Skip over navigation
Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC)

CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE (combustion apparatus F23)
NOTE
-
Attention is drawn to the references and Notes following the title of class F27 and the Note III following the Contents of Section H.

Collapse
Casings; Linings; Walls; Roofs (refractory materials C04B; firebridges for combustion chambers F23M 3/00)
Collapse
F27D 1/0003
.
{
Linings or walls
}
NOTE
-
not used, see subgroups

Collapse
F27D 1/0006
. .
{
Linings or walls formed from bricks or layers with a particular composition or specific characteristics
}
Collapse
F27D 1/0009
. . .
{
Comprising ceramic fibre elements
}
Collapse
F27D 1/0013
. . . .
{
the fibre elements being in the form of a folded blanket or a juxtaposition of folded blankets
}
F27D 1/0016
. . . . .
{
Interleaved multiple folded blankets
}
F27D 1/002
. . . .
{
the fibre elements being composed of adjacent separate strips
}
Collapse
F27D 1/0023
. .
{
Linings or walls comprising expansion joints or means to restrain expansion due to thermic flows
}
F27D 1/0026
. . .
{
the expansion joint being a resilient element, e.g. a metallic plate between two bricks
}
F27D 1/003
. .
{
Linings or walls comprising porous bricks
}
. .
{
Linings or walls comprising heat shields, e.g. heat shieldsd (shields protecting the charge F27D 5/00)
}
F27D 1/0036
. .
{
Linings or walls comprising means for supporting electric resistances in the furnace
}
F27D 1/004
. .
{
Linings or walls comprising means for securing bricks
}
F27D 1/0043
.
{
Floors, hearths
}
Collapse
.
Crowns; Roofs
Collapse
F27D 1/021
. .
{
Suspended roofs
}
F27D 1/022
. . .
{
Parts thereof, e.g. noses, arches
}
F27D 1/024
. . .
{
having an anchored layer of lining
}
Collapse
F27D 1/025
. .
{
Roofs supported around their periphery, e.g. arched roofs
}
F27D 1/027
. . .
{
Skew backs
}
F27D 1/028
. . .
{
Means to prevent deformation of the arch
}
Collapse
F27D 1/04
.
characterised by the form
{
e.g. shape
}
of the bricks or blocks used
F27D 1/042
. .
{
Bricks shaped for use in regenerators
}
F27D 1/045
. .
{
Bricks for lining cylindrical bodies, e.g. skids, tubes
}
Collapse
F27D 1/06
. .
Composite bricks or blocks
{
e.g. panels, modules
}
Collapse
F27D 1/063
. . .
{
Individual composite bricks or blocks
}
F27D 1/066
. . . .
{
Individual composite bricks or blocks made from hollow bricks filled up with another material
}
F27D 1/08
. . .
Bricks or blocks with internal reinforcement or metal backing
.
Monolithic linings; Supports therefor
{
Note: supports are classified in F27D 1/14
}
F27D 1/12
.
incorporating cooling arrangements (constructions of tube assemblies in general F28)
Collapse
.
Supports for linings (F27D 1/10 takes precedence)
Collapse
F27D 1/141
. .
{
Anchors therefor
}
F27D 1/142
. . .
{
Anchors made from ceramic material
}
F27D 1/144
. .
{
Supports for ceramic fibre materials
}
Collapse
F27D 1/145
. .
{
Assembling elements
}
Collapse
F27D 1/147
. . .
{
for bricks
}
F27D 1/148
. . . .
{
Means to suspend bricks
}
Collapse
.
Making or repairing linings
{
increasing the durability of linings or breaking away linings
}
F27D 1/1621
. .
{
Making linings by using shaped elements, e.g. bricks
}
F27D 1/1626
. .
{
Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
}
Collapse
F27D 1/1636
. .
{
Repairing linings by projecting or spraying refractory materials on the lining
}
Collapse
F27D 1/1642
. . .
{
using a gunning apparatus
}
Collapse
F27D 1/1647
. . . .
{
the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
}
F27D 1/1652
. . . . .
{
Flame guniting; Use of a fuel
}
F27D 1/1668
. . . . .
{
Plasma guniting
}
F27D 1/1673
. . .
{
applied centrifugally
}
Collapse
F27D 1/1678
. .
{
Increasing the durability of linings; Means for protecting
}
F27D 1/1684
. . .
{
by a special coating applied to the lining
}
F27D 1/1694
. .
{
Breaking away the lining or removing parts thereof
}
Collapse
F27D 1/18
.
Door frames; Doors, lids, removable covers
Collapse
F27D 1/1808
. .
{
Removable covers
}
F27D 1/1816
. . .
{
Removable covers specially adapted for arc furnaces
}
Collapse
F27D 1/1858
. .
