WO2007128887A1 - Device for indicating the pressure of a system - Google Patents
Device for indicating the pressure of a system Download PDFInfo
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- WO2007128887A1 WO2007128887A1 PCT/FR2006/050421 FR2006050421W WO2007128887A1 WO 2007128887 A1 WO2007128887 A1 WO 2007128887A1 FR 2006050421 W FR2006050421 W FR 2006050421W WO 2007128887 A1 WO2007128887 A1 WO 2007128887A1
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- Prior art keywords
- pressure
- piston
- circuit
- tested
- housing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
Definitions
- the present invention relates to the field of devices for indicating the pressure of a circuit, in particular in a specific environment for press tools and circuits of gas springs exposed to a hostile environment, such as shocks, chips and oil, and has for object such a device for visually indicating a pressure drop with respect to a predetermined threshold, in a pneumatic or hydraulic circuit.
- a first disadvantage inherent in these devices is that they have a relatively large size, so they significantly change the size of the devices on which they are mounted.
- a second disadvantage is that they are of a relatively complicated design, so that their cost is high, whereas it is, in general, only desired to know if a predetermined threshold value prevails in the circuit to be tested.
- the object of the present invention is to overcome these drawbacks and to propose a device for indicating the pressure having, on the one hand, a reduced bulk so as to be able to be mounted directly on the circuit or the device to be tested and, d on the other hand, a simple design.
- Such a device must also be provided with means for increasing or decreasing the pressure in the device or the circuit under test as a function of the pressure measured.
- the subject of the invention is a device for indicating the pressure of a circuit, in particular in a specific environment for press tools and circuits for gas springs exposed to a hostile environment, such as shocks.
- chips and oil constituted by a substantially longitudinal body, in which is mounted a piston intended to be exposed to the pressure of the circuit to be tested, said piston being guided in a housing concentric with the longitudinal axis of the body and being able to move, under the effect of the pressure of the circuit to be tested, against the force exerted on said piston by a setting spring, characterized in that said piston seals in a pressure chamber formed in said body, in the extension of the housing and intended to be connected to the circuit to be tested, and in that it is capable of occupying two viewing positions corresponding respectively to a pressure level in the circuit to be tested greater than the force of the setting spring applied to said piston, and at a lower pressure level thereto.
- FIG. a partially cutaway perspective view of the pressure indicating device of a circuit according to the present invention
- FIG. 2 is a sectional view along the longitudinal axis of the body of the device of FIG. 1 indicating that the pressure tested is lower than a threshold pressure
- FIG. 3 is a view similar to that of FIG. 2 in which the device indicates that the pressure tested is greater than a threshold pressure.
- the appended figures represent a device for indicating the pressure of a circuit, in particular in a specific environment for press tools and circuits for gas springs exposed to a hostile environment, such as shocks, shavings and water.
- oil consisting of a substantially longitudinal body 2, in which is mounted a piston 3 intended to be exposed to the pressure of the circuit to be tested, said piston 3 being guided in a housing 4 concentric with the longitudinal axis X of the body 2 and being able to move, under the effect of the pressure of the circuit to be tested, against the force exerted on said piston 3 by a calibration spring 5.
- said piston 3 seals in a pressure chamber 6 made in said body 2, in the extension of the housing 4 and intended to be connected to the circuit to be tested, and in that it is capable of occupying two corresponding viewing positions, respectively at a pressure level in the test circuit greater than the force of the setting spring 5 applied to said piston 3, and at a lower pressure level thereto.
- This pressure level which is compared the pressure of the circuit to be tested, may correspond to a threshold pressure beyond which said circuit to be tested is considered to be able to function correctly.
- the device 1 according to the present invention thus makes it possible, during a simple test, to verify that the pressure of the tested circuit is correct. Depending on the viewing position taken by the piston 3, the user knows whether the measured pressure is greater or less than the threshold pressure.
