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)
06/1985
06/11/1985US4522228 Fluidic level control system
05/1985
05/07/1985US4515178 Liquid level control device
04/1985
04/17/1985EP0137239A1 Method and device for automatic level control
03/1985
03/19/1985US4505288 Pneumatically controlled dump valve system for gas scrubbers
02/1985
02/12/1985US4498809 Flow compensated computing controller
02/12/1985US4498521 Molten metal level control in continuous casting
01/1985
01/09/1985EP0130635A1 Method of measuring and regulating the filling level of materials in a container
12/1984
12/04/1984US4485640 Device for automatically regulating the superfluid helium level in a tank
11/1984
11/27/1984US4484862 Submersible pumps
11/27/1984US4484601 Liquid level control device
11/21/1984EP0125789A1 Apparatus for filling a container with a liquid to a determined level
11/21/1984EP0125327A1 Electronic apparatus operating by the proximity effect for the independent monitoring and control of the water level in aquaria
11/20/1984CA1178019A1 Molten metal level control in continuous casting
11/14/1984EP0124978A1 Apparatus and method for controlling supply of articles
10/1984
10/31/1984EP0123138A1 Method of and installation for controlling a continuous casting plant
10/23/1984US4478555 Back pressure compensator for apparatus for controlling liquid level _in a reservoir
10/02/1984US4474204 Delivery and metering device control system
08/1984
08/29/1984EP0116716A2 Process and apparatus for separating media
07/1984
07/10/1984CA1170748A2 Control circuitry for water level control of pools
07/03/1984CA1170335A1 Nonlinear control of liquid level
06/1984
06/26/1984CA1169947A1 Liquid nitrogen level controller
05/1984
05/22/1984US4449851 Energy-efficient automatic sluice gate for sustaining a fluid level
05/16/1984EP0108435A1 Hot liquid level control
05/09/1984EP0108044A2 Cooling water flow regulating apparatus for coal gasification wells
05/08/1984CA1167136A1 Control circuitry for water level control of pools
04/1984
04/10/1984US4441520 Hydraulic fluid reservoir system
04/03/1984US4440188 Process and devices for controlling the level of a liquid
02/1984
02/21/1984CA1162578A1 Ventilator humidifier
02/15/1984EP0100666A1 Liquid level control device
01/1984
01/31/1984US4428394 Baffle mechanism and insert unit for downspout
10/1983
10/19/1983EP0091850A1 Automatic liquid level regulator for superfluid helium contained within a reservoir
09/1983
09/27/1983US4406299 Liquid level valve
09/20/1983US4405988 Process and device for monitoring the functioning of a liquid-liquid extraction column
09/20/1983US4404809 Liquid nitrogen level controller
09/14/1983EP0088496A1 Feedback automatic control apparatus
08/1983
08/30/1983CA1152831A1 Apparatus and means for regulating the blood flow from a cardiopulmonary by-pass
07/1983
07/20/1983EP0083800A1 Barrage for the automatic maintenance of a water level with little energy consumption
07/12/1983US4392782 Liquid level controller
06/1983
06/28/1983US4390793 Electronic liquid level control apparatus
06/28/1983US4390037 Gas regulation device for gas actuated valves
06/07/1983US4387434 Intelligent field interface device for fluid storage facility
06/07/1983US4386635 Method for controlling electrically controlled filling elements and system for carrying out the method
06/07/1983US4386623 Nonlinear control of liquid level
05/1983
05/17/1983US4384184 Explosion-proof device for measuring liquid levels
04/1983
04/26/1983US4380933 Electrical control mercury monometer
04/26/1983CA1145438A1 Automatic liquid level control
04/19/1983CA1145013A1 Sewage effluent volume control for pressurized sewage disposal system
04/12/1983USRE31204 Sprinkler flow control systems
02/1983
02/15/1983CA1141257A1 Method and system for controlling the fluid level in a drain tank
01/1983
01/25/1983US4370418 Liquid level control by subsurface draw off
12/1982
12/21/1982US4364790 Apparatus for making plaster board
12/01/1982EP0065847A1 Liquid level control
11/1982
11/09/1982CA1135364A1 Method and apparatus for measuring the degree of fullness of a mill driven by an electric motor
11/02/1982US4357131 Detector for controlling the operation of a suction pump
10/1982
10/12/1982US4354224 Manipulation-variable separated type system control method and apparatus
09/1982
09/07/1982CA1131277A1 Batch sensor for glass-melting furnaces
08/1982
08/24/1982US4345618 Arrangement for the regulation of the height of a liquid level
07/1982
07/06/1982CA1127266A1 Apparatus for controlling liquid level in a reservoir
06/1982
06/29/1982US4336825 Liquid level control system
06/15/1982US4334786 Process and mechanism for evolutive pulp flow regulation
06/08/1982CA1125143A1 Process and mechanism for evolutive pulp flow regulation
06/01/1982US4332507 Water level control system for a reservoir
05/1982
05/26/1982EP0052170A1 Liquefied-gas container
04/1982
04/20/1982US4325894 Thermistor, electromagnetic valve
04/13/1982CA1121875A1 Digital point level switch method and apparatus
03/1982
03/09/1982US4318674 Automatic liquid level controller
12/1981
12/08/1981US4304287 Flow cut-off method for foundry installations
12/01/1981US4303601 Ventilator humidifier
12/01/1981US4303406 Washing machine which monitors and adjusts water level after loading; programmable
11/1981
11/24/1981US4302288 Nuclear reactors
11/24/1981US4301824 Sump level maintenance system
11/03/1981US4298019 Method and system for controlling the fluid level in a drain tank
10/1981
10/27/1981US4297081 Liquid level control system
10/20/1981US4295793 Fluid sensitive switching controller
10/20/1981CA1110880A1 Thermally controlled oil storage reservoir for a transmission
10/06/1981US4292996 Stop valve
09/1981
09/22/1981US4291261 Electrical load control circuit useful in liquid level control systems
09/16/1981EP0035936A2 Method and apparatus to check the operation of a liquid-liquid extraction still
09/15/1981US4289451 External tank level control system
09/08/1981US4288263 Process for making plaster board
08/1981
08/18/1981US4284943 Apparatus and method for controlling the speed of an induction motor in a closed-loop system
08/18/1981US4284214 Method of continuous casting
07/1981
07/08/1981EP0031711A1 Method and system for controlling the fluid level in a drain tank
07/07/1981CA1104697A1 Level control for continuous casting
07/01/1981EP0030991A1 Industrial process control-system
06/1981
06/24/1981EP0030760A1 Device for regulating the flow of blood delivered by an extracorporeal circulation system, means for detecting a quantity of liquid and inductive element used in this device
06/02/1981US4271098 Carburetor for internal combustion engines
06/02/1981CA1102211A1 High pressure let down valve system
05/1981
05/05/1981US4265263 Non-linear level controller
05/05/1981US4265262 Fluent material level control system
04/1981
04/14/1981US4261382 Condensate drain valves
03/1981
03/31/1981US4258745 Control device for a liquid level maintaining system or the like
03/31/1981US4258444 Bath water level control system
03/24/1981US4257710 Continuous process mixing of pulverized solids and liquids and mixing apparatus
03/24/1981US4257437 Liquid flow control
02/1981
02/03/1981CA1095144A1 Dishwasher float switch control assembly
01/1981
01/13/1981US4244385 Fluent material level control system
01/06/1981US4242989 Boiler level control system
12/1980
12/30/1980US4242009 Apparatus for automatically and selectively discharging saline water
12/30/1980CA1092479A1 Apparatus and method for continuously monitoring and controlling the level of tar in a settling tank
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