{
Doors
}
F27D 1/1866
. . .
{
Door-frames
}
Collapse
Charging; Discharging; Manipulation of charge (moving charge through a furnace F27B 9/14)
Collapse
F27D 3/0021
.
{
of ceramic ware
}
F27D 3/0022
. .
{
Disposition of the charge
}
.
{
of metallic workpieces
}
Collapse
F27D 3/0025
.
{
Charging or loading melting furnaces with material in the solid state
}
F27D 3/0026
. .
{
Introducing additives into the melt
}
Collapse
F27D 3/0027
. .
{
Charging vertically with corbs
}
F27D 3/0028
. . .
{
Corbs
}
F27D 3/003
. .
{
Charging laterally, e.g. with a charging box
}
F27D 3/0031
. .
{
Charging with tiltable dumpers
}
F27D 3/0032
. .
{
using an air-lock
}
F27D 3/0033
.
{
charging of particulate material
}
F27D 3/0084
.
{
Charging; Manipulation of SC or SC wafers
}
Collapse
F27D 3/02
.
Skids or tracks for heavy objects
Collapse
F27D 3/022
. .
{
Skids
}
F27D 3/024
. . .
{
Details of skids, e.g. riders
}
Collapse
. .
{
transport or conveyer rolls for furnaces; roller rails (conveyer rolls in general B65G)
}
F27D 3/028
. . .
{
Roller rails or succession of small sized rollers
}
F27D 3/04
.
Ram or pusher apparatus
F27D 3/06
.
Charging or discharging machines on travelling carriages
.
Screw feeders; Screw dischargers
F27D 3/10
.
Charging directly from hoppers or shoots
Collapse
F27D 3/12
.
Travelling or movable supports or containers for the charge
F27D 3/123
. .
{
Furnace cars
}
Collapse
F27D 3/14
.
Charging or discharging liquid or molten material
F27D 3/145
. .
{
Runners therefor
}
Collapse
.
Tapping equipment; Equipment for removing
{
or retaining
}
slag
Collapse
F27D 3/1509
. .
{
Tapping equipment
}
F27D 3/1518
. . .
{
Tapholes
}
. . .
{
Taphole forming equipment, e.g. boring machines, piercing tools
}
F27D 3/1536
. . .
{
Devices for plugging tap holes, e.g. plugs stoppers
}
{
Note: the devices fixed permanently to the melt container are classified in F27D3/15A
}
Collapse
F27D 3/1545
. .
{
Equipment for removing or retaining slag
}
Collapse
F27D 3/1554
. . .
{
for removing the slag from the surface of the melt
}
F27D 3/1563
. . . .
{
by the use of scrapers
}
F27D 3/1572
. . . .
{
by suction
}
F27D 3/1581
. . . .
{
by the use of blowers
}
F27D 3/159
. . .
{
for retaining slag during the pouring of the metal or retaining metal during the pouring of the slag
}
.
Introducing a fluid jet or current into the charge
{
(porous elements for gas flushing of molten metals B22D 1/005)
}
.
Charging particulate material using a fluid carrier
Collapse
Supports, screens, or the like for the charge within the furnace (travelling or movable supports F27D 3/12)
Collapse
F27D 5/0006
.
{
Composite supporting structures
}
F27D 5/0012
. .
{
Modules of the sagger or setter type; Supports built up from them
}
F27D 5/0018
. .
{
Separating elements
}
F27D 5/0025
. .
{
assembled to present a three-point support
}
.
{
Treatment baskets for ceramic articles (for metallic articles C21D 9/0025)
}
F27D 5/0037
.
{
Supports specially adapted for semi-conductors
}
F27D 5/0043
.
{
Supports specially adapted for dental prosthesis
}
F27D 5/005
.
{
Supports specially adapted for holding elongated articles in an upright position, e.g. sparking plugs
}
F27D 5/0056
.
{
Hangers
}
.
{
Shields for the charge (shields for the lining F27D 1/0033)
}
F27D 5/0068
.
{
Containers
}
Collapse
Forming, maintaining, or circulating atmospheres in heating chambers
F27D 7/02
.
Supplying steam, vapour, gases, or liquids
F27D 7/04
.
Circulating atmospheres by mechanical means
F27D 7/06
.
Forming or maintaining special atmospheres or vacuum within heating chambers (F27D 7/02 takes precedence)
Cooling of furnaces or of charges therein (F27D 1/00, F27D 3/00 take precedence)
Collapse
Arrangement of elements for electric heating in or on furnaces (electric heating per se H05B)
Collapse
.
Ohmic resistance heating
F27D 11/04
. .
with direct passage of current through the material being heated
F27D 11/06
.
Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
Collapse
F27D 11/08
.
Heating by electric discharge, e.g. arc discharge
. .