- the piston 3 can be made in the form of a stepped part in three parts, namely: a lower part 7 intended to cooperate with the pressure chamber 6 and guided in the latter, an intermediate portion 8 in the form of shoulder extending above the pressure chamber 6, in a lower portion 11 of the housing 4, of the same diameter as said housing 4 and defined by a sleeve of guide 13 of the calibration spring 5 integrated in the upper part 12 of the housing 4, and an upper part 9 surrounded by the setting spring 5, extending in the guide sleeve 13, this upper part 9 opening out of the housing 4 to through a cover 14 for closing the housing 4 and holding the setting spring 5 and the guide sleeve 13.
- the stroke of the piston is limited in the housing 4 by the intermediate portion 8 abutment, when the pressure in the pressure chamber 6 is such that it can counter the force of the calibration spring 5, against the guide sleeve 13 and, when the pressure in the pressure chamber 6 is too small relative to the force of the calibration spring 5, against the lower edge of the housing 4, that is to say the edge located on the side of the pressure chamber 6.
- cover 14 can be fixed to the body 2 by screwing, welding or any similar fastening means.
- the calibration spring 5 may exert a force on the piston 3 slightly. greater than the minimum required pressure in the circuit to be tested.
- the piston 3 and the housing 4 can be made so that a portion 15 of the upper part
- FIG. 2 shows the piston 3 in a viewing position corresponding to a pressure level in the circuit under test less than the force of the setting spring 5 applied to said piston 3 and in which the portion 15 of the piston 3 is flush with the face closing cover 14.
- FIG. 3 represents, in turn, the piston 3 in a viewing position corresponding to a pressure level in the test circuit greater than the force of the setting spring 5 applied to said piston 3 and in which the piston 3 has been moved towards the closing cap 15 and abuts against the guide sleeve 13, so that the portion 15 of the upper part 9 of the piston 3 is released from the closure cover 14.
- the end surface 16 of the portion 15 of the upper part 9 of the piston 3 may have a visual alarm signaling.
- the circular surface 17 of said portion 15 may have a visual signaling relating to a normal pressure.
- the end surface 16 is painted red so as to materialize the visual alarm signaling and that the visual signaling for a normal pressure corresponds to a circular surface 17 painted green.
- the pressure chamber 6 can be connected to the circuit to be tested by means of a hollow pressure screw 18.
- the device according to the invention may have a connecting means 19 to a pressurizing device of the circuit to be tested, said connecting means 19 being in communication with the pressure chamber 6.
- the pressurizing device can be used, either to put the initial pressure in the circuit before testing it, or to increase or reduce the pressure in the circuit after measuring an unsatisfactory pressure.
- the device 1 for indicating the pressure of a circuit therefore has the advantage of being easy to use, it suffices to fix it by means of the hollow pressure screw 18 on the circuit to test and visualize the upper portion portion 9 of the piston 3 to know if the pressure in said circuit is acceptable or not.
- the circuit to be tested may be, for example, a hydraulic cylinder, a nitrogen spring or any other circuit under pressure of gas or liquid.
- the device 1 according to the invention is, moreover, of simple configuration, and therefore inexpensive to manufacture. In addition, its use is also inexpensive because it requires no energy input for the latter.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Dispositif d'indication de la pression d'un circuit Device for indicating the pressure of a circuit
La présente invention concerne le domaine des dispositifs d'indication de la pression d'un circuit, en particulier dans un environnement spécifique aux outillages de presse et aux circuits des ressorts à gaz exposés à un environnement hostile, tel que des chocs, des copeaux et de l'huile, et a pour objet un tel dispositif permettant d'indiquer visuellement une chute de pression par rapport à un seuil prédéterminé, dans un circuit pneumatique ou hydraulique.The present invention relates to the field of devices for indicating the pressure of a circuit, in particular in a specific environment for press tools and circuits of gas springs exposed to a hostile environment, such as shocks, chips and oil, and has for object such a device for visually indicating a pressure drop with respect to a predetermined threshold, in a pneumatic or hydraulic circuit.
