| 摘要 |
he invented multiple use hand-operated piston pump is composed of a rhomboid head 1, a curve shaped outlet part 3, a pumping pipe part 2 with a special base 9 bearing the valve 12 and the liquid inlet 13. A piston 4 with external grip 5a on its upper end and a specially constructed valve 5, 6, 7, 8 on its lower end, as well as a tapered component 14 constituting means of supporting, stablelising and mounting the pipe part 2 of the pump on the opening of whatever liquid container. |
