EP0236208A1 - Breathing apparatus for compressed air for diving - Google Patents

Breathing apparatus for compressed air for diving Download PDF

Info

Publication number
EP0236208A1
EP0236208A1 EP87400348A EP87400348A EP0236208A1 EP 0236208 A1 EP0236208 A1 EP 0236208A1 EP 87400348 A EP87400348 A EP 87400348A EP 87400348 A EP87400348 A EP 87400348A EP 0236208 A1 EP0236208 A1 EP 0236208A1
Authority
EP
European Patent Office
Prior art keywords
tongue
breathing apparatus
conduit
mouthpiece
compressed air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87400348A
Other languages
German (de)
French (fr)
Other versions
EP0236208B1 (en
Inventor
Bernard Chambonnet
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.)
La Spirotechnique Industrielle et Commerciale
Original Assignee
La Spirotechnique Industrielle et Commerciale
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 La Spirotechnique Industrielle et Commerciale filed Critical La Spirotechnique Industrielle et Commerciale
Publication of EP0236208A1 publication Critical patent/EP0236208A1/en
Application granted granted Critical
Publication of EP0236208B1 publication Critical patent/EP0236208B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/02—Valves
    • A62B9/022—Breathing demand regulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/18—Air supply
    • B63C11/22—Air supply carried by diver
    • B63C11/2227—Second-stage regulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface

Definitions

  • the present invention relates to compressed air breathing apparatus, in particular for scuba diving, comprising means for supplying compressed air opening into a compressed air expansion chamber by means of a valve of which opening and closing are controlled by means sensitive to the inspiratory effort of the user, and a mouthpiece comprising a conduit which puts the expansion chamber in communication with the mouth of the user.
  • Modern compressed air breathing apparatuses are generally of the two-stage type of relaxation.
  • the compressed air of the bottles carried by the plunger is expanded for the first time from a high pressure (approximately 200 bars) to a so-called intermediate pressure (approximately 9 bars) by a pressure reducer fixed to said bottles.
  • This air at intermediate pressure is brought by a hose to a second stage which is connected to the mouth of the plunger by a mouthpiece.
  • the air is expanded from the intermediate pressure to the ambient pressure, by a mechanism actuated by the depression caused by a demand for air on the part of the plunger.
  • a second stage regulator will generally be considered to be all the more pleasant for the user and efficient as the vacuum required to obtain a given flow will be low.
  • this type of equipment must be able to meet the requirements of different types of users.
  • the users are professional divers, in particular when they are divers working underwater and making physical efforts, it is desirable that they make a minimum inspiratory effort to trigger the arrival of air from breathing. For this, it is necessary that the opening of the valve takes place under a minimum vacuum.
  • this material is used in scuba diving schools, it is necessary on the contrary that the valve opens under increased depression, that is to say a significant inspiratory effort, in order to avoid assistance too strong of said users.
  • the air flow is more or less important, increasing with the depth at which the plunger is located.
  • the apparatus makes it possible to solve the various problems set out above.
  • the duct of the mouthpiece comprises means forming an obstacle to the free circulation of air from the expansion chamber towards the mouth of the user, said means having a shape such that the vacuum required to open the valve is between - 6 millibars and + 6 millibars for a flow rate of 400 liters / min.
  • the obstacle-forming means will be adjustable so as to create a more or less significant inspiratory force depending on the position of said means.
  • said obstacle-forming means will be constituted by a tongue separating the duct into a first and second sub-ducts.
  • the end of the tab located on the side of the expansion chamber will be projecting into said chamber so as to create a pressure drop in the flow of compressed gas coming from the chamber towards the conduit.
  • the valve preferably consisting of a movable valve on its seat placed at the end of the duct, will be surrounded by a cylindrical housing pierced with an opening through which the gas escapes. coming from the conduit, this opening being oriented towards the projecting end of the tongue. This opening will preferably be placed near said conduit.
  • the device will include means for adjusting the movement of the tongue parallel to itself in the conduit.
  • the tongue will be movable about an axis located in its plane and substantially parallel to the end plane of the mouthpiece, said tongue comprising control means placed outside of the mouthpiece to control the rotation of the latter in the conduit.
  • FIG. 1 a schematic sectional view of the apparatus according to the invention.
  • the device comprises a hose 1 for supplying compressed air to the device according to the invention, commonly known as the second stage for expanding the compressed breathing air.
  • This device comprises a compressed gas inlet pipe 6, the end 70 of which forms the seat of a valve 7 of the valve for the passage of compressed air arriving at medium pressure in the expansion chamber 15 of this second stage.
  • This valve 7 is integral with a square plate 71 placed in a cylindrical housing 13. In this way, it clears passages 9 and 72 between the sides of the plate 71 and the housing 13, allowing communication between the space 8 located around the end of the gas supply pipe 6 and the space 11 located inside the cylindrical chamber 13.
  • the latter ends with an upper end 73 on which a return spring 10 comes to bear which pushes back the plate 71 and the valve 7 on its seat 70.
  • the plate 71 is secured to an axis 2 passing through the upper cap 73 of the cylindrical housing 13 and secured to a lever 3 whose end 14 comes into contact with the membrane 4.
  • This is fixed above the expansion chamber 15, by its peripheral end 18 forming a seal, thus separating said chamber 15 from an upper space 74 in which the ambient fluid is found (that is ie water when diving).
  • This space 74 is delimited by a cover 75 placed above the chamber 15, in the center of which is located a push button 16 returned to the position illustrated in the figure by a return spring 17.
  • This push button allows the vacuum device to operate manner known per se by action of the lever 76 on the membrane 4 and the lever 3 which controls the opening of the valve.
  • the cylindrical housing 13 comprises in the vicinity of its cover 73, an opening 12 whose axis 20 is oriented substantially in the direction of the conduit 21 (see Figure 2).
  • the expansion chamber 15 has a vertical cylindrical wall 19 on which the air coming from the opening 12 comes to bear in the direction of the axis 20, this wall 19 leading the compressed air to the duct 21. This this comprises in FIGS. 1 and 2 a tongue 5 disposed substantially in the middle of said conduit 21.
  • the valve 7 separates from its seat 70, which allows the passage of compressed air from the conduit 6 via the chamber 8, the passages 9-72, the housing 11, this compressed air being ejected through the opening 12 in the direction of the conduit 21, and thereby filling the chamber 15.
  • the pressure in the chamber 15 becomes equal pressure in the housing 74, which brings the membrane 4 back into its po stable equilibrium position, position in which the lever 3 controls the closing of the valve 7 on its seat 70.
  • FIG. 3 more specifically explains the role and function of the tongue 5 in the duct 21.
  • This tongue 5 has a first part 34 located on the side of the expansion chamber 15, the upper end 37 of this tongue 5, delimited by the extension of the lower wall 29 of the expansion chamber 15, thus projecting, from a height l0 inside said expansion chamber 15.
  • the first rectangular part 34 of the tongue 5, of width l1 is extended by a second part 35 of also substantially rectangular shape, of width l2 greater than l1.
  • the junctions of the first and second parts 34 and 35 of the tongue 5 thus determine stops 301 and 310, coming into contact with shoulders 30 and 31, located at the bottom of the adjustment grooves 38 and 39 ( Figure 4).
  • the second part 35 of the tongue 5 ends in a widening delimited by rounded parts 32 and 33 coming into contact with the walls of the mouthpiece 22.
  • the edge 76 of the tongue 5 which is flush with the outside of the mouthpiece buccal 22 thus has a width l3 greater than l2.
  • FIG 4 which is a sectional view along BB of the apparatus of Figure 3, is illustrated the setting and the function of the tongue 5.
  • the conduit 21 is delimited by an outer wall 77 in which is placed a wall adjacent 78.
  • Each of these grooves has a position marked by the marks L1 at L10.
  • the tongue 5 can thus be moved in any of the ten positions L1 ... L10. Whatever the position, this delimits two sub-conduits 60 and 61 of the conduit 21.
  • the position L1 of the blade is the position corresponding in FIG. 2 to the lamella 5 located near the orifice 12 (position la more to the left in Figure 2).
  • Figure 8 shows the results obtained with an apparatus as defined in the previous figures.
  • the illustrated curves of the flow rate in l / min of compressed air as a function of the vacuum created by the user, show that the device in the example produced has no influence until a flow rate of the order of 200 l / min (for inspiration at atmospheric pressure).
  • a flow rate of the order of 200 l / min for inspiration at atmospheric pressure.
  • the position of the tongue in the duct 21 By cons, beyond 200 l / min as shown in this figure, we see the influence of the position of the tongue in the duct 21.
  • the tongue is in position L1 (the left most in the figure 2), the inspiratory effort increases when the flow increases.
  • the depression is of the order of 7 millibars for a flow rate of 400 l / min, which means a fairly significant effort on inspiration as the diver descends.
  • FIG. 5 shows alternative embodiments of the tongue shown in the previous figures.
  • provision is made for a displacement of the tongue parallel to itself in the conduit 21.
  • said tongue 5 is secured to an endless screw 51 comprising at its right end in the figure a button for operation 50.
  • This is located outside the mouthpiece, placed so as not to hinder the plunger when the mouthpiece is placed in the mouth thereof.
  • the plunger can thus by turning the button 50 in the desired direction move the tongue 5 in one direction or the other and thus increase or decrease the vacuum.
  • FIG. 6 represents a variant of FIG. 5 in which the tongue 5 is integral with an axis 54 which can move in translation through the mouthpiece 22, thanks to two operating tails 52 and 53 placed on either side 'other of this axis 54.
  • a number of points of stable equilibrium are provided: notches, hard points, etc.
  • the tongue 5 as in the embodiment of FIGS. 1 to 4, can be placed in projection in the vacuum chamber 15, with the advantages which result from it in terms of the pressure drop generated by the projecting end of said tongue 5.
  • FIG. 7 represents an alternative embodiment of the invention in which the movement of the tongue is ensured by rotation along an axis 80 defined in accordance with claim 14.
  • the rotation control is effected via the axis 56 , the control button 55 and a gear system known per se 57.
  • a certain number of stable positions of the tongue will be used, such as 58 (notches, hard points, etc.).
  • This variant does not however have the advantage of the previous ones because generally given the dimensions and the shape of the conduit 21 (see in particular FIG. 4), the tongue cannot be projecting into the chamber 15.
  • the displacement of a few degrees causes a very large pressure drop, which makes this variant more difficult to use.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

