EP0464955A1 - Dispositif de chauffage d'air et assemblage de chauffage - Google Patents

Dispositif de chauffage d'air et assemblage de chauffage Download PDF

Info

Publication number
EP0464955A1
EP0464955A1 EP91201730A EP91201730A EP0464955A1 EP 0464955 A1 EP0464955 A1 EP 0464955A1 EP 91201730 A EP91201730 A EP 91201730A EP 91201730 A EP91201730 A EP 91201730A EP 0464955 A1 EP0464955 A1 EP 0464955A1
Authority
EP
European Patent Office
Prior art keywords
heating device
air heating
frame
heat sinks
ptc
Prior art date
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
EP91201730A
Other languages
German (de)
English (en)
Other versions
EP0464955B1 (fr
Inventor
Frederik Mannes Nicolaas Van Den Elst
Erik Johannes Maria Golbach
Arie Van Der Ploeg
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.)
Texas Instruments Holland BV
Texas Instruments Inc
Original Assignee
Texas Instruments Holland BV
Texas Instruments Inc
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.)
Filing date
Publication date
Application filed by Texas Instruments Holland BV, Texas Instruments Inc filed Critical Texas Instruments Holland BV
Priority to AT91201730T priority Critical patent/ATE98362T1/de
Publication of EP0464955A1 publication Critical patent/EP0464955A1/fr
Application granted granted Critical
Publication of EP0464955B1 publication Critical patent/EP0464955B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0464—Two-piece frames, e.g. two-shell frames, also including frames as a central body with two covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0452—Frame constructions
    • F24H3/0476—Means for putting the electric heaters in the frame under strain, e.g. with springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic

Definitions

  • the invention relates to an air heating device according to the preamble of claim 1.
  • Such a device can be used in cars for heating of ventilation air which has to be supplied to the front screen during the time that the engine is not sufficiently heated to take over air heating through the normal heater radiator. It is an advantage that cold air can be electrically heated without sophisticated control mechanisms whilst the temperature cannot exceed a certain value determined by the properties of the PTC-material.
  • the heat sinks comprise separate metal strips and the fins are connected to the heat sinks by brazing.
  • the PTC-tablets are positioned flat against the heat sinks without being adhered thereto. Because of that corrosion can result at the contact surfaces between pills and heat sinks giving a deterioriated electric contact.
  • Two of the four frame ledges comprise two strips, being displacable relative to each other, in between which a undulated resilient belt is placed, pressing the inner strip to an adjacent metal heat sink strip and in this way the assembly comprising separate heat sinks, fins and non adhered PTC-tablets are clamped within the frame. Furthermore the pills are maintained in their position by an extra plastic holder.
  • the invention aims to obviate these drawbacks. According to the invention this is realized with a air heating device as described above with the characterizing features of claim 1. Through the use of adhesive corrosion on the electrical contact face between heat sinks and pills is prevented.
  • the heat sinks are provided with protrusions realized extruding for positioning of the PTC-tablets and the PTC-tablets project all over their circumference beyond the circumference edges of the protrusions. Surplus adhesive will flow in the space between the projecting edges of the PTC-tablets and the related heat sink.
  • Short circuit by other causes can be prevented by covering the box profiles with a heat-proof electric isolating coating.
  • one of the heat sinks of each box section is provided with a dilatation gap during extruding, and each PTC-pill is connected at one face by stiff quality adhesive and at the other face by a yielding quality adhesive.
  • the device can be easily assembled if the frame comprises two parts clamped to each other, wherein the clamping face extends over the circumference of the frame and when the assembly of box sections and PTC-tablet is enclosed within the frame by a compression spring.
  • the frame gives both thermal and electrical insulation.
  • the air heating device according to the invention is particular well suited to be connected to the casing of a standard cooling water radiator of a car.
  • a liquid heating device comprising two box section-like reservoirs having ribs and a disk placed between said reservoirs.
  • the material of the disk conducts at low temperature more current than at higher temperature. Only two box sections are provided not being
  • EP-A-0 243 077 (Ford Motor Company) a electrical air heating device is disclosed being positioned in the ventilation channel of a car and comprising a casing from an insulating material wherein two sets of heat conducting channels are provided, wherein between the channels of each set n undulated rib strip is positioned and between the channels facing each other of the two sets PTC-tablets are positioned. Also in this structure rib strips are brazed to the heat conducting channels, such that no extruded sections, each having two heat sinks and fins extending between these heat sinks and also being extruded, are provided.
  • heat transfer to air can be increased by positioning the fins nearer to each other and/or to increase the air flow path within the heating device.
  • the invention also relates to a heating assembly comprising at least two heating devices as described above as well as a frame work enclosing said heating devices.
  • a heating assembly can be realized according to the subject need.
  • each heating device being positioned during use adjacent to another heating device is provid- ded with resilient pressure means such as resilient tabs.
  • the usual radiator of a car comprises a casing 1 having a cooling water supply 2 and a cooling water discharge 3, a cooling water tube 4 extending between this supply and discharge, and an air intake opening 5.
  • Heat exchange strips 7 are connected to tube 4 and extend in the flow direction of air, indicated by an arrow.
  • Insulation material 8 is provided to the inner surface of casing 1.
  • a header 13 is connected to casing 1 through a flange connection 14. From this header air hoses 15 extend to the interior of the car.
  • box sections 16 are provided inside frame 11 . These are realized from aluminum or an aluminum alloy by extrusion and comprise two heat sinks 17, 18 and fins 19 extending between these heat sinks and shorter fins 20. On the heat sinks protrusions 21 are realized during extruding.
  • One side of the box section is provided over a part of its height with a thickened wall 22 in which a hole 23 is recessed. In this hole a stainless steel sleeve 24 is pressed functioning as fuse holder and providing a reliable contact aluminum-stainless steel.
  • a heat and current conducting adhesive e.g. epoxy glue filled by silver particles.
  • One of the heat sinks 18 of each box section is provided with a dilatation gap 26 realized during extruding.
  • the box sections 16 are spaced from each other by the PTC-tablets.
  • Each PTC-tablet is adhered with its two faces to a projection 21.
  • the tablet is adhered to the one projection by means of a plastic adhesive and to the other projection by means of a hard adhesive. Because of that the tablet will not get loose during temperature expansions and contractions.
  • the dilatation gap 26 in each box section allows these movements.
  • a resilient clip 29 encloses the assembly of box sections and PTC-tablets in the frame 11 and compensates for thermical expansion between the stack of heat sinks and the frame.
  • a voltage rail 31a, 31 b is provided in frame portion 11 a in frame portion 11 a. Alternating with each box section 16 the voltage rail 31 b is connected with the bottom of the related sleeve 24 introduced by pressing and so with the related box section 16, through a contact spring 32 and a fuse 34. The voltage rail 31 is connected to the other box sections 16 through the contact spring 32 and sleeve 24.
  • the voltage rail 31 a is electrically positive and the voltage rail 31 b is electrically negative, an electric current will flow through rail 31 a, fuses 34, fuse holders 24 to the related box sections and from there through the PTC-tablets 25, the other box sections, the fuse holders 24 (without fuse) to rail 31 b.
  • the PTC-tablets are heated to a temperature depending from their material and release their heat to the box sections, through which air flows being rapidly brought to the desired temperature. As soon as the engine is heated, air will be sufficiently heated in the usual radiator, such that the electric heating member can be switched off by a thermostatt. Under very cold circumstances and with very efficient engines, emitting less heat, it is possible that the electric heating device is in continuous use during driving.
  • the box sections 16 are covered with a heat-resistent current insulating coating and the PTC-tablets 25 extend near their circumference beyond the projections 21, such that superfluous conducting adhesive can flow in the space 35 between projecting peripheral edges of the tablets and the related heat sink and cannot contact the adjacent heat sink by flowing.
  • a heating assembly is generally indicated by reference number 40.
  • This heating assembly is constructed from heating devices indicated by 41 one of which is shown in fig. 5.
  • Each heating device or module comprises several box sections 42 between which PTC-elements 43 are provided. Box sections 42 and PTC-elements 43 are enclosed by frame 44 comprising a base plate 45, side walls 46, 47 and a rear wall 48. Side wall 47 is provided with protruding resilient tabs 58. In side wall 46 dents 56 are provided which in combination with tabs 48 ensure that box sections 42 and PTC's 43 will always be resiliently enclosed by frame 44.
  • Tab 48 being inside frame 44 functions to press the box sections 42 and PTC-elements 43 against each other and is comparable with clip 29 of fig. 2.
  • Tab 48 extending outwardly from wall 47 functions (as is shown in fig. 6) to pressure several heating devices 41 against each other within frame work 49.
  • Frame work 49 is provided at its rear wall 50 with cams 60 protruding through every second opening in rear wall 58 of each heating device. Near its front wall 51 cams 52 project to the related opening in base plate 45.
  • the invention cannot only be used for cars but also for electric heaters and similar devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
EP91201730A 1990-07-03 1991-07-03 Dispositif de chauffage d'air et assemblage de chauffage Expired - Lifetime EP0464955B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91201730T ATE98362T1 (de) 1990-07-03 1991-07-03 Luftheizungsgeraet und heizungszusammenbau.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9001518 1990-07-03
NL9001518A NL9001518A (nl) 1990-07-03 1990-07-03 Luchtverwarmingsinrichting.

