EP0647504A1 - Surface tattoing device - Google Patents

Surface tattoing device Download PDF

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Publication number
EP0647504A1
EP0647504A1 EP94490046A EP94490046A EP0647504A1 EP 0647504 A1 EP0647504 A1 EP 0647504A1 EP 94490046 A EP94490046 A EP 94490046A EP 94490046 A EP94490046 A EP 94490046A EP 0647504 A1 EP0647504 A1 EP 0647504A1
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EP
European Patent Office
Prior art keywords
reservoir
marking
pressurized fluid
source
gun
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Withdrawn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
EP94490046A
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German (de)
French (fr)
Inventor
Denis Patout
Jean-Baptiste Demoustier
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.)
L Et H Finances SA
Original Assignee
L Et H Finances 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 L Et H Finances SA filed Critical L Et H Finances SA
Publication of EP0647504A1 publication Critical patent/EP0647504A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass

Definitions

  • the present invention relates to a device for tattooing surfaces which will find, for example, its application for marking vehicle windows in order in particular to combat theft.
  • the technique used for this operation consists in using a stencil, which has a series of cutouts corresponding to the codes and information that one wishes to mark, and in spraying, under pressure, an abrasive powder such as sand by the through a pistol-type projection tool to ensure marking of the glass.
  • the object of the present invention is to remedy these drawbacks by proposing a device for tattooing surfaces, in particular glass surfaces, of a simple design which does not require the installation of complex means, and which makes it possible to obtain control of the marking depth whatever the type and / or nature of the material to be marked and the conditions under which the operation is carried out.
  • Another object of the present invention is to provide a tattooing device which can be manufactured for a low price and which can be adapted to all the equipment currently used, which increases its usability.
  • Another object of the present invention is to provide a tattoo device which is robust, of convenient maintenance and whose use can be done without requiring the intervention of qualified personnel.
  • the device for tattooing surfaces intended in particular for marking vehicle windows, comprising at least one stencil and a projection tool, connected to a source of pressurized fluid and to a reserve of abrasive powder, is characterized in that it comprises a reservoir of pressurized fluid, interposed between the source and the gun, having a defined internal volume "V" and means for ensuring a sequential and gradual regulation of the introduction and evacuation of the pressurized fluid inside the tank in order to obtain a marking according to a determined depth of said glass.
  • V internal volume
  • the subject of the present invention is a device for tattooing surfaces, which will find its application in particular for marking windows of motor vehicles, and in particular for combating theft.
  • Figure 1 shows schematically the side windows 1 of a motor vehicle 2 on which is engraved an identification number 3, which, in the example chosen, is formed by a combination of numbers but, of course, it could include d other patterns or information such as letters, symbols, special graphics, etc.
  • the marking is ensured by the use of a device 4 comprising at least one stencil 5 having cutouts 6 corresponding to the identification which it is desired to mark and a projection tool 7, constituted here by a gun, connected to a source of pressurized fluid 8, such as for example compressed air, as well as to a reserve 9 of an abrasive powder such as sand.
  • a source of pressurized fluid 8 such as for example compressed air
  • a reserve 9 of an abrasive powder such as sand.
  • the stencil 5 ensures a clear tracing of the symbols to be marked or inscribed on the glass and it is preferably made of a resistant material and suitable for such applications.
  • the device 4 comprises a reservoir 10, of pressurized fluid, interposed between the source of pressurized fluid 8, constituted for example by a compressed air compressor capable of ensuring a regulated and variable pressurization depending on the air volume requirements, and the gun 7.
  • This reservoir 10 has a determined interior volume "V" and means 11 for ensuring sequential and gradual regulation of the introduction and evacuation of the fluid under pressure so as to to obtain a marking according to a determined controlled depth of said glass.
  • the marking depth is variable depending on the nature and / or the type of material that one wishes to mark, but, good results are obtained by controlling the marking depth by means of the device according to the invention.
  • the reservoir 10 is for example constituted by a calibrated pipe, one of the ends of which is connected to the source 8 and the other of the ends of which is connected here to a connection nozzle 12 opening into the gun 7 .
  • the means 11 consist of an outlet orifice 13 for the pressurized fluid having a diameter "d1" greater than the diameter "d2" of an orifice 14 for introducing said pressurized fluid inside the tank 10.
  • the device comprises means 15 for limiting the diameter "d2" of introduction of the fluid constituted for example by a washer or by any other equivalent means.
  • the gun 7 includes a trigger 16 capable of taking two positions so as to ensure a homogeneous and regular distribution of the sand allowing quality marking to be obtained.