Appareil respiratoire à air comprimé, en particulier pour la plongée sous-marine, comportant des moyens d'amenée d'air comprimé (1) débouchant dans une chambre de détente (15) de l'air comprimé, par l'intermédiaire d'une vanne (6, 7, 2, 10, 13, 3, 14) dont l'ouverture et la fermeture sont commandées par des moyens (4) sensibles à l'effort inspiratoire de l'utilisateur, et un embout buccal (22) comportant un conduit (21) qui met en communication la chambre de détente (15) avec la bouche de l'utilisateur. Selon l'invention, le conduit (21) de l'embout buccal (22) comporte des moyens (5) formant obstacle à la libre circulation de l'air de la chambre de détente (15) vers la bouche de l'utilisateur, lesdits moyens (5) ayant une forme telle que la dépression nécessaire à l'ouverture de la vanne est comprise entre - 6 mbar et + 6 mbar pour un débit de 400 litres/mn.Compressed air breathing apparatus, in particular for scuba diving, comprising compressed air supply means (1) opening into a pressure reduction chamber (15) via a valve (6, 7, 2, 10, 13, 3, 14) whose opening and closing are controlled by means (4) sensitive to the inspiratory effort of the user, and a mouthpiece (22) comprising a conduit (21) which communicates the expansion chamber (15) with the mouth of the user. According to the invention, the conduit (21) of the mouthpiece (22) comprises means (5) forming an obstacle to the free circulation of air from the expansion chamber (15) towards the mouth of the user, said means (5) having a shape such that the vacuum required to open the valve is between - 6 mbar and + 6 mbar for a flow rate of 400 liters / min.

Description

La présente invention concerne l'appareil respiratoire à air comprimé, en particulier pour la plongée sous-marine, comportant des moyens d'amenée d'air comprimé débouchant dans une chambre de détente d'air comprimé par l'intermédiaire d'une vanne dont l'ouverture et la fermeture sont commandées par des moyens sensibles à l'effort inspiratoire de l'utilisateur, et un embout buccal comportant un conduit qui met en communication la chambre de détente avec la bouche de l'utilisateur.The present invention relates to compressed air breathing apparatus, in particular for scuba diving, comprising means for supplying compressed air opening into a compressed air expansion chamber by means of a valve of which opening and closing are controlled by means sensitive to the inspiratory effort of the user, and a mouthpiece comprising a conduit which puts the expansion chamber in communication with the mouth of the user.