Publications (2)

Publication Number Publication Date
EP0464955A1 true EP0464955A1 (fr) 1992-01-08
EP0464955B1 EP0464955B1 (fr) 1993-12-08

Family

ID=19857356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91201730A Expired - Lifetime EP0464955B1 (fr) 1990-07-03 1991-07-03 Dispositif de chauffage d'air et assemblage de chauffage

Country Status (4)

Country Link
EP (1) EP0464955B1 (fr)
AT (1) ATE98362T1 (fr)
DE (1) DE69100740T2 (fr)
NL (1) NL9001518A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2701757A1 (fr) * 1993-02-18 1994-08-26 Valeo Thermique Habitacle Radiateur de chauffage électrique, notamment pour l'habitacle d'un véhicule automobile.
EP0616486A1 (fr) * 1993-03-17 1994-09-21 Texas Instruments Incorporated Appareil de chauffage et procédé pour chauffer un courant de fluide
EP1370117A2 (fr) * 2002-06-05 2003-12-10 CEBI S.p.A. Radiateur électrique avec éléments PTC, en particulier pour systèmes de ventilation de cabine d' automobile
EP1530405A2 (fr) 1997-09-02 2005-05-11 Behr GmbH & Co. KG Dispositif de chauffage électrique, particulièrement pour véhicules automobiles.
US6905201B2 (en) * 2002-12-16 2005-06-14 Xerox Corporation Solid phase change ink melter assembly and phase change ink image producing machine having same
WO2007071335A1 (fr) * 2005-12-20 2007-06-28 Beru Aktiengesellschaft Systeme de chauffage electrique, notamment pour automobiles
EP2282605A1 (fr) * 2009-08-01 2011-02-09 BorgWarner BERU Systems GmbH Dispositif de chauffage
DE102010048593A1 (de) 2010-10-18 2012-04-19 Eichenauer Heizelemente Gmbh & Co. Kg Modulare Heizvorrichtung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105285B4 (de) * 2013-05-23 2022-05-05 Borgwarner Ludwigsburg Gmbh Aus Heizmodulen zusammengesetzte Heizvorrichtung und Heizmodul hierfür

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852567A (en) * 1973-01-09 1974-12-03 J Cordes Electric heater unit
FR2404985A1 (fr) * 1977-09-29 1979-04-27 Siemens Ag Dispositif de chauffage pour un chauffe-eau instantane
EP0350528A1 (fr) * 1988-07-15 1990-01-17 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Radiateur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852567A (en) * 1973-01-09 1974-12-03 J Cordes Electric heater unit
FR2404985A1 (fr) * 1977-09-29 1979-04-27 Siemens Ag Dispositif de chauffage pour un chauffe-eau instantane
EP0350528A1 (fr) * 1988-07-15 1990-01-17 David & Baader DBK Spezialfabrik elektrischer Apparate und Heizwiderstände GmbH Radiateur