Abstract

Device (4) for tattooing surfaces, intended especially for marking windows of vehicles, comprising at least one stencil (5) and a spraying tool (7) connected to a source (8) of pressurised fluid and to a reservoir (9) of abrasive powder. According to the invention, it includes a fluid reservoir (10) interposed between the source (8) and the gun (7), having a given internal volume "V" and means (11) for bringing about a sequential and gradual regulation of the introduction and evacuation of the pressurised fluid into and from inside the reservoir (10) with a view to obtaining marking of the said glass to a given depth. Application to the marking of the windows of vehicles. <IMAGE>

Description

La présente invention a pour objet un dispositif de tatouage de surfaces qui trouvera par exemple son application pour marquer des vitres de véhicules afin notamment de lutter contre le vol.The present invention relates to a device for tattooing surfaces which will find, for example, its application for marking vehicle windows in order in particular to combat theft.

Devant la recrudescence des vols de véhicules, de nombreux systèmes de protection mécaniques ou électroniques ont été mis au point. On peut par exemple citer des dispositifs mécaniques qui ont pour but de bloquer la direction du véhicule lorsque la clé de contact est absente, ou bien, des dispositifs électroniques actionnés par exemple sous l'action de contraintes non désirées ou par l'introduction d'une personne à l'intérieur de l'habitacle du véhicule.In the face of an increase in theft of vehicles, numerous mechanical or electronic protection systems have been developed. Mention may for example be made of mechanical devices which have the purpose of blocking the steering of the vehicle when the ignition key is absent, or else, electronic devices actuated for example under the action of unwanted stresses or by the introduction of a person inside the passenger compartment of the vehicle.

Toutefois, quel que soit le type de dispositif utilisé, il n'apporte pas entière satisfaction et ne permette pas de remédier à la recrudescence des vols de véhicules.However, whatever the type of device used, it does not provide complete satisfaction and does not make it possible to remedy the upsurge in vehicle thefts.

C'est la raison pour laquelle on a pensé à marquer, de manière non falsifiable, différentes pièces du véhicule et, plus particulièrement, les vitres dans la mesure où leur identification est aisée depuis l'extérieur et qu'il est également difficile de maquiller le marquage réalisé.This is the reason why it has been thought to mark, in a non-falsifiable manner, different parts of the vehicle and, more particularly, the windows insofar as their identification is easy from the outside and it is also difficult to make up the marking carried out.

La technique mise en oeuvre pour cette opération consiste à utiliser un pochoir, qui présente une série de découpes correspondant aux codes et aux informations que l'on désire marquer, et à projeter, sous pression, une poudre abrasive telle que du sable par l'intermédiaire d'un outil de projection du genre pistolet afin d'assurer un marquage de la vitre.The technique used for this operation consists in using a stencil, which has a series of cutouts corresponding to the codes and information that one wishes to mark, and in spraying, under pressure, an abrasive powder such as sand by the through a pistol-type projection tool to ensure marking of the glass.

Or, cette technique en pratique n'apporte pas toujours satisfaction, notamment dans le cas de vitres réalisées en verre trempée, dans la mesure où ce marquage affaiblit localement le verre ce qui, on le conçoit, est préjudiciable pour des vitres de véhicule.However, this technique in practice is not always satisfactory, in particular in the case of panes made of tempered glass, insofar as this marking locally weakens the glass which, it will be appreciated, is detrimental for vehicle panes.

Cette diminution de la résistance du verre trempée est par ailleurs d'autant plus grande que la profondeur de marquage est importante.This reduction in the resistance of the toughened glass is also greater the greater the depth of marking.

Pour contrôler cette profondeur, on a pensé à équiper les dispositifs actuellement utilisés de moyens tels que des compteurs, pour ajuster le temps de la projection, associés éventuellement à des moyens de régulation et de contrôle de la mise en fonctionnement du pistolet ou de l'introduction du fluide sous pression à l'intérieur de l'outil de projection.To control this depth, we thought of equip the devices currently used with means such as counters, to adjust the projection time, possibly associated with means for regulating and controlling the activation of the gun or the introduction of the pressurized fluid inside. of the projection tool.

