| 摘要 |
A caster for shopping and transport trolleys which are suitable for conveyance on travelators, includes a wheel fork provided with fork arms and carrying an axle body having a round cross-section and extending through a hub which is arranged between the fork arms and on which two running wheels are mounted, the hub having a crosspiece arranged between the running wheels and the outer contour of the crosspiece having a cylindrical or other geometrically uniform shape, and comprising at least one supporting means arranged on at least one of the two fork arms and intended to support the caster when its running wheels are located in the grooves-separated by bridge pieces-of the conveyor belt of a travelator, wherein, measured from the floor, the lowermost boundary of the crosspiece of the hub is arranged higher than the contact surface of the at least one supporting means. |
