EP0077699B1 - Fully pneumatic generator for timed gas impulses - Google Patents

Fully pneumatic generator for timed gas impulses Download PDF

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Publication number
EP0077699B1
EP0077699B1 EP82401726A EP82401726A EP0077699B1 EP 0077699 B1 EP0077699 B1 EP 0077699B1 EP 82401726 A EP82401726 A EP 82401726A EP 82401726 A EP82401726 A EP 82401726A EP 0077699 B1 EP0077699 B1 EP 0077699B1
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Prior art keywords
gas
timer
supplied
controlled
cell
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Expired
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EP82401726A
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German (de)
French (fr)
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EP0077699A1 (en
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Pierre Cognard
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/22—Oscillators

Definitions

  • the invention relates to a fully pneumatic device, generator of timed gas pulses.
  • electro-pneumatic or electronic devices to carry out repetitive operations for dosing liquid or pasty products such as glues, resins, oils, greases, solvents, various reagents, or even pastes for solder or solder. These products must generally be delivered in a determined quantity from a tank.
  • applicators are used which, by means of a lever or a control pedal, ensure the metering while allowing the operator to have his hands free.
  • These devices generally use electricity. For certain specific situations, it may be necessary to avoid the use of electricity, as a safety measure.
  • the subject of the invention is a fully pneumatic device, generator of timed gas pulses, supplied by a gas source at a determined pressure, of the type comprising a regulator supplied with gas from the gas source, preset to an adequate value. and delivering a gas flow rate via a leakage pipe capable of being closed off by an operable control member, characterized in that it comprises: an amplifier relay supplied with gas from the gas source and controlled by the pressure of the gas coming from the regulator in the leakage pipe; an adjustable duration timer controlled by the amplifier relay; and a three-way cell controlled by the timer, supplied with gas from the gas source, and capable of delivering gas pulses whose duration is determined by the timer.
  • the pneumatic device according to the invention is supplied with gas under pressure by an external source 14.
  • a filter 1 to 5 or 20 microns for example, with incorporated regulator, delivers a fixed pressure comprised by example between 4 and 7 bar.
  • a miniature on-off valve 2 makes it possible to activate or deactivate the entire device.
  • the output of the filter 1 supplies a regulator 4 and a pressure gauge 5.
  • the regulator 4 is adjustable in the following ranges of values, for example: 0 to 1.3 bar, 0.1 to 4.5 bar, or 0 , 1 to 8 bar, depending on the desired applications.
  • a miniature pressure regulator 6 is preset to an adequate value allowing correct operation on the one hand of an amplifier relay 7 and on the other hand of a vacuum generator 9 via a miniature flow regulator 10.
  • the vacuum generator 9 operates correctly even under 0.5 bar.
  • the regulator 6 permanently supplies a leakage pipe 16, including a bypass piloting the amplifier relay 7, supplied by the valve 2.
  • This relay has a response time of 10 ms, and it supplies a pneumatic timer 3 delivering durations of 0 0.05 s over several minutes, gradually continuously, with good linearity up to several seconds.
  • Timer 3 controls a memory cell 3 with 3 channels, which is supplied with pressure by the regulator 4 and with depression by the depression generator 9. This cell delivers a signal usable at 15, that is to say either pressure, or depression. Furthermore, the timer 3 controls a pressure indicator 11, of the optical index type, having a response time of approximately 10 ms. On the leakage pipe 16, a cell 13 can be provided, controlled by the timer 3, and which ensures that the leakage pipe is shut off for the entire duration of the timeout imposed in 3, from a shutter fugitive from the leak line 16.
  • the leakage pipe 16 is closed at 12 by a maneuverable control, that is to say for example by a manual control, by a pedal, by a proximity sensor or by any other equivalent means.
  • the outlet of the vacuum generator 9 is directly connected to the outlet 15 for use of the cell 8.
  • the depression prevents dripping.
  • the timer 3 is provided with a maneuverable tachometer to display the desired duration of the gas pressure signal intended for controlling the cell 8.
  • the amplifier relay 7 applies to timer 3 the output pressure of the filter 1.
  • Timer 3 transmits this pressure to the optical pressure indicator 11 and to cell 8 for the preset duration displayed by the tachometer.
  • the cell 8 then switches to the active position and delivers at the outlet 15 the pressure established by the regulator 4 to control the application of the product.
  • the cell 8 switches back to its rest position, applying again to the output 15 the vacuum coming from the generator 9.
  • the device is brought back to the initial state and can again be put into operation.
  • the response time of the entire device is calculated in milliseconds; it is therefore of the same order of magnitude as that of a solenoid valve.
  • the device object of the invention is intended to deliver pulses of air or neutral gas such as nitrogen for example.
  • pulses of duration adjustable by the timer 3 act on a product dispenser constituted by syringes of various capacities, from 1 to 35 cm 3 for example, by cartridges from 75 to 360 cm 3 for example, or by tanks in metal or plastic.
  • the pulses can also be used for controlling pneumatic product valves, of the valve or diaphragm type for example. They can also, more generally, control any pneumatic system for a predetermined and repetitive time.
  • the device according to the invention has the qualities of existing devices using electronics. Since it does not use electric current, this device can be used in explosive atmospheres safely.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Magnetically Actuated Valves (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Vacuum Packaging (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Organic Insulating Materials (AREA)

