| 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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| 09/13/1994 | CA2054380C Liquid level control with capacitive sensors |
| 09/08/1994 | DE4306921A1 Booster pump for a hydraulic system |
| 09/07/1994 | EP0614048A1 Device with automatic burner |
| 09/07/1994 | EP0614010A1 Improvements in the regulation of fluid conditioning stations |
| 09/07/1994 | CN1025881C Power transmission |
| 09/06/1994 | US5344288 Device for controlling displacement of variable displacement hydraulic pump |
| 09/06/1994 | US5343708 Electronically controlled cryopump |
| 08/30/1994 | US5343384 Method and apparatus for controlling a system of compressors to achieve load sharing |
| 08/30/1994 | US5342177 Tire automatic pneumatic pump device |
| 08/30/1994 | US5342176 Method and apparatus for measuring piston position in a free piston compressor |
| 08/30/1994 | CA1331751C Rotary compressor |
| 08/24/1994 | EP0611578A1 Medical pump |
| 08/23/1994 | US5340281 Protective device for a water-pump apparatus |
| 08/18/1994 | WO1994018512A1 Starting arrangement for small refrigeration systems |
| 08/17/1994 | EP0610940A1 Regulator for a variable displacement pump |
| 08/17/1994 | CN2174576Y Large power low-speed displacement pump units |
| 08/16/1994 | US5338161 Gear pump having internal bypass valve |
| 08/16/1994 | US5338157 Systems and methods for communicating with ambulatory medical devices such as drug delivery devices |
| 08/16/1994 | US5337779 Automatic drain device |
| 08/16/1994 | CA2038112C Charge flow priority circuit |
| 08/10/1994 | EP0528888B1 Method for dampening vibrations in hydraulic systems |
| 08/09/1994 | US5336063 Electric drive pump |
| 08/09/1994 | US5336055 Closed loop sludge flow control system |
| 08/09/1994 | US5336052 Viscous material pump |
| 08/09/1994 | US5336051 Inline non-invasive pressure monitoring system for pumps |
| 08/09/1994 | US5335926 Hydraulic actuating apparatus for opening and closing a vehicle cover with auxiliary manual hydraulic pump |
| 08/09/1994 | CA2051845C Determination of well pumping system downtime |
| 08/04/1994 | WO1994017308A1 Process for regulating the capacity of lubricant pumps and lubricant pump therefor |
| 08/03/1994 | EP0608919A1 Terminal element |
| 08/02/1994 | US5333999 Variable displacement compressor |
| 08/02/1994 | US5333997 Device for the power control of at least two hydrostatic variable displacement pumps |
| 07/27/1994 | EP0607687A2 Multistage vacuum pump |
| 07/26/1994 | US5332366 Concrete pump monitoring system |
| 07/26/1994 | US5332365 Slant plate type compressor with variable capacity control mechanism |
| 07/26/1994 | US5331998 Radial valve with unloader assembly for gas compressor |
| 07/26/1994 | CA1330973C Scroll type compressor with variable displacement mechanism |
| 07/20/1994 | EP0606980A2 Liquid chromatography system |
| 07/20/1994 | CN1089686A Variable displacement hydrostatic device and neutral return mechanism therefor |
| 07/19/1994 | US5330327 Transfer tube material flow management |
| 07/19/1994 | CA1330835C Terminal element |
| 07/14/1994 | DE4301287A1 Slip-controlled hydraulic braking system for vehicle |
| 07/13/1994 | EP0606126A2 Body support system |
| 07/13/1994 | CN2171702Y Control device of exit pressure for air compressor |
| 07/13/1994 | CN1025449C Turbocompressor with variable quantity mechanism |
| 07/07/1994 | WO1994015099A1 Solution pumping system for maximizing output while minimizing pumping pressures |
| 07/07/1994 | WO1994015097A1 Device for controlling pressure in cylinder chamber of hydraulic pump motor |
| 07/07/1994 | CA2145294A1 Solution pumping system for maximizing output while minimizing pumping pressures |
| 07/06/1994 | EP0604700A1 Method and apparatus for refrigerant recovery |
| 07/06/1994 | EP0418306B1 Infusion device with disposable elements |
| 07/05/1994 | US5326230 Closed loop control circuit for variable hydraulic pump |
| 07/01/1994 | CA2095513A1 Method and apparatus for refrigerant recovery |
