EP0143731A1 - Closed reservoir, especially a water heater with internal protection, and process for realising this protection - Google Patents

Closed reservoir, especially a water heater with internal protection, and process for realising this protection Download PDF

Info

Publication number
EP0143731A1
EP0143731A1 EP84440037A EP84440037A EP0143731A1 EP 0143731 A1 EP0143731 A1 EP 0143731A1 EP 84440037 A EP84440037 A EP 84440037A EP 84440037 A EP84440037 A EP 84440037A EP 0143731 A1 EP0143731 A1 EP 0143731A1
Authority
EP
European Patent Office
Prior art keywords
shells
internal
protection
water heater
reservoir
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.)
Withdrawn
Application number
EP84440037A
Other languages
German (de)
French (fr)
Inventor
Jean Wendling
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.)
Schneider Industrie Si SA
Original Assignee
Schneider Industrie Si SA
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 Schneider Industrie Si SA filed Critical Schneider Industrie Si SA
Publication of EP0143731A1 publication Critical patent/EP0143731A1/en
Withdrawn legal-status Critical Current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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank
    • F24H1/183—Inner linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings

Definitions

  • the invention relates, on the one hand, to a closed tank, in particular to a water heater with internal protection against a liquid or gaseous fluid, and, on the other hand, to a method allowing this internal protection of the tank to be produced.
  • the present invention aims to remedy these drawbacks.
  • the invention as characterized in the claims, solves the problem of creating a closed reservoir, in particular of a heater with a process by which two metallic enantiomorphic half-shells are taken, the internal surface of these two half-shells is prepared to make it suitable for receiving metallization , an adequate thickness of aluminum or zinc is applied by metallization to this prepared surface, then the two half-shells are assembled by welding to obtain the reservoir and, finally, the latter is subjected to a heat treatment to temperature given to improve the anti-corrosion effect of the internal coating, this tank comprising a metal support, preferably of steel, the internal surface of which is provided with a protective coating of aluminum or zinc applied by metallization and then subjected to a heat treatment.
  • the advantages obtained thanks to this invention essentially consist in that the coating of the internal surface of the tank is applied before its assembly, which allows to have an easy access to all this internal surface and to be able to control the uniformity of the coating and check that the entire internal surface is covered with the protective coating. Therefore, the tanks have an internal surface provided with effective, real and long-lasting protection.
  • Figure 1 shows, in elevational view in section, two half-shells of a tank according to the invention before its assembly.
  • the reservoir comprises a metal support preferably made of steel and formed of two half-shells 1, 2 whose shape and section are arbitrary.
  • the reservoir may be formed of a container which can be closed by a cover.
  • the tank consists of a cylinder closed at each end by a bottom.
  • the invention recommends using two half-shells 1, 2 each of which is formed by a ferrule 3, 4 and a base 5, 6. These two half-shells 1, 2 will be assembled after application of the protective coating, by welding the edges 7, 8 of the two ferrules 3, 4 together.
  • an anti-corrosion protective coating 11, 12 is produced on the internal surface 9, 10 of each half-shell 1, 2.
  • the invention provides a process which can be carried out because the two half-shells 1, 2 are independent before the coating 11, 12 and that the latter can be applied from the open end 13, 14 of the ferrules 3, 4.
  • the internal surface 9, 10 is prepared to make the latter suitable for receiving metallization.
  • a metal layer is applied by metallization having an adequate thickness of aluminum, zinc or other similar products.
  • the two half-shells 1, 2 are welded by applying their edges 7, 8 against each other.
  • the tank obtained is subjected to a heat treatment at a given temperature. During this heat treatment, the different aluminum, zinc or other molecules are welded to each other. As a result, a homogeneous layer is obtained and the anti-corrosion effect of this internal coating is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

A closed reservoir, especially of a water heater with internal protection against a liquid or gaseous fluid, comprising a metal support preferably made of steel, the internal surface (9, 10) of which is provided with a protective covering made of aluminium or zinc (11, 12) applied by metallisation and then subjected to heat treatment. This reservoir is made by a process according to which two enantiomorphic metal half-shells are used, the internal surface of these two half-shells is prepared to make it suitable to receive metallisation, an adequate thickness of aluminium or zinc is applied by metallisation to this prepared surface, and then the assembly by welding of these two half-shells is carried out in order to obtain the reservoir, and finally the latter is subjected to heat treatment at a given temperature in order to improve the anti-corrosive effect of the internal covering. <IMAGE>

Description

L'invention concerne, d'une part, un réservoir fermé notamment d'un chauffe-eau à protection interne envers un fluide liquide ou gazeux et, d'autre part, un procédé permettant la réalisation de cette protection interne du réservoir.The invention relates, on the one hand, to a closed tank, in particular to a water heater with internal protection against a liquid or gaseous fluid, and, on the other hand, to a method allowing this internal protection of the tank to be produced.

