Gas scavenging exhaust system
US4265239A · kind A · utility
189Cited by
6References
9Claims
0Family size
Inventors
Key dates
| Filing date | Nov 27, 1978 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | Nov 27, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/91
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system utilizing the central vacuum system in the dental operatory to exhaust analgesic or anesthetic gas from a gas administration assembly. The system includes a nosepiece fitting over the nose of a patient, an exhaust assembly for removing exhaled gas from the nosepiece, and an exhaust chamber formed around the periphery of the nosepiece for scavenging gas leaking through the facial seal at the rim of the nosepiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.