Abstract: A fastening system for attaching a wheel to the shoe portion of an in-line skate, which includes a pair of first and second opposing walls that depend from the shoe portion, each having a bottom edge. A pair of opposing slots formed in the walls, each having an open end at the bottom edges of the walls. A safety recess is formed on each of the first and second walls adjacent the slots. Two frame spacers each include a flange portion surrounding a raised shoulder plug. The plug and flange portions having a through-hole formed therethrough. Each of the flange portions have a safety protrusion formed thereon adjacent the plug. The plugs are inserted into the slots such that the safety protrusions removably engage the safety recesses. A wheel having an axle hole formed through its center of rotation is positioned between the pair of slots.

Abstract: A street or roller hockey puck that includes a plurality of rotational members that are supported in a ring configuration. The rotational members can be cylindrical wheels or spherical rollers. The preferred embodiment includes wheels each having an axis of rotation that is perpendicular to a plane that contains both the central axis of the ring configuration and a radius formed between the central axis and each wheel. An alternate embodiment includes spherical rollers that freely rotate within a housing and protrude through the circumferential side of the puck and at least through one of the top and bottom surfaces.