| Patents for G05D 9 - Level control, e.g. controlling quantity of material stored in vessel (4,688) |
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| 09/21/1993 | US5246045 Automatic refrigerant tank volume fill control apparatus |
| 09/16/1993 | DE4207935A1 Automatic closure valve e.g. for when filling level is reached in bath - has float coupled by cable to link on poppet valve which releases spring-loaded poppet to shut off supply. |
| 09/08/1993 | CN2141913Y Floating magneto-electric induction type liquid level controller |
| 08/31/1993 | CA2015140C Battery monitoring and charging circuit for sump pumps |
| 08/24/1993 | US5238369 Liquid level control with capacitive sensors |
| 08/19/1993 | WO1993016425A1 Method and device for monitoring the oil level in the oil sump of for instance an internal-combustion engine, in particular a ship's diesel |
| 08/19/1993 | DE4204502A1 Verfahren und vorrichtung zum ueberwachen des oelstandes im oelsumpf einer verbrennungskraftmaschine o. dgl., insbesondere eines schiffsdieselmotors Method and device for supervise the oelstandes in oelsumpf a combustion-engine o. The like., In particular a marine diesel engine |
| 08/11/1993 | CN2140079Y Vibration bar driving by piezoelectric crystal |
| 08/04/1993 | CN2139714Y Automatic full liquid level controller |
| 08/04/1993 | CN2139713Y Automatic liquid level controller |
| 08/04/1993 | CN1075002A Flow controller of cooling agent |
| 07/28/1993 | EP0553056A1 Refrigerant flow control device |
| 07/21/1993 | EP0552068A1 Control system and method |
| 07/17/1993 | CA2087371A1 Control system and method |
| 07/15/1993 | DE4200603A1 Dispensing of charges of medium with specified measurement parameter demand value - using dispensing system with measurement transducer and adjustable extraction device |
| 07/07/1993 | EP0549603A1 Safety device for domestic appliances through which water flows. |
| 07/07/1993 | CN2137797Y Electronic controlling device for liquid level displaying |
| 07/06/1993 | US5224445 Boiler water liquid level control |
| 06/30/1993 | CN2137373Y Level supervision and control unit |
| 06/23/1993 | CN2137000Y Water level automatic controlling sluice gate |
| 06/23/1993 | CN2136999Y Fine driving water level self-controlling magnetizer |
| 06/10/1993 | WO1993011394A1 Process for setting, controlling and monitoring the level in a refrigerant evaporator |
| 06/09/1993 | DE4139064A1 Verfahren zur einstellung, regelung und ueberwachung des fuellungsgrads eines kaeltemittelverdampfers Method for setting, controlling and monitoring the fuellungsgrads a kaeltemittelverdampfers |
| 06/09/1993 | CN2135797Y Liquid level controller |
| 06/09/1993 | CN2135796Y Liquid level automatic lifeing controller |
| 06/01/1993 | US5216288 Water level control circuit for sump pumps and the like |
| 05/30/1993 | CA2056726A1 Electronic level control system minimizing level variation of liquid in a reservoir |
| 05/26/1993 | CN1072515A Electronic stuff level switch |
| 05/19/1993 | CN2133868Y Automatic electronic controller for liquid level |
| 05/19/1993 | CN2133867Y Water level control valve |
| 05/12/1993 | CN2133012Y Automatic integrated circuit water (liquid) level controller |
| 05/12/1993 | CN2133011Y Water level automatic controller for majorizating water quality |
| 05/11/1993 | US5209822 Undigested wood chips, papermaking |
| 05/11/1993 | US5209080 Refrigerant flow control device |
| 05/05/1993 | CN2132205Y 自控蓄水器 Controlled water reservoir |
| 05/05/1993 | CN2132204Y Automatic closing water seal device |
| 05/05/1993 | CN2132167Y 电子式液位传感控制器 Electronic level sensing controller |
| 05/04/1993 | US5207251 Liquid level sensing method and apparatus |
| 05/04/1993 | CA1317195C Automated chemical storage and chemical feed system |
| 04/29/1993 | WO1993008518A1 Method and apparatus for controlling liquid level in a knot drainer |
| 04/28/1993 | CN2131131Y Monostable switch type water level controller |
| 04/28/1993 | CN2131130Y Multipurpose water level controller |
| 04/14/1993 | CN2129944Y Anti-explosive float ball liquid level controller |
| 04/01/1993 | WO1993006572A1 Proximity detection system and oscillator, and method of using same |
| 04/01/1993 | DE4132042A1 Automatic regulator of water level in sauna and steam bath evaporator - generates vacuum in sealed supply tank which is vented by falling level in evaporator. |
| 03/31/1993 | CN2129019Y Multi-function automatic controller for water level |
| 03/31/1993 | CN2129018Y Infrared ray water auto-feeding-cutting device for tooth curing |
| 03/23/1993 | US5195861 Automatic rate matching system |
| 03/23/1993 | US5195678 Automotive oil level control apparatus |
| 03/17/1993 | CN2128377Y 液位显示控制仪 Level display controller |
