F27B1/00	7	Shaft or like vertical or substantially vertical furnaces	F27B1/00	F27B1/00		279
F27B1/005	8	{wherein no smelting of the charge occurs, e.g. calcining or sintering furnaces}	F27B1/00	F27B1/00		1050
F27B1/02	8	with two or more shafts or chambers, e.g. multi-storey	F27B1/02	F27B1/02		375
F27B1/025	9	{with fore-hearth}	F27B1/02	F27B1/02		272
F27B1/04	9	Combinations or arrangements of shafts	F27B1/04	F27B1/04		164
F27B1/06	8	of other than up-draught type	F27B1/06	F27B1/06		30
F27B1/08	8	heated otherwise than by solid fuel mixed with charge	F27B1/08	F27B1/08		819
F27B1/10	8	Details, accessories or equipment specially adapted for furnaces of these types	F27B1/10	F27B1/10		807
F27B1/12	9	Shells or casings; Supports therefor	F27B1/12	F27B1/12		121
F27B1/14	10	Arrangements of linings	F27B1/14	F27B1/14		219
F27B1/16	9	Arrangements of tuyeres	F27B1/16	F27B1/16		799
F27B1/18	9	Arrangements of dust collectors	F27B1/18	F27B1/18		217
F27B1/20	9	Arrangements of devices for charging	F27B1/20	F27B1/20		1322
F27B1/21	9	Arrangements of devices for discharging	F27B1/21	F27B1/21		725
F27B1/22	9	Arrangements of heat-exchange apparatus	F27B1/22	F27B1/22		278
F27B1/24	9	Cooling arrangements	F27B1/24	F27B1/24		568
F27B1/26	9	Arrangements of controlling devices	F27B1/26	F27B1/26		365
F27B1/28	9	Arrangements of monitoring devices, of indicators, of alarm devices	F27B1/28	F27B1/28		398
F27B3/00	7	Hearth-type furnaces, e.g. of reverberatory type (F27B9/00, F27B11/00, F27B13/00, F27B14/00, F27B15/00, F27B21/00 take precedence); Electric arc furnaces {; Tank furnaces}	F27B3/00	F27B3/00		785
F27B3/002	8	{Siemens-Martin type furnaces}	F27B3/00	F27B3/00		284
F27B3/005	9	{Port construction}	F27B3/00	F27B3/00		227
F27B3/007	10	{Removable burner head}	F27B3/00	F27B3/00		15
F27B3/02	8	of single-chamber fixed-hearth type	F27B3/02	F27B3/02		98
F27B3/04	8	of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces	F27B3/04	F27B3/04		249
F27B3/045	9	{Multiple chambers, e.g. one of which is used for charging}	F27B3/04	F27B3/04		247
F27B3/06	8	with movable working chambers or hearths, e.g. tiltable {, oscillating or describing a composed movement}	F27B3/06	F27B3/06		216
F27B3/065	9	{tiltable}	F27B3/06	F27B3/06		248
F27B3/08	8	heated electrically, with or without any other source of heat	F27B3/08	F27B3/08		538
F27B3/085	9	{Arc furnaces}	F27B3/08	F27B3/08		1130
F27B3/10	8	Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces	F27B3/10	F27B3/10		609
F27B3/105	9	{Slag chamber}	F27B3/10	F27B3/10		68
F27B3/12	9	Working chambers or casings; Supports therefor	F27B3/12	F27B3/12		445
F27B2003/125	10	{Hearths}	F27B3/12	F27B3/12		59
F27B3/14	10	Arrangements of linings	F27B3/14	F27B3/14		231
F27B3/16	10	Walls; Roofs	F27B3/16	F27B3/16		248
F27B2003/165	11	{Roofs}	F27B3/16	F27B3/16		32
F27B3/18	9	Arrangements of devices for charging	F27B3/18	F27B3/18		643
F27B3/183	10	{Charging of arc furnaces vertically through the roof, e.g. in three points}	F27B3/18	F27B3/18		186
F27B3/186	11	{Charging in a vertical chamber adjacent to the melting chamber}	F27B3/18	F27B3/18		74
F27B3/19	9	Arrangements of devices for discharging	F27B3/19	F27B3/19		392
F27B3/20	9	Arrangements of heating devices	F27B3/20	F27B3/20		584
F27B3/205	10	{Burners}	F27B3/20	F27B3/20		295
F27B3/22	9	Arrangements of air or gas supply devices	F27B3/22	F27B3/22		396
F27B3/225	10	{Oxygen blowing}	F27B3/22	F27B3/22		235
F27B3/24	9	Cooling arrangements	F27B3/24	F27B3/24		556
F27B3/26	9	Arrangements of heat-exchange apparatus	F27B3/26	F27B3/26		146
F27B3/263	10	{Regenerators}	F27B3/26	F27B3/26		104
F27B3/266	11	{Exhaust gases reversing flow devices}	F27B3/26	F27B3/26		44
F27B3/28	9	Arrangement of controlling, monitoring, alarm or the like devices	F27B3/28	F27B3/28		646