Les appareils respiratoires modernes à air comprimé sont généralement du type à deux étages de détente. L'air comprimé des bouteilles portées par le plongeur est détendu une première fois d'une haute pression (environ 200 bars) à une pression dite intermédiaire (environ 9 bars) par un détendeur fixé sur lesdites bouteilles. Cet air à pression intermédiaire est amené par un flexible à un deuxième étage qui est relié à la bouche du plongeur par un embout buccal.Modern compressed air breathing apparatuses are generally of the two-stage type of relaxation. The compressed air of the bottles carried by the plunger is expanded for the first time from a high pressure (approximately 200 bars) to a so-called intermediate pressure (approximately 9 bars) by a pressure reducer fixed to said bottles. This air at intermediate pressure is brought by a hose to a second stage which is connected to the mouth of the plunger by a mouthpiece.

Dans ce deuxième étage, l'air est détendu de la pression intermédiaire à la pression ambiante, par un mécanisme actionné par la dépression provoquée par une demande d'air de la part du plongeur. Le débit d'air fournit par le deuxième étage en fonction de la dépression qui lui est appliquée par la demande d'air provoquée par le plongeur, caractérise la performance d'un appareil respiratoire.In this second stage, the air is expanded from the intermediate pressure to the ambient pressure, by a mechanism actuated by the depression caused by a demand for air on the part of the plunger. The air flow supplied by the second stage as a function of the vacuum applied to it by the air demand caused by the diver, characterizes the performance of a breathing apparatus.

Un détendeur de deuxième étage sera considéré généralement comme d'autant plus agréable pour l'utilisateur et performant que la dépression nécessaire pour obtenir un débit donné sera faible. Toutefois, ce type de matériel doit pouvoir répondre aux exigences des différents types d'utilisateurs. Lorsque les utilisateurs sont des plongeurs professionnels, en particulier lorsqu'il s'agit de plongeurs travaillant sous l'eau et faisant des efforts physiques, il est souhaitable que ceux-ci fassent un effort inspiratoire minimum pour déclencher l'arrivée d'air de respiration. Pour cela, il est nécessaire que l'ouverture de la vanne se fasse sous une dépression minimum. Inversement, lorsque ce matériel est utilisé dans les écoles de plongée sous-marine, il est nécessaire au contraire que la vanne s'ouvre sous une dépression accrue, c'est-à-dire un effort inspiratoire important, afin d'éviter une assistance trop forte desdits utilisateurs. De plus, selon la profondeur à laquelle est utlisé le matériel, le débit d'air est plus ou moins important, augmentant avec la profondeur à laquelle se trouve le plongeur.A second stage regulator will generally be considered to be all the more pleasant for the user and efficient as the vacuum required to obtain a given flow will be low. However, this type of equipment must be able to meet the requirements of different types of users. When the users are professional divers, in particular when they are divers working underwater and making physical efforts, it is desirable that they make a minimum inspiratory effort to trigger the arrival of air from breathing. For this, it is necessary that the opening of the valve takes place under a minimum vacuum. Conversely, when this material is used in scuba diving schools, it is necessary on the contrary that the valve opens under increased depression, that is to say a significant inspiratory effort, in order to avoid assistance too strong of said users. In addition, depending on the depth at which the material is used, the air flow is more or less important, increasing with the depth at which the plunger is located.

En outre, malgré les tolérances sérrées de fabrication, une petite différence dans les caractéristiques mécaniques des éléments de commande de la vanne de l'appareil respiratoire peuvent se traduire par une différence importante au niveau de l'effort inspiratoire du plongeur, toutes choses égales par ailleurs.In addition, despite the tight manufacturing tolerances, a small difference in the mechanical characteristics of the control elements of the valve of the respiratory system can result in a significant difference in the inspiratory effort of the diver, all other things being equal. elsewhere.

L'appareil selon l'invention permet de résoudre les différents problèmes exposés ci-dessus. Dans ce but, il est caractérisé en ce que le conduit de l'embout buccal comporte des moyens formant obstacle à la libre circulation de l'air de la chambre de détente vers la bouche de l'utilisateur, lesdits moyens ayant une forme telle que la dépression nécessaire pour l'ouverture de la vanne est comprise entre - 6 millibars et + 6 millibars pour un débit de 400 litres/mn.The apparatus according to the invention makes it possible to solve the various problems set out above. For this purpose, it is characterized in that the duct of the mouthpiece comprises means forming an obstacle to the free circulation of air from the expansion chamber towards the mouth of the user, said means having a shape such that the vacuum required to open the valve is between - 6 millibars and + 6 millibars for a flow rate of 400 liters / min.

De préférence, les moyens formant obstacle seront réglables de manière à créer un effort inspiratoire plus ou moins important selon la position desdits moyens.Preferably, the obstacle-forming means will be adjustable so as to create a more or less significant inspiratory force depending on the position of said means.

Selon un mode préférentiel de réalisation, lesdits moyens formant obstacle seront constitués par une languette séparant le conduit en un premier et second sous-conduits.According to a preferred embodiment, said obstacle-forming means will be constituted by a tongue separating the duct into a first and second sub-ducts.

De préférence, l'extrémité de la languette située du côté de la chambre de détente, sera placée en saillie dans ladite chambre de manière à créer une perte de charge dans le flux de gaz comprimé issu de la chambre vers le conduit. Afin d'améliorer encore cette perte de charge, la vanne, de préférence constituée d'un clapet mobile sur son siège placé à l'extrémité du conduit sera entourée d'un logement cylindrique perçé d'une ouverture par laquelle s'échappe le gaz issu du conduit, cette ouverture étant orientée vers l'extrémité en saillie de la languette. Cette ouverture sera de préférence placée à proximité dudit conduit.Preferably, the end of the tab located on the side of the expansion chamber will be projecting into said chamber so as to create a pressure drop in the flow of compressed gas coming from the chamber towards the conduit. In order to further improve this pressure drop, the valve, preferably consisting of a movable valve on its seat placed at the end of the duct, will be surrounded by a cylindrical housing pierced with an opening through which the gas escapes. coming from the conduit, this opening being oriented towards the projecting end of the tongue. This opening will preferably be placed near said conduit.

