Diaphragm pump having multiple rigid layers with inlet and outlet check valves
US5902096A · kind A · utility
44Cited by
34References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S417/01
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integral valve diaphragm pump has a first rigid layer, a second rigid layer and a flexible membrane therebetween. Concave surfaces in the two rigid layers form a pump. The pump includes an actuating chamber which is alternately connected to a source of pressure and a source of vacuum. A pump chamber is connected to a fluid source and a fluid receiver through a filling check valve and a dispensing check valve, respectively. Duckbill and spring loaded ball check valves are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.