| 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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| 05/26/1987 | US4668171 Torque control device for an adjustable hydropump |
| 05/20/1987 | CN85108266A Servo system |
| 05/12/1987 | US4664601 Operation control system of rotary displacement type vacuum pump |
| 05/12/1987 | US4663936 Load sensing priority system with bypass control |
| 05/07/1987 | DE3538397A1 Bypass valve for pumping and heating installations |
| 05/06/1987 | EP0220801A1 Variable volume gas compressor |
| 05/06/1987 | EP0220187A1 Flow regulating device for a rotary piston pump. |
| 04/28/1987 | US4660607 Sensor controlled sampling apparatus and method |
| 04/23/1987 | WO1987002423A1 Cyclic speed control apparatus in variable stroke machines |
| 04/23/1987 | DE3537421A1 Plastics processing machine with hydraulic drives |
| 04/22/1987 | EP0219360A1 Control device for a water supply installation |
| 04/22/1987 | EP0219290A2 Torque control apparatus for rotary machine |
| 04/14/1987 | US4657127 Clutch for linking a compressor with a drive means therefor |
| 04/14/1987 | US4656827 Fuel metering system for a gas turbine engine |
| 04/09/1987 | DE3535476A1 Warning device for pressure-gas systems, in particular for multi-stage compressors |
| 04/07/1987 | US4655693 Compressor apparatus |
| 04/07/1987 | US4655689 Electronic control system for a variable displacement pump |
| 04/07/1987 | US4655049 Pure-air generator |
| 04/01/1987 | CN86105602A Turbocompressor with variable quantity mechanism |
| 03/31/1987 | US4653986 Hydraulically powered compressor and hydraulic control and power system therefor |
| 03/31/1987 | US4653978 Relief valve system |
| 03/31/1987 | US4653383 Oil well sub-surface pump stroke extender |
| 03/26/1987 | DE3534155A1 Pressure adjuster |
| 03/25/1987 | EP0215525A2 Liquid chromatograph |
| 03/24/1987 | US4652802 Alternator circuit arrangement useful in liquid level control system |
| 03/24/1987 | US4652216 Compressor inlet control device |
| 03/24/1987 | US4652215 Variable capacity radial piston pump |
| 03/10/1987 | US4648806 Gas compressor |
| 03/10/1987 | US4648805 Air compressor with preloaded clutch |
| 03/10/1987 | US4648803 Control circuit and control valve for radial piston pump |
| 03/04/1987 | EP0213092A2 Method of controlling the pressure of a medium delivered by a compressor plant |
| 03/04/1987 | EP0211980A1 Driving torque controlling system |
| 03/03/1987 | US4646518 Driving unit for a feed pump |
| 03/03/1987 | CA1218636A1 Compressor |
| 02/24/1987 | US4645426 Bilge pump |
| 02/17/1987 | US4643649 Digital control for rapid refill of a liquid chromatograph pump |
| 02/12/1987 | DE3528067A1 Switching arrangement for a hydraulic system |
| 02/10/1987 | US4642034 Scroll type compressor with displacement adjusting mechanism |
| 02/10/1987 | US4642033 Positive displacement air compressors |
| 02/10/1987 | CA1217838A Method and appartus for detecting well pump-off |
| 02/04/1987 | EP0210170A1 Digital electro-hydraulic valve arrangement |
| 02/03/1987 | US4640095 Digital electro-hydraulic valve arrangement |
| 01/29/1987 | DE3624605A1 Device for regulating the outputs of several hydraulic pumps run by a common drive |
| 01/27/1987 | US4639203 Rotary fluid pressure device having free-wheeling capability |
| 01/22/1987 | DE3524790A1 Digital volume flow control for constant-delivery pumps |
| 01/21/1987 | EP0209499A2 A compressor plant |
| 01/20/1987 | US4637782 Rotary vane pump |
| 01/20/1987 | US4637781 Torque regulating system for fluid operated pump displacement control systems |
| 01/17/1987 | CN85103339A Hydraulic governor by binary direct control |
| 01/13/1987 | US4636148 Vane type compressor with volume control |
| 01/13/1987 | CA1216684A1 Control system for oil well bailer pump |
