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HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F)
Definition statement
This subclass/group covers:

Man-made devices for using or controlling natural bodies of water;

Artificial bodies of water.

Equipment or apparatus for, or methods of, general hydraulic engineering, {e.g. protection of constructions against ice-strains (protection of offshore constructions against ice-loads E02B 17/0021; ice-structures as artificial islands E02B 17/028) }
Definition statement
This subclass/group covers:

Big scale hydraulic projects for controlling water or water level (groundwater, seawater, rivers, lakes) and small scale models for such projects.

Methods and devices relating to use or control of ice, e.g. protection against ice strains or use of ice formation.

Small-scale models for modelling big scale projects.

References relevant to classification in this group
This subclass/group does not cover:
Protection of offshore constructions against ice-loads
Ice-structures as artificial islands
Computer-models of water flow
Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites (barrages or weirs E02B 7/00) ; Sealing or joints for engineering works in general
Definition statement
This subclass/group covers:

Protecting, maintaining or preparing waterways or the border between water and land for use.

Relationship between large subject matter areas

Garden ponds per se are classified in A01K 63/00, the constructional features of ponds are classified in E02B 3/00.

References relevant to classification in this group
This subclass/group does not cover:
Methods or apparatus for dredging
Drilling
Barrages or weirs
Informative references
Attention is drawn to the following places, which may be of interest for search:
Garden ponds
Foundations under water or at the border between land and water
Structures or apparatus for, or methods of, protecting banks, coasts, or harbours (sealings or joints E02B 3/16; {E02B 1/003 takes precedence} )
Definition statement
This subclass/group covers:

Structures for protection against beach erosion, in general not completely submerged, but close to shoreline;

Flood protection devices.

References relevant to classification in this group
This subclass/group does not cover:
Artificial reefs specially adapted to fish farming
Sealings or joints
Flood protection for buildings
Flood protection for building openings
Informative references
Attention is drawn to the following places, which may be of interest for search:
Breakwaters, which may be similar in construction and effect, but are generally completely submerged in use
Sand bags
Special rules of classification within this group

Protection by mechanically induced liquid or gas streams is classified in E02B 1/003 and takes precedence.

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

In this group, the following term are used with the meaning indicated:

Quay wall
fixed construction forming the coast line for mooring boats
Groyne
breakwater perpendicular to coast line
Breakwater
construction for coast protection, generally positioned underwater
Pier
fixed construction on pillars perpendicular to coast line
Mole
massive construction perpendicular to coast line
Revetment of banks, dams, water-courses, or the like, {e.g. the sea-floor} (of slopes in general E02D 17/20)
Definition statement
This subclass/group covers:

Devices for covering water borders or the sea floor for protection.

Relationship between large subject matter areas

Revetment of slopes for other purposes, e.g. roadsides, are classified in E02D.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Gabions in general
Gabions with vegetation for sound protection
Placing concrete under water
Special rules of classification within this group

Methods are classified in the group of the corresponding product.

Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards (tying-up, anchoring B63B 21/00, e.g. bollards for shipping B63B 21/06; buoys B63B 22/00; { equipment specially adapted for use in locks or dry docks E02C 1/10} )
Definition statement
This subclass/group covers:

Devices on shore or fixed in the water for accommodating ships.

References relevant to classification in this group
This subclass/group does not cover:
Similar devices mounted on ships
Anchoring of ships
Buoys
Equipment specially adapted for use in locks or dry docks
Informative references
Attention is drawn to the following places, which may be of interest for search:
Net barriers for harbour defence
Access bridges for ships
Bollards
Artificial water canals, { e.g. irrigation canals} (for water-power plants E02B 9/02; irrigation of soil E02B 13/00)
Definition statement
This subclass/group covers:

Constructional aspects of canals, e.g. irrigation canals or water traffic canals.

References relevant to classification in this group
This subclass/group does not cover:
Water ways for water power plants
Irrigation of soil
Informative references
Attention is drawn to the following places, which may be of interest for search:
Placing concrete under water
Details, e.g. gates, screens
Definition statement
This subclass/group covers:

Devices used in free flow canals for enhancing usability of the canal.

References relevant to classification in this group
This subclass/group does not cover:
Mechanical filtering in general
Arresting devices with endlessly moving parts
Arresting devices with Archimedean screw
{Arresting devices for waterborne materials, e.g. gratings (fish barrages E02B 1/006; removing sediments E02B 3/023; arresting oil or similar polluants E02B15/04B; for waste water purification E02F; in sewers E03F 5/14) }
Definition statement
This subclass/group covers:

Gratings without moving parts for separating solid materials from water or sewage.