De tels dispositifs existent et se présentent en général sous la forme de pressostats ou de manomètres. Toutefois, ces dispositifs connus présentent un certain nombre d'inconvénients.Such devices exist and are generally in the form of pressure switches or manometers. However, these known devices have a number of disadvantages.
Un premier inconvénient inhérent à ces dispositifs est qu'ils présentent une taille relativement importante, de sorte qu'ils modifient considérablement l'encombrement des appareils sur lesquels ils sont montés. Un second inconvénient est qu'ils sont d'une conception relativement compliquée, de sorte que leur coût est élevé, alors qu'il est, en général, uniquement souhaité de savoir si une valeur de seuil prédéterminée règne dans le circuit à tester.A first disadvantage inherent in these devices is that they have a relatively large size, so they significantly change the size of the devices on which they are mounted. A second disadvantage is that they are of a relatively complicated design, so that their cost is high, whereas it is, in general, only desired to know if a predetermined threshold value prevails in the circuit to be tested.
La présente invention a pour but de pallier ces inconvénients et de proposer un dispositif d'indication de la pression présentant, d'une part, un encombrement réduit de manière à pouvoir être monté directement sur le circuit ou l'appareil à tester et, d'autre part, une conception simple.The object of the present invention is to overcome these drawbacks and to propose a device for indicating the pressure having, on the one hand, a reduced bulk so as to be able to be mounted directly on the circuit or the device to be tested and, d on the other hand, a simple design.
Un tel dispositif devra également être muni d'un moyen permettant d'augmenter ou de diminuer la pression dans l'appareil ou le circuit testé en fonction de la pression mesurée.Such a device must also be provided with means for increasing or decreasing the pressure in the device or the circuit under test as a function of the pressure measured.
A cet effet, l'invention a pour objet un dispositif d'indication de la pression d'un circuit, en particulier dans un environnement spécifique aux outillages de presse et aux circuits des ressorts à gaz exposés à un environnement hostile, tel que des chocs, des copeaux et de l'huile, constitué par un corps sensiblement longitudinal, dans lequel est monté un piston destiné à être exposé à la pression du circuit à tester, ledit piston étant guidé dans un logement concentrique à l'axe longitudinal du corps et étant apte à se déplacer, sous l'effet de la pression du circuit à tester, contre la force exercée sur ledit piston par un ressort de tarage, dispositif caractérisé en ce que ledit piston plonge de manière étanche dans une chambre de pression réalisée dans ledit corps, dans le prolongement du logement et destinée à être reliée au circuit à tester, et en ce qu'il est susceptible d'occuper deux positions de visualisation correspondant, respectivement à un niveau de pression dans le circuit à tester supérieur à la force du ressort de tarage appliquée sur ledit piston, et à un niveau de pression inférieur à cette dernière.For this purpose, the subject of the invention is a device for indicating the pressure of a circuit, in particular in a specific environment for press tools and circuits for gas springs exposed to a hostile environment, such as shocks. , chips and oil, constituted by a substantially longitudinal body, in which is mounted a piston intended to be exposed to the pressure of the circuit to be tested, said piston being guided in a housing concentric with the longitudinal axis of the body and being able to move, under the effect of the pressure of the circuit to be tested, against the force exerted on said piston by a setting spring, characterized in that said piston seals in a pressure chamber formed in said body, in the extension of the housing and intended to be connected to the circuit to be tested, and in that it is capable of occupying two viewing positions corresponding respectively to a pressure level in the circuit to be tested greater than the force of the setting spring applied to said piston, and at a lower pressure level thereto.
