Patents
Sitemap › G05 - Controlling; Regulating › G05D - Systems for controlling or regulating non-electric variables › G05D 9 - Level control, e.g. controlling quantity of material stored in vessel
Patents for G05D 9 - Level control, e.g. controlling quantity of material stored in vessel (4,688)
10/1989
10/24/1989CA1262480A1 Automatic precision liquid loading control system
10/17/1989US4874114 Device for dispensing a predetermined quantity of a liquid
10/11/1989CN2045862U Floating ball type automatic protector for electric water-heating unit
10/04/1989CN2045464U Controller for boiler liquid level
09/1989
09/20/1989CN2044744U Liquid level display
09/14/1989DE3904858A1 Method and device for controlling a melt bath
09/13/1989CN1035560A Utilization of detector/conveyer on nuclear model interfacial positions
09/12/1989US4865250 Automotive oil level control valve apparatus
09/12/1989US4865073 Liquid level control for refrigeration system
09/07/1989DE3805770A1 Apparatus for periodic control of liquid levels
09/06/1989EP0331109A2 Liquid level regular device
08/1989
08/30/1989EP0330123A2 Utilization of a nuclear-type interface level detector/transmitter
08/30/1989CN2043771U Signal transducer for liquid level control
08/23/1989CN2043384U Double-colour electric contact liquid level indicator
08/16/1989CN2042977U 液位控制器 Level Controller
08/15/1989US4856288 Refrigerant alert and automatic recharging device
08/15/1989CA1258510A1 Alternator circuit arrangement useful in liquid level control system
08/10/1989WO1989007293A1 Liquid level control system
08/08/1989US4853984 System and method for maintaining a swimming pool cover drained of accumulated precipitation
07/1989
07/25/1989US4852053 Material and energy balance reconciliation
07/19/1989CN1034058A Device for dispensing predetermined quantity of liquid
07/13/1989DE3743703A1 Process and system for cleaning the sewer pipe of a siphon construction
07/12/1989CN2041051U All-integrated twocolour water-level display and alarm apparatus
06/1989
06/28/1989EP0322001A2 Apparatus for adjusting level of liquid to be filled into packaging tube
06/14/1989CN2039441U Automatic level controller
06/13/1989US4838303 Buoyancy operable liquid level sensor for controlling an alarm pressure fluid supply responsive to changes of liquid level in a pressure vessel
06/07/1989CN2038717U Magnetic control water-adding controller
06/06/1989US4836239 Water cooling tower and water level control system therefor
05/1989
05/31/1989CN2038643U Automatic double liquid level controller
05/31/1989CN2038583U Automatic control fluid level valve
05/24/1989EP0316698A1 Apparatus for delivering a predetermined dose of a liquid
04/1989
04/26/1989CN2036529U Liquid level autocontrol valve for filling liquid for vehicle
04/19/1989CN2036291U Liquid level automatic controller
04/18/1989US4822996 Use in a refrigeration device
04/11/1989US4819483 Level indicator control system for use with capacitance probes in tanks containing substances
04/04/1989US4817689 Automatic control system for filling beverage containers
04/04/1989US4817217 For maintaining water levels
04/04/1989CA1252178A1 Swimming pool control system
03/1989
03/15/1989CN1003579B Self-fill system
03/08/1989CN2033918U Barrel-type liquid level detecting and controlling device
03/08/1989CN2033917U Liquid level auto-controlling pipe of pressure dissolved-gas tank
02/1989
02/22/1989CN2033134U Pendulum rod charge level incicator
02/21/1989US4805672 Automatic precision liquid loading control method
02/15/1989CN2032738U Automatic controller for water tower
02/14/1989US4804936 Liquid selective automatic bilge pump control
02/09/1989DE3725392A1 Discharge controller for retaining chambers in sewerage systems
01/1989
01/18/1989CN2031121U Double water level self-controlled valve
01/18/1989CN2031120U Ac liquid level relay
01/17/1989US4798232 Automatic control system for filling beverage containers
01/10/1989US4797027 Automatic level-regulating sluice