F27B5/00	7	Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated (furnaces through which the charge is moved mechanically or in which the charge moves by gravity F27B9/00)	F27B5/00	F27B5/00		336
F27B5/02	8	of multiple-chamber type	F27B5/02	F27B5/02		121
F27B5/04	8	adapted for treating the charge in vacuum or special atmosphere	F27B5/04	F27B5/04		1371
F27B5/06	8	Details, accessories or equipment specially adapted for furnaces of these types	F27B5/06	F27B5/06		536
F27B2005/062	9	{Cooling elements}	F27B5/06	F27B5/06		90
F27B2005/064	10	{disposed in the furnace, around the chamber, e.g. coils}	F27B5/06	F27B5/06		68
F27B2005/066	10	{disposed around the fan}	F27B5/06	F27B5/06		29
F27B2005/068	10	{for external cooling}	F27B5/06	F27B5/06		25
F27B5/08	9	Arrangements of linings	F27B5/08	F27B5/08		89
F27B5/10	9	Muffles	F27B5/10	F27B5/10		120
F27B5/12	9	Arrangement of devices for charging	F27B5/12	F27B5/12		166
F27B5/13	9	Arrangement of devices for discharging	F27B5/13	F27B5/13		95
F27B5/14	9	Arrangements of heating devices	F27B5/14	F27B5/14		549
F27B2005/143	10	{Heating rods disposed in the chamber}	F27B5/14	F27B5/14		85
F27B2005/146	11	{the heating rods being in the tubes which conduct the heating gases}	F27B5/14	F27B5/14		8
F27B5/16	9	Arrangements of air or gas supply devices	F27B5/16	F27B5/16		399
F27B2005/161	10	{Gas inflow or outflow}	F27B5/16	F27B5/16		61
F27B2005/162	11	{through closable or non-closable openings of the chamber walls}	F27B5/16	F27B5/16		66
F27B2005/163	12	{Controlled openings, e.g. orientable}	F27B5/16	F27B5/16		13
F27B2005/164	11	{Air supply through a set of tubes with openings}	F27B5/16	F27B5/16		16
F27B2005/165	12	{Controlled tubes, e.g. orientable or with closable openings}	F27B5/16	F27B5/16		9
F27B2005/166	10	{Means to circulate the atmosphere}	F27B5/16	F27B5/16		41
F27B2005/167	11	{the atmosphere being recirculated through the treatment chamber by a turbine}	F27B5/16	F27B5/16		69
F27B2005/168	12	{by more than one turbine}	F27B5/16	F27B5/16		9
F27B2005/169	11	{the atmosphere being continuously renewed by exterior means}	F27B5/16	F27B5/16		23
F27B5/18	9	Arrangement of controlling, monitoring, alarm or like devices	F27B5/18	F27B5/18		316
F27B7/00	7	Rotary-drum furnaces, i.e. horizontal or slightly inclined	F27B7/00	F27B7/00		1245
F27B2007/005	8	{for the treatment of slurries or wet materials}	F27B7/00	F27B7/00		45
F27B7/02	8	of multiple-chamber or multiple-drum type	F27B7/02	F27B7/02		398
F27B2007/022	9	{the drum having a non-uniform section along its length}	F27B7/02	F27B7/02		78
F27B2007/025	9	{with different chambers, e.g. treatment zones}	F27B7/02	F27B7/02		78
F27B2007/027	9	{with more than one drum}	F27B7/02	F27B7/02		128
F27B7/04	9	with longitudinal divisions	F27B7/04	F27B7/04		168
F27B2007/041	10	{Longitudinal tubes}	F27B7/04	F27B7/04		33
F27B2007/043	10	{the partition being a cylinder, coaxial to the rotary drum, defining two chambers}	F27B7/04	F27B7/04		21
F27B2007/045	11	{the charge going in one direction in one chamber, then after a turn coming back in the other direction in the other chamber}	F27B7/04	F27B7/04		16
F27B2007/046	10	{Radial partitions}	F27B7/04	F27B7/04		40
F27B2007/048	11	{defining an helical chamber}	F27B7/04	F27B7/04		13
F27B7/06	8	adapted for treating the charge in vacuum or special atmosphere	F27B7/06	F27B7/06		237
F27B7/08	8	externally heated	F27B7/08	F27B7/08		324
F27B7/10	8	internally heated, e.g. by means of passages in the wall	F27B7/10	F27B7/10		287
F27B7/12	8	tiltable	F27B7/12	F27B7/12		150
F27B7/14	8	with means for agitating or moving the charge	F27B7/14	F27B7/14		177
F27B7/16	9	the means being fixed relatively to the drum, {e.g. composite means}(F27B7/04 takes precedence)	F27B7/16	F27B7/16		187
