| 发明名称 |
Wet pickup attachment for vacuum cleaners |
| 摘要 |
A wet pickup attachment for vacuum cleaners has a pair of independent float operated valves to close primary and secondary exhaust openings responsive to different water levels in a collection tank and thereby prevent aspiration of water into a vacuum cleaner that powers the attachment.
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| 申请公布号 |
US6517596(B2) |
申请公布日期 |
2003.02.11 |
| 申请号 |
US20010972399 |
申请日期 |
2001.10.05 |
| 申请人 |
THE SCOTT FETZER COMPANY |
发明人 |
DODSON DIANE L.;BADLEY WILLIAM G.;KONSTANTACOS CHRIS |
| 分类号 |
A47L7/00;(IPC1-7):B01D35/157 |
主分类号 |
A47L7/00 |
| 代理机构 |
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代理人 |
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