| 摘要 |
A traffic hazard warning device is moulded from plastics material and has an upper conical or other body (12) and an annular hollow supporting base (10) having outer walling (16) and inner walling (20). From an upper free end of inner walling (20) a skirt (24) depends after initial moulding (shown to the right in Fig. 1) being connected to walling (20) by annular corrugations 26, and is thereafter folded, in accordance with one step of a method of the invention (as shown to the left in Fig. 1), to lie adjacent a lower portion of walling constituting the body (12) and is secured thereto as by adhesive to render the base (10) hollow and fluid tight, enabling such hollow base (10) to be filled (via a plugged aperture, not shown) with a fluid such as water or sand to impart stability to the device in use. <IMAGE> |
