One-way valve
US4949756A · kind A · utility
37Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7882
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A one-way valve comprising flat resilient members in face-to-face relationship which are bonded upon two generally parallel tracks defining a passageway therebetween, where the tracks have a tortuous profile along their inner edges, and optionally, where the passageway is creased and/or wetted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.