| Patents for F04B 25 - Multi-stage pumps specially adapted for elastic fluids (1,208) |
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| 02/23/1999 | US5873705 Tire pump |
| 02/17/1999 | CN2307925Y Structure of multifunction air compressor |
| 01/26/1999 | US5863186 Method for compressing gases using a multi-stage hydraulically-driven compressor |
| 01/13/1999 | EP0823021A4 High pressure gas compressor |
| 12/16/1998 | CN1201869A 自动车用空压机 Auto Car Air Compressor |
| 11/26/1998 | WO1998053203A1 Compressor |
| 11/25/1998 | CN1199826A Non-oiling piston for pump. its producing method and pump using the same piston |
| 10/15/1998 | DE19715291A1 Two-stage compressor |
| 09/15/1998 | US5807078 Hand air pumps |
| 09/11/1998 | WO1998039570A1 Vacuum pump |
| 09/10/1998 | DE19709206A1 Vakuumpumpe Vacuum pump |
| 08/25/1998 | CA2000152C Evacuation apparatus |
| 07/28/1998 | US5784950 Single headed swash plate type compressor having a piston with an oil communication hole on a side of the piston remote from the cylinder bore and crank chamber |
| 07/22/1998 | CN1188219A Refrigeration system employing compressor for single or multi-stage operation with capacity control |
| 07/21/1998 | US5782612 Hydraulic gas compressor |
| 07/14/1998 | US5779455 Device for guiding and centering a machine component |
| 07/08/1998 | CN1186913A Compressor for use in refrigeration system |
| 07/01/1998 | CN1186172A Connection rod of hermetically sealed compressor |
| 06/23/1998 | US5769610 High pressure compressor with internal, cooled compression |
| 06/23/1998 | US5768901 Refrigerating system employing a compressor for single or multi-stage operation with capacity control |
| 06/18/1998 | DE19756031A1 Multistage vehicle conditioning coolant compressor |
| 06/03/1998 | EP0845642A2 A refrigeration system employing a compressor for single or multi-stage operation with capacity control |
| 05/20/1998 | EP0739449B1 Device for guiding and centring a machine component |
| 04/15/1998 | EP0836004A2 A compressor |
| 03/18/1998 | EP0829691A1 Process for compressing the feed gas of a separation unit for gas mixtures |
| 03/13/1998 | CA2215467A1 Process for compressing a gas associated with a unit for separating a gas mixture |
| 03/05/1998 | WO1998009079A1 Inlet valve with a choke effect and multi-stage piston vacuum pump |
| 03/05/1998 | WO1998009077A1 Vacuum piston pump with an inlet and an outlet |
| 03/05/1998 | DE19634519A1 Kolbenvakuumpumpe mit Eintritt und Austritt Vacuum pump with the inlet and outlet |
| 02/17/1998 | US5718566 Drive shaft lubrication arrangement for a swash plate type refrigerant compressor |
| 02/11/1998 | EP0823021A1 High pressure gas compressor |
| 02/11/1998 | CN1172933A Thermostatically controlled intercooler system for multiple stage compressor and method |
| 02/10/1998 | US5716197 High pressure compressor with internal, inter-stage cooled compression having multiple inlets |
| 02/04/1998 | CN1172213A Single headed swash plate type compressor |
| 12/29/1997 | EP0814260A2 Thermostatically controlled intercooler system for a multiple stage compressor and method |
| 11/12/1997 | CN2267337Y Cylinder used for |
| 11/06/1997 | DE19712348A1 Oscillating plate compressor for vehicle air conditioning plant |
| 11/05/1997 | EP0804684A1 Compressor |
| 10/08/1997 | EP0715689B1 Hydraulic gas compressor |
| 10/07/1997 | US5674053 High pressure compressor with controlled cooling during the compression phase |
| 09/10/1997 | CN2262111Y V型空气压缩机 V-type air compressor |
| 09/03/1997 | EP0793019A2 Improvements in vacuum pumps |
| 08/19/1997 | US5658134 Compressor with suction valve in piston |
| 05/27/1997 | US5632605 Multistage vacuum pump |
| 04/16/1997 | CN1034601C Gas Compressors |
| 04/03/1997 | DE19536491A1 Electrically-operated gas or fluid feed valveless pump |