F27B7/161	10	{the means comprising projections jutting out from the wall}	F27B7/16	F27B7/16		156
F27B7/162	11	{the projections consisting of separate lifting elements, e.g. lifting shovels}	F27B7/16	F27B7/16		201
F27B2007/163	12	{using only a ring of lifting elements to lift the charge}	F27B7/16	F27B7/16		17
F27B2007/165	11	{forming a helical lifting projection}	F27B7/16	F27B7/16		60
F27B7/166	10	{the means comprising chains}	F27B7/16	F27B7/16		91
F27B7/167	10	{the means comprising partitions}	F27B7/16	F27B7/16		62
F27B2007/168	11	{Annular partition}	F27B7/16	F27B7/16		22
F27B7/18	9	the means being movable within the drum	F27B7/18	F27B7/18		147
F27B7/20	8	Details, accessories or equipment specially adapted for rotary-drum furnaces	F27B7/20	F27B7/20		1367
F27B2007/2008	9	{Devices for reintroducing dust in the drum}	F27B7/20	F27B7/20		31
F27B7/2016	9	{Arrangements of preheating devices for the charge}	F27B7/20	F27B7/20		687
F27B7/2025	10	{consisting of a single string of cyclones}	F27B7/20	F27B7/20		325
F27B7/2033	11	{with means for precalcining the raw material}	F27B7/20	F27B7/20		444
F27B7/2041	10	{consisting of at least two strings of cyclones with two different admissions of raw material}	F27B7/20	F27B7/20		36
F27B7/205	11	{with precalcining means on the string supplied with exhaust gases from the cooler}	F27B7/20	F27B7/20		54
F27B7/2058	11	{with precalcining means on each string}	F27B7/20	F27B7/20		21
F27B7/2066	10	{comprising a band transporter}	F27B7/20	F27B7/20		97
F27B7/2075	9	{Removing incrustations}	F27B7/20	F27B7/20		144
F27B7/2083	9	{Arrangements for the melting of metals or the treatment of molten metals}	F27B7/20	F27B7/20		229
F27B2007/2091	9	{Means for eliminating compounds from gases by condensation, e.g. alkali metals}	F27B7/20	F27B7/20		13
F27B7/22	9	Rotary drums; Supports therefor	F27B7/22	F27B7/22		649
F27B7/2206	10	{Bearing rings}	F27B7/22	F27B7/22		159
F27B2007/2213	11	{mounted floatingly on the drum}	F27B7/22	F27B7/22		7
F27B2007/222	12	{the mounting comprising radially resilient elements, e.g. springs}	F27B7/22	F27B7/22		7
F27B2007/2226	12	{the mounting comprising elements to maintain the ring between series of abutments}	F27B7/22	F27B7/22		47
F27B2007/2233	11	{the ring being fixed to the drum, e.g. welded}	F27B7/22	F27B7/22		34
F27B7/224	10	{Discharge ends}	F27B7/22	F27B7/22		52
F27B2007/2246	10	{Support rollers}	F27B7/22	F27B7/22		64
F27B2007/2253	11	{mounted movable, e.g. resiliently on the ground}	F27B7/22	F27B7/22		24
F27B2007/226	12	{constituted of series of two rollers mounted on tiltable support along the drum}	F27B7/22	F27B7/22		12
F27B2007/2266	12	{the mounting allowing a movement of the rollers support in a horizontal plane}	F27B7/22	F27B7/22		11
F27B2007/2273	11	{with arrangements, e.g. rollers, to maintain the drum against longitudinal movement}	F27B7/22	F27B7/22		54
F27B2007/228	11	{comprising rollable bodies}	F27B7/22	F27B7/22		28
F27B2007/2286	11	{supporting the drum directly, without the use of a bearing ring}	F27B7/22	F27B7/22		16
F27B2007/2293	10	{the furnace being suspended}	F27B7/22	F27B7/22		12
F27B7/24	10	Seals between rotary and stationary parts	F27B7/24	F27B7/24		499
F27B7/26	9	Drives	F27B7/26	F27B7/26		455
F27B2007/261	10	{working with a ring embracing the drum}	F27B7/26	F27B7/26		43
F27B2007/262	11	{A gear ring combined with a dented wheel drive}	F27B7/26	F27B7/26		77
F27B2007/263	11	{A gear ring combined with a ram drive}	F27B7/26	F27B7/26		5
F27B2007/265	11	{the ring being mounted floatingly}	F27B7/26	F27B7/26		11
F27B2007/266	11	{the ring being a bearing ring}	F27B7/26	F27B7/26		10
F27B2007/267	11	{A gear ring combined with a chain drive}	F27B7/26	F27B7/26		8
F27B2007/268	10	{Details of the motor or the pinions}	F27B7/26	F27B7/26		83