Abstract

1. Completely pneumatic apparatus generating timed gas pulses and supplied by a source (14) of gas under specific pressure, of the type comprising a reducing valve (6) supplied with gas from the gas source (14), preset to a suitable value and delivering a flow of gas through a leakage conduit capable of being closed by an operable regulating element, characterized in that it comprises : an amplifier relay (7), supplied with gas from the gas source (14) and controlled by the pressure of gas issuing from the reducing valve (6) in the leakage conduit (16) ; an adjustable-duration timer (3) controlled by the amplifier relay (7) ; and a three-way cell (8) controlled by the timer (3) and supplied with gas from the gas source (14) and capable of delivering gas pulses the duration of which is determined by the timer (3).

Description

L'invention concerne un dispositif entièrement pneumatique, générateur d'impulsions temporisées de gaz.The invention relates to a fully pneumatic device, generator of timed gas pulses.

Il est connu d'utiliser des appareils électro- pneumatiques ou électroniques pour assurer des opérations répétitives de dosage de produits liquides ou pâteux comme les colles, les résines, les huiles, les graisses, les solvants, les réactifs divers, ou même les pâtes à souder ou à braser. Ces produits doivent en général être délivrés en quantité déterminée à partir d'un réservoir. A cet effet, on utilise des applicateurs qui, au moyen d'un levier ou d'une pédale de commande, assurent le dosage tout en permettant à l'opérateur d'avoir les mains libres. Ces appareils font en général appel à l'électricité. Pour certaines situations particulières, on peut être amené à éviter l'utilisation de l'électricité, par mesure de sécurité.It is known to use electro-pneumatic or electronic devices to carry out repetitive operations for dosing liquid or pasty products such as glues, resins, oils, greases, solvents, various reagents, or even pastes for solder or solder. These products must generally be delivered in a determined quantity from a tank. To this end, applicators are used which, by means of a lever or a control pedal, ensure the metering while allowing the operator to have his hands free. These devices generally use electricity. For certain specific situations, it may be necessary to avoid the use of electricity, as a safety measure.

C'est l'un des buts de l'invention de prévoir un dispositif entièrement pneumatique pour fournir des impulsions de gaz de durée réglable et reproductible, susceptibles de commander tout le système pneumatique pendant un temps prédéterminé et répétitif.It is one of the objects of the invention to provide a fully pneumatic device for supplying gas pulses of adjustable and reproducible duration, capable of controlling the entire pneumatic system for a predetermined and repetitive time.

L'invention a pour objet un dispositif entièrement pneumatique, générateur d'impulsions temporisées de gaz, alimenté par une source de gaz à pression déterminée, du type comprenant un détendeur alimenté en gaz à partir de la source de gaz, préréglé sur une valeur adéquate et délivrant un débit de gaz par l'intermédiaire d'une canalisation de fuite susceptible d'être obturée par un organe de commande manoeuvrable, caractérisé en ce qu'il comporte: un relais amplificateur alimenté en gaz à partir de la source de gaz et piloté par la pression du gaz issue du détendeur dans la canalisation de fuite; un temporisateur à durée réglable piloté par le relais amplificateur; et une cellule à trois voies pilotée par le temporisateur, alimentée en gaz à partir de la source de gaz, et sesceptible de délivrer des impulsions de gaz dont la durée est déterminée par le temporisateur.The subject of the invention is a fully pneumatic device, generator of timed gas pulses, supplied by a gas source at a determined pressure, of the type comprising a regulator supplied with gas from the gas source, preset to an adequate value. and delivering a gas flow rate via a leakage pipe capable of being closed off by an operable control member, characterized in that it comprises: an amplifier relay supplied with gas from the gas source and controlled by the pressure of the gas coming from the regulator in the leakage pipe; an adjustable duration timer controlled by the amplifier relay; and a three-way cell controlled by the timer, supplied with gas from the gas source, and capable of delivering gas pulses whose duration is determined by the timer.