Selon une seconde forme de réalisation de l'invention, l'appareil comportera des moyens pour le réglage du déplacement de la languette parallèlement à elle-même dans le conduit. Selon une troisième forme de réalisation de l'invention, la languette sera mobile autour d'un axe situé dans son plan et sensiblement parallèle au plan d'extrémité de l'embout buccal, ladit languette comportant des moyens de commande placés à l'extérieur de l'embout buccal pour commander la rotation de celle-ci dans le conduit.According to a second embodiment of the invention, the device will include means for adjusting the movement of the tongue parallel to itself in the conduit. According to a third embodiment of the invention, the tongue will be movable about an axis located in its plane and substantially parallel to the end plane of the mouthpiece, said tongue comprising control means placed outside of the mouthpiece to control the rotation of the latter in the conduit.

L'invention sera mieux comprise à l'aide des exemples de réalisation suivants, donnés à titre non limitatif, conjointement avec les figures qui représentent :

  • - la figure 1 une vue en coupe de l'appareil respiratoire selon l'invention ;
  • - la figure 2 une vue selon l'axe A-A du respirateur de la figure 1 ;
  • - la figure 3 une vue en coupe selon l'axe C-C de l'appareil de la figure 1 ;
  • - la figure 4 une vue en coupe de l'appareil de la figure 3 au niveau de l'embout buccal ;
  • - les figures 5, 6, 7, des variantes de réalisation de l'appareil selon l'invention ;
  • - la figure 8 une illustration des courbes représentant le débit d'air comprimé en l/mn en fonction de la dépression, selon les différentes positions de la lame de réglage telle que représentées sur la figure 4.
The invention will be better understood with the aid of the following embodiments, given without limitation, together with the figures which represent:
  • - Figure 1 a sectional view of the respiratory system according to the invention;
  • - Figure 2 a view along the axis AA of the respirator of Figure 1;
  • - Figure 3 a sectional view along the axis CC of the apparatus of Figure 1;
  • - Figure 4 a sectional view of the device of Figure 3 at the mouthpiece;
  • - Figures 5, 6, 7, alternative embodiments of the apparatus according to the invention;
  • FIG. 8 an illustration of the curves representing the flow of compressed air in l / min as a function of the vacuum, according to the different positions of the adjusting blade as shown in FIG. 4.

Sur la figure 1 est représentée une vue en coupe schématique de l'appareil selon l'invention. L'appareil comporte une flexible 1 d'amenée d'air comprimé à l'appareil selon l'invention, communément appelé deuxième étage de détente de l'air comprimé de respiration. Cet appareil comporte un conduit d'arrivé de gaz comprimé 6 dont l'extrémité 70 constitue le siège d'un clapet 7 de la vanne de passage de l'air comprimé arrivant à moyenne pression dans la chambre de détente 15 de ce deuxième étage. Ce clapet 7 est solidaire d'une platine carrée 71 placée dans un logement cylindrique 13. De cette manière, on dégage ainsi des passages 9 et 72 entre les côtés de la platine 71 et le logement 13, permettant la communication entre l'espace 8 situé autour de l'extrémité du conduit d'amenée de gaz 6 et l'espace 11 situé à l'intérieur de la chambre cylindrique 13. Celle-ci se termine par une extrémité supérieure 73 sur laquelle vient prendre appui un ressort de rappel 10 qui repousse la platine 71 et le clapet 7 sur son siège 70. La platine 71 est solidaire d'un axe 2 traversant le capuchon supérieur 73 du logement cylindique 13 et solidaire d'un levier 3 dont l'extrémité 14 vient au contact de la membrane 4. Celle-ci vient se fixer au-dessus de la chambre de détente 15, par son extrémité périphérique 18 formant joint, séparant ainsi ladite chambre 15 d'un espace supérieur 74 dans lequel on retrouve le fluide ambiant (c'est-à-dire l'eau lors de la plongée). Cet espace 74 est délimité par un couvercle 75 placé au-dessus le chambre 15, au centre duquel est situé un bouton poussoir 16 rappelé dans la position illustrée sur la figure par un ressort de rappel 17. Ce bouton poussoir permet de faire fonctionner à vide l'appareil de manière connue en soi par action du levier 76 sur la membrane 4 et le levier 3 qui vient commander l'ouverture de la vanne. Le logement cylindrique 13 comporte au voisinage de son couvercle 73, une ouverture 12 dont l'axe 20 est orienté sensiblement en direction du conduit 21 (voir figure 2). La chambre de détente 15 comporte une paroi cylindrique verticale 19 sur laquelle vient s'appuyer l'air issu de l'ouverture 12 selon la direction de l'axe 20, cette paroi 19 conduisant l'air comprimé vers le conduit 21. Celui-ci comporte sur les figures 1 et 2 une languette 5 disposée sensiblement au milieu dudit conduit 21.In Figure 1 is shown a schematic sectional view of the apparatus according to the invention. The device comprises a hose 1 for supplying compressed air to the device according to the invention, commonly known as the second stage for expanding the compressed breathing air. This device comprises a compressed gas inlet pipe 6, the end 70 of which forms the seat of a valve 7 of the valve for the passage of compressed air arriving at medium pressure in the expansion chamber 15 of this second stage. This valve 7 is integral with a square plate 71 placed in a cylindrical housing 13. In this way, it clears passages 9 and 72 between the sides of the plate 71 and the housing 13, allowing communication between the space 8 located around the end of the gas supply pipe 6 and the space 11 located inside the cylindrical chamber 13. The latter ends with an upper end 73 on which a return spring 10 comes to bear which pushes back the plate 71 and the valve 7 on its seat 70. The plate 71 is secured to an axis 2 passing through the upper cap 73 of the cylindrical housing 13 and secured to a lever 3 whose end 14 comes into contact with the membrane 4. This is fixed above the expansion chamber 15, by its peripheral end 18 forming a seal, thus separating said chamber 15 from an upper space 74 in which the ambient fluid is found (that is ie water when diving). This space 74 is delimited by a cover 75 placed above the chamber 15, in the center of which is located a push button 16 returned to the position illustrated in the figure by a return spring 17. This push button allows the vacuum device to operate manner known per se by action of the lever 76 on the membrane 4 and the lever 3 which controls the opening of the valve. The cylindrical housing 13 comprises in the vicinity of its cover 73, an opening 12 whose axis 20 is oriented substantially in the direction of the conduit 21 (see Figure 2). The expansion chamber 15 has a vertical cylindrical wall 19 on which the air coming from the opening 12 comes to bear in the direction of the axis 20, this wall 19 leading the compressed air to the duct 21. This this comprises in FIGS. 1 and 2 a tongue 5 disposed substantially in the middle of said conduit 21.

