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%. |
申请公布号 |
CA2549461(C) |
申请公布日期 |
2013.02.05 |
申请号 |
CA20042549461 |
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;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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