发明名称 |
Stair cleaning device |
摘要 |
A stair cleaning device intended for cleaning the steps and risers of stairs and other confined areas comprises three heads driven by a motor and a belt and pulley system. The belt is toothed on one side and not on the other side so that some slippage can occur. The advantages of this is improved operational comfort and less likelihood of damage to the drive system.
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申请公布号 |
US5377375(A) |
申请公布日期 |
1995.01.03 |
申请号 |
US19940194502 |
申请日期 |
1994.02.09 |
申请人 |
BTR PLC |
发明人 |
HOLMAN, ANDREW;FAIRBRASS, GRAHAM |
分类号 |
A47L5/36;A47L11/16;A47L11/283;A47L11/40;(IPC1-7):A47L11/16 |
主分类号 |
A47L5/36 |
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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