US 4,357,028 AGranted

Roller skate with improved sole plate

AssigneeChicago Roller Skate Company

InventorEven Hsieh

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Abstract

There is disclosed an improved roller skate having a shoe structure and a unitary sole plate. The sole plate has a bottom surface and an upper surface adapated to receive the shoe structure and defines a heel portion, a toe portion and an instep portion therebetween. The roller skate further includes a pair of truck assemblies secured to the bottom surface of the sole plate at the toe portion and the heel portion by fastener means including a threaded rod and a correspondingly threaded fastener. The sole platet has an aperture for receiving the threaded rod and a recess extending from the upper surface towards the bottom surface. The recess communicates with the aperture and is dimensioned for receiving and confining the threaded fastener therein beneath the shoe structure and to restrain the fastener against rotation. In accordance with a preferred embodiment, the upper surface of the sole plate heel portion is raised with respect to the toe portion so as to form a heel in the sole plate for the shoe structure.

Claims7

Dependent claims

A sole plate for a roller skate of the type including a truck assembly secured to the sole plate by a threaded fastener assembly, said sole plate comprising a unitary structure formed of plastic and having an upper surface and a bottom surface, said upper surface being adapted to be secured to a shoe structure, and including a heel portion, a toe portion, and an instep portion smoothly joining said toe portion with said heel portion, said heel portion being raised with respect to said toe portion so as to form a heel in said sole plate for the shoe structure, said instep portion and said heel portion being hollowed out to define a bottom wall, said instep portion including at least one longitudinal support rib and a plurality of transverse support ribs, and said heel portion including a centrally disposed support rib extending from the sole plate heel end towards said instep portion, said ribs extending from said bottom wall toward said sole plate upper surface, a pair of columns disposed on opposite sides of said heel portion support rib and extending from said bottom wall toward said upper surface within said heel portion, each of said columns including a through bore extending downwardly to said sole plate bottom surface to accommodate securing means for securing the shoe structure to said sole plate in said heel portion, an aperture in said heel portion for receiving a portion of the threaded fastener assembly therethrough, and a recess extending from said bottom wall towards said bottom surface, said recess communicating with said aperture and being dimensioned for receiving and confining an end portion of the threaded fastener assembly therein to restrain said end portion against rotation.

Dependencies are inferred from the claim text.