| 摘要 |
The innovative aspect of a roller wagon, or "transport roller" (1), consisting of a wagon-frame (2), rollers (5), as well as coupling units at the ends (7,8) for the coupling together of two, or several, transport rollers in series, consists in the number of coupling units, whereby each wagon (1) can be coupled together with the next wagon in line; e.g., by using keyhole shape openings (9)on one side of the transport roller which are arranged to engage with non illustrated coupling gudgeons on the opposite side.In this way, the transport rollers can be coupled together both lengthwise and crosswise without the need for separate coupling implements, as previously was the case.<IMAGE>
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