| 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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| 07/27/1988 | EP0275968A2 Control device for a hydrostatic transmission for at least two users |
| 07/20/1988 | EP0275045A2 Device for controlling capacity of variable capacity compressor |
| 07/19/1988 | US4757888 Electro magnetic clutch with a rotation detector for a refrigerant compressor |
| 07/19/1988 | CA1239308A1 Automatic drainage device |
| 07/12/1988 | US4756669 Air compressor control apparatus |
| 07/06/1988 | EP0273214A2 Controlling system for a hydrostatic machine |
| 06/22/1988 | EP0271661A2 Device for transmitting a drive force between two construction parts |
| 06/21/1988 | US4752385 A multiple piston reciprocating pump |
| 06/21/1988 | US4752188 Oil Detection method and apparatus for a pump submerged in a transformer vault |
| 06/21/1988 | US4752138 Device for stirring or pumping |
| 06/16/1988 | DE3642125A1 Suction fittings for dosing pumps or the like |
| 06/16/1988 | DE3641989A1 Positive displacement device in which the volume flow can be regulated |
| 06/15/1988 | EP0271456A2 Delivery controlling device for variable delivery piston pumps |
| 06/15/1988 | EP0270740A2 Method of controlling a fluid motor |
| 06/14/1988 | US4750866 Control device for a pump with adjustable flow |
| 06/14/1988 | US4750337 Oil management in a parallel compressor arrangement |
| 06/08/1988 | EP0270474A1 Electrically commutated, variable speed compressor control system |
| 06/08/1988 | EP0269784A2 Arrangement for controlling a reversible electric motor for a pump of a pneumatic cetral locking system of a motor vehicle |
| 06/07/1988 | US4749925 Well pump control |
| 06/01/1988 | EP0269513A2 Oil cable pumping plant |
| 06/01/1988 | EP0269500A2 Plunger pump of quick pressure-rise type |
| 05/31/1988 | US4747755 Capacity control device for a screw compressor |
| 05/31/1988 | US4747300 Sensing pump with improved discrimination between liquids and gases |
| 05/31/1988 | US4747268 Control means for a plurality of mechanically coupled hydrostatic machines with variable volume in a drive system with impressed pressure |
| 05/25/1988 | EP0268078A1 Total capacity regulating device for at least two hydrostatic transmissions |
| 05/24/1988 | US4746276 Gear pump having conditional dry valve closure structure |
| 05/17/1988 | US4744734 Means for controlling air discharge, in an air compressor |
| 05/17/1988 | US4744733 Scroll type compressor with variable displacement mechanism |
| 05/17/1988 | US4744732 Variable capacity vane compressor |
| 05/17/1988 | US4744731 Variable capacity vane compressor |
| 05/17/1988 | US4744729 For intermittently operating a pump of a well |
| 05/10/1988 | US4743168 Variable capacity compressor and method of operating |
| 05/10/1988 | CA1236548A1 Power system for infusion pumps |
| 05/03/1988 | US4741675 Flow control system for a hydraulic pump |
| 05/03/1988 | US4741674 Manifold arrangement for isolating a non-operating compressor |
| 04/28/1988 | DE3734928A1 Piston pump and capacity-regulating valve for a piston pump |
| 04/27/1988 | EP0265145A2 Hydro-pneumatic pumpsets |
| 04/27/1988 | EP0264949A2 Variable capacity compressor |
| 04/26/1988 | US4740140 Pump having integral switch and bypass valve |
| 04/26/1988 | US4739616 Summing pressure compensation control |
| 04/26/1988 | CA1235617A1 Hydrostatic vehicle control |
| 04/21/1988 | WO1988002818A1 Double acting fluid intensifier pump |
| 04/20/1988 | EP0264005A2 Sliding-vane rotary compressor |
| 04/19/1988 | US4738595 Hydraulic pump with integrated sump and accumulator |
| 04/19/1988 | CA1235402A1 Refrigerant compressor with a capacity adjusting mechanism |
| 04/13/1988 | EP0263558A2 Hydraulic piston motor having means for measuring the speed of rotation |
| 04/13/1988 | CN85108837B Apparatus for releasing clutch which connects the motor driving device with the compressor |
