Fluid-dispensing and refilling system for a power toothbrush
US6220772A · kind A · utility
59Cited by
27References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Sep 24, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/36
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pump used in a power toothbrush for fluid delivery to the bristles. The pump moves fluid provided to it to a dispensing valve located in the brushhead. The pump includes a pump chamber with a piston ball located therein. The piston ball moves within the chamber in response to movement of the brushhead, moving fluid out a discharge end of the pump chamber under pressure. The pump includes a fluid exit channel which connects the discharge end of the pump chamber with an opening in the brushhead in which the dispensing valve is located.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.