Patents in subclass Pumps/Alternate Pumping From Plural Pumping Chambers
Parent class: Pumps
| Number | Patent title | Issue Date |
|---|---|---|
| 07007456 | Dual chamber pump and method Disclosed is a pneumatically powered high-pressure and lightweight fluid pump. The pump is useful for pumping fuel for liquid rocket engines and for pumping water, such as for fire suppression. During operation of the pump, liquid is... |
03/07/2006 |
| 06810961 | Fluid well pumping system A fluid well pumping system includes at least one stage for removing fluid from a well. The at least one stage includes a product line assembly adapted for positioning in the well casing as a unit. The product line assembly includes a... |
11/02/2004 |
| 06537032 | Load dependent variable speed hydraulic unit There is provided an autonomous inverter-driven hydraulic unit in which a command pressure and command flow rate do not need to be inputted from outside and a pressure and flow rate can be autonomously controlled without requiring any... |
03/25/2003 |
| 06435838 | Fluid well pump A fluid pumping system includes a number of stages. Each stage has a fluid chamber having a top end with an air aperture and a bottom end with a fluid apertures. An air line is connected to the air aperture, and a fluid input conduit,... |
08/20/2002 |
| 6036446 | Fluid transfer with concurrent system movement for liquid and vacuum A portable system of inter-connected smaller and larger canisters for near simultaneous vacuum and liquid transfer free from any external power. Captured vacuum in the canisters is employed for waste liquid extraction and a subsequent... |
03/14/2000 |