초록 ▼

A roller disc assembly is provided comprising a stationary disc platform beneath which is rotatably mounted a disc wheel, said wheel having at least partially a flat bottom surface. A ball bearing ring is sandwiched between said disc platform and wheel, the combination held together by a bolt fitted

A roller disc assembly is provided comprising a stationary disc platform beneath which is rotatably mounted a disc wheel, said wheel having at least partially a flat bottom surface. A ball bearing ring is sandwiched between said disc platform and wheel, the combination held together by a bolt fitted through a tubular channel bored perpendicular to the roller disc assembly. Furthermore, a skate is provided comprising a foot supporting member and the roller disc assembly. In a preferred embodiment, the skate is additionally fitted with a ball bearing caster mounted beneath the toe area of the foot supporting member.

대표청구항 ▼

A roller disc assembly comprising: a stationary disc platform having a tap hole having an axis; a ball bearing ring lying horizontally within said hole in a plane perpendicular to said axis; a cylinder defining the inward wall of said ball bearing ring, said cylinder being freely rotatable and formi

A roller disc assembly comprising: a stationary disc platform having a tap hole having an axis; a ball bearing ring lying horizontally within said hole in a plane perpendicular to said axis; a cylinder defining the inward wall of said ball bearing ring, said cylinder being freely rotatable and forming part of a tubular channel perpendicularly penetrating through the width of said disc platform along said axis; a disc wheel; a central flat circular surface forming the lower face of said disc wheel; a tubular channel formed by an aperture directed perpendicular to said surface and penetrating the full width of the disc wheel; a ball bearing ring lying horizontally within said aperture, said disc platform and disc wheel channels being aligned and of essentially equal diameter; a ball bearing ring communicating with a bottom surface of said disc platform and a top surface of said disc wheel; and a connecting member passing through both of said disc platform and disc wheel tubular channels to fastenably hold together said disc platform and disc wheel.