F27B7/28	9	Arrangements of linings	F27B7/28	F27B7/28		455
F27B7/30	9	Arrangements of partitions	F27B7/30	F27B7/30		49
F27B7/32	9	Arrangement of devices for charging	F27B7/32	F27B7/32		222
F27B7/3205	10	{Charging}	F27B7/32	F27B7/32		609
F27B2007/3211	11	{at the open end of the drum}	F27B7/32	F27B7/32		105
F27B2007/3217	12	{axially, optionally at some distance in the kiln}	F27B7/32	F27B7/32		44
F27B2007/3223	13	{the charging device being movable axially, e.g. reciprocable}	F27B7/32	F27B7/32		12
F27B2007/3229	13	{via a centrifugal device}	F27B7/32	F27B7/32		4
F27B2007/3235	13	{the introducing device comprising a spray or a lance}	F27B7/32	F27B7/32		21
F27B2007/3241	13	{in the flame of the burner}	F27B7/32	F27B7/32		14
F27B2007/3247	11	{through a lateral opening in the drum}	F27B7/32	F27B7/32		40
F27B2007/3252	12	{with lifting scoops attached to the drum}	F27B7/32	F27B7/32		28
F27B2007/3258	11	{at the open end of the drum}	F27B7/32	F27B7/32		19
F27B2007/3264	12	{using special discharge means located around the discharge end, e.g. lifting scoops or a transversal annular partition}	F27B7/32	F27B7/32		12
F27B2007/327	11	{centrifugally through lateral openings in the drum}	F27B7/32	F27B7/32		30
F27B2007/3276	11	{with a collector means extending longitudinally into the drum}	F27B7/32	F27B7/32		10
F27B2007/3282	10	{Details}	F27B7/32	F27B7/32		37
F27B2007/3288	11	{Sieves or grading means}	F27B7/32	F27B7/32		24
F27B2007/3294	11	{Means to fluidise the charge in the air}	F27B7/32	F27B7/32		11
F27B7/33	9	Arrangement of devices for discharging	F27B7/33	F27B7/33		369
F27B7/34	9	Arrangements of heating devices	F27B7/34	F27B7/34		1105
F27B7/36	9	Arrangements of air or gas supply devices	F27B7/36	F27B7/36		535
F27B7/362	10	{Introducing gas into the drum axially or through the wall}	F27B7/36	F27B7/36		191
F27B2007/365	11	{longitudinally}	F27B7/36	F27B7/36		70
F27B2007/367	11	{transversally through the wall of the drum}	F27B7/36	F27B7/36		82
F27B7/38	9	Arrangements of cooling devices	F27B7/38	F27B7/38		519
F27B7/383	10	{Cooling devices for the charge}	F27B7/38	F27B7/38		265
F27B7/386	11	{Rotary-drum cooler}	F27B7/38	F27B7/38		67
F27B7/40	10	Planetary coolers	F27B7/40	F27B7/40		232
F27B7/42	9	Arrangement of controlling, monitoring, alarm or like devices	F27B7/42	F27B7/42		879
F27B9/00	7	Furnaces through which the charge is moved mechanically, e.g. of tunnel type (rotary-drum furnaces with means for agitating or moving the charge F27B7/14); Similar furnaces in which the charge moves by gravity	F27B9/00	F27B9/00		181
F27B9/02	8	of multiple-track type; of multiple-chamber type; Combinations of furnaces	F27B9/02	F27B9/02		337
F27B9/021	9	{having two or more parallel tracks}	F27B9/02	F27B9/02		258
F27B9/022	10	{With two tracks moving in opposite directions}	F27B9/02	F27B9/02		130
F27B9/023	11	{with a U turn at one end}	F27B9/02	F27B9/02		94
F27B9/024	12	{with superimposed tracks}	F27B9/02	F27B9/02		55
F27B9/025	10	{having two or more superimposed tracks (F27B9/024 takes precedence)}	F27B9/02	F27B9/02		136
F27B2009/026	9	{Two or more conveyors, e.g. mounted successively}	F27B9/02	F27B9/02		34
F27B2009/027	10	{working in parallel}	F27B9/02	F27B9/02		10
F27B9/028	9	{Multi-chamber type furnaces, (F27B9/029 takes precedence)}	F27B9/02	F27B9/02		521
F27B9/029	9	{Multicellular type furnaces constructed with add-on modules}	F27B9/02	F27B9/02		122
F27B9/04	8	adapted for treating the charge in vacuum or special atmosphere	F27B9/04	F27B9/04		143
F27B9/042	9	{Vacuum furnaces}	F27B9/04	F27B9/04		106
F27B9/045	9	{Furnaces with controlled atmosphere}	F27B9/04	F27B9/04		468
F27B9/047	10	{the atmosphere consisting of protective gases}	F27B9/04	F27B9/04		197
F27B9/06	8	heated without contact between combustion gases and charge; electrically heated	F27B9/06	F27B9/06		162
