Disposable pneumotachograph flowmeter
US5357972A · kind A · utility
54Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | May 17, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/087
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A disposable pneumotachograph flowmeter comprises first and second tubular mouthpiece members which, when juxtaposed relative to one another, sandwich a fabric screen made from a hydrophobic material therebetween. The screen may comprise a woven fabric formed from expanded PTFE fibers or, alternatively, may be a non-woven mat of polyester fibers. Because of the properties of the screen material, it does not become clogged and occluded with moisture particles during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.