Patents
Patents for G05D 9 - Level control, e.g. controlling quantity of material stored in vessel (4,688)
11/1994
11/22/1994US5365783 Capacitive sensing system and technique
11/08/1994US5363471 Electrode boilers with cylinder full sensor control
11/02/1994EP0544787B1 Method for controlling the level of solvent vapor in a vessel
10/1994
10/27/1994WO1994024619A1 Level control switch
10/26/1994CN2181020Y Multi-function water pump level automatic controller
10/25/1994US5358003 Method and apparatus for maintaining level of water in above-ground swimming pools
10/19/1994CN2179982Y Totally-enclosed contactless level controller
10/18/1994CA2012195C Method and apparatus for filling tubes
10/13/1994DE4311737A1 Method and device for continuous measurement of sedimentation or flotation rates
10/04/1994US5352415 Control system for acetic acid manufacturing process
10/04/1994US5351725 System for monitoring fills of liquid in a tank container and ongoing liquid condition
09/1994
09/28/1994CN2178364Y Automatic controller for liquid supply and discharge
09/27/1994US5349994 Control system for filling tanks with liquids
09/21/1994EP0616277A2 Water level regulating system
09/14/1994CN1092036A Liquid supply control arrangement
09/13/1994CA2054380C Liquid level control with capacitive sensors
09/07/1994EP0614135A1 Liquid dispensing reservoir having a flow rate that is independent of the liquid level
09/07/1994EP0613855A1 Bottling machine for transparent containers
09/07/1994EP0613545A1 Process for setting, controlling and monitoring the level in a refrigerant evaporator.
09/07/1994CN2176561Y Multifunctional and automatic water level controller
09/01/1994DE4343750A1 Drink filler with froth control
09/01/1994DE4305924A1 Device for detecting the overfilling of an overflow channel for liquids
08/1994
08/23/1994US5339854 Conservation system and method
08/18/1994DE4304435A1 Safety mechanism against overfilling for light-liquid separators
08/17/1994CN2174726Y Electronic automatic controlling device for water level
08/11/1994DE4402975A1 Failure monitoring device of a water feed system of an electrical household appliance
08/10/1994EP0609377A1 Method and apparatus for controlling liquid level in a knot drainer
08/09/1994US5336054 Automatic water shut-off dispensers
08/09/1994US5335704 Pasteurized to raw liquid processing system
08/02/1994US5335185 Automatic level control system and method
07/1994
07/21/1994DE4333666C1 Arrangement for determining optically visible phase boundaries in liquids
07/20/1994CN2172492Y Pressure contrast automatic water controller
07/13/1994CN1089373A Self-regulating controller for liquid level
07/06/1994CN2171132Y Level adjusting device for strong solution discharging box of lithium cold/warm water machine generator
06/1994
06/29/1994EP0549603B1 Safety device for domestic appliances through which water flows
06/22/1994EP0602604A1 Vacuum Valve
06/22/1994CN2169871Y Buoyancy automatic switch water saving device
06/21/1994US5322198 Pump-equipped liquid supply system
06/15/1994EP0601867A1 Liquid supply control arrangement
06/15/1994CN2169154Y Electric dosage adjuster for liquid media
06/07/1994US5319172 Microwave melting furnace for treating liquid
05/1994
05/24/1994US5314313 Water-sensing alarm for water-control systems
05/24/1994CA1329753C Liquid level control system
05/18/1994CN2165428Y Supersonic charge level monitor for uncharging for cement shaft kiln
05/17/1994US5312594 Sewage treatment apparatus
05/11/1994EP0596863A1 Portable product refill tank unit
05/10/1994US5310087 Continuous feed, chemical switching unit
05/10/1994US5309939 Safety device for water-conducting household appliances
05/04/1994CN2164059Y Water-storage level self controller for tap water containers
05/04/1994CN2164058Y Microcomputer-control liquid quantitative filling device
05/03/1994US5308504 Pumps and detectors for flow control systems
04/1994
04/26/1994US5305779 Method, system, and apparatus for operating large power generating stations with improved environmental protection measures
04/20/1994CN1024301C Central monitoring & automatic control system for water supply tank in high building