Disposition of electrodes (automatic control of temperature G05D 23/00; electric discharge apparatus H01T; arrangements for feeding or guiding electrodes H05B 7/10; automatic control of power by positioning of electrodes H05B 7/144)
F27D 11/12
.
with electromagnetic fields acting directly on the material being heated
Collapse
Apparatus for preheating charges; Arrangements for preheating charges
.
{
Preheating scrap (preheating of scrap for steel making C21C 5/565)
}
F27D 13/005
.
{
Drying of green clay prior to baking
}
Collapse
F27D 15/00
Handling or treating discharged material; Supports or receiving chambers therefor
Collapse
F27D 15/02
.
Cooling
Collapse
F27D 15/0206
. .
{
with means to convey the charge
}
Collapse
. . .
{
comprising a cooling grate
}
F27D 15/022
. . . .
{
grate plates
}
F27D 15/0266
. . .
{
on an endless belt
}
F27D 15/0273
. . .
{
on a rotary hearth
}
F27D 15/028
. . .
{
comprising a rotary drum
}
F27D 15/0286
. .
{
in a vertical, e.g. annular, shaft (shafts including rotating parts F27D 15/0273)
}
Collapse
Arrangements for using waste heat (heat-exchangers per se F28); Arrangements for using, or disposing of, waste gases
Collapse
.
{
Extraction of waste gases, collection of fumes and hoods used therefor (in general B08B 15/00)
}
F27D 17/002
. .
{
Details of the installations, e.g. fume conduits or seals
}
. .
{
of waste gases emanating from an electric arc furnace
}
F27D 17/004
.
{
Systems for reclaiming waste heat
}
F27D 17/008
.
{
cleaning gases
}
Arrangements of controlling devices
Collapse
Arrangements of monitoring devices; Arrangements of safety devices
F27D 21/0014
.
{
Devices for monitoring temperature
}
F27D 21/0021
.
{
Devices for monitoring linings for wear
}
F27D 21/0028
.
{
Devices for monitoring the level of the melt
}
F27D 21/0035
.
{
Devices for monitoring the weight of quantities added to the charge
}
F27D 21/02
.
Observation or illuminating devices
F27D 21/04
.
Arrangements of indicators or alarms
Collapse
Devices
{
or methods
}
for removing incrustations,
{
e.g. slag, metal deposits, dust
}
;
{
Devices or methods for preventing the adherence of slag
}
Collapse
.
{
comprising breaking tools, e.g. hammers, drills, scrapers (breaking away linings F27D 1/1694; boring machines for forming tapholes F27D 3/1527)
}
F27D 25/003
. .
{
used for punching tuyeres
}
F27D 25/005
. .
{
used for cleaning the channels of induction furnaces
}
F27D 25/006
.
{
using explosives
}
F27D 25/008
.
{
using fluids or gases, e.g. blowers, suction units
}
Collapse
Stirring devices for molten material (F27D 3/14 takes precedence)
Collapse
F27D 27/005
.
{
Pumps
}
F27D 27/007
. .
{
Pulsating pumps
}
Collapse
Subject matter not provided for in other groups of this subclass
Collapse
F27D 99/0001
.
{
Heating elements or systems
}
F27D 99/0003
. .
{
with particulate fuel, e.g. aspects relating to the feeding
}
F27D 99/0005
. .
{
Injecting liquid fuel
}
. .
{
Electric heating elements or system
}
Collapse
. .
{
using burners (manufacture of steel in an electric arc furnace equipped with burners C21C 5/5217)
}
F27D 99/0035
. . .
{
Heating indirectly through a radiant surface
}
F27D 99/007
.
{
Partitions
}
Collapse
F27D 99/0073
.
{
Seals
}
F27D 99/0075
. .
{
Gas curtain seals
}
F27D 99/0076
. .
{
Furnace car seals, i.e. seals used in continuous furnaces or kilns for preventing gas or heat exchange between heating chamber and the area comprising driving means
}
Collapse
F27D 2001/00
Casings; Linings; Walls; Roofs (refractory materials C04B; firebridges for combustion chambers F23M 3/00)
Collapse
F27D 2001/0046
.
Means to facilitate repair or replacement or prevent quick wearing (repairing linings F27D 1/16)
F27D 2001/005
. .
Removable part or structure with replaceable elements
F27D 2001/0053
. .
Furnace constructed in modules (tunnel furnaces with add-on modules F27B 9/029)
F27D 2001/0056
. .
Aspects of construction intended to prevent wear
Collapse
F27D 2001/0059
.
Construction elements of a furnace
F27D 2001/0063
. .
Means to strengthen a part
F27D 2001/0066
. .
Movable or removable parts (removable parts for replacement because of wearing F27D 2001/005)
Collapse
F27D 2001/0069
. .