| 01/13/1987 | CA1216556A1 Sold out device for syrup pump |
| 01/07/1987 | EP0207687A1 Rotary fluid pressure device having free-wheeling capability |
| 01/07/1987 | EP0207679A2 Refrigerator compressor system and motor protector unit therefor |
| 01/07/1987 | CN86101484A Method for contralling gas etching |
| 01/06/1987 | US4634349 Variable displacement fluid pump |
| 01/06/1987 | CA1216268A1 Motor-driven reciprocating piston compressor, particularly for hermetically encapsulated small refrigerators |
| 12/31/1986 | CN86103611A Rotary fluid pressure device having free-wheeling capability |
| 12/30/1986 | US4632641 Pump arrangement for hydraulic installations |
| 12/30/1986 | US4632639 Air compressor with pre-loaded spring clutch |
| 12/30/1986 | US4632638 Regulator valve for hydraulic control system including variable displacement pump |
| 12/30/1986 | US4632145 Lifting device for the closure plate of compressor valves |
| 12/30/1986 | EP0206759A1 Scroll type compressor |
| 12/30/1986 | EP0206539A2 Boost pump with cylinder head assembly |
| 12/30/1986 | EP0205670A1 Refrigerating or heat-pump system |
| 12/23/1986 | US4631005 Input torque control device |
| 12/23/1986 | US4631000 Variable displacement hydraulic pressure intensifier |
| 12/16/1986 | US4629398 Oil detecting switch for controlling a pump |
| 12/09/1986 | US4627238 Output control apparatus for a hydrostatic drive with delivery adjustment |
| 12/03/1986 | EP0059712B1 Improved load-plus valve for variable displacement pumps |
| 12/02/1986 | US4626175 Fluid pump adapted to control the level of a fluid |
| 12/02/1986 | US4625749 Pressure supply device for a hydraulic system |
| 12/02/1986 | CA1214686A1 Method for regulating the function of a centrifugal pump |
| 11/25/1986 | US4624625 High pressure metering pump |
| 11/20/1986 | EP0134211B1 Pumping device for hydraulic plants |
| 11/18/1986 | CA1214142A1 Self-latching eccentric cam for dual stroke compressor or pump |
| 11/12/1986 | EP0201218A1 Governor valve |
| 11/12/1986 | EP0200722A1 Metering device |
| 11/12/1986 | CN86101181A Rotational speed detecting device for swash plate type compressor |
| 11/05/1986 | EP0199798A1 Method and piston pump for operation of a hydraulic system |
| 11/04/1986 | USH163 Single chamber recharger |
| 11/04/1986 | US4620835 Pump protection system |
| 11/04/1986 | CA1213469A1 Stroke control valve |
| 10/29/1986 | EP0199512A2 Compressor with rotation detecting device |
| 10/28/1986 | US4619595 Capacity control device for compressor |
| 10/28/1986 | US4619592 Pumping system having a main pump and a plurality of selectively operable subsidiary pumps |
| 10/22/1986 | EP0198241A2 Pumping system |
| 10/15/1986 | EP0197632A2 Actuator for a reciprocating slurry pump |
| 10/07/1986 | CA1212334A1 Coupling mechanism for wind turbine |
| 09/30/1986 | US4614481 Pump with replaceable cartridge |
| 09/30/1986 | US4614479 Adjustable automatically controlled pneumatic pump device |
| 09/30/1986 | CA1212163A1 Micro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor current |
| 09/23/1986 | US4613286 Constant torque control system for a variable displacement pump or pumps |
| 09/17/1986 | EP0194474A2 Method for regulating cavitation |
| 09/17/1986 | EP0194450A2 Digital control for rapid refill of a liquid chromatograph pump |
| 09/02/1986 | US4609331 Speed sensitive power steering valve |
| 09/02/1986 | US4609329 Micro-processor control of a movable slide stop and a movable slide valve in a helical screw rotary compressor with an enconomizer inlet port |
| 08/26/1986 | CA1210377A1 Dual capacity reciprocating compressor |
| 08/20/1986 | EP0191150A1 Device for disengaging a clutch connecting a motor to a compressor |
| 08/19/1986 | US4606197 Compressor control unit for automobile air conditioner |