Selon d'autres caractéristiques de l'invention:

  • - Un indicateur optique de pression est prévu en aval du temporisateur pour visualiser l'impulsion de gaz de pilotage de la cellule à trois voies.
  • - Un générateur de vide est prévu pour délivrer une dépression par la cellule à trois voies, en dehors des périodes où l'impulsion de gaz de pilotage est appliquée à ladite cellule.
  • - Une cellule, pilotée par le temporisateur, est prévue sur la canalisation de fuite en aval du relais amplificateur, pour assurer le pilotage de ce dernier sur commande d'une obturation fugitive de la canalisation de fuite.
According to other characteristics of the invention:
  • - An optical pressure indicator is provided downstream of the timer to display the pilot gas pulse from the three-way cell.
  • - A vacuum generator is provided to deliver a vacuum through the three-way cell, outside the periods when the pilot gas pulse is applied to said cell.
  • - A cell, controlled by the timer, is provided on the leakage pipe downstream of the amplifier relay, to control the latter on command of a fugitive closure of the leakage pipe.

D'autres caractéristiques ressortent de la description qui suit, faite avec référence au dessin annexé sur lequel on peut voir:

  • Fig. 1, un schéma symbolique simplifié d'un exemple de réalisation d'un dispositif entièrement pneumatique générateur d'impulsions temporisées de gaz;
  • Fig. 2, une vue en coupe longitudinale d'un exemple de réalisation de la canalisation de fuite du dispositif de la fig. 1.
Other characteristics appear from the following description, made with reference to the attached drawing on which we can see:
  • Fig. 1, a simplified symbolic diagram of an embodiment of a fully pneumatic device generating timed gas pulses;
  • Fig. 2, a view in longitudinal section of an exemplary embodiment of the leakage pipe of the device of FIG. 1.

En se reportant au dessin, on peut voir que le dispositif pneumatique selon l'invention est alimenté en gaz sous pression par une source extérieure 14. Un filtre 1 à 5 ou 20 microns par exemple, à régulateur incorporé, délivre une pression fixe comprise par exemple entre 4 et 7 bar. A la sortie du filtre 1, une valve miniature 2 de marche-arrêt permet de mettre en service ou hors service l'ensemble du dispositif. Par ailleurs, la sortie du filtre 1 alimente un détendeur 4 et un manomètre 5. Le détendeur 4 est réglable dans les gammes de valeurs suivantes, par exemple: 0 à 1,3 bar, 0,1 à 4,5 bar, ou 0,1 à 8 bar, suivant les applications désirées.Referring to the drawing, it can be seen that the pneumatic device according to the invention is supplied with gas under pressure by an external source 14. A filter 1 to 5 or 20 microns for example, with incorporated regulator, delivers a fixed pressure comprised by example between 4 and 7 bar. At the outlet of the filter 1, a miniature on-off valve 2 makes it possible to activate or deactivate the entire device. Furthermore, the output of the filter 1 supplies a regulator 4 and a pressure gauge 5. The regulator 4 is adjustable in the following ranges of values, for example: 0 to 1.3 bar, 0.1 to 4.5 bar, or 0 , 1 to 8 bar, depending on the desired applications.

Un détendeur miniature 6 est préréglé sur une valeur adéquate permettant un bon fonctionnement d'une part d'un relais amplificateur 7 et d'autre part d'un générateur de dépression 9 par l'intermédiaire d'un régulateur de débit 10 miniature. Le générateur de dépression 9 fonctionne correctement même sous 0,5 bar.A miniature pressure regulator 6 is preset to an adequate value allowing correct operation on the one hand of an amplifier relay 7 and on the other hand of a vacuum generator 9 via a miniature flow regulator 10. The vacuum generator 9 operates correctly even under 0.5 bar.

