| Patents for E03B 7 - Water main or service pipe systems (5,081) |
|---|
| 02/27/1991 | CN2072100U Three-pipe network system for supplying and draining water |
| 02/20/1991 | CN2071672U Tap water supply device capable of antifreezing and defreezing |
| 02/19/1991 | US4993260 Universal expansion connection and integral lock |
| 02/13/1991 | CN2071215U Self closing valve on water cut-off |
| 02/13/1991 | CN2071214U Insulation brick |
| 01/31/1991 | DE3924795A1 Fluid connection for water conduit components - consists of fluid coupling with parts sealed towards coupling axis |
| 01/22/1991 | US4986311 Apparatus for clearing frozen water lines |
| 01/16/1991 | CN2069441U Frostless device for running water pipe |
| 01/16/1991 | CN2069440U Automatic booster for running water pipeline |
| 01/10/1991 | DE3919074A1 Pure-water supply system - has insert in ring main reducing pressure with pipe connected |
| 12/26/1990 | CN2068111U Automatic stop valve for stopping water supply |
| 12/19/1990 | CN2067727U Sanitation valve for supplying water quantitatively |
| 12/18/1990 | US4977641 Lever handle assembly for sanitary fixtures |
| 12/04/1990 | US4974637 Self draining valve |
| 11/28/1990 | CN2066461U Water disposal device for mineral water shower |
| 11/28/1990 | CN2066460U Plastic water saving spray nozzle |
| 11/26/1990 | WO1990010817A1 Electric current heater for pipes |
| 11/26/1990 | CA2062738A1 Electric current heater for pipes |
| 11/21/1990 | CN2066039U Flow-limiting cold water tap |
| 11/14/1990 | EP0396696A1 Process for repairing an inaccessible domestic pipe using a remote-controlled device operating in the main. |
| 11/06/1990 | US4967780 Anti-freezing device |
| 10/31/1990 | CN2064784U Automatic locking device for cutoff water |
| 10/24/1990 | EP0256113B1 Fluid-flow isolation and control apparatus |
| 10/24/1990 | CN2064379U Equipment for air pressure fire protection and life-water supply |
| 10/10/1990 | CN2063540U Flow-limit and leak-proof device for tap water |
| 10/02/1990 | US4960260 Fluid restricting valve |
| 09/26/1990 | CN2062743U Filter for domestic tap water |
| 09/26/1990 | CN1045619A 自动回水阀 Automatic return valve |
| 09/25/1990 | CA1274444A1 Firestop stack fitting |
| 09/05/1990 | CN1045142A Sanitary accessories for taps |
| 09/04/1990 | US4953581 Self draining valve member for use in underground water lines |
| 08/28/1990 | CA1273329A1 Fluid-flow isolation and control apparatus and method |
| 08/22/1990 | CN2060790U Domestic and integral case type device with water clearing and mineralizing |
| 08/15/1990 | CA2008495A1 Incompressible fluid for leaks |
| 08/02/1990 | DE3902359A1 Device for dividing up a fluid flow |
| 07/25/1990 | CN1008934B Fluid flow isolation and control apparatus and method |
| 07/10/1990 | US4939931 Residential water meter with integral fire hydrant |
| 07/05/1990 | DE3844229A1 Devices for preventing the bursting/cracking/destruction of pipelines and/or pipe/container systems in the event of changes or fluctuations in temperature/volume/pressure |
| 06/12/1990 | US4932429 Screw stopper including anti-freeze device used for water pipe valve |
| 05/31/1990 | WO1990005874A1 Process for repairing an inaccessible domestic pipe using a remote-controlled device operating in the main |
| 05/30/1990 | CN2057678U Antifreezing unit for tap water |
| 05/29/1990 | US4928754 Heat exchanging apparatus |
| 05/29/1990 | US4928731 Aircraft toilet tank filling valve assembly |
| 05/23/1990 | CN2057429U Automatic simple device for supplying water |
| 05/01/1990 | US4921012 Automatic water shut-off apparatus for building protection |
| 04/04/1990 | CN2055510U Differential pressure self-close valve after water stop |
| 03/20/1990 | US4909270 Anti-siphon frost free faucet |
| 03/20/1990 | CA1266848A1 Spraying device having controlled additive fluid feed and a telescoping spray tube assembly |
