| Patents for F04B 35 - Piston pumpsspecially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for (9,373) |
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| 12/21/1999 | US6004115 Hermetic compressor for refrigeration systems |
| 12/15/1999 | CN2353930Y Four-liquid clutching speed-adjustable high-pressure mud injecting pump |
| 12/09/1999 | DE19825414A1 Oil feed device for linear compressor |
| 12/08/1999 | CN1238028A Gas compressor |
| 12/07/1999 | US5996367 Heat pump and air conditioning system compressor unloading method and apparatus |
| 12/02/1999 | DE19921293A1 Oil supply unit for linear compressor |
| 11/30/1999 | US5993178 Linear compressor |
| 11/30/1999 | US5993175 Oil supply apparatus for friction portion of linear compressor |
| 11/30/1999 | US5993170 Apparatus and method for compressing high purity gas |
| 11/25/1999 | DE19922511A1 Linear oil-powered compressor plant in airtight container |
| 11/24/1999 | CN1046789C Cooling supply apparatus for linear compressor |
| 11/23/1999 | US5988994 Angularly oscillating, variable displacement compressor |
| 11/17/1999 | CN2349378Y Structure improved air compressor |
| 11/16/1999 | US5983780 Multiple piston swash plate type of compressor including different dead volumes of the cylinder bores by the use of different length pistons |
| 11/09/1999 | US5980217 Portable compressor having support leg with flexible joint |
| 11/09/1999 | US5980211 Circuit arrangement for driving a reciprocating piston in a cylinder of a linear compressor for generating compressed gas with a linear motor |
| 11/03/1999 | CN2346954Y Electronic inflator |
| 11/02/1999 | US5975861 Pumping assembly for use in ventilated footwear |
| 11/02/1999 | US5975860 Vibration torsion system damper for a shaft of a compressor |
| 10/27/1999 | EP0952347A1 Piston stroke control circuit for an oscillating compressor |
| 10/27/1999 | CN1232926A Improved structure of linear compressor |
| 10/26/1999 | US5971722 Electrochemical syringe pump having a sealed storage reservoir for a charge transfer medium |
| 10/26/1999 | US5971721 High pressure pump having an eccentric transmission |
| 10/20/1999 | EP0819333B1 Linear motor compressor and its application in cooling system |
| 10/19/1999 | CA2153428C Rotor counterweight insert apparatus and method for making same |
| 10/12/1999 | US5964510 Pump unit and brake control device using same |
| 10/07/1999 | WO1999050558A1 High pressure pump system |
| 10/07/1999 | CA2288228A1 High pressure pump system |
| 10/06/1999 | CN2342130Y One-throw even cylinder radial opposed reciprocating machine |
| 09/30/1999 | WO1999049218A1 Discharge silencer provided with drain recovering function |
| 09/28/1999 | US5957671 Refrigerant compressor with an electric motor having an insulation film |
| 09/28/1999 | US5957667 Oilless compressor with a pressurizable crankcase and motor containment vessel |
| 09/22/1999 | CN2339782Y Three-cylinder single-action hydraulic driven reciprocating plunger pump |
| 09/16/1999 | WO1999046505A1 Refrigeration compressor with improved stator support |
| 09/15/1999 | EP0942170A1 Gas compressor |
| 09/15/1999 | CN2338507Y Electric inflating apparatus |
| 09/08/1999 | EP0940580A2 Transportable air compressor |
| 09/07/1999 | US5947708 Axial flow valve system for linear compressor |
| 09/07/1999 | US5947696 To maintain inflation air within a pneumatic tire mounted on a vehicle wheel |
| 09/07/1999 | US5947693 Linear compressor control circuit to control frequency based on the piston position of the linear compressor |
| 09/07/1999 | US5947248 Electric fan clutch |
| 09/01/1999 | CN2336109Y Electromagnetic fluid accelerator |
| 08/31/1999 | US5945748 Linear motor structure for linear compressor |
| 08/31/1999 | US5944302 Linear compressor including reciprocating piston and machined double-helix piston spring |
| 08/25/1999 | CN2334903Y High-speed pressure-boosting pump |
| 08/24/1999 | US5941692 Tuned resonant oscillating mass inflation pump and method of extracting electrical energy therefrom |