Means to prevent heat conduction (heat shields F27D 1/0033)
F27D 2001/0073
. . .
Surrounding protection around the furnace, e.g. covers, circulation of gas
F27D 2001/0076
. .
comprising a corrugated sheet
Collapse
F27D 2001/0079
.
Means to assemble at least two parts of a furnace or of any device or accessory associated to its use (assembling elements for linings parts F27D 1/145)
Collapse
F27D 2001/0083
. .
Means to assemble a moving part to a fixed one (movements due to thermal expansion F27D 1/0003; movements of the cover F27D 1/18; movements of the container or of the support of the cahrge F27D 2003/0085)
F27D 2001/0086
. . .
the moving part being in rotation
F27D 2001/0089
. . .
the moving part being in translation
F27D 2001/0093
. . .
the moving part being hinged to the fixed one
F27D 2001/0096
. . .
the moving part staying in the same plane
Collapse
F27D 2001/04
.
characterised by the form
{
e.g. shape
}
of the bricks or blocks used
Collapse
F27D 2001/045
. .
{
Bricks for lining cylindrical bodies, e.g. skids, tubes
}
F27D 2001/047
. . .
Lining of cylindrical vessels
Collapse
F27D 2001/16
.
Making or repairing linings
{
increasing the durability of linings or breaking away linings
}
Collapse
F27D 2001/1605
. .
Repairing linings
F27D 2001/161
. . .
Hot repair
F27D 2001/1615
. . .
through a hole in the casing, e.g. injecting refractory from outside the vessel
Collapse
F27D 2001/1626
. .
{
Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
}
F27D 2001/1631
. . .
using an expandable core
Collapse
F27D 2001/1636
. .
{
Repairing linings by projecting or spraying refractory materials on the lining
}
Collapse
F27D 2001/1642
. . .
{
using a gunning apparatus
}
Collapse
F27D 2001/1647
. . . .
{
the projected materials being partly melted, e.g. by exothermic reactions of metals (Al, Si) with oxygen
}
Collapse
F27D 2001/1652
. . . . .
{
Flame guniting; Use of a fuel
}
F27D 2001/1657
. . . . . .
Solid fuel
F27D 2001/1663
. . . . . .
Fluid fuel, e.g. gas
Collapse
F27D 2001/1678
. .
{
Increasing the durability of linings; Means for protecting
}
Collapse
F27D 2001/1684
. . .
{
by a special coating applied to the lining
}
F27D 2001/1689
. . . .
obtained from materials added to the melt
Collapse
F27D 2001/18
.
Door frames; Doors, lids, removable covers
Collapse
F27D 2001/1808
. .
{
Removable covers
}
Collapse
F27D 2001/1825
. . .
Means for moving the cover
F27D 2001/1833
. . . .
comprising a screw mechanism
F27D 2001/1841
. . . .
comprising means for rotating or moving the cover in a horizontal or quasi horizontal plane
F27D 2001/185
. . . .
comprising means for tilting the cover
Collapse
F27D 2001/1858
. .
{
Doors
}
Collapse
F27D 2001/1875
. . .
Hanging doors and walls (movable partitions R27D23/00B2)
F27D 2001/1883
. . . .
Hanging curtains
F27D 2001/1891
. . .
Doors for separating two chambers in the furnace
Collapse
F27D 2003/00
Charging; Discharging; Manipulation of charge (moving charge through a furnace F27B 9/14)
Collapse
F27D 2003/0001
.
Positioning the charge
F27D 2003/0002
. .
involving positioning devices, e.g. buffers, buffer zones (involving sensors F27D 2019/0071; involving sequence controllers F27D 2019/0059; involving spacers F27M 2002/016)
F27D 2003/0003
. .
involving a system for aligning the articles through a lateral guidance, e.g. funnel
F27D 2003/0004
. .
involving devices for measuring the article, the stack of articles or the height of the furnace passage or for adjusting the height of the passage to the charge or for putting the articles in the same position
Collapse
F27D 2003/0006
. .
Particulate materials
F27D 2003/0007
. . .
Circular distribution
F27D 2003/0008
. . .
Longitudinal distribution
F27D 2003/0009
. . .
Separation of different types of fines, e.g. by a blower
F27D 2003/001
. . .
Series of dispensers or separation in teo or more parts
Collapse
F27D 2003/0012
. .
Working with piles
F27D 2003/0013
. . .
Unstacking or making stacks
Collapse
F27D 2003/0014
. .
involving the use of magazines
F27D 2003/0015
. . .
the magazine being vertical
F27D 2003/0016
. . .
the magazine being a rotary device
Collapse
F27D 2003/0018
. .
comprising means to introduce or extract the charge in series of separate containers or zones
F27D 2003/0019
. . .
simultaneously
F27D 2003/002
. .