L'invention sera mieux comprise, grâce à la description ci- après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non limitatif, et expliqué avec référence aux dessins schématiques annexés, dans lesquels : la figure 1 est une vue en perspective, partiellement arrachée, du dispositif d'indication de la pression d'un circuit selon la présente invention ; la figure 2 est une vue en coupe selon l'axe longitudinal du corps du dispositif de la figure 1 indiquant que la pression testée est inférieure à une pression seuil, et la figure 3 est une vue similaire à celle de la figure 2 dans laquelle le dispositif indique que la pression testée est supérieure à une pression seuil.The invention will be better understood, thanks to the following description, which relates to a preferred embodiment, given by way of non-limiting example, and explained with reference to the attached schematic drawings, in which: FIG. a partially cutaway perspective view of the pressure indicating device of a circuit according to the present invention; FIG. 2 is a sectional view along the longitudinal axis of the body of the device of FIG. 1 indicating that the pressure tested is lower than a threshold pressure, and FIG. 3 is a view similar to that of FIG. 2 in which the device indicates that the pressure tested is greater than a threshold pressure.
Les figures annexées représentent un dispositif d'indication de la pression d'un circuit, en particulier dans un environnement spécifique aux outillages de presse et aux circuits des ressorts à gaz exposés à un environnement hostile, tel que des chocs, des copeaux et de l'huile, constitué par un corps 2 sensiblement longitudinal, dans lequel est monté un piston 3 destiné à être exposé à la pression du circuit à tester, ledit piston 3 étant guidé dans un logement 4 concentrique à l'axe longitudinal X du corps 2 et étant apte à se déplacer, sous l'effet de la pression du circuit à tester, contre la force exercée sur ledit piston 3 par un ressort de tarage 5. Selon l'invention, ledit piston 3 plonge de manière étanche dans une chambre de pression 6 réalisée dans ledit corps 2, dans le prolongement du logement 4 et destinée à être reliée au circuit à tester, et en ce qu'il est susceptible d'occuper deux positions de visualisation correspondant, respectivement à un niveau de pression dans le circuit à tester supérieur à la force du ressort de tarage 5 appliquée sur ledit piston 3, et à un niveau de pression inférieur à cette dernière. Ce niveau de pression, auquel est comparée la pression du circuit à tester, peut correspondre à une pression de seuil au-delà de laquelle ledit circuit à tester est considéré comme pouvant fonctionner de manière correcte. Le dispositif 1 selon la présente invention permet donc, lors d'un simple test, de vérifier que la pression du circuit testé est correcte. En fonction de la position de visualisation prise par le piston 3, l'utilisateur sait si la pression mesurée est supérieure ou inférieure à la pression seuil.The appended figures represent a device for indicating the pressure of a circuit, in particular in a specific environment for press tools and circuits for gas springs exposed to a hostile environment, such as shocks, shavings and water. oil, consisting of a substantially longitudinal body 2, in which is mounted a piston 3 intended to be exposed to the pressure of the circuit to be tested, said piston 3 being guided in a housing 4 concentric with the longitudinal axis X of the body 2 and being able to move, under the effect of the pressure of the circuit to be tested, against the force exerted on said piston 3 by a calibration spring 5. According to the invention, said piston 3 seals in a pressure chamber 6 made in said body 2, in the extension of the housing 4 and intended to be connected to the circuit to be tested, and in that it is capable of occupying two corresponding viewing positions, respectively at a pressure level in the test circuit greater than the force of the setting spring 5 applied to said piston 3, and at a lower pressure level thereto. This pressure level, which is compared the pressure of the circuit to be tested, may correspond to a threshold pressure beyond which said circuit to be tested is considered to be able to function correctly. The device 1 according to the present invention thus makes it possible, during a simple test, to verify that the pressure of the tested circuit is correct. Depending on the viewing position taken by the piston 3, the user knows whether the measured pressure is greater or less than the threshold pressure.