Le fonctionnement du dispositif représenté sur les figures 1 et 2 est le suivant :
Lorsque l'utilisateur, dont la bouche se trouve à l'extrémité de l'embout buccal 22 (voir figure 3), fait un effort inspiratoire, ceci provoque une dépression dans la chambre 15. Cette dépression engendre un déplacement de la membrane souple 4 compte-tenu de la pression du fluide régnant dans le logement 74. Le déplacement de cette membrane (vers le bas sur la figure 1) engendre le déplacement (vers le bas) du levier 3 qui vient commander le déplacement longitudinal de l'axe 2, en s'opposant à la force développée par le ressort de rappel 10. Le clapet 7 se sépare de son siège 70, ce qui autorise le passage d'air comprimé du conduit 6 via la chambre 8, les passages 9-72, le logement 11, cet air comprimé étant éjecté par l'ouverture 12 en direction du conduit 21, et remplissant de ce fait la chambre 15. Lorsque l'utilisatuer n'exerce plus d'effort inspiratoire suffisant, la pression dans la chambre 15 devient égale à la pression dans le logement 74, ce qui ramène la membrane 4 dans sa position d'équilibre stable, position dans laquelle le levier 3 commande la fermeture du clapet 7 sur son siège 70.The operation of the device shown in Figures 1 and 2 is as follows:
When the user, whose mouth is at the end of the mouthpiece 22 (see FIG. 3), makes an inspiratory effort, this causes a depression in the chamber 15. This depression generates a displacement of the flexible membrane 4 taking into account the pressure of the fluid prevailing in the housing 74. The displacement of this membrane (downwards in FIG. 1) generates the displacement (downwards) of the lever 3 which comes to control the longitudinal displacement of the axis 2 , by opposing the force developed by the return spring 10. The valve 7 separates from its seat 70, which allows the passage of compressed air from the conduit 6 via the chamber 8, the passages 9-72, the housing 11, this compressed air being ejected through the opening 12 in the direction of the conduit 21, and thereby filling the chamber 15. When the user no longer exerts sufficient inspiratory force, the pressure in the chamber 15 becomes equal pressure in the housing 74, which brings the membrane 4 back into its po stable equilibrium position, position in which the lever 3 controls the closing of the valve 7 on its seat 70.

La figure 3 explicite plus particulièrement le rôle et la fonction de la languette 5 dans le conduit 21. Cette languette 5 comporte une première partie 34 située du côté de la chambre de détente 15, l'extrémité supérieure 37 de cette languette 5, délimitée par le prolongement de la paroi inférieure 29 de la chambre de détente 15, se trouvant ainsi en saillie, d'une hauteur l₀ à l'intérieur de ladite chambre de détente 15. La première partie rectangulaire 34 de la languette 5, de largeur l₁, se prolonge par une seconde partie 35 de forme également sensiblement rectangulaire, de largeur l₂ supérieure à l₁. Les jonctions des première et deuxième parties 34 et 35 de la languette 5 déterminent ainsi des butées 301 et 310, venant au contact d'épaulements 30 et 31, situés au fond des rainures de réglage 38 et 39 (figure 4). La seconde partie 35 de la languette 5 se termine par un évasement délimité par des parties arrondies 32 et 33 venant au contact des parois de l'embout buccal 22. Le bord 76 de la languette 5 qui affleure à l'extérieur de l'embout buccal 22 a ainsi une largeur l₃ supérieure à l₂.FIG. 3 more specifically explains the role and function of the tongue 5 in the duct 21. This tongue 5 has a first part 34 located on the side of the expansion chamber 15, the upper end 37 of this tongue 5, delimited by the extension of the lower wall 29 of the expansion chamber 15, thus projecting, from a height l₀ inside said expansion chamber 15. The first rectangular part 34 of the tongue 5, of width l₁, is extended by a second part 35 of also substantially rectangular shape, of width l₂ greater than l₁. The junctions of the first and second parts 34 and 35 of the tongue 5 thus determine stops 301 and 310, coming into contact with shoulders 30 and 31, located at the bottom of the adjustment grooves 38 and 39 (Figure 4). The second part 35 of the tongue 5 ends in a widening delimited by rounded parts 32 and 33 coming into contact with the walls of the mouthpiece 22. The edge 76 of the tongue 5 which is flush with the outside of the mouthpiece buccal 22 thus has a width l₃ greater than l₂.

Sur la figure 4 qui est une vue en coupe selon B-B de l'appareil de la figure 3, est illustré le réglage et la fonction de la languette 5. Le conduit 21, est délimité par une paroi extérieure 77 dans laquelle est placée une paroi adjacente 78. Sur les deux bords parallèles et opposés 62, 63 (horizontaux sur la figure) de cette paroi intérieure 78, sont disposés respectivement dix rainures inférieures 38 et dix rainures supérieures 39. Chacune de ces rainures a une position repérée par les repéres L₁ à L₁₀. Le repére L₁ correspondant aux rainures 38 et 39 situées à l'extrémité droite de la figure 4, tandis que le repére L₁₀ correspond aux rainures 38 et 39 situées à l'extrémité gauche sur la figure 4. La languette 5 peut ainsi être déplacée dans l'une quelconque des dix positions L₁ ... L₁₀. Quelle que soit la position, celle-ci délimite deux sous-conduits 60 et 61 du conduit 21. La position L₁ de la lame est la position correspondant sur la figure 2 à la lamelle 5 située à proximité de l'orifice 12 (position la plus à gauche sur la figure 2).In Figure 4 which is a sectional view along BB of the apparatus of Figure 3, is illustrated the setting and the function of the tongue 5. The conduit 21 is delimited by an outer wall 77 in which is placed a wall adjacent 78. On the two parallel and opposite edges 62, 63 (horizontal in the figure) of this inner wall 78, are arranged respectively ten lower grooves 38 and ten upper grooves 39. Each of these grooves has a position marked by the marks L₁ at L₁₀. The mark L₁ corresponding to the grooves 38 and 39 located at the right end of Figure 4, while the mark L₁₀ corresponds to the grooves 38 and 39 located at the left end in Figure 4. The tongue 5 can thus be moved in any of the ten positions L₁ ... L₁₀. Whatever the position, this delimits two sub-conduits 60 and 61 of the conduit 21. The position L₁ of the blade is the position corresponding in FIG. 2 to the lamella 5 located near the orifice 12 (position la more to the left in Figure 2).

