Resonance tuning of the bristle structure for a power toothbrush
US10667891B2 · kind B2 · utility
1Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2015 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Feb 25, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A brushhead assembly (10) for a power toothbrush (1), which includes a bristle plate (12) and a set of bristles (14) mounted to the bristle plate (12). The set of bristles (14) is characterized such that some or all of the bristles have a dipole whip motion during operation at a selected drive frequency, including arrangements where the bristles in a first portion (32) have a different motion than the bristles at a at least a second portion (34) of the brushhead assembly (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.