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

CPC
COOPERATIVE PATENT CLASSIFICATION
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PERMANENT WAY ; PERMANENT-WAY TOOLS ; MACHINES FOR MAKING RAILWAYS OF ALL KINDS ( derailing or rerailing blocks on track, track brakes or retarders B61K )
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Guide Heading:
Structure of the permanent way for railways or tramways
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Ballastway ; Other means for supporting the sleepers or the track ; Drainage of the ballastway ( draining by trenches, culverts, or conduits E01F 5/00 )
E01B 1/001
.
{
Track with ballast
}
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E01B 1/002
.
{
Ballastless track, e.g. concrete slab trackway, or with asphalt layers
}
E01B 1/004
. .
{
with prefabricated elements embedded in fresh concrete or asphalt
}
E01B 1/005
. .
{
with sleeper shoes
}
E01B 1/007
. .
{
with interlocking means to withstand horizontal forces
}
E01B 1/008
.
{
Drainage of track
}
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General structure of permanent way ( railway networks B61B 1/00 ; foundations for pavings E01C 3/00 ; foundations in general E02D )
E01B 2/003
.
{
Arrangement of tracks on bridges or in tunnels
}
E01B 2/006
.
{
Deep foundation of tracks
}
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Transverse or longitudinal sleepers ( for switches or crossings E01B 7/22 ) ; Other means resting directly on the ballastway for supporting rails
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E01B 3/02
.
made from wood ( drying or impregnating B27K )
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E01B 3/04
. .
Means for preventing cleaving
E01B 3/06
. . .
Anti-cracking dogs
E01B 3/08
. . .
Straps or bands for hooping or encircling sleepers ( apparatus for hooping wooden railway sleepers on the spot E01B 31/28 )
E01B 3/10
. .
Composite sleepers
E01B 3/12
. .
Longitudinal sleepers ; Longitudinal sleepers integral or combined with tie-rods ; Combined longitudinal and transverse sleepers
E01B 3/14
. .
Slabs ; Blocks ; Fastening tie-rods to them
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E01B 3/16
.
made from steel
E01B 3/18
. .
Composite sleepers
E01B 3/20
. .
Sleeper construction for special purposes, e.g. with openings for ballast working ( sleepers for shiftable track for heavy loads E01B 23/12 )
E01B 3/22
. .
Longitudinal sleepers ; Longitudinal sleepers integral or combined with tie-rods ; Combined longitudinal and transverse sleepers
E01B 3/24
. .
Slabs ; Blocks ; Pot sleppers ; Fastening tie-rods to them
E01B 3/26
. .
combined with inserts of wood artificial stone or other material
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E01B 3/28
.
made from concrete or from natural or artificial stone ( manufacture B28 )
E01B 3/30
. .
Hollow sleepers
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E01B 3/32
. .
with armouring or reinforcement ( hollow sleepers E01B 3/30 )
E01B 3/34
. . .
with pre-tensioned armouring or reinforcement ( pre-tensioned armouring or reinforcing elements E04C 5/00 )
E01B 3/36
. .
Composite sleepers
E01B 3/38
. .
Longitudinal sleepers ; Longitudinal sleepers integral or combined with tie-rods ; Combined longitudinal and transverse sleepers ; Layers of concrete supporting both rails
E01B 3/40
. .
Slabs ; Blocks ; Pot sleepers ; Fastening tie-rods to them
E01B 3/42
. .
combined with inserts of wood or other material
E01B 3/44
.
made from other materials only if the material is essential
E01B 3/46
.
made from different materials ( E01B 3/26 , E01B 3/42 take precedence )
E01B 3/48
.
Distance keepers or tie-rods for sleepers
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Rails ; Guard rails ( manufacture of rails B21B ) ; Distance-keeping means for them
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E01B 5/02
.
Rails
E01B 5/04
. .
Grooved rails
E01B 5/06
. .
Reversible or invertible rails
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E01B 5/08
. .
Composite rails ; Compound rails with dismountable or non-dismountable parts
E01B 5/10
. . .
Composite grooved rails ; Inserts for grooved rails
E01B 5/12
. .