Il est connu de pourvoir la face interne de certains réservoirs tels que les réservoirs des chauffe-eau.d'une protection interne envers les eaux agressives qui sont pour autant quand même potables constituée essentiellement par émaillage, galvanisation, plastification ou protection par ciment. A cet effet, les réservoirs des chauffe-eau doivent présenter à leur partie inférieure une ouverture relativement importante nécessaire aux traitements indiqués ci-dessus.It is known to provide the internal face of certain tanks such as the tanks of water heaters with internal protection against aggressive waters which are nevertheless still drinkable, constituted essentially by enameling, galvanizing, plasticization or protection by cement. For this purpose, the tanks of water heaters must have at their lower part a relatively large opening necessary for the treatments indicated above.

Cependant, eu égard de la législation régissant les garanties obligatoires, cette protection interne doit être efficace dans le temps et réelle au point de vue protection. Or, il s'avère qu'il suffit qu'une très faible surface, de l'ordre d'un millimètre carré, ne soit pas correctement émaillée pour que, après une certaine durée, l'appareil en question présente une fuite. Il est certain que ceci présente de graves inconvénients pour les fabricants de tels appareils, notamment du fait que l'usager peut, selon la législation en vigueur, faire appel à la garantie. En effet, même si le réservoir présente, à sa partie inférieure, une ouverture relativement importante, il n'est absolument pas certain que la couche de protection soit uniformément appliquée sur toute la surface interne du réservoir. De plus, il est nécessaire de prévoir des moyens pour assurer l'étanchéité de cette couverture.However, in view of the legislation governing compulsory guarantees, this internal protection must be effective over time and real in terms of protection. However, it turns out that it is sufficient that a very small surface area, of the order of a square millimeter, is not properly enamelled so that, after a certain period, the device in question has a leak. It is certain that this presents serious disadvantages for the manufacturers of such devices, in particular the fact that the user can, according to the legislation in force, call on the warranty. Indeed, even if the reservoir has, at its lower part, a relatively large opening, it is absolutely not certain that the protective layer is uniformly applied over the entire internal surface of the reservoir. In addition, it is necessary to provide means for sealing this cover.

De ce fait, le coût d'un tel réservoir est relativement élevé alors qu'il n'est absolument pas certain que la protection soit réelle et efficace.Therefore, the cost of such a tank is relatively high while it is absolutely not certain that the protection is real and effective.

La présente invention a pour but de remédier à ces inconvénients. L'invention, telle qu'elle est caractérisée dans les revendications, résout le problème consistant à créer un réservoir fermé, notamment d'un chàuffe-eàu par un procédé selon lequel on prend deux demi-coquilles énantiômôrphes métalliques, on prépare la surface interne de ces deux demi-coquilles pour la rendre apte à recevoir une métallisation, on applique par métallisation sur cette surface préparée une épaisseur adéquate d'aluminium ou de zinc, on procède ensuite à l'assemblage par soudure des deux demi-coquilles pour obtenir le réservoir et, finalement, ce dernier est soumis à un traitement thermique à température donnée pour améliorer l'effet anti-corrosif du revêtement interne, ce réservoir comportant un support métallique, de préférence en acier, dont la surface interne est pourvue d'un revêtement de protection en aluminium ou en zinc appliqué par métallisation puis soumis à un traitement thermique.The present invention aims to remedy these drawbacks. The invention, as characterized in the claims, solves the problem of creating a closed reservoir, in particular of a heater with a process by which two metallic enantiomorphic half-shells are taken, the internal surface of these two half-shells is prepared to make it suitable for receiving metallization , an adequate thickness of aluminum or zinc is applied by metallization to this prepared surface, then the two half-shells are assembled by welding to obtain the reservoir and, finally, the latter is subjected to a heat treatment to temperature given to improve the anti-corrosion effect of the internal coating, this tank comprising a metal support, preferably of steel, the internal surface of which is provided with a protective coating of aluminum or zinc applied by metallization and then subjected to a heat treatment.

