发明申请
- 专利标题： Vacuum cleaner equipped with sound cancellation generator
- 专利标题（中）： 吸尘器配有隔音发生器
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申请号： US11243374申请日： 2005-10-04
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公开(公告)号： US20060070203A1公开(公告)日： 2006-04-06
- 发明人: Richard Fischer
- 申请人： Richard Fischer
- 主分类号： A47L5/00
- IPC分类号： A47L5/00
摘要：
A floor cleaning apparatus includes a housing, a suction generator having a motor and a sound cancellation generator. During operation of the apparatus the motor produces a first sound and the sound cancellation generator produces a second sound. The second sound produced by the sound cancellation generator is substantially 180 degrees out of phase with the first sound so that noise generated during operation of the floor cleaning apparatus is reduced.
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