| Patents for F04B 49 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups (22,036) |
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| 01/05/1995 | WO1995000251A1 High pressure spraying device |
| 01/05/1995 | DE4321013A1 Gas compressor |
| 01/04/1995 | EP0632355A2 Discharge flow control system and method in hydraulic pump |
| 01/04/1995 | EP0502095B1 Method and apparatus for controlling a fluid compression system |
| 01/04/1995 | CN1097045A Numerically controlled oil pumping machine used with derrick |
| 01/04/1995 | CN1027308C Valve unloader finger assembly, method of forming same, kit and plate thereof |
| 01/03/1995 | US5378127 Manual displacement control for hydrostatic transmissions and method of precise symmetry adjustment therefore |
| 01/03/1995 | US5378118 Cartridge assembly with orifice providing pressure differential |
| 01/03/1995 | US5378117 Valve unloading means, and a valve unloading actuator therefor |
| 01/03/1995 | US5378116 Over-pressure relief means |
| 01/03/1995 | US5378112 Positive displacement, variable delivery pumping apparatus |
| 01/03/1995 | US5377714 Device and method for transferring a multiphase type effluent in a single pipe |
| 01/03/1995 | US5377559 Radial piston fluid machine and/or adjustable rotor |
| 12/28/1994 | EP0631054A2 Pressure washer bypass valve |
| 12/28/1994 | EP0630445A1 Compressor slide valve control |
| 12/28/1994 | CN2186317Y No-contact pressure control protector of miniature air compressor |
| 12/27/1994 | US5375650 Liquid coolant circulation control system for immersion cooling systems |
| 12/22/1994 | WO1994029595A1 Multi-stage regulator for lubricant pumps with continuously variable feed rate |
| 12/21/1994 | EP0629778A2 Regulating device for screw-type compressors |
| 12/21/1994 | CN1027095C Scroll type compressor |
| 12/20/1994 | US5374167 Feed pump for a hydraulic system |
| 12/17/1994 | CA2121763A1 Regulating device with starting and stopping device for screw-type compressors, and starting and stopping device used hereby |
| 12/15/1994 | DE4335403C1 Hydraulic device |
| 12/15/1994 | CA2123950A1 Pressure washer bypass valve |
| 12/14/1994 | EP0628726A2 Variable delivery vane pump |
| 12/14/1994 | EP0628722A1 Swash plate type compressor |
| 12/14/1994 | EP0471688B1 An electronic control for monitoring status of a compressor |
| 12/14/1994 | CN1027006C Valve for a hermetic refrigeration compressor |
| 12/13/1994 | US5372482 Detection of rod pump fillage from motor power |
| 12/13/1994 | CA2080877C Pressure ratio responsive unloader |
| 12/13/1994 | CA2080604C Method for controlling the rotational speed of a motor-compressor used in an air conditioner |
| 12/13/1994 | CA2000534C Body support system |
| 12/08/1994 | WO1994028317A1 Method of preventing cavitation in an axial piston pump during an aiding load and system and valve employing the same |
| 12/08/1994 | WO1994028310A1 Motor controlled constant flow pump |
| 12/08/1994 | WO1994028309A1 Innovative pumping system for peristaltic pumps |
| 12/07/1994 | EP0626892A1 Pump apparatus for pumping melt metal |
| 12/07/1994 | EP0620940A4 Infusion pump configuration scheme using eeproms. |
| 11/30/1994 | CN2184105Y Portable aerator for automobile tyre |
| 11/29/1994 | US5368061 Load sensed variable discharge fixed displacement pump control with low unload features |
| 11/29/1994 | US5368019 System and method for operating a respirator compressor system under low voltage conditions |
| 11/29/1994 | CA2124552A1 Method of operating a hydraulic load sensing system |
| 11/29/1994 | CA1333275C Differential pressure sensor in a capacity control valve for a compressor |
| 11/24/1994 | WO1994027046A1 Vacuum pump |
| 11/24/1994 | WO1994020753A3 Cyclic hydraulic pump |
| 11/24/1994 | DE4323574C1 Hydraulic tool |
| 11/23/1994 | CN2183459Y Automatic controlling device for oil and water extraction pump |
| 11/22/1994 | US5367235 Power steering device having electrically driven pump |
| 11/22/1994 | US5366351 Pump with failure responsive discharge valve |
| 11/17/1994 | DE4316361A1 Hydraulic industrial truck |
| 11/15/1994 | US5364237 Compressor assembly having a clutch triggered by a small compressor and actuated by discharge pressure |
