| 摘要 |
<p>A supermarket trolley has a basket (2) pivotally supported on pivots (18) between a pair of parallel X-frames (1), each frame consisting of a curved first frame member (3) and a shorter, straight second frame member (4) pivotally connected together about the axis of a basket abutment and support rod (5). The basket is capable of being pivoted relative to the frame from a normal, load-carrying orientation (Figure 1) through about 90° to a nestling orientation (Figure 2) and in the latter orientation trolleys can be arranged as a vertical stack or as a horizontal nestled group. The basket is stably held in both its normal and nestling orientations by virtue of the positioning of the centre of gravity (25), and by the action of a pair of control links (22), each link being connected between a point (23) on the basket spaced from the basket pivots (18) and one end (24) of the respective second frame member (4).</p> |