Toutefois, de telles techniques sont complexes, d'un emploi délicat et ne permettent pas d'obtenir les résultats escomptés notamment dans le cas de marquage des vitres selon des profondeurs variables.However, such techniques are complex, of delicate use and do not make it possible to obtain the expected results, in particular in the case of marking the panes according to variable depths.

La présente invention a pour but de remédier à ces inconvénients en proposant un dispositif de tatouage de surfaces, notamment de surfaces vitrées, d'une conception simple ne nécessitant pas la mise en place de moyens complexes, et qui permet d'obtenir un contrôle de la profondeur de marquage quel que soit le type et/ou la nature du matériau à marquer et les conditions dans lesquelles l'opération est réalisée.The object of the present invention is to remedy these drawbacks by proposing a device for tattooing surfaces, in particular glass surfaces, of a simple design which does not require the installation of complex means, and which makes it possible to obtain control of the marking depth whatever the type and / or nature of the material to be marked and the conditions under which the operation is carried out.

Un autre but de la présente invention est de proposer un dispositif de tatouage qui peut être fabriqué pour un prix modique et qui peut être adapté sur tous les équipements actuellement utilisés, ce qui accroît ses capacités d'utilisation.Another object of the present invention is to provide a tattooing device which can be manufactured for a low price and which can be adapted to all the equipment currently used, which increases its usability.

Un autre but de la présente invention est de proposer un dispositif de tatouage qui est robuste, d'un entretien commode et dont l'utilisation peut être faite sans nécessiter l'intervention d'un personnel qualifié.Another object of the present invention is to provide a tattoo device which is robust, of convenient maintenance and whose use can be done without requiring the intervention of qualified personnel.

D'autres buts et avantages de la présente invention apparaîtront au cours de la description qui va suivre qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the present invention will appear during the description which follows which is given only for information and which is not intended to limit it.

A cette fin, selon l'invention, le dispositif de tatouage de surfaces, destiné notamment au marquage de vitres de véhicules, comprenant au moins un pochoir et à un outil de projection, relié à une source de fluide sous pression et à une réserve de poudre abrasive, est caractérisé par le fait qu'il comporte un réservoir de fluide sous pression, intercalé entre la source et le pistolet, présentant un volume intérieur "V" défini et des moyens pour assurer une régulation séquentielle et graduelle de l'introduction et de l'évacuation du fluide sous pression à l'intérieur du réservoir en vue d'obtenir un marquage selon une profondeur déterminée du dit verre.To this end, according to the invention, the device for tattooing surfaces, intended in particular for marking vehicle windows, comprising at least one stencil and a projection tool, connected to a source of pressurized fluid and to a reserve of abrasive powder, is characterized in that it comprises a reservoir of pressurized fluid, interposed between the source and the gun, having a defined internal volume "V" and means for ensuring a sequential and gradual regulation of the introduction and evacuation of the pressurized fluid inside the tank in order to obtain a marking according to a determined depth of said glass.

La présente invention sera mieux comprise à la lecture de la description suivante accompagnée des dessins en annexe parmi lesquels :

  • la figure 1 est une vue schématique qui illustre un véhicule automobile dont les vitres ont été marquées,
  • la figure 2 est une vue schématique qui illustre un dispositif de tatouage de verre conforme à celui de l'invention,
  • la figure 3 est une vue schématique qui montre plus particulièrement le réservoir de fluide sous pression conforme à l'invention.
The present invention will be better understood on reading the following description accompanied by the accompanying drawings, among which:
  • FIG. 1 is a schematic view which illustrates a motor vehicle whose windows have been marked,
  • FIG. 2 is a schematic view which illustrates a glass tattooing device in accordance with that of the invention,
  • Figure 3 is a schematic view which shows more particularly the pressurized fluid reservoir according to the invention.

La présente invention a pour objet un dispositif de tatouage de surfaces, qui trouvera son application notamment pour le marquage de vitres de véhicules automobiles, et en particulier pour lutter contre le vol.The subject of the present invention is a device for tattooing surfaces, which will find its application in particular for marking windows of motor vehicles, and in particular for combating theft.