Transforming a single row in a multiple row
Collapse
F27D 2003/0034
.
Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
F27D 2003/0036
. .
comprising inflatable or extendable parts
F27D 2003/0037
. .
comprising friction surfaces
F27D 2003/0038
. .
comprising shakers
Collapse
F27D 2003/0039
. .
comprising magnetic means
F27D 2003/004
. . .
Magnetic lifters
Collapse
F27D 2003/0042
. .
comprising roller trains
F27D 2003/0043
. . .
at least one of them being driven separately
F27D 2003/0044
. . .
at least one of them being removable
F27D 2003/0045
. . .
Use of rollable bodies, e.g. balls
Collapse
F27D 2003/0046
. .
comprising one or more movable arms, e.g. forks
Collapse
F27D 2003/0048
. . .
Walking beams
F27D 2003/0049
. . . .
comprising eccentrics or lever arms
F27D 2003/005
. . . .
comprising ramps
F27D 2003/0051
. .
comprising means to pick up the charge and put it down
F27D 2003/0053
. .
comprising a device for charging with the doors closed
Collapse
F27D 2003/0054
. .
Means to move molten metal, e.g. electromagnetic pump
F27D 2003/0055
. . .
with flow regulation
F27D 2003/0056
. . .
through a syphon in a vacuum chamber, e.g. involving aspiration or pression on the bath
F27D 2003/0057
. .
Fast-outlet or inlet means
Collapse
F27D 2003/0059
. .
comprising tracks, e.g. rails and wagon
F27D 2003/006
. . .
with a return track
F27D 2003/0061
. . .
with means for changing track
F27D 2003/0062
. .
using devices for tilting or rocking the charge
F27D 2003/0063
. .
comprising endless belts
F27D 2003/0065
. .
Lifts, e.g. containing the bucket elevators
F27D 2003/0066
. .
comprising scrapers or systems to pull out
F27D 2003/0067
. .
comprising conveyers where the translation is communicated by friction from at least one rotating element, e.g. two opposed rotations combined
F27D 2003/0068
. .
comprising clamps or tongs
F27D 2003/0069
. .
the device being suspended, e.g. from a crane
F27D 2003/0071
. .
Use of a comminuting device, e.g. grinding mill
F27D 2003/0072
. .
Use of a pinion and a rack
Collapse
F27D 2003/0073
. .
the charge floating on a liquid, e.g. water
F27D 2003/0074
. . .
floating on water
F27D 2003/0075
. .
Charging or discharging vertically, e.g. through a bottom opening
F27D 2003/0077
. .
Use of centrifugal devices
F27D 2003/0078
. .
comprising jacks, e.g. hydraulic jacks
F27D 2003/0079
. .
Use of cams
F27D 2003/008
. .
comprising cross-beams or gantry cranes
F27D 2003/0081
. .
Series of little rams
F27D 2003/0083
. .
Means for stirring the charge
Collapse
F27D 2003/0085
.
Movement of the container or support of the charge in the furnace or in the charging facilities
F27D 2003/0086
. .
Up or down
F27D 2003/0087
. .
Rotation about a vertical axis
Collapse
F27D 2003/0089
. .
Rotation about a horizontal or slightly inclined axis
F27D 2003/009
. . .
Oscillations about a horizontal axis; Rocking
Collapse
F27D 2003/0091
. .
Horizontally
F27D 2003/0092
. . .
with a reciprocating movement
F27D 2003/0093
. .
Movement on a slope
F27D 2003/0095
. .
the advancement being step by step
F27D 2003/0096
. .
Advancement along the longitudinal axis of the workpiece
Collapse
F27D 2003/0097
. .
Advancement along an axis perpendicular to the axis of the workpiece
F27D 2003/0098
. . .
Workpiece rolling on its support
Collapse
F27D 2003/04
.
Ram or pusher apparatus
F27D 2003/045
. .
used to pull the charge
Collapse
F27D 2003/10
.
Charging directly from hoppers or shoots
F27D 2003/105
. .
using shutters
Collapse
F27D 2003/12
.
Travelling or movable supports or containers for the charge
Collapse
F27D 2003/121
. .
Band, belt or mesh
F27D 2003/122
. . .
Band made from longitudinal wires or bars
F27D 2003/124
. .
Sleds; Transport supports
Collapse
F27D 2003/125
. .
Charging cars, lift trolleys
F27D 2003/126
. . .
with long arms, charging forks
F27D 2003/127
. . .
for carrying pots (slag pots R27D23/00K6)
F27D 2003/128
. . .
for carrying stacks of articles, e.g. bricks
Collapse
F27D 2003/16
.
