A manufacture method for partial structure refinement of a forged iron golf club head includes a preparing step, a first preforming step, a second preforming step, a fine-forging shaping step, a partial structure refinement step, and a final shaping step. The manufacture method is capable of partially refining the particle structure of the final workpiece. The hardness of a hitting surface of the final workpiece is reinforced to generate clear and loud sounds and to achieve better hitting performance and experience.

A manufacture method for partial structure refinement of a forged iron golf club head includes a preparing step, a first preforming step, a second preforming step, a fine-forging shaping step, a partial structure refinement step, and a final shaping step. The manufacture method is capable of partially refining the particle structure of the final workpiece. The hardness of a hitting surface of the final workpiece is reinforced to generate clear and loud sounds and to achieve better hitting performance and experience.

A golf club head includes a metallic section, a polymeric section, and an adhesive material. The metallic section defines an opening and the polymeric section extends over the opening. The adhesive material is disposed between the metallic section and the polymeric section to form an adhesive joint therebetween. The adhesive joint has an adhesive retaining strength configured to inhibit the polymeric section from being detached from the metallic section when the adhesive material is at least partially cured. The metallic section and the polymeric section are also mechanically engaged with one another to form a mechanical joint therebetween having a mechanical retaining strength configured to inhibit the polymeric section from being detached from the metallic section. The adhesive retaining strength of the adhesive joint, alone, is greater than the mechanical retaining strength of the mechanical joint, alone, only when the adhesive material is at least partially cured.

Methods of bifurcating the material properties of golf club heads, and wedges in particular, are disclosed herein. The methods of the present invention preserve the bendability and feel of certain parts of the club heads, such as hosel regions, while selectively hardening and increasing the durability of other features, such as scorelines and texturing on the face.

A co-forged iron type golf club is disclosed. More specifically, the present invention discloses a co-forged iron type golf club with the body portion made out of a first material and at least one weight adjustment portion monolithically encased within the body portion of the co-forged iron type golf club head without the need for secondary attachment or machining operations. The present invention creates of an iron type golf club head from a pre-form billet that already contains two or more materials before the actual forging process resulting in a multi-material golf club head that doesn't require any post manufacturing operations such as machining, welding, swaging, gluing, and the like.

A co-forged iron type golf club is disclosed. More specifically, the present invention discloses a co-forged iron type golf club with the body portion made out of a first material and at least one weight adjustment portion monolithically encased within the body portion of the co-forged iron type golf club head without the need for secondary attachment or machining operations. The present invention creates of an iron type golf club head from a pre-form billet that already contains two or more materials before the actual forging process resulting in a multi-material golf club head that doesn't require any post manufacturing operations such as machining, welding, swaging, gluing, and the like.

A forged golf club face has a continuous outer layer of a first material encasing at least one inner layer made of second material. The materials may have differing properties, such as Young's Modulus, density, and strength properties, among others. By incorporating the different materials into the outer layer and the inner layer, the coefficient of restitution (COR) of the golf club face is improved without sacrificing durability. The club face is forged from a pre-formed billet having at least one monolithically encased inner layer.

A forged golf club face has a continuous outer layer of a first material encasing at least one inner layer made of second material. The materials may have differing properties, such as Young's Modulus, density, and strength properties, among others. By incorporating the different materials into the outer layer and the inner layer, the coefficient of restitution (COR) of the golf club face is improved without sacrificing durability. The club face is forged from a pre-formed billet having at least one monolithically encased inner layer.

Conditioning devices for conditioning blades are provided. A conditioning device includes a first rod and a second rod, at least one of the first rod and the second rod rotatable about an axis, the first rod and the second rod oriented to define a blade conditioning zone therebetween, the blade conditioning zone being defined by a blade conditioning angle between the first rod and the second rod. The conditioning device further includes a stationary magnet and a movable magnet. The movable magnet is connected to the one of the first rod and the second rod and rotatable about the axis. The movable magnet has an opposite magnetic orientation relative to the stationary magnet. Rotation of the one of the first rod and the second rod adjusts the blade conditioning angle.

A fishing line guide including an attachment foot having a thin thickness, a shorter length and a high strength. The fishing line guide includes at least one support leg, an attachment foot located at a distal end of the support leg, and a reinforcement groove formed in the attachment foot. The attachment foot has a lower surface making contact with a portion of a fishing rod, an upper surface located opposite the lower surface in a thickness direction, one end connected to the distal end of the support leg, and an opposite end located opposite the one end in a longitudinal direction. The reinforcement groove extends along the longitudinal direction of the attachment foot from the one end toward the opposite end in the lower surface of the attachment foot. A portion of the support leg and the attachment foot are made of a metallic material.