Les avantages obtenus grâce à cette invention consistent essentiellement en ceci que le revêtement de la surface interne du réservoir est appliqué avant son assemblage, ce qui permet d'avoir un accès facile à toute cette surface interne et de pouvoir contrôler l'uniformité du revêtement et vérifier si l'intégralité de la surface interne est recouverte du revêtement protecteur. De ce fait, les réservoirs comportent une surface interne pourvue d'une protection efficace, réelle et de grande durée.The advantages obtained thanks to this invention essentially consist in that the coating of the internal surface of the tank is applied before its assembly, which allows to have an easy access to all this internal surface and to be able to control the uniformity of the coating and check that the entire internal surface is covered with the protective coating. Therefore, the tanks have an internal surface provided with effective, real and long-lasting protection.

L'invention est exposée ci-après plus en détail à l'aide de dessins représentant seulement un mode d'exécution.The invention is set out below in more detail with the aid of drawings representing only one embodiment.

La figure 1 représente, en vue en élévation et en coupe, deux demi-coquilles d'un réservoir conforme à l'invention avant son assemblage.Figure 1 shows, in elevational view in section, two half-shells of a tank according to the invention before its assembly.

On se réfère à la figure unique.We refer to the single figure.

Selon l'invention, le réservoir comporte un support métallique de préférence en acier et formé de deux demi-coquilles 1, 2 dont la forme et la section sont quelconques. Cependant, il est souhaitable que ces deux demi-coquilles 1, 2 soient énantiomorphes pour permettre leur assemblage par soudure en vue d'obtenir le réservoir voulu. Sans sortir du cadre et de l'esprit de l'invention, le réservoir peut être formé d'un récipient pouvant être obturé par un couvercle.According to the invention, the reservoir comprises a metal support preferably made of steel and formed of two half-shells 1, 2 whose shape and section are arbitrary. However, it is desirable that these two half-shells 1, 2 are enantiomorphic to allow their assembly by welding in order to obtain the desired reservoir. Without departing from the scope and spirit of the invention, the reservoir may be formed of a container which can be closed by a cover.

Pour les chauffe-eau,.il est souhaitable que le réservoir soit constitué d'un cylindre obture à chaque extrémité pàr un fond. A cet effet, l'invention préconise d'utiliser deux demi-coquilles 1,2 dont chacune est formée d'une virole 3, 4 et d'un fond 5, 6. Ces deux demi-coquilles 1, 2 seront assemblées après application du revêtement de protection, en soudant ensemble les chants 7, 8 des deux viroles 3, 4.For water heaters, it is desirable that the tank consists of a cylinder closed at each end by a bottom. To this end, the invention recommends using two half-shells 1, 2 each of which is formed by a ferrule 3, 4 and a base 5, 6. These two half-shells 1, 2 will be assembled after application of the protective coating, by welding the edges 7, 8 of the two ferrules 3, 4 together.

Conformément à l'invention, on réalise sur la surface interne 9, 10 de chaque demi-coquille 1, 2 un revêtement de protection anti-corrosif 11, 12. A cet effet, l'invention propose un procédé pouvant être réalisé du fait que les deux demi-coquilles 1, 2 sont indépendantes avant le revêtement 11, 12 et que ce dernier peut être appliqué depuis l'extrémité ouverte 13, 14 des viroles 3, 4.According to the invention, an anti-corrosion protective coating 11, 12 is produced on the internal surface 9, 10 of each half-shell 1, 2. To this end, the invention provides a process which can be carried out because the two half-shells 1, 2 are independent before the coating 11, 12 and that the latter can be applied from the open end 13, 14 of the ferrules 3, 4.

A cet effet, on procède à la préparation de la surface interne 9, 10 pour rendre celle-ci apte à recevoir une métallisation. Sur cette surface préparée 9, 10, on applique par métallisation une couche métallique présentant une épaisseur adéquate d'aluminium, de zinc ou autres produits analogues. Après l'application de cette couche métallique, on soude les deux demi-coquilles 1, 2 en appliquant l'un contre l'autre leurs chants 7, 8. Puis, on soumet le réservoir obtenu à un traitement thermique à température donnée. Au cours de ce traitement thermique, les différentes molécules d'aluminium, de zinc ou autres se soudent les unes aux autres. De ce fait, on obtient une couche homogène et on améliore l'effet anti-corrosif de ce revêtement interne.To this end, the internal surface 9, 10 is prepared to make the latter suitable for receiving metallization. On this prepared surface 9, 10, a metal layer is applied by metallization having an adequate thickness of aluminum, zinc or other similar products. After the application of this metal layer, the two half-shells 1, 2 are welded by applying their edges 7, 8 against each other. Then, the tank obtained is subjected to a heat treatment at a given temperature. During this heat treatment, the different aluminum, zinc or other molecules are welded to each other. As a result, a homogeneous layer is obtained and the anti-corrosion effect of this internal coating is improved.