Introducing a fluid jet or current into the charge
{
(porous elements for gas flushing of molten metals B22D 1/005)
}
F27D 2003/161
. .
through a porous element
Collapse
F27D 2003/162
. .
the fluid being an oxidant or a fuel
Collapse
F27D 2003/163
. . .
the fluid being an oxidant
F27D 2003/164
. . . .
Oxygen
F27D 2003/165
. . .
the fluid being a fuel
F27D 2003/166
. .
the fluid being a treatment gas
F27D 2003/167
. .
the fluid being a neutral gas
Collapse
F27D 2003/168
. .
through a lance
F27D 2003/169
. . .
Construction of the lance, e.g. lances for injecting particles
Collapse
F27D 2003/18
.
Charging particulate material using a fluid carrier
F27D 2003/185
. .
Conveying particles in a conduct using a fluid
Collapse
F27D 2005/00
Supports, screens, or the like for the charge within the furnace (travelling or movable supports F27D 3/12)
Collapse
F27D 2005/0068
.
{
Containers
}
F27D 2005/0075
. .
Pots, e.g. slag pots, ladles
Collapse
F27D 2005/0081
.
Details
F27D 2005/0087
. .
Means to prevent the adherence of the charge
F27D 2005/0093
. .
Means to maintain the form of the article
Collapse
F27D 2007/00
Forming, maintaining, or circulating atmospheres in heating chambers
Collapse
F27D 2007/02
.
Supplying steam, vapour, gases, or liquids
F27D 2007/023
. .
Conduits
F27D 2007/026
. .
Dampers (registers for granular flows R27D23/00B2)
Collapse
F27D 2007/04
.
Circulating atmospheres by mechanical means
F27D 2007/045
. .
Fans
Collapse
F27D 2007/06
.
Forming or maintaining special atmospheres or vacuum within heating chambers (F27D 7/02 takes precedence)
F27D 2007/063
. .
Special atmospheres, e.g. high pressure atmospheres
F27D 2007/066
. .
Vacuum
Collapse
F27D 2009/00
Cooling of furnaces or of charges therein (F27D 1/00, F27D 3/00 take precedence)
Collapse
F27D 2009/0002
.
Cooling of furnaces
Collapse
F27D 2009/0005
. .
the cooling medium being a gas
F27D 2009/0008
. . .
Ways to inject gases against surfaces
Collapse
F27D 2009/001
. .
the cooling medium being a fluid other than a gas
Collapse
F27D 2009/0013
. . .
the fluid being water
F27D 2009/0016
. . . .
Water-spray
Collapse
F27D 2009/0018
. .
the cooling medium passing through a pattern of tubes
Collapse
F27D 2009/0021
. . .
with the parallel tube parts close to each other, e.g. a serpentine
F27D 2009/0024
. . . .
with contiguous tubes, which may be separately welded one to the other
F27D 2009/0027
. . . .
linked by elements
F27D 2009/0029
. . . .
fixed, e.g. welded to a supporting surface
F27D 2009/0032
. . .
integrated with refractories in a panel
F27D 2009/0035
. . .
arranged for the covering of a cylindrical surface
F27D 2009/0037
. .
the cooling medium passing a radiator
Collapse
F27D 2009/004
. .
the cooling medium passing a waterbox
F27D 2009/0043
. . .
Insert type waterbox, e.g. cylindrical or flat type
Collapse
F27D 2009/0045
. .
the cooling medium passing a block, e.g. metallic
F27D 2009/0048
. . .
incorporating conduits for the medium
Collapse
F27D 2009/0051
. .
comprising use of studs to transfer heat or retain the liner
F27D 2009/0054
. . .
adapted to retain formed bricks
Collapse
F27D 2009/0056
. .
Use of high thermoconductive elements
F27D 2009/0059
. . .
made mostly from graphite
F27D 2009/0062
. . .
made from copper or copper alloy
F27D 2009/0064
. .
Cooling of furnace arches
F27D 2009/0067
. .
Cooling element inlet and outlet tubes
Collapse
F27D 2009/007
.
Cooling of charges therein
Collapse
F27D 2009/0072
. .
the cooling medium being a gas
F27D 2009/0075
. . .
in direct contact with the charge
F27D 2009/0078
. . .
in indirect contact with the charge
Collapse
F27D 2009/0081
. .
the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
Collapse
F27D 2009/0083
. . .
the fluid being water
F27D 2009/0086
. . . .
applied in spray form
F27D 2009/0089
. .
Quenching
F27D 2009/0091
. .
in a fluidised bed of cooling elements
Collapse
F27D 2009/0094
. .
making use of already cooled material, e.g. forming a layer
F27D 2009/0097
. . .
the charge being used as a coolant
Collapse
F27D 2013/00
Apparatus for preheating charges; Arrangements for preheating charges
F27D 2013/007
.
using a rotary furnace
Collapse
F27D 2015/00
Handling or treating discharged material; Supports or receiving chambers therefor
Collapse
F27D 2015/02
.
