| Patents for E03B 7 - Water main or service pipe systems (5,081) |
|---|
| 04/27/1994 | EP0593683A1 Monitor for growth and deposit. |
| 04/20/1994 | CN2162481Y Hand rotary frostbite water-plug |
| 04/19/1994 | US5303583 Meter boundary box |
| 03/31/1994 | DE4232774A1 Compound water meter with Woltmann counter - has main and small flow meters and automatic changeover valve operated by differential and spring press. |
| 03/29/1994 | US5297635 Combined alarm and back-flow prevention arrangement for fire suppression sprinkler system |
| 03/15/1994 | US5294780 Heating and insulation arrangement for a network of installed pipes and method |
| 02/23/1994 | CN2157229Y Frost-rpoof device for fixed time supply tap water pipe |
| 02/23/1994 | CN2157228Y Auto-controlled activated water producer |
| 02/22/1994 | US5287884 Water flow monitoring system for determining the presence of leaks and stopping flow in plumbing pipes |
| 02/22/1994 | US5287876 For preventing stagnation in a fluid distribution system |
| 02/17/1994 | DE4225950A1 Aircraft water supply system - has air valves and pressure store for easy and rapid drainage when aircraft is parked without heating supplies |
| 02/16/1994 | EP0582776A1 Stop valve for pipe conduit |
| 02/02/1994 | EP0581636A1 Flow rectifier for an expansion station and a metering device |
| 01/26/1994 | CN2154290Y Control apparatus for large-flow water supply equipment of leather making |
| 01/05/1994 | DE4321238A1 Combined direction valve and pressure reducer for processing drinking water - directs water supplies to filter with processed output passing to outlet via pressure reducer |
| 01/04/1994 | US5275192 Temperature sensitive device |
| 12/29/1993 | CN2151179Y Aid for preventing breakage from freeze |
| 12/29/1993 | CN1023344C Fluid feeding system |
| 12/28/1993 | US5273650 Ceramic filter |
| 12/22/1993 | CN2150247Y Anti-freezing device for running water pipe |
| 12/22/1993 | CN2150246Y Anti-freezing device for outside tap |
| 12/16/1993 | DE4219466A1 Reduction of water consumption in buildings - using pump and valves, to feed cold standing water in hot water pipes into cold water pipes |
| 12/15/1993 | EP0573980A1 Three-way cutoff unit particularly for sanitary distribution systems |
| 12/09/1993 | WO1993024670A1 Brass alloy |
| 12/09/1993 | CA2137135A1 Brass alloy |
| 12/07/1993 | US5267587 For a water or gas supply line |
| 11/24/1993 | EP0570959A2 Device for purifying drinking water |
| 11/24/1993 | CN1022851C High reliable conneciton of loop network of water supply system |
| 11/16/1993 | US5261444 Prefabricated water plumbing station |
| 11/11/1993 | DE4216571C1 Microbial build=up prevention in water circulation pipes - uses filtered water fed into pipe circuit to reduce microorganisms and metabolic unit to minimise microorganisms in the system |
| 11/11/1993 | DE4214994A1 Water sterilisation using UV-light - where UV-lamps are arranged above surface of water which is made to flow in wide flat stream over inclined floor of treatment chamber |
| 11/10/1993 | CN2145815Y Antifreezing device for water tap |
| 10/28/1993 | DE4213805A1 Magnetic arrangement for water treatment - produces strong water turbulence to prevent adherent scale deposition |
| 10/27/1993 | EP0566978A2 Use of a copper-aluminium-zinc alloy as corrosion resistant material |
| 10/14/1993 | WO1993020425A1 Utilities shutoff system |
| 10/13/1993 | EP0564741A1 Method and apparatus for repairing a pipeline |
| 10/08/1993 | CA2093458A1 Method and apparatus for repairing a pipeline |
| 09/30/1993 | DE4304954A1 Plastics fitting for tapping into plastic gas and water mains - has cutter bush that screws through sleeve insert to trepan hole in mains pipe and then functions as stop valve spool |
| 09/30/1993 | DE4209326A1 Testing dry supply columns, esp. in tall buildings, skyscraper etc. - measuring pressure difference at upper extraction point and lower feed point |
| 09/29/1993 | EP0563011A1 Domestic water installation |
| 09/29/1993 | EP0562706A2 Method of lining a pipe |
| 09/22/1993 | EP0561165A1 Device for treatment of pressurised water in water supply installations |
| 09/22/1993 | EP0396696B1 Process for repairing an inaccessible domestic pipe using a remote-controlled device operating in the main |
| 09/07/1993 | CA2062458A1 Environmental protection system for underground pipes |
| 08/31/1993 | US5240179 Anti-freeze assist apparatus |
