Various embodiments of a two-piece golf shaft are provided, which include a hollow upper section, a hollow or solid lower section formed from an injection-molded chopped carbon fiber/thermoplastic material, and a coupling insert configured to join the lower section to the upper section (and, optionally, to the golf club head as well).

A sporting implement, such as a blade or shaft for a hockey stick, may include a boron-enhanced fiber material configured to increase the strength and reduce the weight of the structure. This boron-enhanced material may form all or a portion of the sporting implement.

A yoga block includes panels forming a quadrilateral tube and secured to one another by hinges such that the tube may be collapsed. Endcaps secure to ends of the quadrilateral tube and engage the quadrilateral tube to resist collapse when in place. Panels may define protrusions engaging recesses on edges of the endcaps. Magnets in the endcaps may engage the hinges to secure the endcaps in place. Rotating or sliding tabs may also be used to lock the endcaps. Inner surfaces of top and bottom panels may define grooves for receiving a weight plate. Endcaps may be secured to panels by hinges. The hinges securing panels or endcaps may be double hinges.

The present disclosure relates to a shaft for athletic activities comprising, along at least a part of the length of the shaft: an internal wall (31) made of a first fiber-reinforced composite; and an external wall (30), fixed to the internal wall, and made of a second fiber-reinforced composite, wherein one or more cavities (32A, 32B, 32C) are present between the internal wall and the external wall.

The present invention describes an electromechanical exercise machine that simulates the inertia and weight of a mass in Earth's gravity field and allows a user to move said simulated mass in the primary degrees of freedom of a traditional barbell free-weight system, with or without the use of various accessories.

A multi-material golf club head having an improved performance is disclosed. More specifically, the present invention relates to a multi-material golf club head having a metallic frontal striking face portion and aft body portion with a crown opening and a sole opening that are covered by a composite crown sub-shell and a composite sole sub-shell, respectively.

An exercise apparatus includes a linear arm portion having an elongate arm member with proximal and distal ends and an elongate support member having proximal and distal ends. The arm member can be slidably mounted to the support member by a sliding joint. A linear arm brake assembly can be coupled to the arm member for resisting linear motion of the arm member. A torso portion can be included to which the linear arm portion is rotatably mounted about a second axis by rotary shoulder joint. The linear arm portion can be configured, and the rotary shoulder joint can be positioned along the length of the support member at a location that substantially balances the linear arm portion about the rotary shoulder joint at least when the arm member is in the retracted position.

A golf club head includes a main body and a plate member disposed on the main body. The plate member includes a plurality of carbon fiber layers which are stacked on each other and are impregnated with a thermoset carbon fiber resin containing carbon nanotubes. The carbon nanotubes are present in an amount ranging from 0.01 wt% to 5 wt%, based on the total weight of the thermoset carbon fiber resin.

A construct for a hockey stick that includes a shaft having with variable cross-sectional geometry. The shaft may include one or more portions with pentagonal and heptagonal cross-sections that increase the bending stiffness of the hockey stick shaft.

Provided herein is a gaming assembly having two or more collapsible frames, two or more facings, and one or more means for attachment. Each of the frames may be composed of first and second upright frame members that are connected by one or more crossbar frame members to define a vertical plane. Each of the two or more facings is configured to fasten to the upright frame members and the crossbar frame members, covering the vertical plane. The facings feature one or more means for capturing the one or more means for attachment, such as by means of magnetic strips. The means for attachment may be made of a material such as rope with pieces of magnetic metal attached at each end, and is used to connect a first frame to a second frame.