Eccentric vibration structure of electrical toothbrush
US11622842B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Mar 20, 2020 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Feb 25, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/3481
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An eccentric vibration structure of electrical toothbrush includes an eccentric rod. Two ends of the eccentric rod are respectively formed with a transmission section and a weight section. The transmission section is drivable by a driving force to rotate so as to drive the weight section to eccentrically vibrate. The weight section has at least one weight part for partially or totally increasing the weight of the weight section, whereby due to the increased weight, the weight section is unbalanced in weight to deflect from a central axis of the eccentric rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.