| 03/25/1997 | US5613837 Air compressor inlet and outlet valve arrangement |
| 03/04/1997 | CA2036212C Wobble plate type refrigerant compressor having a ball-and-socket joint lubricating mechanism |
| 02/26/1997 | CN1034136C Slant plate type compressor with variable displacement mechanism |
| 02/11/1997 | US5600961 Refrigeration system with dual cylinder compressor |
| 12/25/1996 | CN1138889A Device for guiding and centering a machine component |
| 12/17/1996 | US5584669 Two-stage positive displacement pump |
| 11/26/1996 | US5577390 Compressor for single or multi-stage operation |
| 11/20/1996 | EP0743451A1 Cryogenic pump |
| 11/19/1996 | US5575626 Cryogenic pump |
| 10/31/1996 | WO1996034199A1 High pressure gas compressor |
| 10/30/1996 | EP0739449A1 Device for guiding and centring a machine component |
| 09/11/1996 | EP0731274A2 Multistage vacuum pump |
| 09/11/1996 | CN1130722A Compressor for single or multi-stage operation |
| 07/25/1996 | WO1996022464A1 Compressor |
| 07/24/1996 | CN1032384C Slant plate type compressor with variable capacity control mechanism |
| 07/18/1996 | DE19501220A1 Verdichter Compressor |
| 06/12/1996 | EP0715689A1 Hydraulic gas compressor |
| 06/11/1996 | US5525044 High pressure gas compressor |
| 06/11/1996 | CA2086855C Compressor device for controlling oil level in two-stage high dome compressor |
| 06/05/1996 | EP0715077A2 Compressor for single or multi-stage operation |
| 05/23/1996 | WO1996015367A1 Device for guiding and centring a machine component |
| 05/23/1996 | CA2181183A1 Device for guiding and centring a machine component |
| 04/10/1996 | EP0613527B1 Piston machine for use as a compressor or motor |
| 03/27/1996 | CN2223365Y Air heat pump |
| 01/16/1996 | US5483867 Swash plate compressor with sufficiently lubricated shoes |
| 01/09/1996 | US5482443 Multistage vacuum pump |
| 01/02/1996 | US5479846 Machine for exchanging energy |
| 10/05/1995 | DE4411336A1 Feeding and/or sealing device for liquids and gases |
| 10/04/1995 | CN2209221Y Multipurpose hydrogen compressor |
| 09/20/1995 | CN1029795C Compressor assembly |
| 08/16/1995 | CN2205453Y Compressor of nitrogen-hydrogen gas |
| 07/05/1995 | CN2202804Y Nitrogen hydrogen compressor |
| 06/14/1995 | CN2200707Y Symmetrical balance miniature non-oil air compressor |
| 05/17/1995 | CN1028443C Air compressor for vehicle |
| 04/06/1995 | DE4434782A1 Swash-plate compressor with improved sliding-shoe lubrication |
| 03/28/1995 | US5400751 Monoblock internal combustion engine with air compressor components |
| 03/02/1995 | WO1995006204A1 Hydraulic gas compressor |
| 03/02/1995 | CA2165063A1 Hydraulic gas compressor |
| 02/08/1995 | CN1098477A Electrically driven hermetic compressor |
| 02/07/1995 | US5387090 Two-stage positive displacement pump |
| 01/31/1995 | US5385449 Compressor arrangement |
| 11/30/1994 | EP0626516A1 Two stage positive displacement pump |
| 10/19/1994 | CN2179916Y Piston-type compressor |
| 09/20/1994 | CA2031034C Self lubricating, two stage variable compressor |
| 09/13/1994 | CA2011816C Cryogas pump |
| 08/16/1994 | CA1331455C Wobble plate type compressor with variable displacement mechanism |
| 07/27/1994 | EP0607687A2 Multistage vacuum pump |
| 07/13/1994 | CN2171699Y Single-axle isothermic type middle chassis of centrifugal compressor |
| 04/20/1994 | CN1024292C Refrigerant compressor |
| 03/10/1994 | DE4229969A1 Hydropneumatic actuating system lifting lorry axle - is housed in axle tube with pump coupled to wheel hub |
| 01/26/1994 | CN1081235A Slant plate type refrigerant compressor with variable displacement mechanism |
| 01/25/1994 | US5280745 Radial-pluger-type apparatus with variable plunger stroke |
| 01/11/1994 | US5277561 For conveying a fluid |
| 12/29/1993 | EP0576133A1 Gas compressors |