| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a negative pressure pump enabling the water intruded therein to be easily discharged. <P>SOLUTION: A plurality of final discharge ports 81L, 81R for discharging air to the outside are provided to a negative pressure pump 10. When the negative pressure pump 10 is tilted, air can be discharged through the upper final discharge port 81L (or 81R) and water or the like can be discharged through the lower final discharge port 81R (or 81L), thereby the discharge performance of the negative pressure pump can be maintained. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
