发明名称 |
Device for draining sandy ground areas |
摘要 |
A device for draining sandy ground areas, such as tennis-courts, includes an air pump, water separating elements and a suction device. A suction pipe connects the pump to the water separating elements and the water separating means to the suction device. In order to prevent sand from being removed from the ground during the draining process, the suction device has a relatively large inlet is covered by an open-pore, elastic foam plastics material.
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申请公布号 |
US4386873(A) |
申请公布日期 |
1983.06.07 |
申请号 |
US19800218011 |
申请日期 |
1980.12.18 |
申请人 |
MESSNER, FRANZ;UNTERWADITZER, ADOLF |
发明人 |
MESSNER, FRANZ;UNTERWADITZER, ADOLF |
分类号 |
E01H1/10;(IPC1-7):A47L11/29 |
主分类号 |
E01H1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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