Rails with a foot serving as a sleeper
E01B 5/14
. .
Rails for special parts of the track, e.g. for curves
E01B 5/16
.
Distance keepers
E01B 5/18
.
Guard rails ; Connecting, fastening or adjusting means therefor
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Switches ; Crossings ( operating mechanisms B61L )
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E01B 7/02
.
Tongues ; Associated constructions
E01B 7/04
. .
Constructions with tongues turning about a vertical pivot at the end
E01B 7/06
. .
Constructions with flexible tongues or flexible fishplates
E01B 7/08
. .
Other constructions of tongues, e.g. tilting about an axis parallel to the rail, movable tongue blocks or rails
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E01B 7/10
.
Frogs
E01B 7/12
. .
Fixed frogs made of one part or composite
E01B 7/14
. .
with movable parts
E01B 7/16
. .
Jump-over frogs
E01B 7/18
.
Combinations of switches and crossings
E01B 7/20
.
Safety means for switches, e.g. switch point protectors, auxiliary or guiding rail members
E01B 7/22
.
Special sleepers for switches or crossings ; Fastening means therefor
E01B 7/24
.
Heating of switches
E01B 7/26
.
Lubricating of switches ( lubricating of rails B61K 3/00 )
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E01B 7/28
.
Crossings
E01B 7/30
. .
Jump-over crossings
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Fastening rails on sleepers, or the like ( fastening rails to bridges E01D 19/12 )
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.
Fastening rails, tie-plates, or chairs directly on sleepers or foundations ; Means therefor
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E01B 9/04
. .
Fastening on wooden or concrete sleepers or on masonry without clamp members
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E01B 9/06
. . .
Railways spikes ( nails in general F16B )
E01B 9/08
. . . .
Elastic spikes
E01B 9/10
. . .
Screws or bolts for sleepers ( screws or bolts in general F16B )
E01B 9/12
. . .
Retaining or locking devices for spikes or screws
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E01B 9/14
. . .
Plugs, sleeves, thread linings, or other inserts for holes in sleepers ( inserting plugs or sleeves E01B 31/26 )
E01B 9/16
. . . .
for wooden sleepers
E01B 9/18
. . . .
for concrete sleepers
E01B 9/20
. . .
by keys
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E01B 9/22
. .
Fastening on steel sleepers without clamp members
E01B 9/24
. . .
by keys
E01B 9/26
. . .
Welded fastenings
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E01B 9/28
. .
Fastening on wooden or concrete sleepers or on masonry with clamp members
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E01B 9/30
. . .
by resilient steel clips
E01B 9/303
. . . .
{
the clip being a shaped bar
}
E01B 9/306
. . . .
{
the clip being a shaped plate
}
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E01B 9/32
. .
Fastening on steel sleepers with clamp members
E01B 9/34
. . .
by resilient steel clips
E01B 9/36
. .
Metal sole-plates for rails which rails are directly fastened to sleepers
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E01B 9/38
.
Indirect fastening of rails by using tie-plates or chairs ; Fastening of rails on the tie-plates or in the chairs
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E01B 9/40
. .
Tie-plates for flat-bottom rails ( manufacture B21 )
E01B 9/42
. . .
of two or more parts
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E01B 9/44
. .
Fastening the rail on the tie-plate
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E01B 9/46
. . .
by clamps
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E01B 9/48
. . . .
by resilient steel clips
E01B 9/483
. . . . .
{
the clip being a shaped bar
}
E01B 9/486
. . . . .
{
the clip being a shaped plate
}
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E01B 9/50
. . .
by keys
E01B 9/52
. . . .
by resilent keys
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E01B 9/54
. .
Rail chairs
E01B 9/56
. . .
for rails with two or more treads
E01B 9/58
. .
Fastening the rail in the chair
E01B 9/60
.
Rail fastenings making use of clamps or braces supporting the side of the rail
E01B 9/62
.
Rail fastenings incorporating resilient supports
E01B 9/64
.
Rail fastenings gripping or encircling the sleeper
E01B 9/66
.
