EP0342343A2 - Four de traitement thermique à sole à rouleaux, en particulier pour des petits articles céramiques et métalliques - Google Patents

Four de traitement thermique à sole à rouleaux, en particulier pour des petits articles céramiques et métalliques

Info

Publication number: EP0342343A2
Authority: EP; European Patent Office
Prior art keywords: roller; hearth furnace; furnace according; rollers; roller hearth
Prior art date: 1988-05-14
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP89105863A

Other languages

German (de)

English (en)

Other versions

EP0342343A3 (en

EP0342343B1 (fr

Inventor

Joachim Dr.-Ing. Wünning

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1988-05-14

Filing date

1989-04-04

Publication date

1989-11-23

1989-04-04 Application filed by Individual filed Critical Individual

1989-04-04 Priority to AT89105863T priority Critical patent/ATE93310T1/de

1989-05-12 Priority to SU894614111A priority patent/SU1760998A3/ru

1989-05-12 Priority to JP01117644A priority patent/JP3090271B2/ja

1989-11-23 Publication of EP0342343A2 publication Critical patent/EP0342343A2/fr

1990-03-28 Publication of EP0342343A3 publication Critical patent/EP0342343A3/de

1993-08-18 Application granted granted Critical

1993-08-18 Publication of EP0342343B1 publication Critical patent/EP0342343B1/fr

2009-04-04 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)

