| 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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| 07/08/1992 | EP0493596A1 Capacity control circuit for variable capacity pump |
| 07/08/1992 | EP0277253B1 Hydraulic pump control unit |
| 07/08/1992 | CN2109466U Automatic working device for spare pump |
| 07/08/1992 | CN2109465U Power saving device for car air compressor |
| 07/01/1992 | EP0492309A1 Fluid delivery system |
| 06/30/1992 | US5126642 Variable speed motor control |
| 06/30/1992 | US5125804 Variable-delivery vane-type rotary compressor |
| 06/30/1992 | US5125801 Pumping system |
| 06/30/1992 | CA1304331C Air dryer purge control for turbocharged compressors |
| 06/25/1992 | WO1992010685A1 Hydraulic system |
| 06/25/1992 | DE4041800A1 Two-cylinder pump with chambers interconnectable by valve - allows pistons to perform induction and pressure strokes alternately with fluid circulating without consumption of power |
| 06/23/1992 | US5124934 Constant feed water device |
| 06/23/1992 | US5123815 Fluid pumping apparatus with load limiting control |
| 06/23/1992 | US5123443 Fluid delivery system |
| 06/17/1992 | EP0490089A2 Improvement in refrigeration compressors with electronic control arrangement |
| 06/17/1992 | EP0489803A1 Reversible variable displacement hydraulic device |
| 06/17/1992 | DE4039999A1 Control for adjustable pump with piston actuated adjuster - has valve responding to suction pressure acting on adjuster independently of control valve |
| 06/16/1992 | US5122036 Ram air turbine with power controller and method of operation |
| 06/16/1992 | CA1303703C Flow control device for a reciprocating feed pump |
| 06/16/1992 | CA1303702C Condition responsive pump control utilizing integrated, commanded, and sensed flowrate signals |
| 06/11/1992 | DE4133750A1 Compartmentalised bulk tanker vehicle |
| 06/11/1992 | DE4041288C1 Hydraulic control system for several users - uses movable piston to match pump output to demand |
| 06/09/1992 | US5120199 Control system for valveless metering pump |
| 06/09/1992 | US5120198 Pump motor control responsive to conductive flow switch and dual timers |
| 06/09/1992 | US5119638 Air conditioning compressor protection device |
| 06/08/1992 | WO1992010679A1 Controlling vacuum level with a two-level vacuum system controller and adjustable speed drive |
| 06/03/1992 | EP0488043A1 Capacity volume ratio control for twin screw compressors |
| 06/03/1992 | CN1061647A Scroll type compressor |
| 06/02/1992 | US5119071 Method and apparatus for controlling induction motor for compressor |
| 06/02/1992 | US5118260 Scroll compressor protector |
| 06/02/1992 | US5118259 System for controlling oil viscosity |
| 06/02/1992 | CA1302481C Motor unit for a fluid pump and method of operation |
| 05/27/1992 | CN1061465A Scroll-type compressor |
| 05/26/1992 | US5116203 Detecting occlusion of proximal or distal lines of an IV pump |
| 05/26/1992 | CA1301543C Control device for a pump with adjustable flow |
| 05/20/1992 | EP0486122A1 Scroll type compressor |
| 05/20/1992 | EP0486121A1 Scroll type compressor |
| 05/20/1992 | EP0486120A1 Scroll type compressor |
| 05/19/1992 | US5114315 Clutch control system for an air compressor |
| 05/19/1992 | US5114314 Reciprocating type fluid delivery pump |
| 05/19/1992 | US5113655 Apparatus and method for removing liquid condensate from a compressed-air system |
| 05/19/1992 | CA1300978C Variable flow rate pump for fluid |
| 05/14/1992 | DE4035518A1 Vol flow measuring method for pumped feed - using detected pressure character along feed line to determine feed pump parameters |
| 05/13/1992 | EP0484884A2 Method for controlling the supercharge pressure in internal combustion engine |
| 05/13/1992 | EP0484762A1 Twin piston, commutator motor driven, high pressure pump for hydrocleaning equipment |
| 05/12/1992 | US5112199 Fluid pump unit with flow control valve |
| 05/12/1992 | US5112198 Refrigerant compressor having variable restriction pressure pulsation attenuator |
| 05/12/1992 | US5111789 Method for controlling torque of a pump |
| 05/12/1992 | CA1300718C Gradient system |
| 05/06/1992 | EP0484192A1 Hydraulic pump |
| 05/06/1992 | EP0484049A1 Flow loading unloader valve |
| 05/06/1992 | CN1060906A Transport refrigeration system |
| 04/30/1992 | WO1992007190A1 Double piston portioning apparatus |
| 04/30/1992 | WO1992006874A1 Brake pressure regulator for hydraulic motor vehicle braking systems |
