Device for generating a jet stream of air entrained water
US6837708B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Aug 2, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/0092
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for generating a jet stream of air entrained water for cleaning teeth and gums, includes two pumps disposed to respectively and sequentially pump in and out of internal ports thereof from first water and air transit chambers, water flow and air stream to generate raised water and air pressures. Two valves are disposed respectively to be moved by the water and air pressures to block or permit entry of the water flow and the air stream into second water and air transit chambers. A mixing outlet is disposed downstream of and to merge water and air outlet ports of the second water and air transit chambers to obtain an accelerated stream of the air entrained water for cleaning teeth and gums.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.