Barrages or weirs; Layout, construction, methods of, or devices for, making same (for protecting banks, coasts, or harbours E02B 3/04; sealings or joints E02B 3/16; handling building or like materials for hydraulic engineering E02D 15/00; foundations in general E02D 27/00)
Definition statement
This subclass/group covers:

Devices placed perpendicularly to stream direction for controlling or temporarily interrupting water flow.

References relevant to classification in this group
This subclass/group does not cover:
High water or flood control devices alongside the river bank
Devices for protection of coasts, banks or harbours
Sealings or joints specially adapted for hydraulic engineering
Foundations in general
Informative references
Attention is drawn to the following places, which may be of interest for search:
Making embankments
Handling material for hydraulic engineering
Special rules of classification within this group

E02B 7/205: automatically functioning barrages, the automatic functioning being essential. Those devices are also classified in the respective subclass E02B7/20C-E20B7/50 relating to their form.

Details of barrages or weirs (cleaning or keeping clear the surface of open water E02B 15/00) ; {Energy dissipating devices carried by lock or dry-dock gates}
Definition statement
This subclass/group covers:

Subparts of barrages or of the water body created by a barrage, devices for maintaining functioning of barrage or body of water; e.g. energy dissipating devices carried by lock or dry-dock gates.

References relevant to classification in this group
This subclass/group does not cover:
Cleaning or keeping clear the surface of open water
Removing sediments from natural waterways
Informative references
Attention is drawn to the following places, which may be of interest for search:
Filters with moving filtering elements
Devices for removing solid materials from water using archimedian screws for transporting the removed material out of the canal
Special rules of classification within this group

Devices for controlling sedimentation within flowing water, devices for removing sediments from bodies of water behind barrages are classified in E02B 8/02.

Filtering devices for water and sewage having endlessly moving parts are classified in E02B 8/026.

Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
Definition statement
This subclass/group covers:

Constructional aspects of water power plants and their related water bearing parts.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Hydraulic motors
Power stations with machines or engines for liquid
Special rules of classification within this group

Documents with details of means for energy production should also to be classified in subclass F03B.

Drainage of soil, e.g. for agricultural purposes { (draining sports grounds E01C 13/083; for consolidating foundation soil, e.g. sand drain piles E02D 3/10) }
Definition statement
This subclass/group covers:

Methods and devices for horizontal drainage of ground in general.

References relevant to classification in this group
This subclass/group does not cover:
Improving or stabilising soil by managing underground water flow
Drainage of sewage into the ground
Informative references
Attention is drawn to the following places, which may be of interest for search:
Perforated pipes for irrigation
Draining sports grounds
Constructional features of pipes, pipe-laying
Irrigation ditches, i.e. gravity flow, open channel water distribution systems ( { retaining waterborne material in irrigation canals E02B 5/085} ; other distribution systems for watering or spraying gardens, fields, sports grounds, or the like, A01G 25/00; { built-in irrigation means for sports grounds E01C 13/083} )
Definition statement
This subclass/group covers:

Open free flow water channels for irrigation;

Devices for sequential water distribution, e.g. between several irrigation channels or seepage drains.

References relevant to classification in this group
This subclass/group does not cover:
Other irrigation methods and systems, e.g. for agriculture, horticulture
Built-in irrigation systems for sports fields
Retaining waterborne material in irrigation canals
Open sewage channels
Informative references
Attention is drawn to the following places, which may be of interest for search:
Retaining waterborne material in irrigation canals
Cleaning or keeping clear the surface of open water; Apparatus therefor (construction of ships or other waterborne vessels B63B, e.g. vessels specially adapted for collecting pollution from open water B63B 35/32; in swimming or splash baths or pools E04H 4/16)
Definition statement
This subclass/group covers:

Floating barriers and devices for controlling and/or collecting oil pollution on open water surfaces, e.g. sea, harbours, lakes, rivers).

References relevant to classification in this group
This subclass/group does not cover:
Separation in general
General constructional aspects of waterborne vessels
Emptying sunken ships
B63C7/16B
Covering oil spills on well heads
Informative references
Attention is drawn to the following places, which may be of interest for search:
Constructional features of waterborne vessels specially adapted for collecting pollution from open water
Cleaning of water in swimming or splash baths or pools
Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs { or offshore constructions} ; construction methods therefor ( { construction methods for floating platforms B63B 9/065} ; anchoring floating platforms B63B 21/00; floating platforms, e.g. anchored, B63B 35/44; { underwater reservoirs B65D 88/78} )
Definition statement
This subclass/group covers:

Constructional features of ground-based offshore constructions;

Method for their installation or removal.

References relevant to classification in this group
This subclass/group does not cover:
Construction methods for floating platforms
Anchoring floating platforms
Floating or semi-submersible offshore platforms
Constructional features of underwater reservoirs
Informative references
Attention is drawn to the following places, which may be of interest for search:
Subsea foundations
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Last Modified: 10/11/2013