| 04/29/1992 | EP0482925A1 System for controlling oil viscosity |
| 04/29/1992 | EP0482921A2 Transport refrigeration system |
| 04/29/1992 | EP0482592A1 Compressor capacity control method and apparatus therefor |
| 04/28/1992 | US5108267 Dual-mode control for hydrostatic transmission |
| 04/28/1992 | US5108264 Method and apparatus for real time compensation of fluid compressibility in high pressure reciprocating pumps |
| 04/28/1992 | US5108263 Method of optimizing the operation of two or more compressors in parallel or in series |
| 04/25/1992 | CA2053451A1 Transport refrigeration system |
| 04/23/1992 | DE4130729A1 Bremsdruckregelvorrichtung fuer eine hydraulische kraftfahrzeugbremsanlage A brake pressure control apparatus for a hydraulic automotive vehicle brake system |
| 04/23/1992 | DE4033422A1 Whirling-disc compressor especially for vehicular air-conditioning - has pivoting device causing disc to move into active position at defined angle w.r.t. zero setting |
| 04/23/1992 | DE4032876A1 Electric motor driven hydraulic pump unit - uses voltage control system to maintain constant pump motor speed under varying pressure conditions |
| 04/22/1992 | EP0481964A2 Variable-discharge high pressure pump |
| 04/22/1992 | EP0481376A2 Apparatus and method for controlling a step motor for driving a chemical pump |
| 04/22/1992 | CN2102386U Automatic controller of air pump |
| 04/21/1992 | US5106272 Sludge flow measuring system |
| 04/21/1992 | US5106268 Outlet pressure control system for electromagnetic reciprocating pump |
| 04/21/1992 | US5106267 Outlet pressure control system for electromagnetic reciprocating pump |
| 04/21/1992 | US5105728 Balanced variable-displacement compressor |
| 04/16/1992 | WO1992006306A1 Control system of hydraulic pump |
| 04/16/1992 | WO1992006305A1 Circuit capable of varying pump discharge volume in closed center-load sensing system |
| 04/16/1992 | DE4031708A1 Differential pressure regulation for pump system - shifts pump motor operating point to bring motor current into required range |
| 04/15/1992 | EP0480560A2 Scroll machine with overheating protection |
| 04/14/1992 | US5105140 Peristaltic pump motor drive |
| 04/14/1992 | US5105085 Fluid analysis system |
| 04/14/1992 | US5104300 Liquid additive metering |
| 04/09/1992 | DE4031709A1 Control for capacitor-start motorised pump - employs three comparators of main winding impedance with separate reference values for logic control of triacs |
| 04/08/1992 | EP0478933A1 Hydraulic system, such as a vehicle brake system or the like |
| 04/08/1992 | EP0478675A1 A loading machine equipped with a first and a second pump supplying pressure oil to at least one hydraulically driven working component, such as a hydraulic piston-cylinder device or hydraulic motor. |
| 04/08/1992 | CN1016208B Wobble plate type refrigerant compressor |
| 04/07/1992 | US5101857 Valve vane |
| 03/31/1992 | US5100301 Wobble plate type refrigerant compressor provided with an internal rotation detector generating a signal having a symmetrical wave form |
| 03/31/1992 | US5100298 Controller for underwater pump |
| 03/31/1992 | US5099871 Low friction proportional unloading valve |
| 03/31/1992 | US5099654 Method for controlling a motor vehicle air conditioning system |
| 03/26/1992 | DE4029765A1 DC electric motor driven pump operated in two directions - has motor terminals connected selectively with positive or negative pole operating voltage source across changeover contacts of two relays |
| 03/24/1992 | US5098259 Fluid pump unit with flow control valve |
| 03/24/1992 | CA1297730C Automatic control for variable displacement pump |
| 03/20/1992 | EP0512983A4 Airflow control system pump and housing. |
| 03/19/1992 | WO1992004216A1 Reciprocating pump |
| 03/19/1992 | DE4028881A1 Protecting gas or liq. delivery system against dry running - using light transmitted via transparent walls to receiver only if without medium |
| 03/18/1992 | EP0475931A1 Compressor valve |
| 03/18/1992 | EP0474720A1 Variable displacement pump. |
| 03/17/1992 | CA1297380C Hydraulic control system for operating a reversible hydraulic motor |
| 03/17/1992 | CA1297342C Radial piston pump and motor |
| 03/11/1992 | EP0440690A4 Body support system |
| 03/10/1992 | US5094753 Disposable extraction cartridge |
| 03/10/1992 | US5094597 Variable discharge pump |