Cohomology of groups

Abstract

A rink-type roller skate is provided with a plastic sole plate. To mount a toe stop on the skate, a novel bushing is embedded in the sole plate. The bushing has relatively small diameter ends and a large diameter midportion which is aggressively surfaced. Axial and rotational forces are transmitted to the sole plate through the bushing, while movement of the bushing in the plate and plate cracking are inhibited.