Definitions

the invention relates to a roller hearth furnace according to the preamble of claim 1.
a roller hearth furnace of this type is known from DE-PS 28 40 282.
refractory bricks are provided in the refractory lining of the side walls of the roller hearth furnace, which are provided with openings for receiving the rollers.
the refractory bricks are arranged in the opposite side walls in such a way that openings assigned to one another are aligned with one another. The rollers can then be inserted through the openings from the outside and removed again in the same way if a repair is necessary.
cavities are provided in the refractory bricks, into which insulating and refractory material, such as kaolin wool, is pressed that can then fit closely to the roll diameter.
a fundamental disadvantage of such roller hearth designs is that, for reasons of strength, the diameter of the rollers themselves cannot fall below a certain value, and the distance between the rollers cannot be chosen to be as small as desired. Since the rollers are always pulled outwards, the openings for mounting the rollers always weaken the supporting cross-section of the side walls, which must not exceed a certain dimension. A certain distance between the rollers must therefore be due to the between the bearing opening The remaining supporting web part necessary for the rollers must be present. The necessary distance between the rollers and their diameter determines the size of the parts to be treated, if separate support plates are not to be provided, which run over the rollers and accommodate the parts to be treated. The disadvantage in this case is that the mass of the support plates must always be heated up when passing through the roller hearth furnace, which causes unnecessary heat loss.
roller hearth furnaces in which the parts to be treated are pushed through the furnace on transport elements
the space problem existing in roller hearth furnaces does not occur, because for the replacement of the rollers next to the No space must be made available to the oven.
the transport elements provided there instead of kiln cars must also be heated up in the manner of rust when passing through the tunnel furnace.
the arrangement of rotatable rollers in lateral spacers provided there does not change anything.
the features provided there can also not be used for roller hearth furnaces, in which the rollers are arranged in a stationary manner, because a replacement of stationary rollers would not be possible because of the guide provided for the rust-like transport elements only inside the furnace.
the invention is therefore based on the object of designing a roller hearth furnace of the type mentioned in such a way that, with the smallest possible roller diameter, the mutual spacing of the rollers can also be chosen to be very small, without strength problems in the manufacture of the furnace walls or difficulties when changing rollers .
the characteristic features of the patent are in a roller hearth furnace of the type mentioned Claim 1 provided.
This configuration has the advantage that the load-bearing capacity of the furnace side walls is independent of the storage of the rollers, because these can be accommodated in separate support beams which, together with the rollers, form module-like modules for the production of a roller bed which can be used in the furnace.
the support beams for the rollers in contrast to the materials previously used for the lining of the side walls, can be made from a material of considerably higher strength, so that, despite the closely arranged rollers, they can also have sufficient load-bearing capacity to absorb the supporting forces of the side walls.
the mounting frame can be designed with the roller table elements as a prefabricated unit that is installed in a furnace housing.
the drive for one or for all roles of a component can be integrated on the bearing beam on one side.
the features of claim 9 allow cooling of the mounting frame and the drive elements held in this type in a particularly simple and effective manner.
dependent claim 13 enable a relatively light design for the rolling table components.
the features of claims 14 and 15 also open the possibility in the embodiment not provided with a mounting frame that only the rollers assigned to a roller table component are driven together, which is also possible, for example, by assigning a separate drive unit which, as in the case of Type with mounting frame in the area outside the furnace walls can be attached to the front of the roller table component.
This configuration then also opens up the possibility of increasing the roller speed, for example in the case of the roller table components which are closer to the exit of the furnace, so that the parts are removed quickly.
the configuration according to the invention also enables the individual drive just mentioned.
the invention also makes it possible to choose the spacing of the individual rollers, which may have small diameters, from one another to be very small. This brings with it certain difficulties in the generation and maintenance of a uniform furnace atmosphere, since that for the passage of the hot gases from the space below the roller bed into the space above it is severely restricted. It is therefore expedient if the features of claims 16 and 17 are provided by means of which forced circulation of the furnace atmosphere is achieved is, the roller conveyor itself exerts a certain sieving effect to even out the flow.
a roller hearth furnace which is provided with a housing (1) made of refractory and heat-insulating materials, which consists of an upper housing part (1a) and a lower housing part (1b).
the lower housing part (1b) is narrower than the upper housing part (1a), so that the lower housing part (1b), seen in the transport direction (21) of the parts through the housing (1), laterally from the upper housing part ( 1a) towered outwards becomes.
An interior (24) heated by heating devices (23) is formed in the housing (1), in which a roller bed (3) is provided for guiding the parts not to be treated.
the roller bed (3) is constructed from several, in the exemplary embodiment from five roller table components (4), which are arranged one behind the other, adjacent and in a common plane.
the roller table components (4) are held laterally (see Fig. 3) in recesses (6) of the housing walls (7 and 7 ') and are thereby fixed in place in the housing (1).
each of the roller table components (4) consists of a plurality of rollers (2) which are tubular in shape and are rotatably mounted with their two ends (2a) on bearing beams (5). In the embodiment shown, this can be done by pushing end journals (13) into the open ends (2a) of the rollers (2), which are rotatably held in bushings (27) within the bearing beams (5).
the bearing beams (5) are in turn firmly connected to support beams (10) via fastening anchors (15) which are further assigned to each of the bearing beams (5) towards the center of the roller.
These support beams also serve as a heat shield with respect to the treatment room (24) in the furnace and as a wear-resistant leading edge for the material to be treated.
Each of the support beams (10) and each of the support beams (5) has as many openings as rollers (2) are assigned to a roller table assembly (4).
Insulating adapters (12) are used between the support beams (10) and the bearing beams (5), which have the task of providing good thermal insulation from the interior (24) to the outside.
These insulating fittings (12) are made from two half-shells (12a and 12b) because narrow webs, such as webs (10a), cannot be produced from the material used for the thermal insulation for reasons of strength.
