| Patents for F04B 9 - Piston machines or pumps characterised by the driving or driven means to or from their working members (9,236) |
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| 08/05/2004 | US20040151594 High pressure reciprocating pump and control of the same |
| 08/05/2004 | US20040149649 Faster operation; thicker filter cakes; slurry organic type sludge with high bacteria levels; reduced maintenance |
| 08/05/2004 | US20040148932 Engine exhaust system pneumatic pump |
| 08/04/2004 | EP1042615B1 Fluid-actuated working device |
| 08/04/2004 | CN1517548A Powder pump device and its using method and powder coating device |
| 08/04/2004 | CN1517547A 往复泵和真空泵 Reciprocating pumps and vacuum pumps |
| 08/03/2004 | US6769884 Hydraulic drive system for piston pumps |
| 08/03/2004 | US6769632 Method and apparatus for supplying coating material |
| 08/03/2004 | US6769351 Radial piston pump |
| 07/29/2004 | US20040146407 Micropump |
| 07/28/2004 | EP1194691B1 Piston pump, method and installation for filtering water |
| 07/28/2004 | EP1068449B1 Pump unit for a slip-regulated hydraulic automobile brake system |
| 07/28/2004 | CN2628748Y Refueling device for closed positive pressing system |
| 07/28/2004 | CN1516783A Liquid dispensing device |
| 07/28/2004 | CN1159526C Double-acting four-plunger hydraulic pump or motor |
| 07/28/2004 | CN1159525C Mixed flow fan vane for air-cooled compressor |
| 07/28/2004 | CN1159524C Double-cylinder water-lifting machine |
| 07/22/2004 | DE10300774A1 Radial piston pump has thrust bearing installed between end face of shaft journal and base, with outer race of radial bearing constructed as closed needle bush formed in non-cutting process with base |
| 07/22/2004 | DE10300280A1 Pumpeneinrichtung für Pulver, Verfahren hierfür und Pulverbeschichtungseinrichtung Pump means for powder, powder coating equipment and method therefor |
| 07/22/2004 | DE10222228A9 Mikropumpe mit Heizelementen für einen pulsierten Betrieb Micropump with heating elements for a pulsed operation |
| 07/22/2004 | DE10025188B4 Druckerhöhungsanlage Pressure Booster System |
| 07/21/2004 | EP1438505A2 Pump element and piston pump for generating high fuel pressure |
| 07/21/2004 | EP1029186B1 A valve arrangememt |
| 07/21/2004 | CN2627238Y Hand-operated high-pressure wellhead |
| 07/21/2004 | CN2627237Y Piston type hydraulic pump |
| 07/20/2004 | CA2370623C Method and apparatus for infusing liquids using a chemical reaction in an implanted infusion device |
| 07/20/2004 | CA2268032C Fluid pump dispenser |
| 07/15/2004 | WO2004035228A3 Paste ejection apparatus |
| 07/15/2004 | US20040136833 High pressure reciprocating pump and control of the same |
| 07/15/2004 | US20040136832 Fluid powered additive injection system |
| 07/15/2004 | US20040134996 Droplets forming method and device for discharging constant-volume droplets |
| 07/14/2004 | EP1437509A2 High pressure reciprocating pump and control of the same |
| 07/14/2004 | EP1437506A1 PISTON TYPE GAS COMPRESSOR, AND PISTON TYPE GAS PRESSURE DRIVE ROTATION DEVICE |
| 07/14/2004 | EP1437178A2 Powder pumping installation, Method therefore and powder coating installation |
| 07/14/2004 | EP1436508A1 Electronic control system and process for electromagnetic pump |
| 07/14/2004 | CN2625599Y Vertical manual hydraulic pump |
| 07/08/2004 | WO2004056710A1 Animal powered mechanical device for water desalination |
| 07/08/2004 | US20040131482 Rowing bilge pump |
| 07/08/2004 | US20040131472 Reciprocating pump and vacuum pump |
| 07/08/2004 | US20040130158 System and method for electrical power generation utilizing vehicle traffic on roadways |
| 07/08/2004 | US20040129734 Accurate dosing pump and accessories therefor |
| 07/08/2004 | CA2453866A1 Method and system for pumping powder, and powder coating apparatus |
| 07/07/2004 | EP1435459A2 Reciprocating pump and vacuum pump |
| 07/07/2004 | CN2623910Y Water recovery apparatus for plunger pump |
| 07/07/2004 | CN2623907Y Reciprocating twin diaphragm pump |
| 07/07/2004 | CN1511221A Central lubricating unit |
| 07/06/2004 | CA2353053C Marine steering system having dual hydraulic and electronic output |
| 07/01/2004 | CA2509805A1 Gas pressure driven fluid pump having compression spring pivot mechanism and damping system |
| 06/30/2004 | CN2622422Y Multi-purpose liquid pumping valve |
| 06/30/2004 | CN2622421Y Driving device for ac air compressor |
| 06/24/2004 | US20040118274 Additive injection device |
| 06/23/2004 | CA2453999A1 Additive injection device |
| 06/22/2004 | US6753665 Linear compressor drive device |
| 06/22/2004 | US6752601 Micropump |
| 06/22/2004 | US6752067 Airless spray pump |
| 06/17/2004 | WO2004051085A1 Hydraulic machine |
| 06/17/2004 | US20040115070 Pressure intensifier |
| 06/17/2004 | US20040115069 Air actuated hydraulic pump |
| 06/17/2004 | DE10039548B4 Antriebsvorrichtung, insbesondere für Dosiervorrichtungen Drive device, in particular for metering |
| 06/16/2004 | EP1427471A2 Plunger for patient infusion device |
| 06/16/2004 | EP1175371A4 Actuator element |
| 06/16/2004 | CN2620775Y High pressure flushing pump |
| 06/16/2004 | CN1153903C Fuel oil pump for diesel engine |
| 06/15/2004 | US6749408 Piston pump |
| 06/15/2004 | CA2299486C 1 1/2 piston force pump |
| 06/10/2004 | WO2003102395A3 Power pistons |
| 06/09/2004 | EP1227855B1 Plunger plug with stiffening insert |
| 06/09/2004 | EP1204460B1 Method and device for desalting water |
| 06/09/2004 | CN1502813A 隔膜泵 Diaphragm |
| 06/08/2004 | US6745667 Motor-pump aggregate |
| 06/02/2004 | CN2619067Y Pneumatic slurry pump |
| 06/02/2004 | CN1502012A Hand operated pump for ejaculating small amount |
| 06/01/2004 | CA2379645C Reciprocable piston with a fluid scavenging system and method of scavenging a fluid |
| 06/01/2004 | CA2241236C Dispensing pump having universal pump body and readily attachable shroud |
| 05/27/2004 | WO2004043610A1 Pump unit and container |
| 05/27/2004 | US20040101424 Light-weighed diaphragm pump |
| 05/27/2004 | US20040101422 Vibrating pumping stage for molecular vacuum pumps, and molecular vacuum pump with vibrating pumping stages |
| 05/26/2004 | EP1421278A1 Pumping arrangement |
| 05/26/2004 | CN2617954Y Chemical double component injecting pump |
| 05/26/2004 | CN1499993A Filter press type dewatering system, dewatering method, dewater, check valve, and opening/closing valve |
| 05/25/2004 | CA2131192C Hydraulic oil well pump drive system |
| 05/21/2004 | WO2004041418A1 Method and device for desalinating water while overcoming decreases in pressure |
| 05/21/2004 | WO2004041022A1 Sealing structure of an up-down type piston assembly for exhausting a content |
| 05/20/2004 | US20040096344 Simplified piston slidable in a cylinder |
| 05/20/2004 | US20040096343 Oilless air motor assembly for hydraulic pumps |
| 05/19/2004 | EP1420167A2 Device for circulating sealing gas for mechanical dry seals of a centrifugal compressor |
| 05/19/2004 | EP1420164A2 Simplified piston slidable in a cylinder |
| 05/19/2004 | DE10251342A1 Reverse osmosis seawater desalination membrane module maintains a continuous flow of salt water over the membrane drawn from reservoir |
| 05/19/2004 | DE10249524A1 Fluid-Versorgungseinheit, insbesondere hydraulische Versorgungseinheit Fluid supply unit, especially hydraulic power unit |
| 05/19/2004 | DE10249523A1 Pressure intensifier esp. for hydraulic fluids has high pressure piston to separate drive fluid and pump fluid, with connection between control lines located within movement stroke of high pressure piston |
| 05/19/2004 | CN2616704Y Double end face sealing hydraulic servo pump for stirring shaft of pressure kettle |
| 05/19/2004 | CN2616703Y Pneumatic grease pump |
| 05/19/2004 | CN1498136A Droplets forming method and device for discharging constant-volume droplets |
| 05/18/2004 | US6736966 Electrolytic cell for generating at least one oxidant, electrolyte reservoir, power source, activator for activating power source |
| 05/18/2004 | US6736612 Pump |
| 05/18/2004 | US6736611 Aircraft fluid delivery device |
| 05/18/2004 | US6736046 Pilot control valve utilizing multiple offset slide valves |
| 05/13/2004 | US20040092878 Plunger for patient infusion device |
| 05/13/2004 | US20040092873 External infusion device with a vented housing |
| 05/13/2004 | US20040092789 Pump driving unit for driving a pump used for supporting or substitution of cardiac function |