04/14/1994DE4233843A1 Filling bottles or similar containers with liquid - involves measuring bottle shape or related dimension to eliminate shrinkage errors
04/13/1994CN2161945Y Telescoping type controller for water level
04/13/1994CN1024225C Multifunctional liquid level long-range controller
04/07/1994DE4233371A1 Measuring flow of waste water through non-siphoned waste water pipe - operating magnetic=inductive sensor with motorised choke dependent on water level in upstream chamber or channel
03/1994
03/24/1994DE4231235A1 Integrating rainfall gauge with memory and periodic drain valve - stores and integrates value of output from level sensor prior to each emptying operation on small collector
03/24/1994DE4231046A1 Storage tank for liquid esp. for IC engine lubrication oil - has filling connection with filler cap closable according to filling level in tank
03/15/1994US5293896 Arrangement for measuring the level of liquified gases
03/03/1994WO1994004971A1 Liquid level control device
03/01/1994US5289846 Automatic liquid replenishing system
02/1994
02/23/1994CN2157536Y Float level controller
02/17/1994DE4227020A1 Connection unit with automatic fresh water feed - supplies fresh water only when cistern level is insufficient
02/16/1994CN2156532Y Float force gravity hammer type liquid level controller
02/16/1994CN2156531Y Liquid level automatic controller
02/16/1994CN2156530Y Mine pulp trough liquid level automatic adjuster for filtering machine
02/15/1994US5287086 Proximity detection system and oscillator
02/15/1994US5285653 Refrigerant flow control device
02/02/1994CN2155036Y Water level controller with automatic feeding water
01/1994
01/27/1994DE4305390C1 Fluid container with controlled feed chamber - incorporates rise pipe, overflow connection and freely movable rod connected to float and closure piston
01/13/1994DE4222240A1 Washing machine inlet valve calibration - using separate measurement for the flow vol. and trickle flow vol.
01/12/1994CN2153083Y 多功能控制器 Multi-function controller
01/05/1994CN2152233Y Magnetic water level controller
12/1993
12/22/1993CN2150578Y Float-ball liquid-level controller
12/22/1993CN2150577Y Multipurpose automatic controller for liquid level
12/15/1993CN2149652Y Computerized liquid level controlling means
12/08/1993EP0572886A1 Flow regulator for the outlet of a liquid container
11/1993
11/24/1993CN2147572Y 水位控制器 Water Level Controller
11/24/1993CN2147571Y 微电脑液位控制器 Micro-level controller
11/18/1993EP0569728A1 Liquid supply apparatus
11/17/1993CN2146732Y Microdifferential level controller
11/11/1993DE4214768A1 Measuring, monitoring and controlling appts. for liq. level in container, esp. engine sump - has two lines connecting sump to reservoir container, one line with controlled valve opened after engine has stopped
11/10/1993CN2146023Y Level self-control alarm
11/10/1993CN2146022Y Wholly-enclosed level controller
11/10/1993CN2146021Y Electromechanical Stock level controller
11/10/1993CN1022716C Float bowol hammer left-right circuit switch device
11/03/1993CN2145401Y Automatic controllor for water lever
11/02/1993US5258146 Method of and apparatus for measuring and controlling fluid level in stereolithography
10/1993
10/27/1993CN2144830Y Electronic self-closing device for water fulling
10/27/1993CN2144829Y Liquid level control switch
10/21/1993DE4212688A1 Controlling water supply and discharge in washing machines - by measuring waste water quality and recycling water if appropriate
10/20/1993CN2144321Y Automatic controller for liquid level
10/19/1993US5253374 Method and apparatus for maintaining level of water in above-ground swimming pools
10/05/1993US5249431 Residual coolant sensor for air conditioning system
09/1993
09/29/1993CN2142979Y Alarm controller of capacitor-type for tumbrel liquid level not contacted with each other
09/29/1993CN2142978Y Automatic controller for liquid level
09/29/1993CN2142675Y Cup for blind person
09/28/1993US5247710 Reservoir level control system
09/23/1993DE4220642A1 Arrangement for automatic control of outflow of liquid of given density e.g. for compression refrigerator - contains housing with float operated denser liquid outlet opening and closing
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