Le détendeur 6 alimente en permanence une canalisation de fuite 16, dont une dérivation pilote le relais amplificateur 7, alimenté par la valve 2. Ce relais a un temps de réponse de 10 ms, et il alimente un temporisateur 3 pneumatique délivrant des durées de 0,05 s à plusieurs minutes, de façon progressivement continue, avec une bonne linéarité jusqu'à plusieurs secondes.The regulator 6 permanently supplies a leakage pipe 16, including a bypass piloting the amplifier relay 7, supplied by the valve 2. This relay has a response time of 10 ms, and it supplies a pneumatic timer 3 delivering durations of 0 0.05 s over several minutes, gradually continuously, with good linearity up to several seconds.

Le temporisateur 3 pilote une cellule 8 à 3 voies, à mémoire, qui est alimentée en pression par le détendeur 4 et en dépression par le générateur de dépression 9. Cette cellule délivre un signal utilisable en 15, c'est-à-dire soit une pression, soit une dépression. Par ailleurs, le temporisateur 3 commande un indicateur de pression 11, du type à index optique, ayant un temps de réponse de 10 ms environ. Sur la canalisation de fuite 16, on peut prévoir une cellule 13 pilotée par le temporisateur 3, et qui assure un maintien de l'obturation de la canalisation de fuite pendant toute la durée de la temporisation imposée en 3, à partir d'une obturation fugitive de la canalisation de fuite 16.Timer 3 controls a memory cell 3 with 3 channels, which is supplied with pressure by the regulator 4 and with depression by the depression generator 9. This cell delivers a signal usable at 15, that is to say either pressure, or depression. Furthermore, the timer 3 controls a pressure indicator 11, of the optical index type, having a response time of approximately 10 ms. On the leakage pipe 16, a cell 13 can be provided, controlled by the timer 3, and which ensures that the leakage pipe is shut off for the entire duration of the timeout imposed in 3, from a shutter fugitive from the leak line 16.

L'obturation de la canalisation de fuite 16 est assurée en 12 par une commande manoeuvrable, c'est-à-dire par exemple par une commande manuelle, par une pédale, par un capteur de proximité ou par tout autre moyen équivalent.The leakage pipe 16 is closed at 12 by a maneuverable control, that is to say for example by a manual control, by a pedal, by a proximity sensor or by any other equivalent means.

Lorsque la valve 2 est en position de marche, et la canalisation de fuite ouverte, la sortie du générateur 9 de dépression est directement reliée à la sortie 15 d'utilisation de la cellule 8. Ainsi, lorsque le dispositif est utilisé pour commander un applicateur de produit liquide, et que ce produit est placé dans un distributeur du type seringue, cartouche ou réservoir, la dépression empêche le gouttage.When the valve 2 is in the operating position, and the leakage pipe open, the outlet of the vacuum generator 9 is directly connected to the outlet 15 for use of the cell 8. Thus, when the device is used to control an applicator of liquid product, and that this product is placed in a dispenser of the syringe, cartridge or reservoir type, the depression prevents dripping.

Le temporisateur 3 est muni d'un compte-tours manoeuvrable pour afficher la durée désirée du signal de pression gazeuse destiné au pilotage de la cellule 8. Lorsque la canalisation de fuite 16 est obturée pendant un temps au moins égal à la durée affichée par le temporisateur 3 (en l'absence de la cellule 13), le relais amplificateur 7 applique au temporisateur 3 la pression de sortie du filtre 1. Le temporisateur 3 transmet cette pression à l'indicateur optique de pression 11 et à la cellule 8 pendant la durée préréglée affichée par le compte-tours. La cellule 8 bascule alors en position active et délivre à la sortie 15 la pression établie par le détendeur4 pour commander l'application du produit. A la fin du temps affiché sur le temporisateur 3, celui-ci revient à son état initial automatiquement, et la cellule 8 rebascule à sa position de repos, appliquant de nouveau à la sortie 15 la dépression en provenance du générateur 9.The timer 3 is provided with a maneuverable tachometer to display the desired duration of the gas pressure signal intended for controlling the cell 8. When the leakage pipe 16 is closed for a time at least equal to the duration displayed by the timer 3 (in the absence of cell 13), the amplifier relay 7 applies to timer 3 the output pressure of the filter 1. Timer 3 transmits this pressure to the optical pressure indicator 11 and to cell 8 for the preset duration displayed by the tachometer. The cell 8 then switches to the active position and delivers at the outlet 15 the pressure established by the regulator 4 to control the application of the product. At the end of the time displayed on the timer 3, it returns to its initial state automatically, and the cell 8 switches back to its rest position, applying again to the output 15 the vacuum coming from the generator 9.

