate and hence allow the lip area to withstand a relative large stress resulted from impact produced during striking a ball.

Abstract: A method for combining a golf club head and a ball striking plate, includes the following steps: letting an outer edge of a ball striking plate and an inner edge of a recessed seat of a golf club head incline outward matingly, and forming an annular welding flange around a periphery of the recessed seat of the golf club head; using at least one press block to press the welding flange of the golf club head to form a deformation; using a high energy welding manner to melt and join an interface of the golf club head and the ball striking plate; and trimming the welded interface of the golf club head and the ball striking plate.

Abstract: A laser engraving and coloring method for a golf club head using a laser beam to process on a titanium alloy surface. Processing conditions of the laser beam are laser frequency in the range of 7500-35000 Hz, current in the range of 14-17 A, power in the range of 25-45 W, moving speed in the range of 5-55 M/sec, and process route as an ellipse to thereby form various predetermined colors.

Abstract: An iron club head includes a body including a loop portion defining a compartment therein, a striking plate mounted to a front face of the loop portion, and a gasket mounted between the striking plate and the loop portion for providing a regular flat outer surface. In another embodiment, an iron club head comprises a body, a striking plate, and a gasket. The body includes a stepped portion and a notched portion together defining a compartment therein, a lip being formed outside the stepped portion. The striking plate is mounted to a front face of the loop portion and retained in place by the lip of the body. The striking plate includes a protruded portion embedded in the notched portion of the body. A gasket is mounted between the protruded portion of the striking plate and the notched portion of the body for providing a regular flat outer surface.

Abstract: A bonding pad structure. A substrate having a first surface and a second surface is provided. A metal bonding pad and a bonding region are respectively located on the first surface and the second surface. Intermediate plated layers located are on the metal bonding pad and the bonding region. Under ball metallurgy layers are located on each of the intermediate plated layers such that each of the under ball metallurgy layers comprises a first plated layer and a second plated layer.

Abstract: An improved capacity regulating apparatus for compressors is disclosed. The design comprises a chamber, a sliding member coupled to the chamber and a pair of rotors abutting to and below the sliding member. A piston disposed in the cylinder and the sliding member are coupled to a rod, enabling the sliding member to move axially along a portion of the rod. Two opposite guide slots are provided in opposite sides of the sliding member. A lateral slot is provided inside the sliding member to allow the guide slots in communication with each other; also, an axial slot, extending through a bottom wall of the sliding member, is provided inside the sliding member.