| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To fill a predetermined amount of liquid into a container by a mechanically and electrically simple structure. <P>SOLUTION: When a piston 40 is lowered, an upper packing 49 is closed by receiving an upward pressure from the liquid and a lower packing 36 is opened by receiving a downward pressure from the liquid. When the lower packing 36 is opened, a lower passage 35 is opened, and the liquid between a valve 30 and the piston 40 is discharged from the lower passage 35 through a nozzle 26. When the piston 40 is raised, the upper packing 40 is opened by receiving the downward pressure from the liquid, and the lower packing 36 is closed by an elastic recovering force. When the upper packing 49 is opened, an upper passage 48 is opened, and the liquid is supplied from the inside of a tank 1 to a space part between the valve 30 and the piston 40 through the upper passage 48. Since both a selector valve and an electric circuit for controlling the selector valve are eliminated, a predetermined amount of the liquid can be filled in the container 10 by the mechanically and electrically simple structure. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
