A method of assembling a portable fenced-in ball playing area that includes a plurality of panels that have an upward slot on one end of the panel and a downward slot at the other end of the panel. The panels are assembled into a polygon shaped pit, such as for a Ga-ga pit, by fitment of upward and downward slots on adjacent panels. No tools are necessary for assembly. The panels can include hand holes for easy carrying. Some panels may have a top indentation or recess to assist children in entering or leaving the fenced-in ball playing area, such as a Ga-ga pit. These panels can be reversed so that the recess is facing downward to form a goal opening for a game using a ball, puck or the like.

A method of assembling a portable fenced-in ball playing area that includes a plurality of panels that have an upward slot on one end of the panel and a downward slot at the other end of the panel. The panels are assembled into a polygon shaped pit, such as for a Ga-ga pit, by fitment of upward and downward slots on adjacent panels. No tools are necessary for assembly. The panels can include hand holes for easy carrying. Some panels may have a top indentation or recess to assist children in entering or leaving the fenced-in ball playing area, such as a Ga-ga pit. These panels can be reversed so that the recess is facing downward to form a goal opening for a game using a ball, puck or the like.

A ring for a fighting sport has a circular fighting area defined by a plurality of circular fence rings that are held up by posts. Shock absorbers connect the fence rings to the posts. Position markers are provided to indicate the starting positions of the participating fighters at certain points during the bout.

A ring for a fighting sport has a circular fighting area defined by a plurality of circular fence rings that are held up by posts. Shock absorbers connect the fence rings to the posts. Position markers are provided to indicate the starting positions of the participating fighters at certain points during the bout.

A sports ball rebound and boundary system including at least one portable post portion, configured to in use stand upright unsupported, and a barrier portion. The post portion and the barrier portion are configured for mutual releasable connection so that at least part of the barrier portion is extendible from the post portion to form a substantially vertically aligned planar barrier extending upwards from substantially ground level. The barrier portion is further configured to in use remain under sufficient tension to cause a ball or similar to rebound when striking the barrier.

A sports ball rebound and boundary system including at least one portable post portion, configured to in use stand upright unsupported, and a barrier portion. The post portion and the barrier portion are configured for mutual releasable connection so that at least part of the barrier portion is extendible from the post portion to form a substantially vertically aligned planar barrier extending upwards from substantially ground level. The barrier portion is further configured to in use remain under sufficient tension to cause a ball or similar to rebound when striking the barrier.

A sliding carpet assembly and a sliding carpet. The sliding carpet assembly comprises multiple roll shaft units. Each roll shaft unit comprises a roll shaft (310), and a fixing catch (210) in contact with and connected to one side of the roll shaft (310). The fixing catch (210) includes a supporting body. The supporting body is provided with a first through hole (213) and a second through hole (214). The axis of the first through hole (213) and the axis of the second through hole (214) are perpendicular to each other and do not intersect with each other. Moreover, the sliding carpet assembly further includes multiple connecting ropes (100). In a first direction, the connecting ropes (100) pass through the first through holes (213) to connect the multiple sequentially arranged roll shaft units in series. In a second direction perpendicular to the first direction, the connecting ropes (100) pass through the second through holes (214) to sequentially connect the multiple sequentially arranged fixing catches (210).

An amusement apparatus having a primary structure which receives and supports a first belt which spans in a longitudinal direction between belt supports and in a transverse direction; the first belt having an upper surface and an underside surface; a sub structure having at least two spaced apart pulleys which accommodate a secondary belt having inner and outer surfaces and which in use, travels about said at least two pulleys; the inner surface of the secondary belt engaging the at least two spaced apart pulleys. The outer surface of the secondary belt having at least one outstanding formation which engages the underside surface of the primary belt during at least part of travel of the secondary belt about said at least two pulleys, thereby inducing in the primary belt a contour which substantially conforms to the shape of said at least one formation of the secondary belt.

Various devices utilize rotational movement of a piece of chalk to apply a graphic to a surface. Such a device includes a chassis, a motor connected to the chassis, a solid piece of chalk supported by a mounting structure carried by the chassis, and a rotatable axle or spindle that transmits rotational movement from the motor to the solid piece of chalk via the mounting structure such that the solid piece of chalk may be sanded by a surface to render a graphic to the surface. Some such devices are vehicles. Various systems include such devices as well as remote communication devices for operational control.

Various devices utilize rotational movement of a piece of chalk to apply a graphic to a surface. Such a device includes a chassis, a motor connected to the chassis, a solid piece of chalk supported by a mounting structure carried by the chassis, and a rotatable axle or spindle that transmits rotational movement from the motor to the solid piece of chalk via the mounting structure such that the solid piece of chalk may be sanded by a surface to render a graphic to the surface. Some such devices are vehicles. Various systems include such devices as well as remote communication devices for operational control.