F27B9/061	9	{with at least two longitudinal chambers carrying combustion gases, i.e. of the Dressler type}	F27B9/06	F27B9/06		98
F27B9/062	9	{electrically heated}	F27B9/06	F27B9/06		241
F27B9/063	10	{Resistor heating, e.g. with resistors also emitting IR rays}	F27B9/06	F27B9/06		287
F27B9/065	11	{the resistance being transported by the conveyor}	F27B9/06	F27B9/06		24
F27B9/066	10	{heated by lamps}	F27B9/06	F27B9/06		70
F27B9/067	10	{heated by induction}	F27B9/06	F27B9/06		155
F27B9/068	9	{heated by radiant tubes, the tube being heated by a hot medium, e.g. hot gases}	F27B9/06	F27B9/06		106
F27B9/08	9	heated through chamber walls	F27B9/08	F27B9/08		64
F27B9/082	10	{Muffle furnaces}	F27B9/08	F27B9/08		244
F27B9/084	11	{the muffle being fixed and in a single piece}	F27B9/08	F27B9/08		40
F27B9/086	11	{with two or more fixed muffles}	F27B9/08	F27B9/08		16
F27B9/088	11	{Series of separate muffles conveyed through the furnace}	F27B9/08	F27B9/08		34
F27B9/10	9	heated by hot air or gas	F27B9/10	F27B9/10		586
F27B9/12	8	with special arrangements for preheating or cooling the charge	F27B9/12	F27B9/12		916
F27B2009/122	9	{Preheating}	F27B9/12	F27B9/12		373
F27B2009/124	9	{Cooling}	F27B9/12	F27B9/12		470
F27B2009/126	10	{involving the circulation of cooling gases, e.g. air}	F27B9/12	F27B9/12		158
F27B2009/128	11	{the gases being further utilised as oxidants in the burners}	F27B9/12	F27B9/12		21
F27B9/14	8	characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment (for treating continuous lengths of work F27B9/28)	F27B9/14	F27B9/14		255
F27B9/142	9	{the charge moving along a vertical axis}	F27B9/14	F27B9/14		189
F27B9/145	9	{the charge moving along a serpentine path}	F27B9/14	F27B9/14		59
F27B9/147	9	{the charge moving on an inclined floor}	F27B9/14	F27B9/14		138
F27B9/16	9	the charge moving in a circular or arcuate path	F27B9/16	F27B9/16		734
F27B9/18	10	under the action of scrapers or pushers	F27B9/18	F27B9/18		128
F27B9/185	11	{multiple hearth type furnaces}	F27B9/18	F27B9/18		89
F27B9/20	9	the charge moving in a substantially straight path	F27B9/20	F27B9/20		560
F27B9/201	10	{walking beam furnace}	F27B9/20	F27B9/20		294
F27B9/202	11	{Conveyor mechanisms therefor}	F27B9/20	F27B9/20		63
F27B9/203	12	{having ramps (F27B9/206 takes precedence)}	F27B9/20	F27B9/20		77
F27B9/205	12	{having excentrics or lever arms (F27B9/206 takes precedence)}	F27B9/20	F27B9/20		141
F27B9/206	12	{consisting of a single central beam}	F27B9/20	F27B9/20		19
F27B9/207	12	{consisting of two or more conveyors}	F27B9/20	F27B9/20		79
F27B9/208	11	{the workpieces being rotated during their advance}	F27B9/20	F27B9/20		52
F27B9/22	10	{on rails, e.g.} under the action of scrapers or pushers (F27B9/26 takes precedence)	F27B9/22	F27B9/22		544
F27B9/222	11	{the path comprising a section specially adapted for effecting equalisation of the temperature of the charge}	F27B9/22	F27B9/22		63
F27B9/225	11	{the charge being subjected to an additional manipulation along the path}	F27B9/22	F27B9/22		73
F27B9/227	11	{with rotation of the charge (F27B9/147 takes precedence)}	F27B9/22	F27B9/22		48
F27B9/24	10	being carried by a conveyor	F27B9/24	F27B9/24		1362
F27B9/2407	11	{the conveyor being constituted by rollers (roller hearth furnace)}	F27B9/24	F27B9/24		1091
F27B9/2415	12	{the charge rotating about an axis transversal to the axis of advancement of the charge}	F27B9/24	F27B9/24		64
F27B9/2423	12	{the charge rotating about an axis parallel to the axis of advancement of the charge}	F27B9/24	F27B9/24		29
F27B9/243	11	{Endless-strand conveyor}	F27B9/24	F27B9/24		845
F27B2009/2438	12	{with means to transfer the heat from the outcoming band to the incoming band}	F27B9/24	F27B9/24		2