Si alors on libère la canalisation de fuite 16, le dispositif est ramené à l'état initial et peut de nouveau être mis en fonctionnement.If then the leakage pipe 16 is released, the device is brought back to the initial state and can again be put into operation.

Dans le cas où la cellule 13 est en place sur la canalisation de fuite 16, le fonctionnement est identique dans l'ensemble. Cependant, une obturation fugitive de la canalisation de fuite 16 provoque comme précédemment le déclenchement du temporisateur 3, et celui-ci pilote la cellule 13 qui bloque l'obturation de la canalisation de fuite 16 pendant toute la durée définie par le temporisateur 3. Il est alors possible de libérer la canalisation de fuite 16 à la suite d'une simple obturation fugitive.In the case where the cell 13 is in place on the leakage pipe 16, the operation is identical overall. However, a fugitive closure of the leakage pipe 16 causes, as before, the triggering of the timer 3, and the latter controls the cell 13 which blocks the closing of the leakage pipe 16 for the entire duration defined by the timer 3. It it is then possible to release the leakage pipe 16 following a simple fugitive closure.

Le temps de réponse de l'ensemble du dispositif se chiffre en millisecondes; il est donc du même ordre de grandeur que celui d'une électrovanne.The response time of the entire device is calculated in milliseconds; it is therefore of the same order of magnitude as that of a solenoid valve.

Pour éviter les commandes intempestives ou erronées du relais amplificateur 7, la canalisation de fuite 16 est équipée comme représenté sur la fig. 2. La canalisation 16 est munie d'un obturateur 18 en amont de la dérivation vers le relais amplificateur 7. Dans cet obturateur 18 est ménagé un passage axial par exemple pour un tube capillaire 17 qui s'étend sensiblement au-delà de la dérivation vers le relais amplificateur 7. Cette disposition présente plusieurs avantages parmi lesquels on peut noter:

  • - le débit de fuite du gaz est limité par le diamètre du tube capillaire 17, ce qui entraîne une consommation minime de gaz, de l'ordre de 3 I/min si l'on n'utilise pas la fonction générateur de dépression,
  • - en cas de choc sur la canalisation 16, il n'en résulte pas une commande intempestive du relais amplificateur 7, d'où une plus grande protection contre les déclenchements parasites.
To avoid inadvertent or erroneous commands from the amplifier relay 7, the leakage pipe 16 is equipped as shown in FIG. 2. The pipe 16 is provided with a shutter 18 upstream of the bypass towards the amplifier relay 7. In this shutter 18 is provided an axial passage for example for a capillary tube 17 which extends substantially beyond the bypass to amplifier relay 7. This arrangement has several advantages, among which we can note:
  • the gas leakage rate is limited by the diameter of the capillary tube 17, which results in minimal gas consumption, of the order of 3 I / min if the vacuum generator function is not used,
  • - In the event of an impact on the pipe 16, this does not result in an untimely command of the amplifier relay 7, hence greater protection against parasitic tripping.

Le dispositif objet de l'invention est destiné à délivrer des impulsions d'air ou de gaz neutre tel que l'azote par exemple. Ces impulsions de durée réglable par le temporisateur 3 agissent sur un distributeur de produits constitué par des seringues de diverses capacités, de 1 à 35 cm3 par exemple, par des cartouches de 75 à 360 cm3 par exemple, ou encore par des réservoirs en métal ou en matière plastique.The device object of the invention is intended to deliver pulses of air or neutral gas such as nitrogen for example. These pulses of duration adjustable by the timer 3 act on a product dispenser constituted by syringes of various capacities, from 1 to 35 cm 3 for example, by cartridges from 75 to 360 cm 3 for example, or by tanks in metal or plastic.