La figure 8 montre les résultats obtenus avec un appareil tel que défini sur les figures précédentes. Les courbes illustrées du débit en l/mn d'air comprimé en fonction de la dépression créée par l'utilisateur, montrent que le dispositif dans l'exemple réalisé n'a pas d'influence jusqu'à un débit de l'ordre de 200 l/mn (pour une inspiration à la pression atmosphérique). Par contre, au-delà de 200 l/mn comme cela est représenté sur cette figure, on voit l'influence de la position de la languette dans le conduit 21. Lorsque la languette est en position L₁ (la plus à gauche sur la figure 2), l'effort inspiratoire augmente lorsque le débit augmente. La dépression est de l'ordre de 7 millibars pour un débit de 400 l/mn, ce qui signifie un effort assez important à l'inspiration au fur et à mesure de la descente du plongeur. En position L₅, la dépression est sensiblement constante, comme en position L₄, ce qui signifie que l'effort inspiratoire du plongeur sera le même quelle que soit la profondeur à laquelle il se trouve. Des positions L₆ à L₁₀, on voit que le plongeur à chaque inspiration aura à fournir le travail nécessaire pour arriver au débit de 300 l/mn, l'effort inspiratoire à partir de ce débit devenant nul. Bien entendu, lorsque les poumons du plongeur sont remplis d'air, le clapet 7 vient se refermer sur son siège 70.Figure 8 shows the results obtained with an apparatus as defined in the previous figures. The illustrated curves of the flow rate in l / min of compressed air as a function of the vacuum created by the user, show that the device in the example produced has no influence until a flow rate of the order of 200 l / min (for inspiration at atmospheric pressure). By cons, beyond 200 l / min as shown in this figure, we see the influence of the position of the tongue in the duct 21. When the tongue is in position L₁ (the left most in the figure 2), the inspiratory effort increases when the flow increases. The depression is of the order of 7 millibars for a flow rate of 400 l / min, which means a fairly significant effort on inspiration as the diver descends. In position L₅, the vacuum is substantially constant, as in position L₄, which means that the inspiratory effort of the diver will be the same regardless of the depth at which it is located. From positions L₆ to L₁₀, we see that the diver at each inspiration will have to provide the work necessary to arrive at the flow rate of 300 l / min, the inspiratory effort from this flow rate becoming zero. Of course, when the diver's lungs are filled with air, the valve 7 closes on its seat 70.

Les figures 5, 6 et 7 représentent des variantes de réalisation de la languette représentée sur les figures précédentes. Sur la figure 5, il est prévu un déplacement de la languette parallèlement à elle-même dans le conduit 21. Pour ce faire, ladite languette 5 est solidaire d'une vis sans fin 51 comportant à son extrémité droite sur la figure un bouton de manoeuvre 50. Celui-ci est situé à l'extérieur de l'embout buccal, placé de manière à ne pas géner le plongeur lorsque l'embout est placé dans la bouche de celui-ci. Le plongeur peut ainsi en tournant le bouton 50 dans le sens voulu déplacer la languette 5 dans un sens ou dans l'autre et ainsi augmenter ou diminuer la dépression.Figures 5, 6 and 7 show alternative embodiments of the tongue shown in the previous figures. In FIG. 5, provision is made for a displacement of the tongue parallel to itself in the conduit 21. To do this, said tongue 5 is secured to an endless screw 51 comprising at its right end in the figure a button for operation 50. This is located outside the mouthpiece, placed so as not to hinder the plunger when the mouthpiece is placed in the mouth thereof. The plunger can thus by turning the button 50 in the desired direction move the tongue 5 in one direction or the other and thus increase or decrease the vacuum.

La figure 6 représente une variante de la figure 5 dans laquelle la languette 5 est solidaire d'un axe 54 qui peut se déplacer en translation à travers l'embout buccal 22, grâce à deux queues de manoeuvre 52 et 53 placées de part et d'autre de cet axe 54. De préférence, sont prévus un certain nombre de points d'équilibre stable : crans, points durs, etc...FIG. 6 represents a variant of FIG. 5 in which the tongue 5 is integral with an axis 54 which can move in translation through the mouthpiece 22, thanks to two operating tails 52 and 53 placed on either side 'other of this axis 54. Preferably, a number of points of stable equilibrium are provided: notches, hard points, etc.

Dans les deux cas représentés sur les figures 5 et 6, la languette 5, comme dans l'exemple de réalisation des figures 1 à 4, peut être placé en saillie dans la chambre de dépression 15, avec les avantages qui en résultent au niveau de la perte de charge engendrée par l'extrémité en saillie de ladite languette 5.In the two cases represented in FIGS. 5 and 6, the tongue 5, as in the embodiment of FIGS. 1 to 4, can be placed in projection in the vacuum chamber 15, with the advantages which result from it in terms of the pressure drop generated by the projecting end of said tongue 5.

La figure 7 représente une variante de réalisation de l'invention dans laquelle le déplacement de la languette est assuré par rotation selon un axe 80 définit conformément à la revendication 14. La commande de rotation s'effectue par l'intermédiaire de l'axe 56, du bouton de commande 55 et d'un système d'engrenages connu en soi 57. De préférence, on utilisera un certain nombre de positions stables de la languette, telles que 58 (crans, points durs, ...). Cette variante ne présente cependant pas l'avantage des précédentes car compte tenu généralement des dimensions et de la forme du conduit 21 (voir en particulier la figure 4), la languette ne peut se trouver en saillie dans la chambre 15. De plus, à partir d'une certaine position, le déplacement de quelques degrés provoque une très importante perte de charge, ce qui rend cette variante plus difficilement utilisable.FIG. 7 represents an alternative embodiment of the invention in which the movement of the tongue is ensured by rotation along an axis 80 defined in accordance with claim 14. The rotation control is effected via the axis 56 , the control button 55 and a gear system known per se 57. Preferably, a certain number of stable positions of the tongue will be used, such as 58 (notches, hard points, etc.). This variant does not however have the advantage of the previous ones because generally given the dimensions and the shape of the conduit 21 (see in particular FIG. 4), the tongue cannot be projecting into the chamber 15. In addition, from a certain position, the displacement of a few degrees causes a very large pressure drop, which makes this variant more difficult to use.