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2701757A1 (fr) * 1993-02-18 1994-08-26 Valeo Thermique Habitacle Radiateur de chauffage électrique, notamment pour l'habitacle d'un véhicule automobile.
EP0616486A1 (fr) * 1993-03-17 1994-09-21 Texas Instruments Incorporated Appareil de chauffage et procédé pour chauffer un courant de fluide
US5471034A (en) * 1993-03-17 1995-11-28 Texas Instruments Incorporated Heater apparatus and process for heating a fluid stream with PTC heating elements electrically connected in series
DE19738318C5 (de) * 1997-09-02 2014-10-30 Behr Gmbh & Co. Kg Elektrische Heizeinrichtung für ein Kraftfahrzeug
EP1530405A2 (fr) 1997-09-02 2005-05-11 Behr GmbH & Co. KG Dispositif de chauffage électrique, particulièrement pour véhicules automobiles.
EP1530405B1 (fr) * 1997-09-02 2018-02-28 MAHLE Behr GmbH & Co. KG Dispositif de chauffage électrique, particulièrement pour véhicules automobiles.
EP1370117A2 (fr) * 2002-06-05 2003-12-10 CEBI S.p.A. Radiateur électrique avec éléments PTC, en particulier pour systèmes de ventilation de cabine d' automobile
EP1370117A3 (fr) * 2002-06-05 2004-12-01 CEBI S.p.A. Radiateur électrique avec éléments PTC, en particulier pour systèmes de ventilation de cabine d' automobile
US6905201B2 (en) * 2002-12-16 2005-06-14 Xerox Corporation Solid phase change ink melter assembly and phase change ink image producing machine having same
US8975561B2 (en) 2005-12-20 2015-03-10 Borgwarner Beru Systems Gmbh Electric heating apparatus, especially for motor vehicles
WO2007071335A1 (fr) * 2005-12-20 2007-06-28 Beru Aktiengesellschaft Systeme de chauffage electrique, notamment pour automobiles
EP2282605A1 (fr) * 2009-08-01 2011-02-09 BorgWarner BERU Systems GmbH Dispositif de chauffage
DE102010048593A1 (de) 2010-10-18 2012-04-19 Eichenauer Heizelemente Gmbh & Co. Kg Modulare Heizvorrichtung
DE102010048593B4 (de) * 2010-10-18 2015-03-19 Eichenauer Heizelemente Gmbh & Co. Kg Modulare Heizvorrichtung

Also Published As

Publication number Publication date
DE69100740T2 (de) 1994-03-24
NL9001518A (nl) 1992-02-03
DE69100740D1 (de) 1994-01-20
ATE98362T1 (de) 1993-12-15
EP0464955B1 (fr) 1993-12-08

Similar Documents

Publication Publication Date Title
US5239163A (en) Automobile air heater utilizing PTC tablets adhesively fixed to tubular heat sinks
JP4703557B2 (ja) 電気加熱装置、主として自動車用の電気加熱装置
US6178292B1 (en) Core unit of heat exchanger having electric heater
US7200327B2 (en) Electric heating device, in particular for a vehicle heating and/or air-conditioning apparatus
EP0857922B1 (fr) Noyau d'un échangeur de chaleur avec réchauffeur électrique
US5256857A (en) Finned PTC air heater assembly for heating an automotive passenger compartment
US4954692A (en) Positive temperature coefficient thermistor device for a heating apparatus
EP0464955B1 (fr) Dispositif de chauffage d'air et assemblage de chauffage
US20030132222A1 (en) Electric heating device
US20070045274A1 (en) Heat rod assembly and pre-heater for vehicles including the same
US11676745B2 (en) PTC heating element and an electric heating device
US7098429B2 (en) Heat exchanger, particularly for a heating or air conditioning unit in a motor vehicle
US20110240631A1 (en) Electrical heating unit, particularly for cars
US20220297506A1 (en) Electric Heating Device
US7361868B2 (en) Electrical heating device, especially for motor vehicles
KR20050018831A (ko) Ртс 소자를 이용한 자동차용 히터
ITTO20000034U1 (it) Radiatore elettrico.
EP0609933A2 (fr) Ventilateur pour véhicule avec circuit de résistance pour le contrôle de vitesse
US7977605B2 (en) Heating assembly comprising a PTC element, in particular for a motor vehicle
KR101030869B1 (ko) Ｐｗｍ 제어 고용량 피티씨 히터
US20110052161A1 (en) Heating Device
KR100462719B1 (ko) 자동차용 히터코어의 보조발열장치
JP2007511412A (ja) 特に自動車の暖房装置または空調装置用の熱交換器、およびこの熱交換器を製造するための方法
KR100864842B1 (ko) 난방용 열교환기
CN113228823A (zh) 具有熔断功能的发热元件及包括此的加热单元

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES FR GB IT NL SE

17P Request for examination filed

Effective date: 19920428

17Q First examination report despatched

Effective date: 19930504

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB IT NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19931208

Ref country code: BE

Effective date: 19931208

Ref country code: AT

Effective date: 19931208

Ref country code: NL

Effective date: 19931208

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19931208

REF Corresponds to:

Ref document number: 98362

Country of ref document: AT

Date of ref document: 19931215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69100740

Country of ref document: DE

Date of ref document: 19940120

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 91201730.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970610

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970624

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19970709

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970905

Year of fee payment: 7

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: 19980703

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: 19980704

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980703

EUG Se: european patent has lapsed

Ref document number: 91201730.8

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: 19990331

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: 19990501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST