Patents for F04B 25 - Multi-stage pumps specially adapted for elastic fluids (1,208)
06/2003
06/19/2003US20030113214 Pressure ratio modulation for a two stage oil free compressor assembly
06/12/2003WO2003048577A1 Double action pump
06/12/2003WO2003047658A1 Rotating compressor
06/12/2003US20030108435 Dual-stage, plunger-type piston compressor with minimal vibration
06/10/2003US6575079 Swash plate compressor
06/04/2003EP1315906A1 Piston compressor comprising a crankshaft whose mass is dynamically compensated, in particular for rail vehicles (detachable compensatory mass)
06/04/2003CN1421608A Rotary oblique disk type compressor
05/2003
05/28/2003CN1109864C Refrigeration system employing compressor for single or multi-stage operation with capacity control
05/15/2003US20030091447 Locomotive air compressor with an electric motor supported by an external bearing
05/15/2003US20030089123 Swash plate type compressor
05/14/2003EP1310675A2 Swash plate type compressor
05/14/2003EP1310673A1 Multistage high pressure compressor
05/07/2003CN1107802C Rotating oblique disc of oblique disc compressor
05/06/2003US6558135 Two stage oil free air compressor
05/01/2003WO2003036088A1 Motor compressor-motor alternator unit with supplementary compressed air injection operating in mono-and multi-energy
05/01/2003WO2003036087A2 Controlling kinematics of three-stroke or five-stroke heat engine piston stroke
05/01/2003US20030082058 Compression apparatus
04/2003
04/30/2003CN1414244A Oil supply equipment for opposed reciprocating compressor
04/24/2003US20030077192 Oil supplying apparatus for opposed type reciprocating compressor
04/23/2003CN1413292A Dual-stage piston-type compressor with minimal vibration
04/17/2003WO2003031817A1 High pressure pump system for supplying a cryogenic fluid from a storage tank
04/15/2003US6547534 Compression apparatus
04/02/2003CN1104563C Non-oiling piston for pump and its producing method and pump using the same piston
03/2003
03/27/2003US20030059316 Multistage type piston compressor
03/19/2003CN1103433C Intercooling system of controlling constant temperature for multistage compressor and method thereof
03/18/2003US6532859 Compressor, in particular for a vehicle air conditioning system
02/2003
02/13/2003US20030031574 Reciprocating compressor
02/12/2003EP1283364A1 Reciprocating compressor
02/06/2003WO2003010436A1 Multistage compressor for compressing gases
02/06/2003US20030026710 Reciprocating compressor
02/06/2003US20030026709 Reciprocating compressor
02/05/2003CN1100945C Connection rod of sealed compressor
12/2002
12/12/2002WO2002099280A1 Multi-stage piston-type vacuum pump and method for operating this pump
12/11/2002CN1095939C Piston connection device for sealed compressor
12/10/2002CA2042288C Reciprocating vacuum pump
12/05/2002DE10127082A1 Multiple stage piston vacuum pump has pair of pistons defining multiple pumping stages with inlet and outlet valves
11/2002
11/28/2002WO2002095227A1 Multi-stage piston-type compressor
11/28/2002WO2002095226A1 Single-step or multi-step piston compressor
11/14/2002US20020168272 Multi-stage compressor and method of manufacturing a multi-stage compressor
11/14/2002US20020168271 Multi-stage compressor and multi-stage compression process
11/13/2002CN1379181A Multi cylinder compressor
11/07/2002WO2001046585A9 Dual-stage, plunger-type piston compressor with minimal vibration
11/06/2002CN1093913C Compressor for air conditioner
10/2002
10/24/2002US20020155006 Multi-cylinder compressor
10/24/2002DE10125420C1 Multi-stage reciprocating compressor with interconnected high- and low pressure cylinders, employs plastic disc closure in non return valve
10/22/2002US6467296 Air conditioning system for vehicle
10/17/2002DE10117790A1 Kompressoranlage und Verfahren zum Betreiben einer Kompressoranlage Compressor system and method of operating a compressor system
10/16/2002EP1249603A2 Compressor system and control method therefor
10/02/2002EP1245830A2 Multi-cylinder compressor
09/2002
09/25/2002EP1242741A1 Dual-stage, plunger-type piston compressor with minimal vibration
09/25/2002EP0964999B1 Vacuum pump
09/24/2002US6453555 Method of producing compressor piston
09/24/2002US6453554 Swash plate type compressor piston wherein inner surface of base section of neck portion has as-cast surface area
09/18/2002EP1240433A1 Dry compressing vacuum pump having a gas ballast device
09/12/2002US20020127122 Compressor system for producing compressed air