Rail fastenings allowing the adjustment of the position of the rails, so far as not included in the preceding groups
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E01B 9/68
.
Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
NOTE
-
If the subject to be classified has more than one characteristic, classification is made in group E01B 9/68 and indexing codes for the different characteristics are given

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E01B 9/681
. .
{
characterised by the material
}
E01B 9/683
. . .
{
layered or composite
}
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E01B 9/685
. .
{
characterised by their shape
}
E01B 9/686
. . .
{
with textured surface
}
E01B 9/688
. . .
{
with internal cavities
}
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Rail joints ( electrical connection of the rail B60M 5/00 )
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E01B 11/02
.
Dismountable rail joints
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E01B 11/04
. .
Flat fishplates
E01B 11/06
. . .
with keys or pins
E01B 11/08
. .
Angle fishplates
E01B 11/10
. .
Fishplates with parts supporting or surrounding the rail foot
E01B 11/12
. .
Fishplates engaging only the rail foot
E01B 11/14
. .
Rail foot flange clips in one piece
E01B 11/16
. .
Fishplates for joining rails of different sections
E01B 11/18
. .
Fishplates for temporarily repairing broken rails
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E01B 11/20
. .
with gap-bridging
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E01B 11/22
. . .
by parts of the rails
E01B 11/24
. . . .
with oblique or overlapping rail ends
E01B 11/26
. . . .
with interlocking rail ends
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E01B 11/28
. . .
by parts of the joining members
E01B 11/30
. . . .
Fishplates with integral tread parts lying in the cross-section of the rail head
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E01B 11/32
. . .
by separate parts, Inserts bridging both rail heads
E01B 11/34
. . . .
Auxiliary rail beside gap
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E01B 11/36
. .
Fastening means for fishplates
E01B 11/38
. . .
Loking arrangements for fastening means ( locking means for nuts or bolts in general F16B )
E01B 11/40
. .
Dismountable rail joints combined with welded parts
E01B 11/42
.
Joint constructions for relatively movable rails, e.g. rails on turntables, traversers, or swing bridges
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E01B 11/44
.
Non-dismountable rail joints ; Welded joints ( welding methods B23K )
E01B 11/46
. .
General methods for making gapless tracks
E01B 11/48
. .
Joints made by flame welding
E01B 11/50
. .
Joints made by electric welding
E01B 11/52
. .
Joints made by alumino-thermal welding
E01B 11/54
.
Electrically-insulating rail joints
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E01B 11/56
.
Special arrangements for supporting rail ends ( foot supports E01B 11/08 to E01B 11/14 )
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E01B 11/58
. .
Bridge plates
E01B 11/60
. . .
with wedges
E01B 11/62
. .
Bridge chairs ( chairs E01B 9/54 to E01B 9/58 )
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Arrangements preventing shifting of the track
E01B 13/02
.
Rail anchors
Guards for preventing a person`s foot being trapped in grooved rails
Cattle guards connected to the permanent way ( grids in general for preventing cattle from straying A01K 3/00 )
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Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion ; Means to reduce development of noise ( snow fences E01F 7/02 , snow-ploughs E01H 8/02 , watering E01H 11/00 )
E01B 19/003
.
{
Means for reducing the development or propagation of noise
}
E01B 19/006
.
{
Means for protecting the underground against spillage
}
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Track superstructure adapted for tramways in paved streets ( paving E01C 9/04 , E01C 9/06 )
E01B 21/02
.
Special supporting means ; Draining of rails
E01B 21/04
.
Special fastenings, joint constructions, or tie-rods
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Easily dismountable or movable tracks, e.g. temporary railways ; Details specially adapted therefor
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E01B 23/02
.
Tracks for light railways, e.g. for field, colliery, or mine use
E01B 23/04
. .
Fastening or joining means
E01B 23/06
. .
Switches ( turntables B60S , B61J ) ; Portable switches ; Turnouts
E01B 23/08
.
Temporary tracks for use while repairing tramways
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E01B 23/10
.
Shiftable tracks for heavy loads, e.g. carrying excavators
E01B 23/12
. .