a common drive unit (25) is assigned to one of the two bearing beams (5), via which each of the bearing journals (13 ') is driven, namely by the fact that corresponding gear wheels (28) each for the rotary movement of each individual bearing pin (13 ') are provided. All gear wheels (28) are in rotary connection with one another, in such a way that all bearing journals (13 ') receive the same direction of rotation.
the gear wheels (28) are driven by a common drive pin (26) which can be driven by a drive motor (29) which is assigned to the roller table component (4). As shown in FIG. 2, five drive motors (29) are therefore provided in the roller hearth furnace of FIGS.
roller table components (4) are provided, all of which are located outside the housing (1) and are separated from the heated interior ( 24) are separated by the supporting beams (10) serving as heat shields and by the insulating fittings (12) and the bearing beams (5).
an opening (9) is provided in the housing walls (7 and 7 ') for each of the roller table components, through which each of the roller table components (4) is pulled outwards transversely to the transport direction (21), waited and can be replaced if necessary.
the openings (9) in their width and height are adapted to the dimensions of the bearing beams (5) and sealing covers (30) are provided, which also serve the drive motors (29), the drive units (25) and the Keep the bearing beam (5) in its correct position.
Wide wall parts (31) therefore remain between the openings (9), which can ensure the necessary stability of the furnace structure towards the inside.
an outer support frame (39) with which the upper housing part (1a) can be supported on the lower housing part (1b). Tie rods (32), which run downwards from the upper part of the housing, can be used to lift the insulation off the bearing beams (5) and support beams (10) if the corresponding roller table components (4) are to be removed from the side.
the design according to the invention creates a roller hearth furnace with a continuous roller bed, in which, however, the storage and arrangement of the rollers is independent of the design of the side walls of the housing (1).
the rollers (2) are stored in separate components and it can be seen from FIG. 6 that it is possible in this way to arrange the rollers (2) at a short distance from one another and to mount them in a rotatable manner. This is possible because the outer support and insulation construction of the housing (1) need not be taken into account in the selected embodiment.
the possibility of deflection for the rollers (2) can also be so low be held as possible. Small roll diameters can therefore also be realized. Together with the small distance between the rollers, this means that the new roller bed (3) is also very suitable for conveying small parts to be treated. Here the distance between the rollers is always chosen much smaller than the roller diameter.
the distance between the rollers (2) is only very small and, as stated, is significantly smaller than the roller diameter, difficulties can arise within the treatment room (24) with regard to the formation of a uniform furnace atmosphere.
the subspace of the interior (24) located under the roller bed (3) is separated from the subspace located above it by the roller bed and the possibilities for exchanging the atmosphere within the treatment room (24) are limited by the narrow distances between the rollers (2).
a gas supply nozzle (17) is therefore inserted in the space (24b) below the roller bed (3), which is connected upstream and downstream of transverse bulkheads (19 and 20) in the transport direction (21) and in the space (24b) , through which a space (37) is created below the roller bed, in which, when gas is supplied through the nozzle (17), an underpressure and an overpressure subspace is created, which ensures that a circulation in the sense of Arrows (38) arise in the partial area of the room (37).
this measure serves to homogenize the furnace atmosphere, so that the small parts (18) are exposed to uniform conditions as possible when they pass through the treatment room (24).
the roller bed (3) acts as a type of sieve through which the gas conveyed upwards from the space (37) reaches the space above the roller bed (3) evenly.
FIGS. 10 to 12 a somewhat modified embodiment is shown, in which seven consecutive roller table components (4) are provided, which are constructed in principle like the roller table components (4) explained with reference to FIGS. 5 to 6.
FIG. 13 shows a mounting frame (45) made of metal profiles, which can be installed in a heat-insulated housing in a manner not shown in detail.
the mounting frame (45) has on each of its two long sides two parallel longitudinal spars (46) which are connected to each other by transverse webs (47) or (48) perpendicular to them, the transverse webs (47) on one long side and the crossbars (48) are arranged on the other long side of the mounting frame (45). Both longitudinal bars (46) are connected to a frame by cross bars (49). As can be seen from Fig.
two adjacent crossbars (47) are arranged on each long side at a greater distance (A) from one another, while the next crossbar adjacent to one of the crossbars arranged at a distance (A) is at a smaller distance this has.
the distances (A) and (B) occur alternately and the arrangement is such that two crossbars (47) on one long side, the distance (A) to each other have two transverse webs (48) with the distance (b) on the other long side.
the distance (A) is chosen for this purpose so that it is larger than the width (C) of a roller table component (4 ').
the distance (B), on the other hand, is smaller than this width, so that when a roller table component (4 ') is inserted between two cross bars arranged at a distance (A), the opposite two cross bars can act as a stop.
roller table components are provided on the side assigned to the insertion side with a bearing bar (5 ') which is part of a gearbox (50) which is closed at the front by a cover (51) .
the gearbox (50) has bearing points (52) and (53) for the deflection wheels (54) and (55) of a drive chain (56), each of which, similar to the embodiment according to FIG. 1 to 3, which drives a roller table component (4 ') associated bearing journal (57) of all rollers (2').
the deflection wheel (54) is rotatably mounted on a bearing pin which sits on the gear box (50).
the deflection wheel (55) serves as a drive wheel for the chain (56) and is connected to the gear (59) of a drive motor (60) via a drive shaft (58).
the roller table components (4 ') can be inserted from one side into the mounting frame (45) until side stop flanges (61) of the gearbox (50) on the associated Attach cross bars (47). In this position, the roller table components can be secured to the longitudinal spars (46) by screws, not shown, which are inserted through corresponding bores (62).
a closure and also securing the position are achieved in that a closure cap (63) is inserted into the space between the two transverse webs at a distance (B) and with an extension or directly with the bearing beam of the roller table component provided on this side ( 4 ′) is screwed.
the cover cap has an outer flange (64) which overlaps the associated transverse webs (48) or (47) which are at a distance (B) from one another.
Each of the gear boxes (50) can be provided with cooling fins (65) in its upper and lower region. It is of course possible to let heating or cooling elements project downwards and upwards from these gear boxes (50) or from the end cover (63), which are similar to the embodiment of FIG 1 to 3, the cooling element (22) is used to cool the gearbox (50) and the drive parts mounted in it.
the longitudinal spars (46) and / or the transverse spars (47, 48) as hollow profiles and to flow them with cooling air which, at one or more suitable points, is introduced into one or more of the hollow profiles via a blower becomes.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Tunnel Furnaces (AREA)
Heat Treatments In General, Especially Conveying And Cooling (AREA)

