A bat 10 for playing ball games comprises a handle 12 and a ball-striking head 14 having a monolithic structure comprising a pair of spaced apart outer lattices 16 which define rigid, unstressed ball-striking surfaces and a plurality of discrete internal struts 26 which are integrally moulded with the lattices so as to extend between the lattices. Each lattice includes a distributed and connected network of alternating nodal areas 22 and unobstructed openings 24. Each nodal area comprises a web having an irregular outer surface provided by perforations in the web which reduce an unpleasant high-pitched noise generated when a resilient ball having a smooth outer surface is struck by the bat.

A balanced club head includes an encasing with a face plate, a rear side, left and right side, a top side, and a bottom side, defining an interior, right and left inner longitudinal walls, a shaft aperture, a shaft receptacle, a notch in one of the walls, such that the balanced club head is configured to receive a golf shaft, such that the shaft receptacle is configured to receive a lower end of the golf shaft, which protrudes through the shaft aperture with the notch accommodating an angled position of the golf shaft, thereby creating a counter weight and balance that maximizes distance and provides greater accuracy of direction when mounted on a golf club.

Swimming goggles include two eyepieces with a substantially cup-like shape, a bridge element connecting the two eyepieces at the nose, a strap wrap the head, couple the outer ends of each eyepiece and keep the goggles in place when in use, wherein each of the two eyepieces includes at least one polygonal plan shaped flat front lens or wall and a shell wall composed of a set of polygonal plan shaped flat lenses joined to each other, along adjacent contact edges, and with the peripheral edge of the at least one flat front lens or wall to delimit a reduced volume inner chamber, which is completely open towards the rear part of the eyepiece, that is, towards the eye.

A golf club head is provided with a body that has an address position with a zero degree bounce portion on the sole and a center sole position with a multi-relief surface of the sole having a negative bounce portion. The negative bounce portion may comprise a negative 0.5 to a negative 4.0 degree surface. In one embodiment, the multi-relief surface may comprise the negative bounce portion and a cutaway portion extending to the back of the sole, which may have a depth of about 0.05 to 0.5 inch from a regular sole surface. In another embodiment, the golf club head includes a weight system to adjust the center of gravity. In one embodiment, the weight system is a tube having a weight at one end that may be inserted into the golf club head to move the center of gravity at least forward and backward within 6 mm and up and down within 6 mm. Preferably, the tube is angled downward toward the face by at least 3 degrees.

An exercise bike includes a frame, a rotor assembly and a drive assembly mounted on the frame, where the drive assembly is configured to drive rotation of the rotor assembly, and a cover configured to at least partially cover the rotor assembly. The components of the drive assembly and the rotor assembly include structures that improve the performance of the exercise bike, including but not limited to a strong and rigid construction and improvements in belt tracking, user feel, effort consistency, synchronization, and rotor performance.

A golf club head having a flexible channel to improve the performance of the club head, and a channel tuning system to reduce undesirable club head characteristics introduced, or heightened, via the flexible channel. The channel tuning system includes a sole engaging channel tuning element in contact with the sole and the channel. The club head may include an aerodynamic configuration, as well as a body tuning system.

Some disclosed golf club heads include body having at least one raised sole portion and a cantilevered ledge extending down around a perimeter of the club head below the level of the raised sole portion. Some disclosed golf club heads include one or more sole openings in the body and a sole insert that is mounted inside the body over the sole openings. The sole can include weight tracks as well, and a rear weight track can extend between a toe side sole opening and a heel side sole opening. A crown insert can also be included that is mounted over an upper opening in the body.

A golf club includes a golf club head, a shaft adapter secured within a hosel of the golf club head, and a shaft secured within the shaft adapter. The golf club shaft is formed from a fiber reinforced polymer and extends along a longitudinal axis between a tip end and a grip end. The golf club shaft includes a tip end section, a grip end section, and a tapered section between the tip end section and the grip end section. The tapered section of the shaft includes a reference portion within the upper half that has a frustoconical shape with a near-constant taper rate, and a narrowed portion within the lower half. The narrowed portion is recessed relative to a reference surface extrapolated from the frustoconical shape.

Golf clubs and golf club head structures having an indicator providing a visual indication of a location of a center of gravity of a wood-type golf club are presented. The indicator may include a central portion or hub that is generally aligned with the center of gravity of the club. The indicator may also include a plurality of legs extending outward from the hub toward a perimeter of the golf club head. In some arrangements, the indicator may be formed to distribute a portion of the weight of the club head in order to adjust or move the center of gravity of the club head, in addition to providing a visual indication of the location of the center of gravity.

A golf club includes a shaft and a club head. The club head includes a body member having a ball striking face, a heel, a toe, a back, a crown, a sole, and a hosel region located at the intersection of the ball striking face, the heel and the crown. The sole includes a channel extending from the hosel region toward the toe. An insert is received within the channel. The club head further includes means for detachably securing the insert to the channel. A second insert configured for being received within the channel may be provided.