De manière caractéristique, et comme cela est représenté sur les figures 2 et 3, le piston 3 peut être réalisé sous la forme d'une pièce étagée en trois parties, à savoir : une partie inférieure 7 destinée à coopérer avec la chambre de pression 6 et guidée dans cette dernière, une partie intermédiaire 8 en forme d'épaulement s'étendant au- dessus de la chambre de pression 6, dans une partie inférieure 11 du logement 4, de même diamètre que ledit logement 4 et délimitée par un manchon de guidage 13 du ressort de tarage 5 intégré dans la partie supérieure 12 du logement 4, et une partie supérieure 9 entourée par le ressort de tarage 5, s'étendant dans le manchon de guidage 13, cette partie supérieure 9 débouchant hors du logement 4 à travers un couvercle 14 de fermeture du logement 4 et de maintien du ressort de tarage 5 et du manchon de guidage 13.Typically, and as shown in FIGS. 2 and 3, the piston 3 can be made in the form of a stepped part in three parts, namely: a lower part 7 intended to cooperate with the pressure chamber 6 and guided in the latter, an intermediate portion 8 in the form of shoulder extending above the pressure chamber 6, in a lower portion 11 of the housing 4, of the same diameter as said housing 4 and defined by a sleeve of guide 13 of the calibration spring 5 integrated in the upper part 12 of the housing 4, and an upper part 9 surrounded by the setting spring 5, extending in the guide sleeve 13, this upper part 9 opening out of the housing 4 to through a cover 14 for closing the housing 4 and holding the setting spring 5 and the guide sleeve 13.
La course du piston est limitée dans le logement 4 par la partie intermédiaire 8 butant, lorsque la pression dans la chambre de pression 6 est telle qu'elle peut contrer la force du ressort de tarage 5, contre le manchon de guidage 13 et, lorsque la pression dans la chambre de pression 6 est trop faible par rapport à la force du ressort de tarage 5, contre le bord inférieur du logement 4, c'est-à-dire le bord situé du côté de la chambre de pression 6. Le couvercle 14 peut être fixé au corps 2 par vissage, soudage ou tout moyen de fixation analogue.The stroke of the piston is limited in the housing 4 by the intermediate portion 8 abutment, when the pressure in the pressure chamber 6 is such that it can counter the force of the calibration spring 5, against the guide sleeve 13 and, when the pressure in the pressure chamber 6 is too small relative to the force of the calibration spring 5, against the lower edge of the housing 4, that is to say the edge located on the side of the pressure chamber 6. cover 14 can be fixed to the body 2 by screwing, welding or any similar fastening means.
De manière avantageuse, dans le cas où il est souhaité de comparer la pression d'un circuit à une pression seuil au-dessous de laquelle la pression est considérée comme non acceptable, le ressort de tarage 5 peut exercer une force sur le piston 3 légèrement supérieure à la pression minimale nécessaire dans le circuit à tester. - A -Advantageously, in the case where it is desired to compare the pressure of a circuit with a threshold pressure below which the pressure is considered to be unacceptable, the calibration spring 5 may exert a force on the piston 3 slightly. greater than the minimum required pressure in the circuit to be tested. - AT -
A cet effet, et selon l'invention, le piston 3 et le logement 4 peuvent être réalisés de telle sorte qu'une portion 15 de la partie supérieureFor this purpose, and according to the invention, the piston 3 and the housing 4 can be made so that a portion 15 of the upper part
9 du piston 3 sort du couvercle de fermeture 14 lorsque la pression dans le circuit à tester est supérieure à la force du ressort de tarage 5 exercée sur le piston 3 et déplace ce dernier en direction du couvercle de fermeture 15 et que la surface d'extrémité 16 de ladite portion 15 affleure avec la face du couvercle de fermeture 14 lorsque la pression dans le circuit à tester est inférieure à la force du ressort de tarage 5 exercée sur le piston 3, la partie intermédiaire 8 du piston 3 reposant alors sur le fond de la partie inférieure 11 du logement 4.9 of the piston 3 comes out of the closure cover 14 when the pressure in the circuit to be tested is greater than the force of the calibration spring 5 exerted on the piston 3 and displaces the latter in the direction of the closure lid 15 and that the surface of end 16 of said portion 15 is flush with the face of the closure cover 14 when the pressure in the circuit to be tested is less than the force of the calibration spring 5 exerted on the piston 3, the intermediate portion 8 of the piston 3 then resting on the bottom of the lower part 11 of the housing 4.
