A method for applying base paint non-uniformly to a golf shaft includes: inserting a portion of a golf shaft lengthwise through an aperture in a paint applicator, the paint applicator having a first surface and a second surface opposite the first surface, where one of (a) the aperture is non-circular and (b) the aperture includes a plurality of slits formed circumferentially around the aperture; actuating a painting apparatus, thereby causing the base paint to contact the golf shaft and the second surface of the paint applicator; and pulling the golf shaft lengthwise through the aperture in the paint applicator, thereby non-uniformly applying the base paint lengthwise along the portion of the golf shaft.

A method for applying base paint non-uniformly to a golf shaft includes: inserting a portion of a golf shaft lengthwise through an aperture in a paint applicator, the paint applicator having a first surface and a second surface opposite the first surface, where one of (a) the aperture is non-circular and (b) the aperture includes a plurality of slits formed circumferentially around the aperture; actuating a painting apparatus, thereby causing the base paint to contact the golf shaft and the second surface of the paint applicator; and pulling the golf shaft lengthwise through the aperture in the paint applicator, thereby non-uniformly applying the base paint lengthwise along the portion of the golf shaft.

A construct for a hockey stick formed from layers of fiber tape and a reinforcing nanofiber material. The nanofiber is integrated into the molded hockey stick to increase the strength and toughness of inter-laminar bonds between the fiber tape. The nanofiber may include carbon nanotubes.

A process for manufacturing a putter with a bi-material shaft is disclosed herein. The putter comprises a putter head, the bi-material shaft, a mass member and a grip. The bi-material shaft comprises a body with a tip end and a butt end. The body comprises a metal section extending from the tip end to a connection point, and a composite section extending from the butt end to the connection point. The mass member is positioned within an opening at the butt end of the shaft. Mass from the shaft is transferred to the club head and the mass member in the butt end of the shaft.

A process for manufacturing a putter with a bi-material shaft is disclosed herein. The putter comprises a putter head, the bi-material shaft, a mass member and a grip. The bi-material shaft comprises a body with a tip end and a butt end. The body comprises a metal section extending from the tip end to a connection point, and a composite section extending from the butt end to the connection point. The mass member is positioned within an opening at the butt end of the shaft. Mass from the shaft is transferred to the club head and the mass member in the butt end of the shaft.

A flexible putter shaft may be interchanged with a stiff putter shaft even though the two shafts have markedly different properties including different diameters, different degrees of elasticity, and so on. An external adapter for a flexible putter shaft and an internal adapter for a stiff shaft allow either one to be fastened through a customized hole on the hosel of a putter head using a locking fastener and tool.

Disclosed herein are composite shafts for sporting goods, such as archery arrows, golf clubs, and rifles, which include a reinforcing layer to improve the performance of the sporting goods.

Disclosed herein are composite shafts for sporting goods, such as archery arrows, golf clubs, and rifles, which include a reinforcing layer to improve the performance of the sporting goods.

A golf club includes a head; a shaft having a tip end and a butt end; a grip; and a weight member that is located in a butt end region having a distance from a butt end of the grip of less than or equal to 100 mm. The grip and the weight member constitute a grip-weight portion. The shaft, the grip, and the weight member constitute a shaft-grip-weight portion. The shaft has a weight of less than or equal to 40 g. The shaft has a shaft torque of less than or equal to 7.0°. The grip-weight portion has a weight of greater than or equal to 40 g. A ratio W1/W3 of a weight W1 of the butt end region to a weight W3 of the shaft-grip-weight portion is greater than or equal to 0.40.

A golf club includes a head; a shaft having a tip end and a butt end; a grip; and a weight member that is located in a butt end region having a distance from a butt end of the grip of less than or equal to 100 mm. The grip and the weight member constitute a grip-weight portion. The shaft, the grip, and the weight member constitute a shaft-grip-weight portion. The shaft has a weight of less than or equal to 40 g. The shaft has a shaft torque of less than or equal to 7.0°. The grip-weight portion has a weight of greater than or equal to 40 g. A ratio W1/W3 of a weight W1 of the butt end region to a weight W3 of the shaft-grip-weight portion is greater than or equal to 0.40.