| 摘要 |
1. A transport cart having three wheels situated under a support platform in a triangular disposition, characterized in that it comprises two pivoting wheels (2) fixed under the platform (1) at two vertex of the triangular disposition, the third, fixed, wheel being fixed at the third vertex, the side (4) defined by the pivoting wheels (2) being situated parallel to the direction of movement when this latter is a straight line, so as to enable any point placed on a straight line (6) passing through the vertex defined by the fixed wheel (3) and perpendicular to the side (4) to move parallel to and at a non-varying distance from a plotting which may comprise one or more straight lines, acute, obtuse or right angles, as well as to pivot concentrically to curves. |