La figure 2 représente le piston 3 dans une position de visualisation correspondant à un niveau de pression dans le circuit à tester inférieur à la force du ressort de tarage 5 appliquée sur ledit piston 3 et dans laquelle la portion 15 du piston 3 affleure avec la face du couvercle de fermeture 14.FIG. 2 shows the piston 3 in a viewing position corresponding to a pressure level in the circuit under test less than the force of the setting spring 5 applied to said piston 3 and in which the portion 15 of the piston 3 is flush with the face closing cover 14.
La figure 3 représente, quant à elle, le piston 3 dans une position de visualisation correspondant à un niveau de pression dans le circuit à tester supérieur à la force du ressort de tarage 5 appliquée sur ledit piston 3 et dans laquelle le piston 3 a été déplacé en direction du couvercle de fermeture 15 et a buté contre le manchon de guidage 13, de telle manière que la portion 15 de la partie supérieure 9 du piston 3 est sortie du couvercle de fermeture 14.FIG. 3 represents, in turn, the piston 3 in a viewing position corresponding to a pressure level in the test circuit greater than the force of the setting spring 5 applied to said piston 3 and in which the piston 3 has been moved towards the closing cap 15 and abuts against the guide sleeve 13, so that the portion 15 of the upper part 9 of the piston 3 is released from the closure cover 14.
Ainsi, et de manière préférée, dans le cas où il est souhaité de comparer la pression d'un circuit à une pression seuil au-dessous de laquelle la pression est considérée comme non acceptable, la surface d'extrémité 16 de la portion 15 de la partie supérieure 9 du piston 3 peut présenter une signalisation visuelle d'alarme.Thus, and preferably, in the case where it is desired to compare the pressure of a circuit with a threshold pressure below which the pressure is considered unacceptable, the end surface 16 of the portion 15 of the upper part 9 of the piston 3 may have a visual alarm signaling.
De la même manière, la surface circulaire 17 de ladite portion 15 peut présenter une signalisation visuelle relative à une pression normale. A cet effet, il peut être prévu que la surface d'extrémité 16 soit peinte en rouge de manière à matérialiser la signalisation visuelle d'alarme et que la signalisation visuelle relative à une pression normale corresponde à une surface circulaire 17 peinte en verte.In the same way, the circular surface 17 of said portion 15 may have a visual signaling relating to a normal pressure. For this purpose, it can be provided that the end surface 16 is painted red so as to materialize the visual alarm signaling and that the visual signaling for a normal pressure corresponds to a circular surface 17 painted green.
Si ce code de couleur était appliqué au dispositif représenté dans les figures 2 et 3, il serait possible de visualiser, dans la figure 2, la signalisation visuelle d'alarme de couleur rouge au niveau de la surface d'extrémité 16 du piston 3 et, dans la figure 3, la signalisation visuelle relative à une pression normale verte au niveau de la surface circulaire 17 en saillie par rapport à la surface extérieure du couvercle de fermeture 14.If this color code were applied to the device shown in FIGS. 2 and 3, it would be possible to visualize, in FIG. 2, the red color visual warning signal at the end surface 16 of the piston 3 and in Figure 3, visual signage relating to green normal pressure at the circular surface 17 projecting from the outer surface of the closure lid 14.
Bien entendu, un autre code de couleurs ou un autre système de visualisation peuvent être utilisés. II est également possible, selon une autre variante de réalisation de l'invention non représentée aux dessins annexés, de pourvoir le dispositif d'un moyen lumineux et/ou sonore d'alarme, dont le déclenchement peut être réalisé mécaniquement par pression de la surface d'extrémité 16 du piston 3 sur un contact d'actionnement dudit moyen lumineux et/ou sonore d'alarme.Of course, another color code or other visualization system may be used. It is also possible, according to another embodiment of the invention not shown in the accompanying drawings, to provide the device with a light and / or audible alarm means, the triggering can be achieved mechanically by surface pressure end 16 of the piston 3 on an actuating contact of said light and / or alarm sound means.