Sleepers
E01B 23/14
. .
Fastening or joining means ( fastening of rails by keys E01B 9/24 )
E01B 23/16
. .
Switches
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Tracks for special kinds of railways ( systems B61B ; wheel tracks on roads E01C 9/02 )
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E01B 25/02
.
Tracks for rack railways
E01B 25/04
. .
Rack rails ; Supports or connections for rack rails
E01B 25/06
. .
Switches ; Frogs ; Crossings
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E01B 25/08
.
Tracks for mono-rails with centre of gravity of vehicle above the load-bearing rail
E01B 25/10
. .
Mono-rails ; Auxiliary balancing rails ; Supports or connections for rails
E01B 25/12
. .
Switches ; Crossings
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E01B 25/14
.
Tracks for cable-drawn railway vehicles
E01B 25/15
. .
Switches ; Crossings
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E01B 25/16
.
Tracks for aerial rope railways with a stationary rope
E01B 25/18
. .
Ropers ; Supports, fastening or straining means for ropes ( ropes in general D07B ; masts E04H 12/00 ; ropes sockets F16G )
E01B 25/20
. .
Switches ; Crossings
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E01B 25/22
.
Tracks for railways with the vehicle suspended from rigid supporting rails
E01B 25/24
. .
Supporting rails ; Auxiliary balancing rails ; Supports or connections for rails
E01B 25/26
. .
Switches ; Crossings
E01B 25/28
.
Rail tracks for guiding vehicles when running on road or similar surface ( wheel tracks on roads E01C 9/02 )
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E01B 25/30
.
Tracks for magnetic suspension or levitation vehicles
E01B 25/305
. .
{
Rails or supporting constructions
}
E01B 25/32
. .
Stators, guide rails or slide rails
E01B 25/34
. .
Switches ; Frogs ; Crossings
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E01B 26/00
Tracks or track components not covered by any one of the preceding groups
E01B 26/005
.
{
Means for fixing posts, barriers, fences or the like to rails
}
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Guide Heading:
Making, maintaining, renewing, or taking-up the ballastway or the track ; Tools or machines specially designed therefor ( derailing or rerailing ofmachines B61K 5/00 ; removal of foreign matter from the permanent way, vegetation control applying liquids E01H )
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Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track ; Devices therefor ; Packing sleepers
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E01B 27/02
.
Placing the ballast ; Making ballastway ; Redistributing ballasting material ; Machines or devices therefor ; Levelling means
E01B 27/021
. .
{
by devices moving underneath the track, e.g. ballast sleighs
}
E01B 27/022
. .
{
by devices moving on the track with or without spreading or levelling
}
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E01B 27/023
. .
{
Spreading, levelling or redistributing ballast already placed
}
E01B 27/025
. . .
{
by means of non-driven tools
}
E01B 27/026
. . .
{
by means of driven tools, e.g. rotating brooms or digging devices
}
E01B 27/027
. .
{
Loosening ballasting material
}
E01B 27/028
. .
{
Compacting ballasting material; Performing ballast cores or seats for sleepers
}
E01B 27/04
.
Removing the ballast ; Machines therefor, whether or not additionally adapted for taking-up ballast ( E01B 27/06 , E01B 27/12 takes precedence; redistributing ballasting material E01B 27/02 )
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E01B 27/06
.
Renewing or cleaning the ballast in situ, wih or without concurrent work on the track
E01B 27/08
. .
the track having been taken-up ( E01B 27/11 takes precedence )
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E01B 27/10
. .
without taking-up track ( E01B 27/11 takes precedence )
E01B 27/102
. . .
{
Removing unwanted material without removing the ballast
}
E01B 27/105
. . .
{
the track having been lifted
}
E01B 27/107
. . .
{
along between the tracks only
}
E01B 27/11
. .
combined with concurrent renewal of track components
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E01B 27/12
.
Packing sleepers, with or without concurrent work on the track ; Compacting track-carrying ballast
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E01B 27/13
. .
Packing sleepers, with or without concurrent work on the track ( preforming ballast cores or seats for sleepers E01B 27/02 )
E01B 27/14
. . .