| 04/12/1988 | US4737083 Diaphragm pump with an elastic filter disk |
| 04/12/1988 | US4737082 Lift valve for rotary screw compressors |
| 04/12/1988 | US4737081 Variable capacity vane compressor |
| 04/12/1988 | US4737080 Valve assembly |
| 04/12/1988 | US4737079 Variable capacity wobble plate compressor |
| 04/12/1988 | US4737078 Control valve for a pump with variable displacement volume |
| 04/07/1988 | WO1988002441A1 Driving control apparatus for hydraulic construction machines |
| 04/06/1988 | EP0262837A2 Hydraulic unloading valves |
| 04/05/1988 | US4736143 Torque control apparatus for rotary machine |
| 04/05/1988 | US4735058 Air conditioning apparatus |
| 03/29/1988 | US4734628 Electrically commutated, variable speed compressor control system |
| 03/29/1988 | US4734131 Permanent-magnetic material |
| 03/29/1988 | CA1234557A1 Hydraulically powered compressor and hydraulic control and power system therefor |
| 03/23/1988 | EP0260764A1 Liquid chromatograph |
| 03/23/1988 | EP0260760A2 Liquid chromatograph |
| 03/22/1988 | US4733152 Feedback system |
| 03/22/1988 | US4731999 Power transmission |
| 03/16/1988 | EP0259619A1 Lubrication oil pump |
| 03/16/1988 | EP0259464A1 Method and system for infiltration detection using pressure measurment. |
| 03/16/1988 | EP0259397A1 Pump unit with a level regulator |
| 03/15/1988 | US4730999 Negative pressure supply apparatus for automobiles |
| 03/15/1988 | US4730987 Variable delivery compressor |
| 03/15/1988 | US4730514 Differential speed limiting device mechanism |
| 03/15/1988 | CA1234202A1 Pump unit for sampling air |
| 03/09/1988 | EP0258424A1 Intravenous line valving system. |
| 02/25/1988 | WO1988001349A1 Hydraulic pump control unit |
| 02/25/1988 | DE3628370A1 Hydraulic system for commercial vehicles especially road vehicles |
| 02/24/1988 | EP0256624A2 Variable capacity vane compressor |
| 02/23/1988 | US4726740 Rotary variable-delivery compressor |
| 02/23/1988 | US4726738 Motor-driven compressor provided with torque control device |
| 02/23/1988 | US4726187 Circuit arrangement for controlling the speed of rotation of a hydrostatic machine |
| 02/16/1988 | US4724680 Air conditioning apparatus and control method thereof |
| 02/16/1988 | US4724672 Energy storing hydraulic lift pump for oil wells |
| 02/10/1988 | EP0255681A2 Flow control system for a hydraulic pump |
| 02/09/1988 | US4723895 Method of and apparatus for effecting volume control of compressor |
| 02/09/1988 | US4723416 Control system for variable capacity type compressor for air conditioning system of vehicle |
| 02/03/1988 | EP0254867A2 Device for changing with little loss the flow rate of a constant feed pump |
| 02/02/1988 | US4722734 Device for the intermittent pulsatory application of liquid pharmaceuticals |
| 02/02/1988 | US4722359 Valve arrangement for high pressure pumps |
| 02/02/1988 | US4722230 Pressure gauge for high pressure flow through diaphragm pump |
| 02/02/1988 | US4722186 Dual pressure displacement control system |
| 01/27/1988 | EP0254529A2 Permanent-magnetic material |
| 01/27/1988 | EP0254524A2 Gas compressor apparatus |
| 01/26/1988 | US4721439 Piston pump and drive therefor |
| 01/20/1988 | EP0252955A1 Pressure regulator with integrated pick-off. |
| 01/19/1988 | CA1231583A1 Low volume submersible well pump |
| 01/14/1988 | DE3622939A1 Hydraulic control or regulating device |
| 01/13/1988 | EP0252658A2 Variable capacity vane compressor |
| 01/12/1988 | US4718824 Usable device, in particular for the pumping of an extremely viscous fluid and/or containing a sizeable proportion of gas, particularly for petrol production |
| 01/05/1988 | US4716924 Valve assembly for reciprocating plunger pump |
| 12/29/1987 | US4715793 Flow regulating rotary vane pump |
| 12/29/1987 | US4715791 Metering pump |
| 12/29/1987 | US4715788 Servo control variable displacement pressure compensated pump |