La figure 1 schématise les vitres latérales 1 d'un véhicule automobile 2 sur lesquelles est gravé un numéro d'identification 3, qui, dans l'exemple choisi, est formé d'une combinaison de chiffres mais, bien entendu, il pourrait comporter d'autres motifs ou informations tels que des lettres, des symboles, un graphisme particulier, etc.Figure 1 shows schematically the side windows 1 of a motor vehicle 2 on which is engraved an identification number 3, which, in the example chosen, is formed by a combination of numbers but, of course, it could include d other patterns or information such as letters, symbols, special graphics, etc.

Selon l'invention, le marquage est assuré par la mise en oeuvre d'un dispositif 4 comprenant au moins un pochoir 5 présentant des découpes 6 correspondant à l'identification que l'on désire marquer et un outil de projection 7, constitué ici par un pistolet, relié à une source de fluide sous pression 8, tel que par exemple de l'air comprimé, ainsi qu'à une réserve 9 d'une poudre abrasive telle que du sable.According to the invention, the marking is ensured by the use of a device 4 comprising at least one stencil 5 having cutouts 6 corresponding to the identification which it is desired to mark and a projection tool 7, constituted here by a gun, connected to a source of pressurized fluid 8, such as for example compressed air, as well as to a reserve 9 of an abrasive powder such as sand.

Le pochoir 5 permet d'assurer un tracé net des symboles à marquer ou à inscrire sur le verre et il est de préférence réalisé dans un matériau résistant et adapté à de telles applications.The stencil 5 ensures a clear tracing of the symbols to be marked or inscribed on the glass and it is preferably made of a resistant material and suitable for such applications.

Selon l'invention, le dispositif 4 comporte un réservoir 10, de fluide sous pression, intercalé entre la source de fluide sous pression 8, constituée par exemple par un compresseur à air comprimé apte à assurer une mise sous pression régulée et variable en fonction des besoins d'un volume d'air, et le pistolet 7.According to the invention, the device 4 comprises a reservoir 10, of pressurized fluid, interposed between the source of pressurized fluid 8, constituted for example by a compressed air compressor capable of ensuring a regulated and variable pressurization depending on the air volume requirements, and the gun 7.

Ce réservoir 10, tel qu'il est plus particulièrement illustré à la figure 3, présente un volume intérieur "V" déterminé et des moyens 11 pour assurer une régulation séquentielle et graduelle de l'introduction et de l'évacuation du fluide sous pression afin d'obtenir un marquage selon une profondeur contrôlée déterminée du dit verre.This reservoir 10, as more particularly illustrated in FIG. 3, has a determined interior volume "V" and means 11 for ensuring sequential and gradual regulation of the introduction and evacuation of the fluid under pressure so as to to obtain a marking according to a determined controlled depth of said glass.

Plus précisément, grâce à l'invention, on obtient de bons résultats lorsque l'on désire une profondeur de marquage inférieure ou égale à 6/100 permettant notamment d'éviter les phénomènes de fragilisation du verre trempé que l'on rencontre avec les dispositifs actuellement utilisés.More specifically, thanks to the invention, good results are obtained when a marking depth of less than or equal to 6/100 is desired, in particular making it possible to avoid the embrittlement phenomena of the tempered glass encountered with the devices. currently in use.

Bien entendu, la profondeur de marquage est variable en fonction de la nature et/ou du type du matériau que l'on désire marquer mais, l'on obtient de bons résultats grâce à un contrôle de la profondeur de marquage par l'intermédiaire du dispositif conforme à l'invention.Of course, the marking depth is variable depending on the nature and / or the type of material that one wishes to mark, but, good results are obtained by controlling the marking depth by means of the device according to the invention.

En ce qui concerne le réservoir 10, il est par exemple constitué par un tuyau calibré dont l'une des extrémités est connectée à la source 8 et dont l'autre des extrémités est connectée ici à un embout de raccordement 12 débouchant dans le pistolet 7.As regards the reservoir 10, it is for example constituted by a calibrated pipe, one of the ends of which is connected to the source 8 and the other of the ends of which is connected here to a connection nozzle 12 opening into the gun 7 .