Selon une caractéristique de l'invention, la chambre de pression 6 peut être reliée au circuit à tester par l'intermédiaire d'une vis creuse de pression 18.According to a characteristic of the invention, the pressure chamber 6 can be connected to the circuit to be tested by means of a hollow pressure screw 18.
En outre, le dispositif selon l'invention peut présenter un moyen de raccordement 19 à un dispositif de mise sous pression du circuit à tester, ledit moyen de raccordement 19 étant en communication avec la chambre de pression 6. Le dispositif de mise sous pression peut être utilisé, soit pour mettre la pression initiale dans le circuit avant de le tester, soit pour augmenter ou pour réduire la pression dans ledit circuit après avoir mesuré une pression non satisfaisante.In addition, the device according to the invention may have a connecting means 19 to a pressurizing device of the circuit to be tested, said connecting means 19 being in communication with the pressure chamber 6. The pressurizing device can be used, either to put the initial pressure in the circuit before testing it, or to increase or reduce the pressure in the circuit after measuring an unsatisfactory pressure.
Le dispositif 1 d'indication de la pression d'un circuit selon la présente invention présente donc l'avantage d'être facile à utiliser, il suffit en effet de le fixer par l'intermédiaire de la vis creuse de pression 18 sur le circuit à tester et à visualiser la portion de partie supérieure 9 du piston 3 pour savoir si la pression régnant dans ledit circuit est acceptable ou non. Le circuit à tester peut être, par exemple, un vérin hydraulique, un ressort à azote ou tout autre circuit sous pression de gaz ou de liquide.The device 1 for indicating the pressure of a circuit according to the present invention therefore has the advantage of being easy to use, it suffices to fix it by means of the hollow pressure screw 18 on the circuit to test and visualize the upper portion portion 9 of the piston 3 to know if the pressure in said circuit is acceptable or not. The circuit to be tested may be, for example, a hydraulic cylinder, a nitrogen spring or any other circuit under pressure of gas or liquid.
Le dispositif 1 selon l'invention est, en outre, de configuration simple, et donc peu coûteux à la fabrication. De plus, son utilisation est également peu coûteuse car il ne nécessite aucun apport d'énergie pour cette dernière.The device 1 according to the invention is, moreover, of simple configuration, and therefore inexpensive to manufacture. In addition, its use is also inexpensive because it requires no energy input for the latter.
Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté aux dessins annexés. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention. Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR2006/050421 WO2007128887A1 (en) | 2006-05-05 | 2006-05-05 | Device for indicating the pressure of a system |
| JP2007118054A JP2007298513A (en) | 2006-05-05 | 2007-04-27 | Circuit pressure display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR2006/050421 WO2007128887A1 (en) | 2006-05-05 | 2006-05-05 | Device for indicating the pressure of a system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007128887A1 true WO2007128887A1 (en) | 2007-11-15 |
Family
ID=37600756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2006/050421 Ceased WO2007128887A1 (en) | 2006-05-05 | 2006-05-05 | Device for indicating the pressure of a system |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007298513A (en) |
| WO (1) | WO2007128887A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1992931A3 (en) * | 2007-05-15 | 2010-12-01 | Dadco, Inc. | Pressure indicating device |