EP89105863A 1988-05-14 1989-04-04 Four de traitement thermique à sole à rouleaux, en particulier pour des petits articles céramiques et métalliques Expired - Lifetime EP0342343B1 (fr)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
AT89105863T ATE93310T1 (de)	1988-05-14	1989-04-04	Rollenherdofen zur waermebehandlung, insbesondere von kleinteilen aus metall und keramik.
SU894614111A SU1760998A3 (ru)	1988-05-14	1989-05-12	Печь с роликовым подом
JP01117644A JP3090271B2 (ja)	1988-05-14	1989-05-12	金属およびセラミックから成る小部品を熱処理するためのローラ平炉

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3816503A DE3816503C1 (fr)	1988-05-14	1988-05-14
DE3816503		1988-05-14

Publications (3)

Publication Number	Publication Date
EP0342343A2 true EP0342343A2 (fr)	1989-11-23
EP0342343A3 EP0342343A3 (en)	1990-03-28
EP0342343B1 EP0342343B1 (fr)	1993-08-18

Family

ID=6354382

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP89105863A Expired - Lifetime EP0342343B1 (fr)	1988-05-14	1989-04-04	Four de traitement thermique à sole à rouleaux, en particulier pour des petits articles céramiques et métalliques

Country Status (5)

Country	Link
US (1)	US5007826A (fr)
EP (1)	EP0342343B1 (fr)
DD (1)	DD283865A5 (fr)
DE (2)	DE3816503C1 (fr)
ES (1)	ES2046359T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2718001A1 (fr) *	1994-03-31	1995-10-06	Riedhammer Gmbh Co Kg	Dispositif de chargement et de déchargement en produit à cuire d'une structure de table de cuisson.
EP1715268A3 (fr) *	2005-04-20	2008-02-20	Rollmod Hochtemperatur - Transportsysteme GmbH	Dispositif d'entraînement pour des rouleaux d'un four à rouleaux et four à rouleaux
DE102007050934A1 (de) *	2007-10-23	2009-05-07	Lenzen Att Gmbh	Prozessanlage
DE102007050932A1 (de) *	2007-10-23	2009-05-07	Lenzen Att Gmbh	Prozessanlage

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3937104B4 (de) *	1989-11-07	2004-02-19	EISENMANN Maschinenbau KG (Komplementär: Eisenmann-Stiftung)	Verfahren zum Trocknen von Feuchtigkeit aufweisenden Keramikteilen und Sintern derselben
DE19723692C2 (de) *	1996-06-05	2000-11-23	Eisenmann Kg Maschbau	Verfahren zum Brennen von Ziegeln in einem Rollen-Brennofen sowie Brennofen zur Verfahrensdurchführung
US5848890A (en) *	1996-12-13	1998-12-15	Mccormick; Edward V.	Furnace product transport system
US5927477A (en) *	1997-10-02	1999-07-27	Engineering Design Services, Inc.	Conveyor roller with axial direct drive
IT1399527B1 (it) *	2010-03-29	2013-04-19	Nordmeccanica Spa	Impianto per l'essiccatura di un film continuo rivestito
US8865058B2 (en)	2010-04-14	2014-10-21	Consolidated Nuclear Security, LLC	Heat treatment furnace
DE102010017530A1 (de) *	2010-06-23	2011-12-29	Roth & Rau Ag	Lagerung von Transportrollen
EP3048404B1 (fr)	2015-01-20	2018-04-11	LOI Thermprocess GmbH	Dispositif de changement de rouleau porteur et procédé de changement de rouleau porteur
AT14599U1 (de) *	2015-01-20	2016-02-15	Loi Thermprocess Gmbh	Tragrollenwechselvorrichtung und Verfahren zum Tragrollenwechsel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE808589C (de) *	1949-02-27	1951-07-16	Ofag Ofenbau A G	Waerm-, Glueh- und Normalisierofen mit Rollenfoerderung
US3181676A (en) *	1962-10-29	1965-05-04	Res Mfg Inc	Collapsible conveyor
US3328861A (en) *	1965-06-24	1967-07-04	Pullman Inc	Roller hearth tunnel kilns
GB1194035A (en) *	1967-08-22	1970-06-10	Gibbons Brothers Ltd	Improvements relating to Furnaces
US3914099A (en) *	1974-08-29	1975-10-21	Spartek Inc	Refractory protection shield for continuous flow furnaces
FR2405449A1 (fr) *	1977-10-07	1979-05-04	Welko Ind Spa	Support pour rouleaux tournants formant le plan d'avancement de materiaux ceramiques dans les fours de cuisson
DE3510177A1 (de) *	1985-03-21	1986-10-16	Dieter Kehl	Rollenherdofen fuer die keramische industrie

