Breathing apparatus mouthpiece
US5127398A · kind A · utility
46Cited by
10References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1989 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64G6/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A breathing apparatus mouthpiece which is reversibly switchable between an open circuit and a closed circuit system by rotating a special valve in the mouthpiece. The breathing apparatus mouthpiece is compact, lightweight, easy to operate and has low breathing resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.