| LU91948B1 (en) * | 2012-03-01 | 2013-09-02 | Luxembourg Patent Co | Gas cylinder valve with visual pressure indicator |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2936054B1 (en) * | 2008-09-12 | 2016-09-30 | Messier Dowty Sa | PRESSURE AND CALIBRATION DETECTOR FOR SHOCK ABSORBER OR SIMILAR |
| KR200463571Y1 (en) | 2010-03-18 | 2012-11-20 | 한국훼스토 주식회사 | Pneumatic indicator |
| JP5612150B2 (en) | 2013-03-29 | 2014-10-22 | ファナック株式会社 | Articulated robot with gas spring and method for estimating internal pressure of gas spring |
| JP5628953B2 (en) | 2013-03-29 | 2014-11-19 | ファナック株式会社 | Articulated robot with gas spring and method for estimating internal pressure of gas spring |
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|---|---|---|---|---|
| US1345570A (en) * | 1919-05-19 | 1920-07-06 | Earl D White | Tire-pressure gage |
| US2948256A (en) * | 1957-09-16 | 1960-08-09 | Leonard L Tapp | Tire pressure indicator |
| US3203246A (en) * | 1962-04-13 | 1965-08-31 | Casco Products Corp | Blow-off valve and pressure indicator for fire extinguishers |
| DE1299533B (en) * | 1967-01-24 | 1969-07-17 | Draegerwerk Ag | Pressure indicator for breathing apparatus |
| DE1798107B1 (en) * | 1968-08-22 | 1971-04-22 | Samson Appbau Ag | DISPLAY DEVICE |
| DE2441380A1 (en) * | 1973-09-17 | 1975-08-07 | Standun | FLUID PRESSURE MONITORING DEVICE |
| EP0089411A1 (en) * | 1982-03-17 | 1983-09-28 | Drägerwerk Aktiengesellschaft | Pressure indicator for respiratory apparatuses |
| US5469978A (en) * | 1994-07-12 | 1995-11-28 | Keystone Railway Equipment Company, Inc. | Condition indicating system for railway car cushioning unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5594542U (en) * | 1978-12-04 | 1980-06-30 | ||
| JPS5857939U (en) * | 1981-10-15 | 1983-04-19 | 日本アキユムレ−タ株式会社 | Simple pressure detection device for pressure vessels |
| JPH0660859B2 (en) * | 1989-03-10 | 1994-08-10 | 日東工器株式会社 | Pressure checker |
| JP3265298B2 (en) * | 2000-02-21 | 2002-03-11 | 弘和産業株式会社 | Pressure measuring device |
| JP3561223B2 (en) * | 2000-09-20 | 2004-09-02 | パンチ工業株式会社 | Gas pressure measuring device for gas spring |
-
2006
- 2006-05-05 WO PCT/FR2006/050421 patent/WO2007128887A1/en not_active Ceased
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2007
- 2007-04-27 JP JP2007118054A patent/JP2007298513A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1345570A (en) * | 1919-05-19 | 1920-07-06 | Earl D White | Tire-pressure gage |
| US2948256A (en) * | 1957-09-16 | 1960-08-09 | Leonard L Tapp | Tire pressure indicator |
| US3203246A (en) * | 1962-04-13 | 1965-08-31 | Casco Products Corp | Blow-off valve and pressure indicator for fire extinguishers |
| DE1299533B (en) * | 1967-01-24 | 1969-07-17 | Draegerwerk Ag | Pressure indicator for breathing apparatus |
| DE1798107B1 (en) * | 1968-08-22 | 1971-04-22 | Samson Appbau Ag | DISPLAY DEVICE |
| DE2441380A1 (en) * | 1973-09-17 | 1975-08-07 | Standun | FLUID PRESSURE MONITORING DEVICE |
| EP0089411A1 (en) * | 1982-03-17 | 1983-09-28 | Drägerwerk Aktiengesellschaft | Pressure indicator for respiratory apparatuses |
| US5469978A (en) * | 1994-07-12 | 1995-11-28 | Keystone Railway Equipment Company, Inc. | Condition indicating system for railway car cushioning unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1992931A3 (en) * | 2007-05-15 | 2010-12-01 | Dadco, Inc. | Pressure indicating device |
| LU91948B1 (en) * | 2012-03-01 | 2013-09-02 | Luxembourg Patent Co | Gas cylinder valve with visual pressure indicator |
| WO2013127895A1 (en) * | 2012-03-01 | 2013-09-06 | Luxembourg Patent Company S.A. | Tap for a gas cylinder having a visual pressure indicator |
| US9631775B2 (en) | 2012-03-01 | 2017-04-25 | Luxembourg Patent Company S.A. | Tap for a gas cylinder having a visual pressure indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007298513A (en) | 2007-11-15 |
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