| 摘要 |
A roller (10) comprises a tubular base (12), capable of rotating around an axis (X-X), and a plurality of tyres (14) of the semi-hollow type, mounted around the tubular base, and pairs of spacer parts (16), formed to keep the tyres (14) at a distance from the tubular base (12). In doing so each of the spacer parts (16) has a hub (18), capable of putting on the tubular base (12), and an artificial side (20). The outer sides (20) of the spacer parts (16) of one pair are formed in such a manner as to allow them keeping a ring-like holding area (22) of a tyre, an elastic ring (24) is arranged each time around a circle of the tubular base (12) in a spacing between the hubs (18) of two spacer parts (16), which belong to two adjacent pairs. |
