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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)
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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
}
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E03B 1/04
.
for domestic or like local supply
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E03B 1/041
. .
{
Greywater supply systems
}
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E03B 1/042
. . .
{
Details thereof, e.g. valves or pumps
}
E03B 1/044
. . . .
{
Switch valves in waste pipes
}
E03B 2001/045
. . .
{
using household water
}
E03B 2001/047
. . .
{
using rainwater
}
E03B 1/048
. .
{
Systems for collecting not used fresh water
}
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Methods or installations for obtaining or collecting drinking water or tap water (treatment of water C02F)
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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
}
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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
}
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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)
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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)
}
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E03B 3/16
. . .
Component parts of wells
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E03B 3/18
. . . .
Well filters (filters in general B01D 24/00 to B01D 35/00)
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E03B 3/20
. . . . .
of elements of special shape
E03B 3/22
. . . . . .
Selection of specified materials
{
not used, documents in E03B 3/20
}
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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
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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
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Use of pumping plants or installations; Layouts thereof (pumps; pumping plants or installations per se F04)
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E03B 5/02
.
arranged in buildings
E03B 5/025
. .
{
with surface tanks
}
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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
}
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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
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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
}
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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)
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.
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
}
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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
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Methods or installations for drawing-off water (domestic water-drawing devices E03C; taps or valves per se F16K)
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E03B 9/02
.
Hydrants; Arrangements of valves therein; Keys for hydrants
E03B 2009/022
. .
{
Hydrants with a tubular valve seat
}
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E03B 9/025
. .
{
Taps specially designed for outdoor use, e.g. wall hydrants, sill cocks
}
E03B 9/027
. . .
{
with features preventing frost damage
}
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E03B 9/04
. .
Column hydrants
E03B 9/06
. . .
Covers
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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
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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
}
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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
}
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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
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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
}
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013