One-way valve
US4966197A · kind A · utility
22Cited by
4References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Apr 6, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7882
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.