| 01/27/1993 | CN1068405A Three-level memory-controlled valve |
| 01/26/1993 | CA1313058C Method and apparatus for monitoring a liquid level |
| 01/20/1993 | CN1068175A Constant pressure variable control system for fully automatic air compression station |
| 01/05/1993 | US5176174 Flow metering and distribution devices |
| 12/29/1992 | US5174931 Vessel for holding building material, smoothing member for forming uniform coating over previous layer, means to apply pattern of synergistic stimulation to form layer |
| 12/23/1992 | EP0519523A2 Valve control system |
| 12/22/1992 | US5172595 Bin level control circuit and transducer mounting system for an ice making machine |
| 12/16/1992 | CN2125157U Domestic water-level automatic keeper |
| 12/16/1992 | CN2124560U Automatic sealing device for pickle jar |
| 12/10/1992 | DE4118896A1 Monitoring and displaying appts. for oil level in reservoir e.g. of compressor - shows level for reference or under load state during other states using last level change for correction |
| 11/26/1992 | DE4116015A1 Electric pump level control system - has AC signal on level monitoring electrodes with remote control unit |
| 11/25/1992 | EP0515326A1 A device for automatically topping up the lubricating oil in internal combustion engines |
| 11/12/1992 | DE4115207A1 Redundant anti-overfill device for liq. in open or pressurised container - has advance and main alarm probes in tubes sealed automatically by release of spring-loaded pistons |
| 10/27/1992 | US5158111 Pilot valve for pneumatic control systems with improved poppet |
| 10/21/1992 | EP0509923A1 Pressurized water nuclear reactor comprising a primary coolant draining system with an intrinsic determined low water level safety |
| 10/21/1992 | EP0509422A1 Apparatus for controlling the overflow and water level of hydraulic installations |
| 10/13/1992 | US5154205 Method and apparatus for maintaining level of water in above-ground swimming pools |
| 09/30/1992 | CN2117628U Automatic liquid level controlling and pump protecting apparatus |
| 09/30/1992 | CN2117627U Liquid level controller of tank |
| 09/24/1992 | DE4108967A1 System isolator, esp. for protecting drinking water systems against contamination - has float and float switch controlling delivery valve and pumps according to level of medium |
| 09/23/1992 | EP0504539A1 Electronic level regulator for milled coffee dose deliverers |
| 09/23/1992 | CN2116928U Strike-off board type charge level control unit |
| 09/16/1992 | CN2116236U Full automatic electronic water level controller |
| 09/16/1992 | CN2116235U Water level self-controller with single line a. c. electrode |
| 09/10/1992 | DE4107320A1 Liq. nitrogen@ continuous feeder for ultra-microtome cooling chambers - adjusts power supply to electric heater in Dewar vessel for continuous flow irrespective of vessel level |
| 09/08/1992 | US5145323 Liquid level control with capacitive sensors |
| 09/01/1992 | US5143703 Fluid flow control and isolation |
| 08/26/1992 | CN2114188U Automatic control device of water flow and water temp |
| 08/19/1992 | CN2113512U Double stopper type liquid lever controller |
| 08/19/1992 | CN2113394U Automatic shutting off device for water gate |
| 08/19/1992 | CN1063765A Liquid level controller |
| 08/05/1992 | CN2111958U Constant liquid level gas evaporator |
| 07/28/1992 | CA1305770C Automatic control system for filling beverage containers |
| 07/08/1992 | CN2109596U Automatic control valve for water level |
| 07/08/1992 | CN2109595U Automatic control detector for oil/water interface level |
| 07/07/1992 | US5127450 Method and apparatus for regulating the level of a mixture of flowable material in a container |
| 07/01/1992 | EP0492573A1 Alkylation apparatus and method for isolating the catalyst |
| 07/01/1992 | CN2108953U Water level controller |
| 07/01/1992 | CN2108952U Full automatic water supply and stored controller |
| 06/30/1992 | US5126729 Automated chemical storage and chemical feed system |
| 06/24/1992 | CN2108094U Photoelectric glass liquid-level controlling instrument |
| 06/23/1992 | CA1304149C2 Automatic control system for filling beverage containers |
| 06/17/1992 | CN2107674U Liquid level adjusting device |
| 06/17/1992 | CN2107673U Water level automatic adjusting device for countryside family use |
| 06/17/1992 | CN2107672U Water level self-controlling device |
| 06/17/1992 | CN2107671U Water level controlling valve |
| 06/10/1992 | EP0489405A2 Controlling of a electrical household appliance |
| 06/10/1992 | CN2107039U Automatic level controller |
| 06/10/1992 | CN1061856A Multi-control hydrodynamic power generator |
| 06/03/1992 | EP0487806A1 Level measuring device for liquified gases |