Pumping device having inlet and outlet valves adjacent opposed sides of a tube deforming device
US5151019A · kind A · utility
110Cited by
17References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1989 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Nov 2, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B7/0275
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pumping device controlling an amount of liquid passing through a length of tubing accommodated in the pumping device. The pumping device includes inlet and outlet valves located adjacent opposed sides of a tube deforming device. The valves are controllable for restricting the flow of liquid through the tubing, and the deforming device is such that the tubing is first deformed in one direction and then in another direction which tends to restore the original cross-sectional shape of the tubing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.