Coupler with check valve for a dental ejector hose
US5725374A · kind A · utility
26Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1996 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Mar 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S604/902
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A coupler is adapted for inserted engagement with a dental ejector valve and serves to couple a vacuum hose to the valve. A passageway in the coupler is closed by a flexible disk which flexes open in response to a vacuum inducted ejector system flow from a source. The disk is confined in place across the passageway by a retainer which biases the disk into engagement with a valve seat surface. The flexible disk blocks any reverse flow through the coupler as when a reduced pressure occurs from interaction of the patient's mouth with a saliva ejector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.