Claims (15)

1. Appareil respiratoire à air comprimé, en particulier pour la plongée sous-marine, comportant des moyens d'amenée d'air comprimé (1) débouchant dans une chambre de détente (15) de l'air comprimé, par l'intermédiaire d'une vanne (6, 7, 2, 10, 13, 3, 14) dont l'ouverture et la fermeture sont commandées par des moyens (4) sensibles à l'effort inspiratoire de l'utilisateur, et un embout buccal (22) comportant un conduit (21) qui met en communication la chambre de détente (15) avec la bouche de l'utilisateur, caractérisé en ce que le conduit (21) de l'embout buccal (22) comporte des moyens (5) formant obstacle à la libre circulation de l'air de la chambre de détente (15) vers la bouche de l'utilisateur, lesdits moyens (5) ayant une forme telle que la dépression nécessaire à l'ouverture de la vanne est comprise entre - 6 mbar et + 6 mbar pour un débit de 400 litres/mn.1. Compressed air breathing apparatus, in particular for scuba diving, comprising compressed air supply means (1) opening into a pressure reduction chamber (15) via compressed air. '' a valve (6, 7, 2, 10, 13, 3, 14) whose opening and closing are controlled by means (4) sensitive to the inspiratory effort of the user, and a mouthpiece (22 ) comprising a conduit (21) which places the expansion chamber (15) in communication with the mouth of the user, characterized in that the conduit (21) of the mouthpiece (22) comprises means (5) forming obstacle to the free circulation of air from the expansion chamber (15) towards the mouth of the user, said means (5) having a shape such that the vacuum necessary for the opening of the valve is between - 6 mbar and + 6 mbar for a flow rate of 400 liters / min. 2. Appareil respiratoire selon la revendication 1, caractérisé en ce que les moyens formant obstacle sont réglables de manière à créer un effort inspiratoire plus ou moins important selon la position desdits moyens.2. Breathing apparatus according to claim 1, characterized in that the obstacle-forming means are adjustable so as to create a more or less significant inspiratory force depending on the position of said means. 3. Appareil respiratoire selon les revendications 1 ou 2, caractérisé en ce que les moyens formant obstacle sont constitués par une languette séparant le conduit (21) en un premier et un second sous-conduits (60, 61).3. Breathing apparatus according to claims 1 or 2, characterized in that the obstacle-forming means consist of a tongue separating the conduit (21) into a first and a second sub-conduit (60, 61). 4. Appareil respiratoire selon la revendication 3, caractérisé en ce que la languette comporte deux côtés sensiblement parallèles (90, 91) qui viennent se loger respectivement dans une première (38) et dans une seconde (39) rainures disposées sur deux parois opposées (62, 63) du conduit 21.4. Breathing apparatus according to claim 3, characterized in that the tongue has two substantially parallel sides (90, 91) which are housed respectively in a first (38) and in a second (39) grooves arranged on two opposite walls ( 62, 63) of conduit 21. 5. Appareil respiratoire selon la revendication 4, caractérisé en ce que sur les deux parois opposées (62, 63) du conduit 21 sont disposées une pluralité de premières rainures (38) et de secondes rainures (39) constituant des moyens de réglage de la languette (5).5. Breathing apparatus according to claim 4, characterized in that on the two opposite walls (62, 63) of the conduit 21 are arranged a plurality of first grooves (38) and second grooves (39) constituting means for adjusting the tongue (5). 6. Appareil respiratoire selon les revendications 3 à 5, caractérisé en ce que la languette (5) comporte une première partie sensiblement rectangulaire (36) située du côté de la chambre de détente (15) et une seconde partie sensiblement rectangulaire (35) prolongant la première, mais plus large que celle-ci, définissant une première et seconde butée (301, 310) coopérant avec un premier et un second épaulement (30, 31) situé dans les première et seconde rainures (38, 39).6. Breathing apparatus according to claims 3 to 5, characterized in that the tongue (5) has a first substantially rectangular part (36) located on the side of the expansion chamber (15) and a second substantially rectangular part (35) extending the first, but wider than the latter, defining a first and second stop (301, 310) cooperating with first and second shoulders (30, 31) located in the first and second grooves (38, 39). 7. Appareil respiratoire selon la revendication 6, caractérisé en ce que la seconde partie (35) de la languette (5) se termine au niveau de l'embout buccal (22) par un évasement (32, 33).7. Breathing apparatus according to claim 6, characterized in that the second part (35) of the tongue (5) ends at the mouthpiece (22) by a flare (32, 33). 8. Appareil respiratoire selon l'une des revendications 3 à 7, caractérisé en ce que l'extrémité (37) de la languette (5) située du côté de la chambre de détente (5) est placée en saillie dans la chambre (15) de manière à créer une perte de charge dans le flux de gaz comprimé issu de la chambre (15) vers le conduit (21).8. Breathing apparatus according to one of claims 3 to 7, characterized in that the end (37) of the tongue (5) located on the side of the expansion chamber (5) is projecting into the chamber (15 ) so as to create a pressure drop in the flow of compressed gas from the chamber (15) towards the conduit (21). 9. Appareil respiratoire selon la revendication 8, caractérisé en ce que la vanne (67, 2, 10, 13, 3, 14) est constituée d'un clapet mobile (7) sur le siège (70) jusqu'à l'extrémité du conduit (6), entourés d'un logement cylindrique (13) percé d'une ouverture (12) par laquelle s'échappe le gaz issu du conduit 6, cette ouverture (12) étant orientée vers l'extrémité en saillie (37) de la languette (5).9. Breathing apparatus according to claim 8, characterized in that the valve (67, 2, 10, 13, 3, 14) consists of a movable valve (7) on the seat (70) to the end of the duct (6), surrounded by a cylindrical housing (13) pierced with an opening (12) through which gas from the duct 6 escapes, this opening (12) being oriented towards the projecting end (37 ) of the tongue (5). 10. Appareil respiratoire selon la revendication 9, caractérisé en ce que l'ouverture (12) est placée à proximité du conduit 21.10. Breathing apparatus according to claim 9, characterized in that the opening (12) is placed near the duct 21. 11. Appareil respiratoire selon l'une des revendications 1 à 3, caractérisé en ce qu'il comporte des moyens pour le réglage du déplacement de la languette parallélement à elle-même dans le conduit (21).11. Breathing apparatus according to one of claims 1 to 3, characterized in that it comprises means for adjusting the movement of the tongue parallel to itself in the conduit (21). 12. Appareil respiratoire selon la revendication 11, caractérisé en ce que les moyens de réglage sont constitués par une vis sans fin (51) sur laquelle se déplace la languette (5), la rotation de la vis (51) étant commandée par un bouton de commande (50) placé sur l'embout buccal, à l'extérieur de celui-ci mais à proximité du fond de la chambre de détente (15).12. Breathing apparatus according to claim 11, characterized in that the adjustment means consist of an endless screw (51) on which the tongue (5) moves, the rotation of the screw (51) being controlled by a button control (50) placed on the mouthpiece, outside thereof but close to the bottom of the expansion chamber (15). 13. Appareil respiratoire selon la revendication 11, caractérisé en ce que la languette est solidaire d'un axe (54) déplacable latéralement par crans successifs à l'aide de queues de manoeuvre (52, 53) placées de part et d'autre de l'axe (54), à l'extérieur de l'embout (22).13. Breathing apparatus according to claim 11, characterized in that the tongue is secured to an axis (54) movable laterally by successive notches using operating tails (52, 53) placed on either side of the axis (54), outside the end piece (22). 14. Appareil selon les revendications 1 à 3, caractérisé en ce que la languette est mobile autour d'un axe situé dans son plan et sensiblement parallèle au plan d'extrémité de l'embout buccal (22), ladite languette comportant des moyens de commande placés à l'extérieur de l'embout buccal pour commander la rotation de cell-ci dans le conduit (21).14. Apparatus according to claims 1 to 3, characterized in that the tongue is movable about an axis located in its plane and substantially parallel to the end plane of the mouthpiece (22), said tongue comprising means for control placed outside the mouthpiece to control the rotation of the mouthpiece (21). 15. Appareil respiratoire à air comprimé, en particulier pour la plongée sous-marine, comportant des moyens d'amenée d'air comprimé (1) débouchant dans une chambre de détente (15) de l'air comprimé, par l'intermédiaire d'une vanne (6, 7, 2, 10, 13, 3, 14) dont l'ouverture et la fermeture sont commandées par des moyens (4) sensibles à l'effort inspiratoire de l'utilisateur, et un embout buccal (22) comportant un conduit (21) qui met en communication la chambre de détente (15) avec la bouche de l'utilisateur, caractérisé en ce que le conduit (21) de l'embout buccal (22) comporte des moyens (5) formant obstacle à la libre circulation de l'air de la chambre de détente (15) vers la bouche de l'utilisateur, lesdits moyens (5) comportant des moyens de réglage parallèlement à eux-mêmes dans le conduit (21).15. Breathing apparatus with compressed air, in particular for scuba diving, comprising means for supplying compressed air (1) opening into a pressure reduction chamber (15) via compressed air. '' a valve (6, 7, 2, 10, 13, 3, 14) whose opening and closing are controlled by means (4) sensitive to the inspiratory effort of the user, and a mouthpiece (22 ) comprising a conduit (21) which places the expansion chamber (15) in communication with the mouth of the user, characterized in that the conduit (21) of the mouthpiece (22) comprises means (5) forming obstacle to the free circulation of air from the expansion chamber (15) towards the mouth of the user, said means (5) comprising adjustment means parallel to themselves in the duct (21).
EP87400348A 1986-02-21 1987-02-18 Breathing apparatus for compressed air for diving Expired - Lifetime EP0236208B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8602367 1986-02-21
FR8602367A FR2594786B1 (en) 1986-02-21 1986-02-21 COMPRESSED AIR RESPIRATORY APPARATUS FOR SCUBA DIVING