Manual tools or hand-held power tools therefor
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E01B 27/16
. . .
Sleeper-tamping machines
E01B 27/17
. . . .
combined with means for lifting, levlling or slewing the track
E01B 27/18
. . . .
by introducing additional fresh material under the sleepers, e.g. by the measured-shovel method, by the blowing method
E01B 27/20
. .
Compacting the material of the track-carrying ballastway, e.g. by vibrating the track, by surface vibrators ( of trackless ballastway E01B 27/02 ; for packing sleepers E01B 27/12 )
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Laying, rebuilding, or taking-up tracks ; Tools or machines therefor ( E01B 27/00 , E01B 31/00 take precedence )
E01B 29/005
.
{
Making of concrete parts of the track in situ
}
E01B 29/02
.
Transporting, laying, removing, or renewing lengths of assembled track, assembled switches, or assembled crossings ( E01B 29/04 takes precedence )
E01B 29/04
.
Lifting or levelling of tracks ( lifting devices in general B66F )
E01B 29/05
.
Transporting, laying, removing, or renewing both rails and sleepers ( as assembled units E01B 29/02 )
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E01B 29/06
.
Transporting, laying, removing or renewing sleepers ( E01B 29/05 takes precedence; carrying devices B65G 7/12 )
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E01B 29/09
. .
under, or from under, installed rails
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E01B 29/10
. . .
for inserting or removing sleepers
E01B 29/11
. . . .
Removal involving destruction of the sleeper, e.g. the sectioning thereof
E01B 29/13
. . .
for moving sleepers in a direction parallel to the rails, e.g. for spacing or aligning them ( E01B 29/10 takes precedence )
E01B 29/14
. . .
for lifting sleepers up to the rails ( lifting devices in general B66F )
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E01B 29/16
.
Transporting, laying, removing, or replacing rails ; Moving rails placed on sleepers in the track ( E01B 29/05 takes precedence; moving or tilting heavy loads in general B65G 7/00 )
E01B 29/17
. .
Lengths of rails assembled into strings, e.g. welded together
E01B 29/20
. .
Moving rails placed on installed sleepers in the plane track
E01B 29/22
. .
Raising rails from sleepers, e.g. for inserting sole-plates ( lifting devices in general B66F )
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E01B 29/24
.
Fixing or removing detachable fastening means or accessories thereof ; Pre-assembling track components by detachable fastening means ( E01B 29/02 , E01B 31/26 take precedence )
E01B 29/26
. .
the fastening means being spikes ( E01B 29/16 takes precedence; hand-held tools for nail or staple driving or extracting B25C )
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E01B 29/28
. .
the fastening means being of screw-and-nut type ( portable apparatus for fixing or removing screws or the like B25B ) ; Apparatus therefor, adapted to additionally drilling holes
E01B 29/29
. . .
for horizontally-arranged fastening elements, e.g. fish-bolts
E01B 29/32
.
Installing or removing track components, not covered by the preceding groups, e.g. sole-plates, rail anchors ( E01B 31/26 takes precedence )
E01B 29/40
.
Means or arrangements for temporarily supporting laid tracks, or rails or sleepers in the track ( temporary fishplates E01B 11/18 )
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E01B 29/42
.
Undetachably joining or fastening track components in or on the track, e.g. by welding, by gluing ; Pre-assembling track components by gluing ; Sealing joints with filling components ( E01B 31/26 takes precedence; independent heating means E01B 31/18 ; welding in general B23K; gluing metal parts in general F16B 11/00 )
E01B 29/44
. .
Methods for effecting joining of rails in the track, e.g. taking account of ambient temperature
E01B 29/46
. .
Devices for holding, positioning, or urging together the rail ends ( adjusting the joint by moving rails E01B 29/20 )
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Working rails, sleepers, baseplates, or the like, in or on the line ; Machines, tools, or auxiliary devices specially designed therefor ( characterised by features independent of use on assembled track B21 , B23 to B25 , B27 )
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E01B 31/02
.
Working rail or other metal track components on the spot
E01B 31/04
. .
