Supermarket trolley wheel arrangement has a triangular brace mounted on the axle of the supermarket trolley with small wheels mounted at the end of each leg of the brace

摘要

Replacement for the conventional wheel of a supermarket trolley comprises an array of three small wheels mounted on a triangular brace (1) with three equal legs extending from the center. At the end of each leg is a small wheel whose radius is smaller that the distance between its mounting axle (3) and the center of the brace. Held in the center of the brace is the main trolley axle (2).