| 08/31/1993 | US5240028 Temperature sensitive water supply shut-off system |
| 08/26/1993 | DE4305100A1 Holding tank for water from back-flushing of filter - has discharge pipe with water trap near top of tank and connecting pipe from filter back flush to tank |
| 08/19/1993 | DE4204344A1 Water meter mounting and integration system - has double walled carrier contg. water return line with sealing and clamping elements for altering meter inlet and outlet distances and is blockable with system valve |
| 07/22/1993 | WO1993014035A1 Apparatus for the oxidation of water |
| 07/20/1993 | US5228469 Fluid control system |
| 07/14/1993 | CN2138309Y Automatic water supply installation controlled by PLC |
| 07/13/1993 | US5226448 Freeze safety box organization |
| 07/08/1993 | WO1993012840A1 Combined alarm and backflow prevention arrangement for fire suppression sprinkler system |
| 07/08/1993 | DE4206333C1 Tap descaling device - has elastic fitting strip allowing simple attachment to tap outlet |
| 07/07/1993 | CN2137680Y Freezing-preventing water-saving device |
| 06/23/1993 | EP0547425A1 Strainer for water and waste water purification plant |
| 06/23/1993 | CN2136909Y Frost valve |
| 06/22/1993 | US5220937 Freeze buster |
| 06/15/1993 | US5218859 Method and apparatus for monitoring a conduit system for an incompressible fluid for leaks |
| 06/15/1993 | CA2085286A1 Screening installation for water and waste water treatment plants |
| 06/15/1993 | CA1319133C Thermostatic apparatus for liquid handling piping |
| 06/02/1993 | CN1072748A Automatic draining device with improved structure |
| 05/05/1993 | EP0427736B1 Thermostatic device for insertion in a liquid pipeline |
| 05/04/1993 | US5207533 Process and device for replacing an underground pipe |
| 04/29/1993 | WO1993008340A1 Fluid flow control system |
| 04/29/1993 | CA2121343A1 Fluid flow control system |
| 04/28/1993 | CN2130846Y Device for regulating pressure and limiting flow in pipeline |
| 04/22/1993 | DE4134307A1 Water turbulator for in-line plumbing - is made of non-ferrous material with screwed water throttling discs on supply and outlet pipes, supply pipe having jet |
| 04/20/1993 | CA1316521C Cover for water supply service box |
| 04/13/1993 | US5201338 System and device for flushing water mains |
| 04/06/1993 | US5199457 Leak detecting surface protector |
| 03/18/1993 | WO1993001497A3 Monitor for growth and deposit |
| 03/16/1993 | US5193587 Pipe thawing apparatus |
| 03/04/1993 | WO1993004309A1 Coupling and control arrangement for a fluid metering device |
| 02/17/1993 | EP0527545A2 Water piping system |
| 02/10/1993 | CN1068870A Device for running water tube |
| 02/04/1993 | DE4125839A1 Domestic supply system for house and building - has communal rooms with supply coupled to distributors having computer intelligence for control to meet demands |
| 01/26/1993 | US5181655 Mobile heating system |
| 01/21/1993 | WO1993001497A2 Monitor for growth and deposit |
| 01/21/1993 | CA2113339A1 Monitor for growth and deposit |
| 12/24/1992 | DE4226802A1 Injector for service water mixer - consists of injector, branches, and thermostatically controlled three way valve |
| 12/23/1992 | CN2125615U Nti-freezing device for water pipe |
| 12/22/1992 | CA1311736C Lever handle for sanitary valves |
| 12/16/1992 | CN2124956U Frost-proof device for running water pipe |
| 12/09/1992 | CN2124260U Water pipe pressure controlling device |
| 12/02/1992 | CN2123554U Pressure adjusting resistance automatic speed-changing water supply device |
| 11/25/1992 | CN2122888U Hand-pressure water suplly installation |
| 11/17/1992 | US5163779 In an underground irrigation system |
| 11/11/1992 | CN2121485U Automatic magnetic frostbite water supply unit |
| 11/10/1992 | US5161563 Fluid flow control system |
| 10/27/1992 | US5158105 Anti-siphon freezeless hydrant |
| 10/14/1992 | CN1065310A Fire-fighting and living dual-purpose automatic water supply equipment |
| 09/29/1992 | US5151175 System to automatically drain filter backwash water |
| 09/23/1992 | EP0505125A2 Water purifying apparatus |
| 09/15/1992 | US5147532 Domestic grey water purifier using diverter and UV filter treater with preheater |
| 09/09/1992 | EP0501989A1 Water tap. |
| 09/01/1992 | US5143346 Quick release water faucet joint |
| 08/23/1992 | WO1992014965A1 Piping system free of stagnation of fluid |
| 08/18/1992 | US5139044 Fluid control system |
| 08/12/1992 | CN1063519A Circulatory antifreezing valve |