WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

E03B　INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)

E03B 1/00 Methods or layout of installations for water supply(E03B 3/00, E03B 9/00 take precedence)

E03B 1/02 ・for public or like main supply {for industrial use}

E03B 1/04 ・for domestic or like local supply

E03B 1/041 ・・{Greywater supply systems}

E03B 1/042 ・・・{Details thereof, e.g. valves or pumps}

E03B 1/044 ・・・・{Switch valves in waste pipes}

E03B 1/048 ・・{Systems for collecting not used fresh water}

E03B 3/00 Methods or installations for obtaining or collecting drinking water or tap water (treatment of water C02F)

E03B 3/02 ・from rain-water

E03B 3/03 ・・Special vessels for collecting or storing rain-water for use in the household, e.g. water-butts {(containers for storage, in general, B65D)}

E03B 3/04 ・from surface water {Barrages E02B 7/00}

E03B 3/06 ・from underground {consolidating foundation soil by draining, e.g. by lowering the water level E02D 3/00; subsoil filtering E21B 43/02}

E03B 3/08 ・・Obtaining and confining water by means of wells (applicable to a combination of water and other liquids or to other liquids only E21B 43/00)

E03B 3/10 ・・・by means of pit wells

E03B 3/11 ・・・・in combination with tubes, e.g. perforated, extending horizontally, or upwardly inclined, exterior to the pits

E03B 3/12 ・・・by means of vertical pipe wells

E03B 3/14 ・・・by means of horizontal or oblique wells

E03B 3/15 ・・・Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers (with artificial enrichment E03B 3/32){(cleaning, in general B08B)}

E03B 3/16 ・・・Component parts of wells

E03B 3/18 ・・・・Well filters (filters in general B01D 24/00 to B01D 35/00)

E03B 3/20 ・・・・・of elements of special shape

E03B 3/22 ・・・・・・Selection of specified materials {not used, documents in E03B 3/20}

E03B 3/24 ・・・・・formed of loose materials, e.g. gravel

E03B 3/26 ・・・・・・with packed filtering material

E03B 3/28 ・from humid air (condensing of vapours in general B01D 5/00; dehumidification of air for air-conditioning F24F 3/14)

E03B 3/30 ・from snow or ice

E03B 3/32 ・with artificial enrichment, e.g. by adding water from a pond or a river {consolidating foundation soil by draining e.g. by lowering the water level E02D 3/00}

E03B 3/34 ・・of underground water

E03B 3/36 ・・of surface water

E03B 3/38 ・Curbs for springs

E03B 3/40 ・Other devices for confining, e.g. trenches, drainage

E03B 5/00 Use of pumping plants or installations; Layouts thereof (pumps; pumping plants or installations per se F04)

E03B 5/02 ・arranged in buildings

E03B 5/025 ・・{with surface tanks}

E03B 5/04 ・arranged in wells

E03B 5/045 ・・{with surface tanks}

E03B 5/06 ・・Special equipment, {e.g. well seals and connections for well casings or the like}

E03B 7/00 Water main or service pipe systems (pipes or tubes in general F16L)

E03B 7/003 ・{Arrangement for testing of watertightness of water supply conduits}

E03B 7/006 ・{Arrangements or methods for cleaning or refurbishing water conduits}

E03B 7/02 ・Public or like main pipe systems

E03B 7/04 ・Domestic or like local pipe systems (domestic plumbing E03C 1/02)

E03B 7/045 ・・{diverting initially cold water in warm water supply}

E03B 7/07 ・Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems (devices per se, see the relevant classes for these devices)

E03B 7/071 ・・{Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off}

E03B 7/072 ・・{Arrangement of flowmeters}

E03B 7/074 ・・{Arrangement of water treatment devices}

E03B 7/075 ・・{Arrangement of devices for control of pressure or flow rate}

E03B 7/077 ・・{Arrangement of backflow preventing devices}

E03B 7/078 ・・{Combined units with different devices; Arrangement of different devices with respect to each other}

E03B 7/08 ・・Arrangement of draining devices, {e.g. manual shut-off valves}(draining devices in general F16K, F16L)

E03B 7/09 ・Component parts or accessories (tools for cleaning pipes B08B 9/02; devices for preventing contamination of drinking water pipes for domestic use E03C 1/10; devices for preventing damage in case of bursts of pipes F16L; heating of pipes in general F16L 53/00)

E03B 7/095 ・・{Component holders or housings, e.g. boundary boxes}

E03B 7/10 ・・Devices preventing bursting of pipes by freezing (devices preventing bursting of pipes in general F16L 55/00)

E03B 7/12 ・・・by preventing freezing

E03B 7/14 ・・Devices for thawing frozen pipes

E03B 9/00 Methods or installations for drawing-off water (domestic water-drawing devices E03C; taps or valves per se F16K)

E03B 9/02 ・Hydrants; Arrangements of valves therein; Keys for hydrants

E03B 9/025 ・・{Taps specially designed for outdoor use, e.g. wall hydrants, sill cocks}

E03B 9/027 ・・・{with features preventing frost damage}

E03B 9/04 ・・Column hydrants

E03B 9/06 ・・・Covers

E03B 9/08 ・・Underground hydrants

E03B 9/10 ・・・Protective plates or covers

E03B 9/12 ・・・Stand-pipes

E03B 9/14 ・・Draining devices for hydrants

E03B 9/16 ・・Devices for retaining foreign matter, e.g. sand

E03B 9/18 ・・Cleaning tools for hydrants

E03B 9/20 ・・Pillar fountains or like apparatus for dispensing drinking water

E03B 11/00 Arrangements or adaptations of tanks for water supply (water-butts E03B 3/03; storage aspects B65D, B65G, F17B, F17C; foundations E02D 27/38; construction or assembling of bulk storage containers employing civil engineering techniques E04H 7/00; tower aspects E04H 12/00)

E03B 11/02 ・for domestic or like local water supply

E03B 11/04 ・・without air regulators {i.e. without air inlet or outlet valves; water tanks provided with flexible walls}

E03B 11/06 ・・with air regulators {air receivers for water conduits F16L 55/04; pressure control devices for fluids G05D}

E03B 11/08 ・・・Air regulators

E03B 11/10 ・for public or like main water supply

E03B 11/12 ・・of high-level tanks

E03B 11/14 ・・of underground tanks

E03B 11/16 ・・Adaptations of devices for putting pumping plants in and out of operation, e.g. automatic control devices {not used, documents in F04}

E03B 2001/00 Methods or layout of installations for water supply(E03B 3/00, E03B 9/00 take precedence)

E03B 2001/04 ・for domestic or like local supply

E03B 2001/041 ・・{Greywater supply systems}

E03B 2001/045 ・・・using household water

E03B 2001/047 ・・・using rainwater

E03B 2009/00 Methods or installations for drawing-off water (domestic water-drawing devices E03C; taps or valves per se F16K)

E03B 2009/02 ・Hydrants; Arrangements of valves therein; Keys for hydrants

E03B 2009/022 ・・Hydrants with a tubular valve seat

E03B 2011/00 Arrangements or adaptations of tanks for water supply (water-butts E03B 3/03; storage aspects B65D, B65G, F17B, F17C; foundations E02D 27/38; construction or assembling of bulk storage containers employing civil engineering techniques E04H 7/00; tower aspects E04H 12/00)

E03B 2011/005 ・Tanks with two or more separate compartments divided by e.g. a flexible membrane