| 06/29/1994 | EP0604358A1 A scroll compressor with a thermally responsive bypass valve for high temperature protection |
| 06/29/1994 | EP0604020A1 Flow-controlled sampling pump apparatus |
| 06/29/1994 | EP0603694A1 Vacuum system |
| 06/29/1994 | CN2170393Y Prepressed air exhausting capsule for three-cylinder single-action reciprocating pump |
| 06/28/1994 | US5324173 High pressure intensifier |
| 06/28/1994 | US5324171 Pump assembly including a hermetically sealed switch capsule for housing a magnetically actuated switch |
| 06/28/1994 | US5323703 Installation for supplying pressurized gas to pressure-medium actuated systems of a printing machine |
| 06/28/1994 | CA1330430C Scroll type compressor |
| 06/23/1994 | DE4243075A1 Control system for hydraulic pump |
| 06/23/1994 | DE4242420A1 Pump for vehicle hydraulic antilock braking system |
| 06/22/1994 | EP0602972A1 System and method for operating a respiration compressor system under low voltage conditions |
| 06/22/1994 | CN2169709Y Household pressure increasing water pump with magnetic control switch |
| 06/22/1994 | CN2169704Y Alarm type lubricating oil pump |
| 06/21/1994 | US5322506 Irrigation system with high flow bypass for use with endoscopic procedure |
| 06/21/1994 | US5322422 Volumetric pump tube reshaper and method |
| 06/21/1994 | US5322119 Submersible well probe sleeve |
| 06/21/1994 | CA1330365C Apparatus and method for controlling operation of storm sewage pump |
| 06/15/1994 | CN2168966Y Hydraulic unloading apparatus of sucking machine |
| 06/15/1994 | CN1025065C Operation control circuit for pump motor |
| 06/14/1994 | US5320503 Infusion device with disposable elements |
| 06/14/1994 | US5320502 Infusion device with disposable elements |
| 06/14/1994 | US5320499 Open-loop hydraulic supply system |
| 06/14/1994 | US5320495 Pressure switch adaptor for well system |
| 06/14/1994 | CA2074444C Combination lift piston/axial port unloader arrangement for a screw compressor |
| 06/08/1994 | EP0512983B1 Airflow control system pump and housing |
| 06/07/1994 | US5318410 Variable displacement compressor |
| 06/07/1994 | US5318409 Rod pump flow rate determination from motor power |
| 06/07/1994 | US5317871 Circuit capable of varying pump discharge volume in closed center-load sensing system |
| 06/07/1994 | CA2052318C Scroll type compressor |
| 06/07/1994 | CA2050693C Scroll type compressor |
| 06/01/1994 | EP0599599A1 Electrohydraulic pump load control system |
| 06/01/1994 | CN2167217Y Protection means for chain type oil pump machine |
| 06/01/1994 | CN2167216Y Starting arrangement for hydraulic pump |
| 05/31/1994 | US5316450 Fixed cam variable delivery vane pump |
| 05/31/1994 | US5316448 Process and a device for increasing the efficiency of compression devices |
| 05/31/1994 | US5316447 Axial multi-piston type compressor having movable discharge valve assembly |
| 05/31/1994 | US5316446 Variable capacity wobbling swash plate type compressing apparatus |
| 05/31/1994 | US5316444 Pump control and method of pumping |
| 05/31/1994 | US5316085 Method of recovering contaminated subterranean fluids from a wellbore |
| 05/31/1994 | US5315829 Hydraulic system for hydraulic operators |
| 05/26/1994 | WO1994011636A1 Rocking swash plate type variable capacity compressor |
| 05/26/1994 | WO1994011216A1 A hybrid motor containing an electric motor and a nonelectric motor, especially for use in construction machines |
| 05/25/1994 | CN2166250Y Stepless quantity regulating mudjack |
| 05/24/1994 | US5315294 Fluid metering verification system |
| 05/24/1994 | US5314016 Method for controlling rod-pumped wells |
| 05/11/1994 | WO1994010447A1 Capacity control device in variable capacity hydraulic pump |
| 05/11/1994 | DE4334729A1 Fluid delivery pump for liquid medication - has pair of stops to control movement of rod actuating pump membrane |
| 05/11/1994 | CN2164474Y Numerical controlled oil pump combined use with well extracting frame |
| 05/05/1994 | DE4236716A1 Hydraulic accumulator charging system for vehicle drive - uses switch-off valve actuated by piston responsive to pressure in accumulator |