Claims (4)

1. Réservoir fermé,notamment d'un chauffe-eau à protection interne envers un fluide liquide ou gazeux, caractérisé en ce qu'il comporte un support métallique de préférence en acier dont la surface interne (9, 10) est pourvue d'un revêtement de protection en aluminium ou en zinc (11, 12) appliqué par métallisation puis soumis à un traitement thermique.1. Closed tank, in particular of a water heater with internal protection against a liquid or gaseous fluid, characterized in that it comprises a metal support preferably of steel whose internal surface (9, 10) is provided with a aluminum or zinc protective coating (11, 12) applied by metallization and then subjected to a heat treatment. 2. Réservoir selon la revendication 1, caractérisé en ce que le support métallique est formé de deux demi-coquilles (1, 2) comportant une extrémité ouverte (13, 14) permettant l'application du revêtement de protection (11, 12).2. Tank according to claim 1, characterized in that the metal support is formed of two half-shells (1, 2) having an open end (13, 14) allowing the application of the protective coating (11, 12). 3. Réservoir selon la revendication 2, caractérisé en ce que les deux demi-coquilles (1, 2) comportent un fond (5, 6) et une virole (3, 4) dont les chants (7, 8) sont assemblés par soudure après application du revêtement de protection (11, 12).3. Tank according to claim 2, characterized in that the two half-shells (1, 2) have a bottom (5, 6) and a ferrule (3, 4) whose edges (7, 8) are assembled by welding after application of the protective coating (11, 12). 4. Procédé pour la réalisation de la protection interne d'un réservoir fermé,notamment d'un chauffe-eau selon la revendication 1, caractérisé en ce que l'on prend deux demi-coquilles énantiomorphes métalliques (1, 2), que l'on prépare la surface interne (9, 10) de ces deuxtdemi-coquilles (1, 2) pour la rendre apte à recevoir une métallisation, que sur cette surface préparée (9, 10) l'on applique par métallisation une épaisseur (11, 12) adéquate d'aluminium ou de zinc, qu'ensuite l'on procède à l'assemblage par soudure des deux demi-coquilles (1, 2) pour obtenir le réservoir et que, finalement, ce dernier est soumis à un traitement thermique à température donnée pour améliorer l'effet anti-corrosif du revêtement interne (11, 12).4. Method for producing the internal protection of a closed tank, in particular of a water heater according to claim 1, characterized in that two metallic enantiomorphic half-shells (1, 2) are taken, that l 'the inner surface is prepared (9, 10) of these two t half-shells (1, 2) to make it suitable for receiving a metallization on the prepared surface (9, 10) is applied by metallization thickness (11, 12) adequate aluminum or zinc, which then proceeds to the assembly by welding of the two half-shells (1, 2) to obtain the tank and that, finally, the latter is subjected to a heat treatment at a given temperature to improve the anti-corrosion effect of the internal coating (11, 12).
EP84440037A 1983-09-01 1984-08-24 Closed reservoir, especially a water heater with internal protection, and process for realising this protection Withdrawn EP0143731A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8314138A FR2551424B1 (en) 1983-09-01 1983-09-01 CLOSED TANK, IN PARTICULAR OF AN INTERNALLY PROTECTED WATER HEATER, AND METHOD FOR PRODUCING SUCH PROTECTION
FR8314138 1983-09-01

Publications (1)

Publication Number Publication Date
EP0143731A1 true EP0143731A1 (en) 1985-06-05

Family

ID=9291987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84440037A Withdrawn EP0143731A1 (en) 1983-09-01 1984-08-24 Closed reservoir, especially a water heater with internal protection, and process for realising this protection

Country Status (2)

