One object is to provide a golf club equipped with a shaft made of FRP, the golf club being excellent in swing feeling and ball-hitting feeling and capable of stabilizing directional accuracy in ball hitting. The golf club according to the present invention is characterized in that it includes a shaft made of a fiber-reinforced resin mounted to a head, and the shaft is formed so that a variation of a ratio between torsional rigidity and bending rigidity (GIp/EI) is 0.2 or less over an entire length thereof.

A golf club shaft formed by winding prepregs, made of reinforced fibers impregnated with a thermosetting resin, into layers and thermally curing the prepregs. The golf club shaft includes a 90-degree prepreg, a fiber direction of which is orthogonal to a longitudinal direction of the golf club shaft and which is provided on each of an inner layer side and an outer layer side, and the golf club shaft satisfies the following condition: 2.0D2/D14.0, wherein D1 designates a thickness of the inner-layer-side 90-degree prepreg, and D2 designates a thickness of the outer-layer-side 90-degree prepreg.

A shaft 6 includes at least two hoop layers s3 and s8, at least one bias layer, and at least one straight layer. An interposition layer other than the hoop layer is present between every opposing hoop layers. An average thickness of the opposing hoop layers is defined as t, and a total thickness of the interposition layer is defined as T. The shaft 6 satisfies the following formula (1):
T/t1.9(1).

The present disclosure provides a layered structure including a first layer with a multiple of openings, a second layer, and a component including a multiple of columns with connecting segments therebetween, the connecting segments are disposed between the first layer and the second layer so that each of the columns extend at least partially through at least one of the multiple of openings.

The present disclosure provides a multi-layered structure including a first layered structure with a multiple of first openings, a first component with a multiple of first columns, each of said multiple of first columns extend at least partially through one of the multiple of first openings, a second layered structure with a multiple of second openings, and a second component with a multiple of second columns, each of said multiple of second columns extend at least partially through one of the multiple of second openings, wherein the first layered structure includes a first characteristic and the second layered structure includes a second characteristic, the first characteristic different than the second characteristic.

A hockey stick blade comprising a front and a rear blade face, the front blade face comprising at least one front layer of reinforcing fiber material having a first reinforcing fiber density, and the rear blade face comprising at least one rear layer of reinforcing fiber material having a second reinforcing fiber density, the first reinforcing fiber density differing from the second reinforcing fiber density. A hockey stick having such a blade is also disclosed.

A walking/treadmill with an integrated base and a manufacturing method for the integrated base are provided. The walking/treadmill with an integrated base includes an integrated base, a running board, a running belt, a motor, an electric control, and a drum. The integrated base is provided with an installation part configured to install the running board, the running belt, the motor, the electric control, and the drum. The base includes a transverse beam, a longitudinal beam, and an installation cavity shell provided between the transverse beam and the longitudinal beam. The transverse beam, the longitudinal beam, and the installation cavity shell are all made of reinforced plastic and are integrally injection molded. The present disclosure has advantages of simple production, high structural strength, and overall lightweight, thereby reducing logistics costs.

A golf club includes a face coupled to a body. A composite axis extends from a heel to a toe of the club and parallel to ground. The face is formed of a fiber composite material including at least first and second sets of ply arrangements. Each of the ply arrangements includes a pair of plies having first and second pluralities of fibers defining first and second angles with respect to the composite axis, respectively. The face has a ball contact surface, an rear surface, and a mid-zone positioned equidistant between the contact and rear surfaces. A majority of the first and second pluralities of fibers of the ply arrangements between the mid-zone and the contact surface are formed of glass fibers, and a majority of the first and second pluralities of ply arrangements between the mid-zone and the rear surface are formed of carbon fibers.

Golf club head faceplates have reinforcement components located on an inner surface of the faceplate to selectively reinforce an outer metallic layer of the faceplate, allowing a reduction of the thickness of the metallic layer, which increases ball speed. The reinforcement layer or component enables the CT to remain at a conforming level and provides sufficient durability.

Embodiments of a co-molded putter-type golf club head comprising a high-density chassis made of a first material and a low-density putter-type body made of a second material. The first material can be a high density metal (i.e., steel or tungsten, but not limited to). The second material can be a low density thermoplastic composite (i.e., polyphenylene sulfide (PPS), polyamide (PA), but not limited to). The chassis comprises a flow aperture, and one or more interlocking features. The putter-type body portion encases the entirety of the at least one interlocking feature. Further, the putter-type body encapsulates the chassis such that the body extends through, and completely fills the flow aperture, to interlock the body and chassis, and thus form the club head. Other embodiments may be described and claimed.