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3608876A (en) *	1970-04-10	1971-09-28	Alco Standard Corp	Heat-treating apparatus with roller-type hearth
DE3510801C1 (de) *	1985-03-25	1986-02-06	Ludwig Riedhammer GmbH, 8500 Nürnberg	Tunnelförmiger Industrieofen

1988
- 1988-05-14 DE DE3816503A patent/DE3816503C1/de not_active Expired
1989
- 1989-04-04 EP EP89105863A patent/EP0342343B1/fr not_active Expired - Lifetime
- 1989-04-04 ES ES198989105863T patent/ES2046359T3/es not_active Expired - Lifetime
- 1989-04-04 DE DE8989105863T patent/DE58905302D1/de not_active Expired - Fee Related
- 1989-05-12 DD DD89328570A patent/DD283865A5/de not_active IP Right Cessation
- 1989-05-15 US US07/351,794 patent/US5007826A/en not_active Expired - Lifetime

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE808589C (de) *	1949-02-27	1951-07-16	Ofag Ofenbau A G	Waerm-, Glueh- und Normalisierofen mit Rollenfoerderung
US3181676A (en) *	1962-10-29	1965-05-04	Res Mfg Inc	Collapsible conveyor
US3328861A (en) *	1965-06-24	1967-07-04	Pullman Inc	Roller hearth tunnel kilns
GB1194035A (en) *	1967-08-22	1970-06-10	Gibbons Brothers Ltd	Improvements relating to Furnaces
US3914099A (en) *	1974-08-29	1975-10-21	Spartek Inc	Refractory protection shield for continuous flow furnaces
FR2405449A1 (fr) *	1977-10-07	1979-05-04	Welko Ind Spa	Support pour rouleaux tournants formant le plan d'avancement de materiaux ceramiques dans les fours de cuisson
DE3510177A1 (de) *	1985-03-21	1986-10-16	Dieter Kehl	Rollenherdofen fuer die keramische industrie

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2718001A1 (fr) *	1994-03-31	1995-10-06	Riedhammer Gmbh Co Kg	Dispositif de chargement et de déchargement en produit à cuire d'une structure de table de cuisson.
ES2125749A1 (es) *	1994-03-31	1999-03-01	Riedhammer Gmbh Co Kg	Disposicion de cargar y descargar una estructura de una plataforma de cochura con material de cochura.
EP1715268A3 (fr) *	2005-04-20	2008-02-20	Rollmod Hochtemperatur - Transportsysteme GmbH	Dispositif d'entraînement pour des rouleaux d'un four à rouleaux et four à rouleaux
US7413436B2 (en)	2005-04-20	2008-08-19	Rollmod Hochtemperatur-Transportsysteme Gmbh	Driving apparatus for rollers of roller hearth furnaces and roller hearth furnace
DE102007050934A1 (de) *	2007-10-23	2009-05-07	Lenzen Att Gmbh	Prozessanlage
DE102007050932A1 (de) *	2007-10-23	2009-05-07	Lenzen Att Gmbh	Prozessanlage

Also Published As

Publication number	Publication date
DE58905302D1 (de)	1993-09-23
DD283865A5 (de)	1990-10-24
EP0342343A3 (en)	1990-03-28
DE3816503C1 (fr)	1989-02-16
ES2046359T3 (es)	1994-02-01
US5007826A (en)	1991-04-16
EP0342343B1 (fr)	1993-08-18