Les impulsions peuvent également être utilisées pour la commande de valves pneumatiques à produit, de type clapet ou diaphragme par exemple. Elles peuvent aussi, de façon plus générale, commander tout système pneumatique pendant un temps prédéterminé et répétitif.The pulses can also be used for controlling pneumatic product valves, of the valve or diaphragm type for example. They can also, more generally, control any pneumatic system for a predetermined and repetitive time.

En raison de son faible encombrement, de sa très faible consommation de gaz, de son temps de réponse très court, le dispositif selon l'invention présente les qualités des dispositifs existants utilisant l'électronique. Du fait qu'il n'utilise pas de courant électrique, ce dispositif peut être utilisé dans les atmosphères explosives en toute sécurité.Because of its small size, its very low gas consumption, its very short response time, the device according to the invention has the qualities of existing devices using electronics. Since it does not use electric current, this device can be used in explosive atmospheres safely.

Claims (6)

1. Completely pneumatic apparatus generating timed gas pulses and supplied by a source (14) of gas under specific pressure, of the type comprising a reducing valve (6) supplied with gas from the gas source (14), preset to a suitable value and delivering a flow of gas through a leakage conduit capable of being closed by an operable regulating element, characterized in that it comprises: an amplifier relay (7), supplied with gas from the gas source (14) and controlled by the pressure of gas issuing from the reducing valve (6) in the leakage conduit (16); an adjustable-duration timer (3) controlled by the amplifier relay (7); and a three-way cell (8) controlled by the timer (3) and supplied with gas from the gas source (14) and capable of delivering gas pulses the duration of which is determined by the timer (3).
2. Apparatus according to claim 1, characterized in that an optical pressure indicator (11) is arranged downstream of the timer (3) for showing visually the control gas pulse of the three-way cell (8).
3. Apparatus according to claim 1, characterized in that a vacuum generator (9) is provided for delivering a negative pressure to the three-way cell (8) outside of periods wherein the control gas pulse is applied to the said cell (8).
4. Apparatus according to claim 1, characterized in that a cell (13) controlled by the timer (3) is arranged on the leakage conduit (16) downstream of the amplifier relay (7) for effecting the control of the latter on instructions of a transitory closing of the leakage conduit (16).
5. Apparatus according to claim 1, characterized in that the leakage conduit (16) is provided upstream of its branch to the amplifier relay (3) with a closure member (18) through which is taken a capillary tube (17) extending beyond the said branch.
EP82401726A 1981-09-23 1982-09-23 Fully pneumatic generator for timed gas impulses Expired EP0077699B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401726T ATE14917T1 (en) 1981-09-23 1982-09-23 FULLY PNEUMATIC GENERATOR FOR TIMED GAS PULSE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8117919A FR2513327A1 (en) 1981-09-23 1981-09-23 COMPLETELY PNEUMATIC DEVICE, GENERATOR OF TIMED GAS PULSES
FR8117919 1981-09-23

Publications (2)

Publication Number Publication Date
EP0077699A1 EP0077699A1 (en) 1983-04-27
EP0077699B1 true EP0077699B1 (en) 1985-08-14

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EP82401726A Expired EP0077699B1 (en) 1981-09-23 1982-09-23 Fully pneumatic generator for timed gas impulses

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EP (1) EP0077699B1 (en)
AT (1) ATE14917T1 (en)
DE (1) DE3265436D1 (en)
FR (1) FR2513327A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2528129A1 (en) * 1982-06-04 1983-12-09 Cognard Pierre ELECTRO-PNEUMATIC DEVICE, GENERATOR OF TIMED PULSES OF GAS
CN114893138B (en) * 2022-05-10 2023-11-17 佰思迪(天津)科技有限公司 Pulse type negative pressure adsorption equipment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433617A (en) * 1965-02-26 1966-04-01 Inst Werkzeugmaschinen Device for non-contact control for generating pneumatic pulses
DE2504698A1 (en) * 1975-02-05 1976-08-19 Kuhnke Gmbh Kg H Abrupt impulse pneumatic generator - has valve member under influence of control chamber under influence of control chamber vented by input pressure

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Publication number Publication date
ATE14917T1 (en) 1985-08-15
FR2513327A1 (en) 1983-03-25
DE3265436D1 (en) 1985-09-19
FR2513327B1 (en) 1985-04-19
EP0077699A1 (en) 1983-04-27

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