F27B2009/2446	12	{with means to control the tension of the band}	F27B9/24	F27B9/24		14
F27B9/2453	11	{Vibrating conveyor (shaker hearth furnace)}	F27B9/24	F27B9/24		94
F27B9/2461	11	{the charge being suspended from the conveyor}	F27B9/24	F27B9/24		94
F27B9/2469	11	{the conveyor being constituted by rollable bodies}	F27B9/24	F27B9/24		95
F27B9/2476	11	{the conveyor being constituted by air cushion}	F27B9/24	F27B9/24		55
F27B2009/2484	11	{the conveyor being a helical device}	F27B9/24	F27B9/24		59
F27B2009/2492	11	{the conveyor being constituted by series of little rams or ratchets, moving the charge along}	F27B9/24	F27B9/24		27
F27B9/26	10	on or in trucks, sleds, or containers	F27B9/26	F27B9/26		533
F27B9/262	11	{on or in trucks}	F27B9/26	F27B9/26		856
F27B2009/264	12	{the truck carrying a partition}	F27B9/26	F27B9/26		18
F27B2009/266	12	{the truck having conducts for guiding the oven atmosphere}	F27B9/26	F27B9/26		17
F27B2009/268	13	{through the structure of the car and through the charge}	F27B9/26	F27B9/26		19
F27B9/28	8	for treating continuous lengths of work	F27B9/28	F27B9/28		520
F27B9/30	8	Details, accessories or equipment specially adapted for furnaces of these types	F27B9/30	F27B9/30		1725
F27B9/3005	9	{arrangements for circulating gases}	F27B9/30	F27B9/30		954
F27B9/3011	10	{arrangements for circulating gases transversally}	F27B9/30	F27B9/30		378
F27B2009/3016	11	{with arrangements to circulate gases through the charge}	F27B9/30	F27B9/30		29
F27B2009/3022	11	{with arrangements to maintain oxidising reducing or neutral zones}	F27B9/30	F27B9/30		23
F27B2009/3027	10	{Use of registers, partitions}	F27B9/30	F27B9/30		81
F27B2009/3033	10	{Fumes circulating in the same direction as the charge}	F27B9/30	F27B9/30		9
F27B2009/3038	10	{Fumes or gases alternatively changing their longitudinal direction}	F27B9/30	F27B9/30		1
F27B9/3044	9	{Furnace regenerators}	F27B9/30	F27B9/30		89
F27B2009/305	9	{Particular conformation of the furnace}	F27B9/30	F27B9/30		64
F27B2009/3055	10	{Non-uniform section through the length of the furnace}	F27B9/30	F27B9/30		35
F27B2009/3061	10	{Furnaces with longitudinal grooves}	F27B9/30	F27B9/30		5
F27B2009/3066	9	{Cooling the under-structure of the kiln, e.g. under the cars}	F27B9/30	F27B9/30		28
F27B2009/3072	9	{Balancing the pressure between the upper part and the lower part of the kiln, above and under the track}	F27B9/30	F27B9/30		7
F27B9/3077	9	{Arrangements for treating electronic components, e.g. semiconductors}	F27B9/30	F27B9/30		78
F27B2009/3083	9	{Arrangements to handle skid marks}	F27B9/30	F27B9/30		33
F27B2009/3088	9	{Drying arrangements}	F27B9/30	F27B9/30		70
F27B2009/3094	9	{Means to store a part of the charge in the furnace}	F27B9/30	F27B9/30		26
F27B9/32	9	Casings	F27B9/32	F27B9/32		172
F27B9/34	10	Arrangements of linings	F27B9/34	F27B9/34		237
F27B9/36	9	Arrangements of heating devices	F27B9/36	F27B9/36		1897
F27B2009/3607	10	{Heaters located above the track of the charge}	F27B9/36	F27B9/36		129
F27B2009/3615	11	{Burner in the ceiling directed vertically downwards}	F27B9/36	F27B9/36		54
F27B2009/3623	10	{Heaters located under the track}	F27B9/36	F27B9/36		61
F27B2009/363	11	{Burners in the hearth directed towards the ceiling}	F27B9/36	F27B9/36		8
F27B2009/3638	10	{Heaters located above and under the track}	F27B9/36	F27B9/36		159
F27B2009/3646	10	{Heating the ceiling or the walls for a reverberatory effect}	F27B9/36	F27B9/36		21
F27B2009/3653	10	{Preheated fuel}	F27B9/36	F27B9/36		11
F27B2009/3661	11	{preheated with the exhaust gases}	F27B9/36	F27B9/36		31
F27B2009/3669	11	{preheated with the gases of the cooling zone}	F27B9/36	F27B9/36		3
F27B2009/3676	11	{preheated with the gases of the preheating zone}	F27B9/36	F27B9/36		3