Legal Events

Date	Code	Title	Description
1989-10-07	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1989-11-23	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE
1990-02-08	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1990-03-28	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE
1990-10-31	17P	Request for examination filed	Effective date: 19900907
1992-07-01	17Q	First examination report despatched	Effective date: 19920513
1993-06-11	ITF	It: translation for a ep patent filed	Owner name: DE DOMINICIS & MAYER S.R.L.
1993-07-02	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1993-08-18	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB GR IT LI NL SE
1993-08-18	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19930818 Ref country code: NL Effective date: 19930818 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19930818
1993-08-18	REF	Corresponds to:	Ref document number: 93310 Country of ref document: AT Date of ref document: 19930915 Kind code of ref document: T
1993-09-23	REF	Corresponds to:	Ref document number: 58905302 Country of ref document: DE Date of ref document: 19930923
1993-10-20	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19930916
1993-12-17	ET	Fr: translation filed
1994-01-17	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1994-02-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2046359 Country of ref document: ES Kind code of ref document: T3
1994-06-18	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1994-06-18	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1994-08-10	26N	No opposition filed
1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 89105863.8
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2002-03-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20020315 Year of fee payment: 14
2002-04-19	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: AT Payment date: 20020419 Year of fee payment: 14
2002-04-22	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 20020422 Year of fee payment: 14 Ref country code: CH Payment date: 20020422 Year of fee payment: 14
2002-04-24	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 20020424 Year of fee payment: 14
2003-04-04	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030404 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030404
2003-04-05	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030405 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030405
2003-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030430 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030430
2003-11-26	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20030404
2003-12-02	EUG	Se: european patent has lapsed
2003-12-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2004-08-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20030405
2007-05-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20070509 Year of fee payment: 19
2008-01-02	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: IT Payment date: 20070607 Year of fee payment: 19
2008-04-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20070418 Year of fee payment: 19
2009-01-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081101
2009-01-30	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST Effective date: 20081231
2009-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080430
2009-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080404

Publication	Publication Date	Title
DE2605303C3 (de)	1986-02-13	Durchlaufofen zum Erwärmen von Glasscheiben
DE2245960C3 (de)	1981-05-21	Durchlauftrockner für Bahnmaterialien
EP0342343B1 (fr)	1993-08-18	Four de traitement thermique à sole à rouleaux, en particulier pour des petits articles céramiques et métalliques
DE4336364C2 (de)	1996-02-29	Vorrichtung zum Erhitzen oder zum Kühlen von tafelförmigem oder bandförmigem Behandlungsgut aus Glas oder keramischem Werkstoff
DE2254848A1 (de)	1974-05-16	Verfahren zum thermischen nachverbrennen von abluft aus industriellen arbeitsanlagen und vorrichtung zur durchfuehrung dieses verfahrens
DD232539B5 (de)	1995-04-20	Rostbodenelement zum Aufbau einer Rostflaeche
EP0236905B1 (fr)	1991-04-03	Dispositif pour appliquer une pression superficielle sur des pièces à travailler en mouvement de translation
DE1508508C2 (de)	1980-01-24	Kontinuierlich arbeitender Rollenherdofen
EP1320499B1 (fr)	2005-03-16	Dispositif d'inversion pour element de transport sur une voie de transport
DE19649073A1 (de)	1998-06-04	Vorrichtung zur Abkühlung von Strangpreßprofilen
EP0058324B1 (fr)	1984-09-26	Dispositif pour le refroidissement réglé d'un fil à température de laminage
DE4008979C1 (fr)	1991-08-01
DE2840282C2 (de)	1986-04-30	Lager für Rollen eines Rollenherd-Ofens
DE3319396C2 (de)	1985-04-04	Ofenanlage mit einem Ofen und einer Fördereinrichtung
EP0093877B1 (fr)	1986-02-12	Dispositif pour le traitement thermique de pièces de matière à haute température
EP0131955A1 (fr)	1985-01-23	Procédé et installation pour le traitement thermique d'objets cylindriques, en particulier de tubes, notamment fait de matériaux céramiques
DE3515856C1 (de)	1986-07-24	Tunnelförmiger Industrieofen
DE3943051A1 (de)	1991-07-04	Angetriebener rollenbahnfoerderer
EP0008423B1 (fr)	1982-12-22	Dispositif pour le traitement thermique d'une tôle allongée
DE3246196C2 (de)	1986-03-06	Ofen zum Glühen zylindrischer metallischer Körper
EP3583264A1 (fr)	2019-12-25	Hotte de séchage, ensemble de séchage et utilisation de celui-ci
EP0062795A1 (fr)	1982-10-20	Installation pour le transport de feuilles de verre à l'état chaud et/ou de feuilles de verre à chauffer
DE4420464A1 (de)	1995-12-14	Ofen zum Erwärmen von Werkstücken
DE10211216B4 (de)	2006-06-22	Anlage zum beidseitigen Behandeln von Blechzuschnitten
DE29603131U1 (de)	1996-04-04	Bügelvorrichtung mit Lineargestell