Sectioning or slitting, e.g. by sawing, shearing, flame-cutting
E01B 31/06
. .
Making holes, e.g. by drilling, punching, flame-cutting
E01B 31/08
. .
Bending, e.g. for straightening rails or rail joints ( for aligning rail ends to be welded E01B 29/46 )
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E01B 31/12
. .
Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
E01B 31/13
. . .
by milling
E01B 31/15
. . .
by planing or filing
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E01B 31/17
. . .
by grinding
E01B 31/175
. . . .
{
using grinding belts
}
E01B 31/18
. .
Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding ( E01B 31/04 to E01B 31/12 take precedence ) ; Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
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E01B 31/20
.
Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting ( working metal sleepers E01B 31/02 )
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E01B 31/22
. .
Cutting or grinding wooden sleepers, e.g. for forming rail seats ( E01B 31/24 takes precedence )
E01B 31/23
. . .
Sectioning ( combined with removal of segments from track E01B 29/11 )
E01B 31/24
. .
Forming, treating, reconditioning, or cleaning holes in sleepers ; Drilling-templates ( E01B 29/28 , E01B 31/26 take precedence )
E01B 31/26
. .
Inserting or removing inserts or fillings for holes in sleepers, e.g. plugs, sleeves
E01B 31/28
. .
Applying or removing anti-splitting or like reinforcing means ( E01B 31/26 takes precedence; straps or bands therefor E01B 3/08 )
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Machines or devices for shifting tracks, with or without lifting, e.g.for aligning track, for shifting excavator track ( combined with sleeper packing machines E01B 27/17 )
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E01B 33/02
.
for slewing, i.e. transversely shifting, in steps
E01B 33/04
. .
Manual tools ; Devices not mounted on vehicles
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E01B 33/06
.
for slewing in a continuous operation, e.g. for tracks which carry excavators
E01B 33/08
. .
Boom track-slewing machines
E01B 33/10
. .
Bridge track-slewing machines
E01B 33/12
. .
Combined boom and bridge track-slewing machines
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E01B 33/18
. .
Details not peculiar to a particular type of machine
E01B 33/21
. . .
Arrangement or construction of rollers moving the rails
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Applications of measuring apparatus or devices for track-building purposes ( apparatus on locomotives or cars to indicate or record bad track sections B61K 9/00 ; measuring angles, linear dimensions, or irregularities in general G01B , G01C )
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E01B 35/02
.
for spacing, for cross levelling ; for laying-out curves
E01B 35/04
. .
Wheeled apparatus
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E01B 35/06
.
for measuring irregularities in longitudinal direction
E01B 35/08
. .
for levelling
E01B 35/10
. .
for aligning
E01B 35/12
.
for measuring movement of the track or of the components thereof under rolling loads, e.g. depression of sleepers, increase of gauge
E01B 37/00
Making, maintaining, renewing, or taking-up the ballastway or the track, not provided for in a single one of groups E01B 27/00 to E01B 35/00

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E01B 2201/00
Fastening or restraining methods
E01B 2201/02
.
by wedging action
E01B 2201/04
.
by bolting, nailing or the like
E01B 2201/06
.
by eccentric or levering action
E01B 2201/08
.
by plastic or elastic deformation of fastener
E01B 2201/10
.
in alternative ways, e.g. glueing, welding, form-fits
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Guide Heading:
Making, maintaining, renewing, or taking-up the ballastway or the track ; Tools or machines specially designed therefor ( derailing or rerailing ofmachines B61K 5/00 ; removal of foreign matter from the permanent way, vegetation control applying liquids E01H )
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E01B 2202/00
Characteristics of moving parts of rail systems, e.g. switches, special frogs, tongues
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E01B 2202/02
.
Nature of the movement
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E01B 2202/021
. .
Turning or tilting or elastically bending
E01B 2202/022
. . .
about horizontal axis
E01B 2202/024
. . .
about vertical axis
E01B 2202/025
. .
Pure translation
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E01B 2202/027
. .
Including a component perpendicular to the plane of the rails
E01B 2202/028
. . .