On conçoit qu'il est tout à fait envisageable, en fonction des besoins, d'avoir recours à tout autre type de réservoir adapté aux applications que l'on désire réaliser et qui serait apte à être connecté avec la source de fluide sous pression 8 et un outil de projection 7.It is understandable that it is entirely conceivable, depending on the needs, to have recourse to any other type of reservoir suitable for the applications that one wishes to realize and which would be able to be connected with the source of pressurized fluid 8 and a projection tool 7.

Les moyens 11 sont constitués par un orifice d'évacuation 13 du fluide sous pression présentant un diamètre "d₁" supérieur au diamètre "d₂" d'un orifice 14 d'introduction du dit fluide sous pression à l'intérieur du réservoir 10.The means 11 consist of an outlet orifice 13 for the pressurized fluid having a diameter "d₁" greater than the diameter "d₂" of an orifice 14 for introducing said pressurized fluid inside the tank 10.

Plus particulièrement, le dispositif comporte des moyens 15 de limitation du diamètre "d₂" d'introduction du fluide constitué par exemple par une rondelle ou par tout autre moyen équivalent.More particularly, the device comprises means 15 for limiting the diameter "d₂" of introduction of the fluid constituted for example by a washer or by any other equivalent means.

De préférence, le rapport D = d₁/d₂ sera compris entre 2 et 6 et que l'on a obtenu de bons résultats avec un rapport D = 4.Preferably, the ratio D = d₁ / d₂ will be between 2 and 6 and that good results have been obtained with a ratio D = 4.

En ce qui concerne le pistolet 7, il comporte une gachette 16 apte à prendre deux positions de manière à assurer une diffusion du sable homogène et régulière permettant d'obtenir un marquage de qualité.Regarding the gun 7, it includes a trigger 16 capable of taking two positions so as to ensure a homogeneous and regular distribution of the sand allowing quality marking to be obtained.

En outre, selon l'invention, grâce aux moyens 11, on obtient une détente rapide, précise et séquentielle par l'orifice 13, du volume "V" de fluide sous pression disposé à l'intérieur du réservoir 10 du fait qu'il se produit un gradient localisé de pression à l'intérieur de ce réservoir provenant d'une introduction selon un débit moindre du fluide sous pression par l'orifice 14 en raison de son diamètre "d₂" inférieur au diamètre "d₁".In addition, according to the invention, thanks to the means 11, a rapid, precise and sequential expansion is obtained through the orifice 13, of the volume "V" of pressurized fluid placed inside the reservoir 10 because it a localized pressure gradient occurs inside this reservoir originating from an introduction at a lower flow rate of the fluid under pressure through the orifice 14 due to its diameter "d₂" less than the diameter "d₁".

Ainsi, grâce à ce phénomène, on obtient une régulation en pression ou dans le temps, de la diffusion et de la pulvérisation du sable et il est possible de contrôler de manière simple et précise la profondeur de marquage du verre selon les besoins.Thus, thanks to this phenomenon, pressure or time regulation is obtained, the diffusion and spraying of the sand and it is possible to control in a simple and precise manner the depth of marking of the glass as required.

Bien entendu, d'autres mises en oeuvre de la présente invention, auraient pu être envisagées sans pour autant sortir du cadre de celle-ci.Of course, other implementations of the present invention could have been envisaged without departing from the scope thereof.

Claims (8)