Cooling
Collapse
F27D 2015/0206
. .
{
with means to convey the charge
}
Collapse
F27D 2015/0213
. . .
{
comprising a cooling grate
}
Collapse
F27D 2015/022
. . . .
{
grate plates
}
F27D 2015/0226
. . . . .
Support, fixation of the grate
F27D 2015/0233
. . . . .
with gas, e.g. air, supply to the grate
F27D 2015/024
. . . .
Multiple grates
Collapse
F27D 2015/0246
. . . .
Combination of fixed and movable grates
F27D 2015/0253
. . . . .
Gradin grates
F27D 2015/026
. . . .
Means to discharge the fines
Collapse
F27D 2015/0286
. .
{
in a vertical, e.g. annular, shaft (shafts including rotating parts F27D 15/0273)
}
F27D 2015/0293
. . .
including rotating parts
Collapse
F27D 2017/00
Arrangements for using waste heat (heat-exchangers per se F28); Arrangements for using, or disposing of, waste gases
Collapse
F27D 2017/004
.
{
Systems for reclaiming waste heat
}
F27D 2017/005
. .
including pyrolising the waste gases
F27D 2017/006
. .
using a boiler
F27D 2017/007
. .
including regenerators
F27D 2017/009
.
Cyclone for separating fines from gas
Collapse
F27D 2019/00
Arrangements of controlling devices
F27D 2019/0003
.
Monitoring the temperature or a characteristic of the charge and using it as a controlling value
Collapse
F27D 2019/0006
.
Monitoring the characteristics (composition, quantities, temperature, pression) of at least one of the gases of the kiln atmosphere and using it as a controlling value
F27D 2019/0009
. .
Monitoring the pression in an enclosure or kiln zone
Collapse
F27D 2019/0012
. .
Monitoring the composition of the atmosphere or of one of their components
F27D 2019/0015
. . .
Monitoring the composition of the exhaust gases or of one of its components
Collapse
F27D 2019/0018
. .
Monitoring the temperature of the atmosphere of the kiln
F27D 2019/0021
. . .
Monitoring the temperature of the exhaust gases
F27D 2019/0025
. .
Monitoring the temperature of a part or of an element of the furnace structure
Collapse
F27D 2019/0028
.
Regulation
F27D 2019/0031
. .
through control of the flow of the exhaust gases
Collapse
F27D 2019/0034
. .
through control of a heating quantity such as fuel, oxidant or intensity of current
F27D 2019/0037
. . .
Quantity of electric current
Collapse
F27D 2019/004
. . .
Fuel quantity
F27D 2019/0043
. . . .
Amount of air or O2 to the burner
F27D 2019/0046
. . . .
Amount of secondary air to the burner
Collapse
F27D 2019/005
. . .
Amount of heat given to the charge via a controlled heat exchanger
F27D 2019/0053
. . . .
involving heating the charge in a fluid or fluidised medium
F27D 2019/0056
. .
Regulation involving cooling
Collapse
F27D 2019/0059
. .
Regulation involving the control of the conveyer movement, e.g. speed or sequences
F27D 2019/0062
. . .
control of the workpiece stay in different zones
F27D 2019/0065
. .
Regulation involving controlled section modification
F27D 2019/0068
. .
Regulation involving a measured inflow of a particular gas in the enclosure
F27D 2019/0071
. .
Regulation using position sensors
F27D 2019/0075
. .
Regulation of the charge quantity
F27D 2019/0078
. .
Regulation of the speed of the gas through the charge
F27D 2019/0081
.
Controlling an air-lock chamber
F27D 2019/0084
.
Controlling closure systems, e.g. doors
Collapse
F27D 2019/0087
.
Automatisation of the whole plant or activity
F27D 2019/009
. .
Use of codes, e.g. bar codes
F27D 2019/0093
.
Maintaining a temperature gradient
F27D 2019/0096
.
involving simulation means, e.g. of the treating or charging step
Collapse
F27D 2021/00
Arrangements of monitoring devices; Arrangements of safety devices
F27D 2021/0007
.
Monitoring the pression
Collapse
F27D 2021/0035
.
{
Devices for monitoring the weight of quantities added to the charge
}
F27D 2021/0042
. .
Monitoring the level of the solid charge
F27D 2021/005
.
Devices for monitoring thermal expansion
Collapse
F27D 2021/0057
.
Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects
F27D 2021/0064
. .
against noises
F27D 2021/0071
. .
against explosions
F27D 2021/0078
. .
against the presence of an undesirable element in the atmosphere of the furnace
F27D 2021/0085
. .
against molten metal, e.g. leakage or splashes
F27D 2021/0092
. .
against a jam in the transport line or a production interruption
Collapse
F27D 2021/02
.
Observation or illuminating devices
F27D 2021/023
. .
Closable inserting openings, e.g. for the introduction of lances, sensors or burners
F27D 2021/026
. .
using a video installation
Collapse
F27D 2027/00
Stirring devices for molten material (F27D 3/14 takes precedence)
F27D 2027/002
.
Gas stirring
Collapse
F27D 2099/00
Subject matter not provided for in other groups of this subclass
Collapse
F27D 2099/0001
.
{
Heating elements or systems
}
Collapse
F27D 2099/0006
. .
{
Electric heating elements or system
}
Collapse
F27D 2099/0008
. . .
Resistor heating
F27D 2099/001
. . . .
the container being the resistor
Collapse
F27D 2099/0011
. . . .
The resistor heats a radiant tube or surface
F27D 2099/0013
. . . . .
immersed in the charge
Collapse
F27D 2099/0015
. . .
Induction heating
F27D 2099/0016
. . . .
Different magnetic fields, e.g. two coils, different characteristics of the same coil along its length or different parts of the same coil used
F27D 2099/0018
. . . .
Relative movement of the coil and the charge during the heat treatment
F27D 2099/002
. . . .
Core heating
Collapse
F27D 2099/0021
. . .
Arc heating
F27D 2099/0023
. . . .
DC arc heating
F27D 2099/0025
. . .
Currents through the charge
F27D 2099/0026
. . .
with a generator of electromagnetic radiations
F27D 2099/0028
. . .
Microwave heating
F27D 2099/003
. . .
Bombardment heating, e.g. with ions or eletrons
F27D 2099/0031
. . .
Plasma-torch heating
Collapse
F27D 2099/0033
. .
{
using burners (manufacture of steel in an electric arc furnace equipped with burners C21C 5/5217)
}
F27D 2099/0036
. . .
immersed in the charge
F27D 2099/0038
. . .
removable
Collapse
F27D 2099/004
. . .
directed upon the charge, e.g. vertically
F27D 2099/0041
. . . .
with a small angle, e.g. almost tangentially
F27D 2099/0043
. . .
Impulse burner
F27D 2099/0045
. . .
Radiant burner
Collapse
F27D 2099/0046
. . .
with incomplete combustion, e.g. reducing atmosphere
F27D 2099/0048
. . . .
Post- combustion
F27D 2099/005
. . .
Catalytic burner
F27D 2099/0051
. . .
Burning waste as a fuel
Collapse
F27D 2099/0053
. . .
Burner fed with preheated gases
F27D 2099/0055
. . . .
Fuel
F27D 2099/0056
. . . .
Oxidant
F27D 2099/0058
. .
Means for heating the charge locally
F27D 2099/006
. .
Auxiliary heating, e.g. in special conditions or at special times
Collapse
F27D 2099/0061
. .
Indirect heating
F27D 2099/0063
. . .
Liquid
F27D 2099/0065
. . .
Gas
F27D 2099/0066
. . .
Particles or solid bodies, e.g. bed of particles
F27D 2099/0068
. .
Heating directly by circulation of a fluid other than a gas or by particles
Collapse
F27D 2099/007
.
{
Partitions
}
F27D 2099/0071
. .
Partitions used as registers
Collapse
F27D 2099/0073
.
{
Seals
}
Collapse
F27D 2099/0078
. .
Means to minimize the leakage of the furnace atmosphere during charging or discharging
F27D 2099/008
. . .
Using an air-lock (use of air-locks for charging smelt furnaces F27D 3/0032)
F27D 2099/0081
. .
Joint
F27D 2099/0083
.
Drives; Auxilliary drives
Collapse
F27D 2099/0085
.
Accessories
F27D 2099/0086
. .
Filters, e.g. for molten metals
F27D 2099/0088
. .
Apparatus to cut metal, e.g. logs, in billets
F27D 2099/009
. .
Bumpers
F27D 2099/0091
. .
Means to grease or oil
F27D 2099/0093
. .
Means to collect ashes or dust, e.g. vessels
F27D 2099/0095
. .
Means to collect the slag or spilled metal, e.g. vessels (cars to carry the pots F27D 2003/127)
F27D 2099/0096
. .
Presses
F27D 2099/0098
. .
Means for moving the furnace
F27D 2201/00
Manipulation of furnace parts
NOTE
-
Indexing code F27D 2201/00 can be followed by additional indexing codes preceded by a + sign. These additional indexing codes are chosen from codes of subclass R27D describing similar manipulations of furnace charges.
Example: F27D 2201/00 + F27D 2003/0036

This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013