| 摘要 |
PURPOSE: To prevent liquid in a cylinder from leaking and to prevent as well the liquid in a container body from leaking through a through hole for inducing the outside air when the container is made to fall accidentally, and to produce a pump equipped with abovementioned functions easily at a low cost. CONSTITUTION: This pump for pouring liquid is such that is comprising of an upwardly-energized operating member 5 constructed in a way of moving vertically with an annular piston 24 fitted to the inside of a cylinder 2 provided in projection at the outer circumference on the lower part of a stem 25 while a holding projection stripe 28 at the internal face of the stem 25 is provided in the state of liquidtightness at the underside of a holding projecting stripe 35 of an inlet valve element 7. A coil spring 6, spirally constructed with its lower part expanding downward, is provided so that the holding projecting stripes 28 and 35 can be engaged when the operating member 5 is placed at the uppermost position while the upper edge of the piston 24 closes an opening at the lower end of an annular gap communicating with a through hole 15 for inducing the outside air formed at the upper part of the cylinder. |