Dispositif de tatouage (4) de surfaces, destiné notamment au marquage de vitres de véhicules, comprenant au moins un pochoir (5) et un outil de projection (7), relié à une source (8) de fluide sous pression et à une réserve (9) de poudre abrasive, caractérisé en ce qu'il comporte un réservoir (10) de fluide sous pression, intercalé entre la source (8) et le pistolet (7), présentant un volume intérieur "V" défini et des moyens (11) pour assurer une régulation séquentielle et graduelle de l'introduction de l'évacuation du fluide sous pression à l'intérieur du réservoir (10) en vue d'obtenir un marquage selon une profondeur déterminée du dit verre.Device for tattooing (4) surfaces, intended in particular for marking vehicle windows, comprising at least one stencil (5) and a projection tool (7), connected to a source (8) of pressurized fluid and to a reserve (9) of abrasive powder, characterized in that it comprises a reservoir (10) of pressurized fluid, interposed between the source (8) and the gun (7), having a defined internal volume "V" and means ( 11) to ensure sequential and gradual regulation of the introduction of the evacuation of the pressurized fluid inside the reservoir (10) in order to obtain a marking according to a determined depth of said glass. Dispositif selon la revendication 1, caractérisé en ce que le réservoir (10) du fluide sous pression se présente sous la forme d'un tuyau calibré.Device according to claim 1, characterized in that the reservoir (10) of the pressurized fluid is in the form of a calibrated pipe. Dispositif selon la revendication 1, caractérisé en ce que les moyens (11) sont constitués par un orifice d'évacuation (13) du fluide présentant un diamètre "d₁" supérieur au diamètre "d₂" de l'orifice (14) d'introduction du fluide sous pression.Device according to claim 1, characterized in that the means (11) consist of an outlet orifice (13) for the fluid having a diameter "d₁" greater than the diameter "d₂" of the orifice (14) for introduction pressurized fluid. Dispositif selon la revendication 3, caractérisé en ce qu'il comporte des moyens (15) de limitation de l'ouverture de l'orifice (14) d'introduction du fluide à l'intérieur du réservoir (10).Device according to claim 3, characterized in that it comprises means (15) for limiting the opening of the orifice (14) for introducing the fluid inside the reservoir (10). Dispositif selon la revendication 4, caractérisé en ce que les moyens (15) sont constitués par une rondelle (16).Device according to claim 4, characterized in that the means (15) consist of a washer (16). Dispositif selon la revendication 3, caractérisé en ce que le rapport D = d₁/d₂ et sensiblement compris entre 2 et 6.Device according to claim 3, characterized in that the ratio D = d₁ / d₂ and substantially between 2 and 6. Dispositif selon la revendication 6, caractérisé en ce que le rapport D est de 4.Device according to claim 6, characterized in that the ratio D is 4. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend un pistolet (7) avec une gâchette (16) apte à prendre deux positions.Device according to claim 1, characterized in that it comprises a gun (7) with a trigger (16) capable of taking two positions.
EP94490046A 1993-10-06 1994-10-05 Surface tattoing device Withdrawn EP0647504A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9312094A FR2710865B1 (en) 1993-10-06 1993-10-06 Device for tattooing surfaces.
FR9312094 1993-10-06

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EP0647504A1 true EP0647504A1 (en) 1995-04-12

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FR (1) FR2710865B1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048918A (en) * 1975-08-13 1977-09-20 Identicar Corporation Of America Stenciling apparatus and identification system
EP0008893A1 (en) * 1978-08-18 1980-03-19 Protexcar Limited Method and apparatus for marking surfaces by abrasion
GB2064814A (en) * 1979-12-05 1981-06-17 Companion Pty Ltd Improvements relating to pressure reducers
FR2638385A1 (en) * 1988-10-28 1990-05-04 Violet Jean Claude Device for controlling-monitoring an abrasive jet
US5031373A (en) * 1989-10-27 1991-07-16 Montgomery David W Etching machine and method
US5166885A (en) * 1991-01-28 1992-11-24 General Electric Company Non-destructive monitoring of surfaces by 3-D profilometry using a power spectra

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048918A (en) * 1975-08-13 1977-09-20 Identicar Corporation Of America Stenciling apparatus and identification system
EP0008893A1 (en) * 1978-08-18 1980-03-19 Protexcar Limited Method and apparatus for marking surfaces by abrasion
GB2064814A (en) * 1979-12-05 1981-06-17 Companion Pty Ltd Improvements relating to pressure reducers
FR2638385A1 (en) * 1988-10-28 1990-05-04 Violet Jean Claude Device for controlling-monitoring an abrasive jet
US5031373A (en) * 1989-10-27 1991-07-16 Montgomery David W Etching machine and method
US5166885A (en) * 1991-01-28 1992-11-24 General Electric Company Non-destructive monitoring of surfaces by 3-D profilometry using a power spectra

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 8125, Derwent World Patents Index; AN 81-F7360D *

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Publication number Publication date
FR2710865A1 (en) 1995-04-14
FR2710865B1 (en) 1995-12-29

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