09/06/2002WO2002068822A1 Dry-running piston compressor (crankshaft drive lubrication)
08/2002
08/29/2002US20020117050 Swash plate compressor
08/14/2002CN1089137C Bearing jointing structure of sealed compressor
08/13/2002US6431840 Multistage high pressure compressor
07/2002
07/30/2002US6425741 Clutchless variable-capacity type compressor
07/24/2002CN1360149A Fluid mechanism
07/16/2002US6419465 Shaft extension for use with outboard bearing designs
07/11/2002DE10109514C1 Dry-running piston compressor, for rail vehicles, has lubricating nipples for external lubrication of the big end and/or gudgeon pin bearings to give long intervals between overhauls
07/10/2002EP1220991A1 Multi-stage diaphragm-type compressor
07/09/2002US6415705 Swash plate type compressor piston whose end section is formed of a material different from that of swash-plate engaging portion
07/04/2002US20020085921 High pressure pump system for supplying a cryogenic fluid from a storage tank
07/04/2002US20020083827 Structure for supporting swash plate of variable displacement swash plate type compressor
07/02/2002US6412171 Swash plate type compressor piston wherein inner bottom surface of hollow head section has 3-dimensional configuration nonaxisymmetric with respect to its centerline
06/2002
06/26/2002EP1217211A2 Fluid machinery
06/20/2002US20020073836 Fluid machinery
06/20/2002DE10058924A1 Schwingungsarmer mehrstufiger Kolbenkompressor Low vibration of multi-stage piston compressor
06/11/2002US6402481 Variable capacity swash plate type compressor
06/06/2002WO2002044564A1 Low-vibration multi-stage piston compressor
06/05/2002EP1210518A1 Two-stage compressor with torque reducing crankshaft
05/2002
05/29/2002DE10057383A1 Ein- oder mehrstufiger Kolbenverdichter und Verfahren zur Kühlung eines elektrischen Motors für einen ein- oder mehrstufigen Kolbenverdichter Mono- or multi-stage reciprocating compressors and methods for cooling an electric motor for a one or multi-stage piston compressor
05/23/2002WO2002040867A1 Single or multiple-stage piston compressor and method for cooling an electric motor for a single or multiple-stage piston compressor
05/21/2002US6390779 Intelligent air compressor operation
05/16/2002DE19715291C2 Zweistufiger Kompressor Two-stage compressor
05/08/2002EP1203158A1 Method and compressor module for compressing a gas stream
04/2002
04/11/2002US20020040715 Gas delivery system
04/11/2002US20020040638 Swash plate compressor having variable capacity
04/04/2002US20020038555 Rotating compressor
03/2002
03/28/2002US20020037224 Compressor employing piston-ring check valves
03/28/2002DE10042216A1 Kolbenkompressor mit dynamisch massenausgeglichener Kurbelwelle, insbesondere für Schienenfahrzeuge (lösbare Ausgleichsmasse) Piston compressor with dynamically balanced crankshaft mass, especially for rail vehicles (removable mass balance)
03/27/2002CN1081742C Single headed swash plate type compressor
03/14/2002DE10042214A1 Kolbenkompressor mit einem dynamischen Massenausgleich im Bereich der Kurbeltriebe, insbesondere für Schienenfahrzeuge (Ausgleichspleuel) Piston compressor with a dynamic mass balance in the crank mechanisms, particularly for rail vehicles (Ausgleichspleuel)
03/14/2002DE10042212A1 Piston air compressor for vehicles, in particular, rail vehicles comprises a dry-running compressor unit with opposing cylinders whose axes are parallel or slightly inclined to the vehicle floor
03/13/2002CN1340131A Compressor system for producing compressed air
03/07/2002WO2002018788A1 Piston compressor having a dynamic mass compensation in the region of the crank mechanism
03/07/2002WO2002018787A1 Piston compressor comprising a crankshaft whose mass is dynamically compensated, in particular for rail vehicles (detachable compensatory mass)
03/05/2002US6352415 variable capacity hydraulic pump
02/2002
02/20/2002CN1336488A Reciprocating motion type compressor
02/06/2002EP1177382A1 Piston vacuum pump
02/06/2002CN1334903A Low pressure ratio piston compressor
01/2002
01/31/2002US20020012592 Reciprocating compressor
01/30/2002EP1176309A2 Reciprocating compressor
01/08/2002US6337141 Swash-plate of swash-plate type compressor
12/2001
12/11/2001US6329077 Plate-shaped compression mold, process for producing the same and process for making laminate therewith
12/11/2001US6328536 Reciprocating low pressure ratio compressor
12/04/2001CA2202818C Thermostatically controlled intercooler system for a multiple stage compressor and method
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