| 03/01/1990 | DE3828907A1 Shut-off valve |
| 02/21/1990 | EP0354914A1 Heat exchanging apparatus. |
| 02/21/1990 | CN2053278U Antifreeze tap |
| 02/21/1990 | CN2053227U Household water saver |
| 01/17/1990 | EP0350485A1 A heating and insulation arrangement for a network of installed pipes and method. |
| 01/17/1990 | CN1038867A Temperature controlling valve device in pipe-line for conveying liquids |
| 01/10/1990 | EP0349575A1 Method of preventing freezing in pipes, and a piping system for carrying out the method. |
| 01/02/1990 | US4890638 Cover for backflow prevention device |
| 12/20/1989 | EP0347124A1 Apparatus and method for maintaining a minimum temperature for liquids in pipes |
| 12/14/1989 | WO1989012147A1 Thermostatic device for insertion in a liquid pipeline |
| 12/06/1989 | CN2048876U Apparatus with water saving and freeze-proof |
| 11/30/1989 | DE3816880A1 Pipe-string regulating valve |
| 11/28/1989 | US4883082 Temperature-responsive valve |
| 11/23/1989 | DE3908933A1 Distributor fitting for domestic-water installation |
| 10/25/1989 | CN2046514U Auto-valve for washing hand |
| 10/18/1989 | EP0337936A1 Domestic water station |
| 10/18/1989 | CN1036448A Pollution-preventing and quatity-limiting air supplementing method for air-supplemented pressure water-supply apparatus |
| 10/05/1989 | DE3910015A1 Process for protecting low-lying points and drainage locations in pipelines, vessels and the like against ice pressure |
| 10/03/1989 | US4871452 On-board water supply |
| 09/20/1989 | EP0332681A1 Improved firestop stack fitting |
| 09/13/1989 | CN2044262U Anti-frozen device for water pipe |
| 09/05/1989 | US4862744 Holder and shut off valve for a water flow control device |
| 08/23/1989 | CN2043252U 自动水阀 Automatic valves |
| 08/23/1989 | CN2043251U Automatic controller for stopping running water |
| 08/01/1989 | US4852601 Thermally-activated drip valve |
| 07/18/1989 | US4848389 Freeze protection device |
| 07/12/1989 | EP0243454B1 Backflow preventer apparatus for fluid flow lines |
| 07/12/1989 | CN2040924U Movable connecting wing convenient to plug hole for pipe passed through floorslab |
| 07/12/1989 | CN2040923U Pipe fitting convenient to plug hole of floorslab |
| 07/06/1989 | DE3744102A1 Frost protection for domestic water networks |
| 06/14/1989 | CN2039323U Film type dissipative muffler of water hammer |
| 06/13/1989 | US4839039 Automatic flow-control device |
| 06/07/1989 | CN2038920U Magnetizing emulsifying tap |
| 06/06/1989 | US4836237 Combination sillcock and leakage relief system |
| 05/24/1989 | DE3738231A1 Water-treatment system |
| 05/03/1989 | CN2036970U Antifreezing device for drain pipe |
| 04/18/1989 | US4821762 Freezeless wall faucet having removable cartridge |
| 04/12/1989 | EP0311595A1 Control handle for a sanitary valve |
| 04/11/1989 | US4819482 Device for connecting and supporting a water-meter |
| 04/05/1989 | CN2035360U Water storage device for water pipe system |
| 03/28/1989 | US4815491 Freeze protection device |
| 03/22/1989 | EP0307522A1 Apparatus for conducting hot gases from an exhaust pipe |
| 03/22/1989 | CN2034598U Preventing freezing device for efflux backwater |
| 03/08/1989 | CN2033833U Domestic water meter box |
| 03/08/1989 | CN2033832U Domestic water automatic controller |
| 03/07/1989 | US4809727 Thermally-activated drip valve |
| 03/01/1989 | EP0305293A1 Protection valve, particularly against frost damage, and protection method for a water-distribution plant against frost damage |
| 02/22/1989 | CN1031274A Valve for limiting of the rate of flow |
| 02/13/1989 | EP0258315A4 Fluid restrictor for a valve. |
| 02/09/1989 | WO1989001078A1 Improved firestop stack fitting |
| 02/08/1989 | CN2032213U Outflow device with sensing apparatus |
| 02/08/1989 | CN1030956A High reliable connection of loop network of water supply system |