发明名称 |
IMPROVEMENTS IN VACUUM CLEANERS |
摘要 |
A dual filter arrangement for a vacuum cleaner for filtering particles of du st and debris from an airflow passing through the vacuum cleaner, comprising a coar se pre-filter having an array of pores formed therein of substantially uniform diameter and a fine primary filter which is located rearwardly of the pre-filter in the direction of flow of the airflow.
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申请公布号 |
CA2313953(C) |
申请公布日期 |
2007.01.16 |
申请号 |
CA20002313953 |
申请日期 |
2000.07.14 |
申请人 |
BLACK & DECKER INC. |
发明人 |
BONE, DANNY;PEARS, BARRY;COCKBURN, ERIC |
分类号 |
A47L9/12;A47L5/24;A47L9/10 |
主分类号 |
A47L9/12 |
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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