01/04/1989CN2030345U Automatic controller for water level
12/1988
12/28/1988EP0296889A1 An apparatus for filling bags or pouches with a perfusion liquid
12/27/1988US4793952 Gas pressure line for controlling interface between liquids
12/14/1988CN88105406A Complex control system for bathroom
12/14/1988CN87209811U Double limitation-adjustable multi-functional controller
12/06/1988US4788861 Apparatus and circuit for monitoring the ink supply and ink printer devices
11/1988
11/29/1988CA1245745A1 Sanitary systems
11/15/1988CA1244909A1 Circuit arrangement for regulating the filling and refilling of containers with liquids
11/15/1988CA1244908A1 Circuit configuration for the controlled filling and refilling of containers with liquids
11/15/1988CA1244907A1 Self-fill system
11/10/1988DE3742313A1 Device for measuring the limit level and controlling the level of mainly very light, free-flowing bulk goods, especially prefoamed expandable polystyrene (EPS)
11/09/1988EP0290294A2 Automatic control system for filling beverage containers
11/02/1988CN87216999U High-temperature float type liquid-level auto-controller
11/02/1988CN87210728U Automatic controller for levels of high-temperature electric-condueting liquid
11/01/1988US4781894 Floats, chemical reactors, pressure detectors, extendable tube
10/1988
10/26/1988CN87213618U Multi-watertank water-level automatic controll system
10/18/1988CA1243250A1 Liquid replenishing apparatus
10/13/1988DE3710141A1 Level-control device in the case of an ultrasonic atomiser
09/1988
09/20/1988US4772157 Liquid level control system and method of operating the same
09/20/1988US4771804 Liquid level sensing and control assembly
08/1988
08/24/1988CN88210206U Fully automatic liquid level controller
08/23/1988US4766329 Automatic pump control system
08/17/1988EP0278092A2 Method and device for controlling a gas stream
08/10/1988CN87207718U Liquid-level automatic controller
07/1988
07/27/1988CN87215045U Liquid level measuring and controlling device
07/05/1988CA1238963A1 Liquid level control
07/05/1988CA1238836A1 Fluidic level control system
06/1988
06/28/1988CA1238617A1 Product liquid operated pilot and operating valves for filling systems
06/23/1988DE3642406A1 Electronic monitoring and control device for filling safety means
06/08/1988EP0270204A1 Method and apparatus for monitoring a liquid level
06/07/1988US4749925 Well pump control
05/1988
05/25/1988CN87213124U Floating ball type liquid level controller
05/17/1988US4744729 For intermittently operating a pump of a well
05/11/1988DE3636381A1 Apparatus having a collecting tank and a discharge device
05/04/1988CN87203865U Automatic liquid supplementing device for controlling liquid level
05/04/1988CN87203095U Multifunctional auto-monitoring device for oil depot
05/03/1988US4742244 For monitoring fluid volume in a vessel or storage tank
04/1988
04/13/1988CN86202834U 界面控制器 Interface Controller
03/1988
03/23/1988CN87213411U Light guide type detection, alarm and control device for liquid-level
03/23/1988CN87213332U Szy-24 model automatic water lever control instrument
03/23/1988CN87206858U Water level controller with high impedance and ac electrode
03/23/1988CN86106079A Photoelectric auto-controller for transparent liquid level
03/17/1988DE3630396A1 Arrangement for level measurement and monitoring of a liquid in a container
03/16/1988EP0259397A1 Pump unit with a level regulator
03/15/1988US4730534 Plant for realizing the running-in of a fluid comprising an explosible component
03/08/1988US4729495 Circuit configuration for the controlled filling and refilling of containers with liquids
03/01/1988US4728875 Method and apparatus for monitoring a liquid level
03/01/1988US4728005 Self-fill system
02/1988
02/16/1988US4724552 Apparatus for automatically maintaining a predetermined desired level of water in a swimming pool, and the like
02/10/1988CN86105521A Device for determination and/or control of certain charging level in container
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