| 摘要 |
A flat rectangular working-surface (1) with integral strengthening spine (2) carrying handle (8) peg holes (3) and notches (4), has two hinge brackets (5) bolted on. Four telescopic legs each with height adjustment, travel-stop and end cap (6) and secured to (4) and may pivot freely at an angle to the horizontal from fully retracted to fully extended positions biased to remain in one of these two positions by means of a toggle-action spring. The legs are fully extended in working mode, and fully retracted when not in use for ease of carrying and storage. See Figures 1-3. |
