Wheel set, for cycles and roller skates/boards and suitcases and the like, has a primary wheel with freely rotating side wheels for safety and steering around curves

摘要

The wheel set has a primary wheel (1) and two secondary wheels (2) at both sides. The primary wheel has a circular rotary component (11) at both sides, for matching circular rotary components (21) at the secondary wheels, to lock the assembly together with rotation.