| 11/10/1994 | WO1994025755A1 Hydraulic fluid-driven, multicylinder, modular, reciprocating piston pump |
| 11/09/1994 | CN1094794A Regulator for a variable displacement pump |
| 11/08/1994 | US5362215 Modular pump cylinder-head having integral over-pressure protection |
| 11/08/1994 | US5362210 Scroll compressor unloader valve |
| 11/08/1994 | US5362206 Pump control responsive to voltage-current phase angle |
| 11/08/1994 | CA1332930C Slant plate type compressor with variable displacement mechanism |
| 11/01/1994 | US5360319 Compressor assembly having control valve for triggered pressure actuated clutch |
| 10/27/1994 | WO1994024619A1 Level control switch |
| 10/26/1994 | EP0620940A1 Infusion pump configuration scheme using eeproms |
| 10/26/1994 | CN2180807Y Manualswitch for air pressure automatic switch of miniature air compressor |
| 10/25/1994 | US5358385 Dual diaphragm pump with adjustable discharge side pressure trip switch |
| 10/25/1994 | US5358036 Safety disc brake assembly |
| 10/25/1994 | US5357827 Torque compensated cam assembly and method |
| 10/20/1994 | DE4412570A1 Compressor with detector devices for a rotary movement |
| 10/18/1994 | US5356271 Capacity control mechanism for scroll-type compressor |
| 10/18/1994 | US5356269 Variable displacement pump |
| 10/18/1994 | US5355676 Hydraulic pressure supply apparatus |
| 10/13/1994 | WO1994023204A1 Method and apparatus for measuring piston position in a free piston compressor |
| 10/11/1994 | US5355067 Apparatus for controlling a stepping motor used for driving a chemical pump and method of controlling a stepping motor used for driving a chemical pump |
| 10/11/1994 | CA2012693C Intake valve for vacuum compressor |
| 10/06/1994 | DE4310267A1 Device for cleaning articles |
| 10/05/1994 | EP0618362A1 Control device for a fluid pressure booster |
| 10/05/1994 | CN1026147C Single-cylinder, double-acting hydraulic mud pump |
| 10/04/1994 | US5352098 Turn valve control system for a rotary screw compressor |
| 10/04/1994 | US5352096 Air compressor for automobiles |
| 10/04/1994 | US5352095 Method for controlling hydraulic pump driven by engine |
| 09/29/1994 | WO1994021919A1 Equalization of load across a compressor upon shutdown |
| 09/29/1994 | DE4409820A1 Determining the state of filling of a rod pump from the motor output |
| 09/29/1994 | DE4409818A1 Determining the beam position in a rod pump from the motor output |
| 09/29/1994 | DE4409448A1 Integrierte Elektromotor-Hydropumpeneinheit mit Motordrehrichtungserkennung Integrated electric motor hydraulic pump unit with motor rotation direction detection |
| 09/29/1994 | DE4309380A1 Method for monitoring a system |
| 09/29/1994 | DE4308837C1 Method and circuitry for the electric control of the performance of an oscillating-piston pump |
| 09/28/1994 | CN1092863A Flow-controlled sampling pump apparatus |
| 09/24/1994 | CA2119907A1 Rod pump beam position determination from motor power |
| 09/24/1994 | CA2119906A1 Rod pump flow rate determination from motor power |
| 09/24/1994 | CA2119905A1 Detection of rod pump fillage from motor power |
| 09/21/1994 | EP0616087A1 Communal vehicle with pressure regulating valve |
| 09/20/1994 | US5347664 Suction fitting with pump control device |
| 09/15/1994 | WO1994020753A2 Cyclic hydraulic pump |
| 09/15/1994 | WO1994020190A1 Apparatus and method for supercritical fluid extraction |
| 09/15/1994 | WO1994020189A1 Apparatus and method for supercritical fluid extraction |
| 09/15/1994 | WO1994020188A1 Apparatus and method for supercritical fluid extraction |
| 09/15/1994 | WO1994020157A1 Automated peritoneal dialysis system with detector for recognition of empty supply reservoir and tubing occlusion |
| 09/15/1994 | CA2157906A1 Cyclic hydraulic pump |
| 09/14/1994 | EP0615126A2 Solvent pumping system |
| 09/14/1994 | EP0615099A1 Fluid distribution network with controller |
| 09/13/1994 | US5347467 Load sharing method and apparatus for controlling a main gas parameter of a compressor station with multiple dynamic compressors |
| 09/13/1994 | US5346372 Fluid flow regulating device |
| 09/13/1994 | US5346370 Portable pumping system with generator powered clutch assembly |
| 09/13/1994 | US5346368 Sludge flow measuring system |