| 08/19/1999 | WO1999041501A1 Low noise high performance vacuum pump |
| 08/18/1999 | EP0936422A2 Apparatus having refrigeration cycle |
| 08/18/1999 | CN1226307A Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method |
| 08/11/1999 | EP0839280B1 Piston compressor of the horizontal type |
| 08/10/1999 | US5934882 Electrical generator system having a tuned resonant oscillating mass |
| 08/05/1999 | WO1999039425A1 Hermetically encapsulated compressor |
| 08/04/1999 | CN2331772Y All-pneumatic water pump |
| 08/04/1999 | CN2331771Y Vapour-pressure type reciprocating pump |
| 08/03/1999 | US5931207 Portable home and garden sprayer, power unit |
| 07/27/1999 | US5927089 Air conditioner for a motor vehicle |
| 07/22/1999 | DE19900886A1 Structure for connecting silencer of linear compressor |
| 07/21/1999 | CN1223342A Structure for coupling muffler for linear compressor |
| 07/15/1999 | WO1999035400A1 Intensifier apparatus and method for supplying high pressure gaseous fuel to an internal combustion engine |
| 07/15/1999 | WO1999035398A1 The crankshaft driven air compressor |
| 07/15/1999 | CA2316927A1 Intensifier apparatus and method for supplying high pressure gaseous fuel to an internal combustion engine |
| 07/13/1999 | US5921755 Dry vacuum pump |
| 07/08/1999 | DE19847917A1 Piston for pump or compressor with adjustable delivery volume |
| 07/07/1999 | CN1221857A Discharge valve system for linear compressor |
| 07/01/1999 | WO1999012593A3 Electrochemical syringe pump |
| 07/01/1999 | DE19860726A1 Linear compressor |
| 06/30/1999 | CN1221244A Stator of linear compressor |
| 06/16/1999 | EP0922875A2 Torque limiting transmission |
| 06/16/1999 | EP0922874A1 Torque limiting apparatus |
| 06/02/1999 | EP0919723A2 Torsional vibration attenuating structure in compressor |
| 05/25/1999 | US5907201 Displacer assembly for Stirling cycle system |
| 05/19/1999 | EP0916863A1 Power transmission mechanism suitable for use in a compressor |
| 05/18/1999 | US5905233 Noise suppressor for displacement compressors |
| 05/12/1999 | DE19749729A1 Piston vacuum pump |
| 04/28/1999 | EP0910743A1 Linear compressor motor |
| 04/27/1999 | US5897296 Vibrating compressor |
| 04/21/1999 | EP0909896A2 Oscillating compressor |
| 04/21/1999 | EP0909895A2 Vibrating compressor |
| 04/21/1999 | EP0783631B1 A motor-driven compressor with reduced lateral dimensions |
| 04/21/1999 | CN1214414A Improved structure of vibrating compressor |
| 04/21/1999 | CN1214413A Oscillation-type compressor |
| 04/15/1999 | WO1999018649A1 Linear motor compressor |
| 04/07/1999 | CN2313074Y Micro air-compressor |
| 04/06/1999 | US5890878 Valve structure in compressor |
| 04/06/1999 | CA2128368C Bearing structure used in a compressor |
| 04/01/1999 | DE19810881A1 High pressure washer |
| 03/31/1999 | EP0905400A2 Power transmission mechanism having a ring rubber compressed between an outer pulley and an inner hub |
| 03/31/1999 | EP0904856A2 High pressure cleaner with removable handle |
| 03/23/1999 | US5884727 Hermetic compressor with start-up lubrication |
| 03/18/1999 | WO1999012593A2 Electrochemical syringe pump |
| 03/17/1999 | EP0902205A2 Power transmission system readily capable of properly setting a preselected torque at which power transmission is to be interrupted |
| 03/10/1999 | EP0701659B1 Centrifugal oil pump for a variable speed hermetic compressor |
| 03/04/1999 | WO1999010972A1 Magnetic clutch system for cooling fan drive |
| 03/04/1999 | WO1999010687A1 Synchronous twin reciprocating piston apparatus |
| 03/04/1999 | CA2302238A1 Magnetic clutch system for cooling fan drive |
| 03/03/1999 | EP0899858A1 Magnetic clutch system for cooling fan drive |
| 03/03/1999 | EP0736233B1 Electric motor for a drive, especially for a pump |
| 03/03/1999 | CN1209508A Reciprocating compressor |
| 02/24/1999 | EP0897476A1 Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method |
| 02/24/1999 | CN1209193A Inverter-controlled sealed compressor |