Country Link
EP (1) EP0143731A1 (en)
FR (1) FR2551424B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626233A1 (en) * 1993-05-26 1994-11-30 VIESSMANN WERKE GmbH &amp; CO. Method of manufacturing an internally coated domestic water storage
EP0794268A1 (en) * 1996-03-06 1997-09-10 Vacuumschmelze GmbH Process for improving corrosion protection of aluminium coated surfaces
WO2007083029A2 (en) * 2006-01-20 2007-07-26 Sa Julien Lacaze Tank made of a corrosion-resistant composite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097566A1 (en) * 2009-02-24 2010-09-02 David Luke Pringle Improved fluid container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764124A (en) * 1952-02-09 1956-09-25 Smith Corp A O Galvanizing interior of container
US2766200A (en) * 1952-09-04 1956-10-09 Westinghouse Electric Corp Water heating apparatus
DE2941850A1 (en) * 1978-10-16 1980-04-30 Nisshin Steel Co Ltd Overageing hot dip coated steel - to improve formability, is carried out continuously and involves heating up and cooling at specified rates

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764124A (en) * 1952-02-09 1956-09-25 Smith Corp A O Galvanizing interior of container
US2766200A (en) * 1952-09-04 1956-10-09 Westinghouse Electric Corp Water heating apparatus
DE2941850A1 (en) * 1978-10-16 1980-04-30 Nisshin Steel Co Ltd Overageing hot dip coated steel - to improve formability, is carried out continuously and involves heating up and cooling at specified rates

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626233A1 (en) * 1993-05-26 1994-11-30 VIESSMANN WERKE GmbH &amp; CO. Method of manufacturing an internally coated domestic water storage
EP0794268A1 (en) * 1996-03-06 1997-09-10 Vacuumschmelze GmbH Process for improving corrosion protection of aluminium coated surfaces
US6106894A (en) * 1996-03-06 2000-08-22 Vacuumschmelze Gmbh Method for improving the protection against corrosion of a surface coated with aluminum
WO2007083029A2 (en) * 2006-01-20 2007-07-26 Sa Julien Lacaze Tank made of a corrosion-resistant composite
FR2896489A1 (en) * 2006-01-20 2007-07-27 Julien Lacaze Sa Sa CORROSION RESISTANT COMPOSITE MATERIAL TANK
WO2007083029A3 (en) * 2006-01-20 2007-09-27 Julien Lacaze Sa Tank made of a corrosion-resistant composite

Also Published As

Publication number Publication date
FR2551424A1 (en) 1985-03-08
FR2551424B1 (en) 1985-10-18

Similar Documents

Publication Publication Date Title
BE1005554A3 (en) Method of manufacturing a tube wall multiple.
FR2648846A1 (en) LOCKING DEVICE FOR POWERED LONG REINFORCEMENT
LU100996B1 (en) DECORATIVE PANEL FOR SHOWER TRAYS
EP0143731A1 (en) Closed reservoir, especially a water heater with internal protection, and process for realising this protection
BE1000124A3 (en) Door door panel door or similar elements and their method of preparation.
FR2564940A1 (en) PROCESS FOR FIXING POROUS CERAMIC MATERIAL
CA2279132A1 (en) Process for thermal treatment of a part using at least one thermal transfer liquid and condensation oven for implementing it
FR2679807A1 (en) PROCESS FOR BRAKING IN SITU A METALLIC ELEMENT ON A METAL SUPPORT AND DEVICE FOR IMPLEMENTING IT.
EP0767714B1 (en) Side wall for a continuous sheet metal casting machine
EP0472468A1 (en) Substrate lining process and device and lining obtained therewith
FR2566904A1 (en) PROTECTIVE SLEEVE FOR TEMPERATURE SENSOR
FR2474677A1 (en) FLEXIBLE PLASTIC HEATING TUBE
FR2514806A1 (en) WALL CRACKING PROCESS
EP0323348A1 (en) Process for manufacturing a heating plate, and related heating article
BE1012107A6 (en) Trough connection method
BE1005488A5 (en) BARRIER AND HOUSING fireproof.
FR2595982A1 (en) Electric water heater and its manufacturing process
EP1229185B1 (en) Lining for a swimming pool
FR2532975A1 (en) Raised terrace or balcony floor drainage pipe
FR2577241A1 (en) Defective spot repair in enamel layer
FR2723520A1 (en) Piece of jewellery
FR2621942A1 (en) Spacer for reinforced-concrete shuttering
FR2679937A1 (en) Method for manufacturing a corrosion-resistant stanchion base
EP0094437A1 (en) Opening panel, especially a fully adjustable motor vehicle opening roof
FR2578175A1 (en) Manual applicator for hot melt adhesive

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

Designated state(s): AT BE CH DE GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850925

17Q First examination report despatched

Effective date: 19860121

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860531

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WENDLING, JEAN