F27B2009/3684	10	{Combustion within a combustion chamber with outlets in the kiln chamber}	F27B9/36	F27B9/36		34
F27B2009/3692	10	{The charge containing combustible materials}	F27B9/36	F27B9/36		25
F27B9/38	9	Arrangements of devices for charging	F27B9/38	F27B9/38		1068
F27B2009/382	10	{Charging}	F27B9/38	F27B9/38		313
F27B2009/384	10	{Discharging}	F27B9/38	F27B9/38		130
F27B2009/386	10	{Lateral intake or outtake}	F27B9/38	F27B9/38		39
F27B2009/388	11	{Centrally in the lateral wall}	F27B9/38	F27B9/38		5
F27B9/39	9	Arrangements of devices for discharging	F27B9/39	F27B9/39		391
F27B9/40	9	Arrangements of controlling or monitoring devices	F27B9/40	F27B9/40		1595
F27B11/00	7	Bell-type furnaces	F27B11/00	F27B11/00		231
F27B13/00	7	Furnaces with both stationary charge and progression of heating, e.g. of ring type or of the type in which a segmental kiln moves over a stationary charge	F27B13/00	F27B13/00		97
F27B13/02	8	of multiple-chamber type with permanent partitions; Combinations of furnaces	F27B13/02	F27B13/02		534
F27B13/04	8	of single-chamber type with temporary partitions	F27B13/04	F27B13/04		49
F27B13/06	8	Details, accessories or equipment specially adapted for furnaces of this type	F27B13/06	F27B13/06		323
F27B13/08	9	Casings	F27B13/08	F27B13/08		22
F27B13/10	10	Arrangements of linings	F27B13/10	F27B13/10		28
F27B13/12	9	Arrangements of heating devices	F27B13/12	F27B13/12		149
F27B13/14	9	Arrangement of controlling, monitoring, alarm or like devices	F27B13/14	F27B13/14		53
F27B14/00	7	Crucible or pot furnaces	F27B14/00	F27B14/00		1335
F27B2014/002	8	{Smelting process, e.g. sequences to melt a specific material}	F27B14/00	F27B14/00		163
F27B2014/004	9	{Process involving a smelting step, e.g. vaporisation}	F27B14/00	F27B14/00		98
F27B2014/006	9	{involving a salt bath or help metal bath}	F27B14/00	F27B14/00		2
F27B2014/008	8	{Continuous casting}	F27B14/00	F27B14/00		76
F27B14/02	8	with tilting or rocking arrangements (F27B14/04 takes precedence)	F27B14/02	F27B14/02		644
F27B14/04	8	adapted for treating the charge in vacuum or special atmosphere	F27B14/04	F27B14/04		852
F27B2014/045	9	{Vacuum}	F27B14/04	F27B14/04		396
F27B14/06	8	heated electrically, e.g. induction crucible furnaces with or without any other source of heat (F27B14/04 takes precedence)	F27B14/06	F27B14/06		958
F27B14/061	9	{Induction furnaces}	F27B14/06	F27B14/06		950
F27B14/063	10	{Skull melting type}	F27B14/06	F27B14/06		93
F27B14/065	10	{Channel type}	F27B14/06	F27B14/06		105
F27B2014/066	10	{Construction of the induction furnace}	F27B14/06	F27B14/06		57
F27B2014/068	9	{with the use of an electrode producing a current in the melt}	F27B14/06	F27B14/06		54
F27B14/08	8	Details specially adapted for crucible or pot furnaces	F27B14/08	F27B14/08		2434
F27B14/0806	9	{Charging or discharging devices}	F27B14/08	F27B14/08		1604
F27B2014/0812	10	{Continuously charging}	F27B14/08	F27B14/08		256
F27B2014/0818	10	{Discharging}	F27B14/08	F27B14/08		637
F27B2014/0825	9	{Crucible or pot support}	F27B14/08	F27B14/08		158
F27B2014/0831	10	{Support or means for the transport of crucibles}	F27B14/08	F27B14/08		84
F27B2014/0837	9	{Cooling arrangements}	F27B14/08	F27B14/08		393
F27B2014/0843	9	{Lining or casing}	F27B14/08	F27B14/08		290
F27B2014/085	9	{Preheating of the charge}	F27B14/08	F27B14/08		129
F27B2014/0856	10	{Preheating of the crucible}	F27B14/08	F27B14/08		14
F27B2014/0862	9	{Flux guides}	F27B14/08	F27B14/08		31
F27B2014/0868	9	{Magnetic shields}	F27B14/08	F27B14/08		12
F27B2014/0875	9	{Two zones or chambers, e.g. one used for charging}	F27B14/08	F27B14/08		88
F27B2014/0881	9	{Two or more crucibles}	F27B14/08	F27B14/08		87
F27B2014/0887	9	{Movement of the melt}	F27B14/08	F27B14/08		173
F27B2014/0893	9	{Heat-conductive material disposed on the surface of the melt}	F27B14/08	F27B14/08		9
F27B14/10	9	Crucibles	F27B14/10	F27B14/10		1607
F27B2014/102	10	{Form of the crucibles}	F27B14/10	F27B14/10		153
F27B2014/104	10	{Crucible linings}	F27B14/10	F27B14/10		182
F27B2014/106	10	{Ladles}	F27B14/10	F27B14/10		44
F27B2014/108	10	{Cold crucibles (transparent to electromagnetic radiations)}	F27B14/10	F27B14/10		46
F27B14/12	10	Covers therefor	F27B14/12	F27B14/12		349
F27B14/14	9	Arrangements of heating devices	F27B14/14	F27B14/14		1619
F27B14/143	10	{Heating of the crucible by convection of combustion gases}	F27B14/14	F27B14/14		453
F27B2014/146	10	{Recuperation of lost heat, e.g. regenerators}	F27B14/14	F27B14/14		129
F27B14/20	9	Arrangement of controlling, monitoring, alarm or like devices	F27B14/20	F27B14/20		1223
F27B15/00	7	Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion	F27B15/00	F27B15/00		435
F27B15/003	8	{Cyclones or chain of cyclones}	F27B15/00	F27B15/00		138
F27B15/006	8	{Equipment for treating dispersed material falling under gravity with ascending gases}	F27B15/00	F27B15/00		65
F27B15/02	8	Details, accessories or equipment specially adapted for furnaces of these types	F27B15/02	F27B15/02		221
F27B15/04	9	Casings; Supports therefor	F27B15/04	F27B15/04		18
F27B15/06	10	Arrangements of linings	F27B15/06	F27B15/06		30
F27B15/08	9	Arrangements of devices for charging	F27B15/08	F27B15/08		126
F27B15/09	9	Arrangements of devices for discharging	F27B15/09	F27B15/09		54
F27B15/10	9	Arrangements of air or gas supply devices	F27B15/10	F27B15/10		416
F27B15/12	9	Arrangements of dust collectors	F27B15/12	F27B15/12		54
F27B15/14	9	Arrangements of heating devices	F27B15/14	F27B15/14		202
F27B15/16	9	Arrangements of cooling devices	F27B15/16	F27B15/16		86
F27B15/18	9	Arrangements of controlling devices	F27B15/18	F27B15/18		87
F27B15/20	9	Arrangements of monitoring devices, of indicators, of alarm devices	F27B15/20	F27B15/20		49
F27B17/00	7	Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00(structural combinations of furnaces F27B19/02)	F27B17/00	F27B17/00		2824
F27B17/0008	8	{Open field furnace for burning bricks}	F27B17/00	F27B17/00		43
F27B17/0016	8	{Chamber type furnaces}	F27B17/00	F27B17/00		882
F27B17/0025	9	{specially adapted for treating semiconductor wafers}	F27B17/00	F27B17/00		779
F27B17/0033	9	{the floor of the furnaces consisting of the support carrying the charge, e.g. car type furnaces}	F27B17/00	F27B17/00		129
F27B17/0041	9	{specially adapted for burning bricks or pottery (F27B17/0033 takes precedence)}	F27B17/00	F27B17/00		511
F27B17/005	10	{with cylindrical chambers}	F27B17/00	F27B17/00		119
F27B17/0058	11	{with superposed cylindrical chambers}	F27B17/00	F27B17/00		36
F27B17/0066	10	{arrangement of the charge, e.g. bricks}	F27B17/00	F27B17/00		45
F27B17/0075	10	{Heating devices therefor}	F27B17/00	F27B17/00		229
F27B17/0083	9	{with means for circulating the atmosphere}	F27B17/00	F27B17/00		276
F27B2017/0091	9	{Series of chambers, e.g. associated in their use}	F27B17/00	F27B17/00		104
F27B17/02	8	specially designed for laboratory use	F27B17/02	F27B17/02		854
F27B17/025	9	{for dental workpieces}	F27B17/02	F27B17/02		267
F27B19/00	7	Combinations of different kinds of furnaces that are not all covered by any single one of main groups F27B1/00 - F27B17/00	F27B19/00	F27B19/00		101
F27B19/02	8	combined in one structure	F27B19/02	F27B19/02		143
F27B19/04	8	arranged for associated working	F27B19/04	F27B19/04		462
F27B21/00	7	Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction	F27B21/00	F27B21/00		1309
F27B21/02	8	Sintering grates or tables	F27B21/02	F27B21/02		496
F27B21/04	8	Sintering pots or sintering pans	F27B21/04	F27B21/04		85
F27B21/06	8	Endless-strand sintering machines	F27B21/06	F27B21/06		1324
