发明名称 |
Changing Amplitude of Movement By Changing the Drive Frequency of a Toothbrush Brushhead |
摘要 |
The drive system drives a brushhead at a driving frequency. The drive system includes a frequency modulation system which changes. the driving frequency about a center frequency in such a manner, with selected frequency deviation and modulation frequency, which interacts with the resonance of the brushhead to produce a change of amplitude in the movement of the brushhead within a range of 5-30%.
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申请公布号 |
US2008168611(A1) |
申请公布日期 |
2008.07.17 |
申请号 |
US20040582837 |
申请日期 |
2004.12.09 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
LILLEY RONALD C.;HALL SCOTT E.;PACE JOHN W.;BRYANT WILLIAM E.;GREZ JOSEPH W. |
分类号 |
A61C17/32;A61C17/22;A61C17/34;H02P7/00;H02P25/02 |
主分类号 |
A61C17/32 |
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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