Movement along an inclined surface
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E01B 2202/04
.
Nature of the support or bearing
E01B 2202/042
. .
Sliding
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E01B 2202/044
. .
Rolling
E01B 2202/046
. . .
with rolls on fixed part
E01B 2202/048
. . .
with rolls on moving part
E01B 2202/06
. .
Use of friction-reducing surfaces
E01B 2202/08
.
Locking devices or mechanisms for inhibiting movement
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E01B 2203/00
Devices for working the railway-superstructure
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E01B 2203/01
.
with track
E01B 2203/012
. .
present, i.e. in its normal position
E01B 2203/015
. .
present but lifted
E01B 2203/017
. .
removed or not present yet
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E01B 2203/02
.
Removing or re-contouring ballast
E01B 2203/021
. .
Blowing
E01B 2203/022
. .
Horizontal chain
E01B 2203/024
. .
Inclined chain
E01B 2203/025
. .
Suction
E01B 2203/027
. .
Sweeping
E01B 2203/028
. .
Alternative ways
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E01B 2203/03
.
Displacing or storing ballast
E01B 2203/032
. .
with special use or configuration of conveyor belts
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E01B 2203/034
. .
using storing containers
E01B 2203/036
. . .
fixed to vehicle
E01B 2203/038
. . .
detachable from the vehicle
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E01B 2203/04
.
Cleaning or reconditioning ballast or ground beneath
E01B 2203/042
. .
in situ, e.g. vacuum-cleaners
E01B 2203/045
. .
the ballast having been taken up
E01B 2203/047
. .
Adding material, e.g. tar, glue, protective layers
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E01B 2203/06
.
Placing ballast
E01B 2203/062
. .
New ballast
E01B 2203/065
. .
Re-use of ballast
E01B 2203/067
. .
Special methods for posing or quantifying ballast
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E01B 2203/08
.
Levelling ballast or ground beneath
E01B 2203/083
. .
Ploughs
E01B 2203/086
. .
Rotating brooms
E01B 2203/10
.
Track-lifting or-lining devices or methods
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E01B 2203/12
.
Tamping devices
E01B 2203/122
. .
for straight track
E01B 2203/125
. .
adapted for switches or crossings
E01B 2203/127
. .
vibrating the track surface
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E01B 2203/14
.
Way of locomotion or support
E01B 2203/141
. .
on the track to be treated
E01B 2203/143
. .
on a side-track
E01B 2203/145
. .
on the ballast
E01B 2203/146
. .
using other means than driven wheels as propulsion means
E01B 2203/148
. .
having wheelsets that can be displaced horizontally or vertically
E01B 2203/15
.
Reducing impact of devices on environment
E01B 2203/16
.
Guiding or measuring means, e.g. for alignment, canting, stepwise propagation
E01B 2203/17
.
continually advancing
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E01B 2204/00
Characteristics of the track and its foundations
E01B 2204/01
.
Elastic layers other than rail-pads, e.g. sleeper-shoes, bituconcrete
E01B 2204/02
.
Ballast bags
E01B 2204/03
.
Injecting, mixing or spraying additives into or onto ballast or underground
E01B 2204/04
.
Direct mechanical or chemical fixing of sleepers onto underground
E01B 2204/05
.
Use of geotextiles
E01B 2204/06
.
Height or lateral adjustment means or positioning means for slabs, sleepers or rails
E01B 2204/07
.
Drainage
E01B 2204/08
.
Deep or vertical foundation
E01B 2204/09
.
Ballastless systems
E01B 2204/10
.
Making longitudinal or transverse sleepers or slabs in situ or embedding them
E01B 2204/11
.
Embedded tracks, using prefab elements or injecting or pouring a curable material
E01B 2204/12
.
Floating rails or sleepers
E01B 2204/13
.
Dowels for slabs, sleepers or rail-fixings
E01B 2204/14
.
Vegetation on or around railway-tracks
E01B 2204/15
.
Layout or geometry of the track
E01B 2204/16
.
Specific granulometry of the ballast
E01B 2205/00
Electrical insulation of railway track parts
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013