Publications (2)

Publication Number Publication Date
EP0236208A1 true EP0236208A1 (en) 1987-09-09
EP0236208B1 EP0236208B1 (en) 1990-05-02

Family

ID=9332365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400348A Expired - Lifetime EP0236208B1 (en) 1986-02-21 1987-02-18 Breathing apparatus for compressed air for diving

Country Status (4)

Country Link
US (1) US4798202A (en)
EP (1) EP0236208B1 (en)
DE (1) DE3762499D1 (en)
FR (1) FR2594786B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000005305A1 (en) * 2020-03-12 2021-09-12 Mares Spa Regulating diaphragm for the second-stage regulator of two-stage underwater breathing apparatus

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1220578B (en) * 1988-06-08 1990-06-15 Amf Mares Spa BREATHING REGULATOR WITH CONNECTION ELEMENT TO THE FIRST STAGE MOUNTED ON THE RIGHT AND LEFT SIDE
FR2644750A1 (en) * 1989-03-21 1990-09-28 Spirotech Ind Commerc DEVICE FOR SUPPLYING RESPIRATORY GAS FOR A PLUNGER
DE69022697T2 (en) * 1989-06-06 1996-05-15 Preece T D & Co Pty Ltd DIVER REGULATION VENTILATION VALVE.
FR2676000B1 (en) * 1991-05-02 1995-12-22 Spirotech Ind Commerc RESPIRATORY GAS SUPPLY DEVICE.
US5222490A (en) * 1991-09-26 1993-06-29 Dacor Corporation Breathing regulator having air injector feature
US5233976A (en) * 1992-04-27 1993-08-10 Dacor Corporation Second stage regulator hose with built-in cone adjusting tool
US5259374A (en) * 1992-06-12 1993-11-09 Miller Russell L Diver adjustable control for underwater breathing apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893386A (en) * 1957-04-04 1959-07-07 Sajeck George Gas demand equipment
US4041977A (en) * 1975-08-04 1977-08-16 Takayoshi Matsuno Breathing apparatus flow regulator
US4446859A (en) * 1981-07-06 1984-05-08 Dacor Corporation Breathing apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728340A (en) * 1952-10-09 1955-12-27 Firewel Ind Control device for breathing apparatus
US3362429A (en) * 1964-11-05 1968-01-09 Voit Rubber Corp Second stage pressure regulator with external means for adjusting the position of the demand lever
US4266538A (en) * 1979-05-08 1981-05-12 General Diving Corporation Pressure regulator
US4467797A (en) * 1980-12-15 1984-08-28 Franke David M Breathing effort reduction device for scuba gear
US4572175A (en) * 1983-07-20 1986-02-25 Flynn Stephen D Multi-mode demand valve
US4616645A (en) * 1985-05-24 1986-10-14 Dacor Corporation Diving regulator with anti free-flow vane
US4683881A (en) * 1985-10-30 1987-08-04 U.S.D. Corp. Breathing regulator mouthpiece

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893386A (en) * 1957-04-04 1959-07-07 Sajeck George Gas demand equipment
US4041977A (en) * 1975-08-04 1977-08-16 Takayoshi Matsuno Breathing apparatus flow regulator
US4446859A (en) * 1981-07-06 1984-05-08 Dacor Corporation Breathing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000005305A1 (en) * 2020-03-12 2021-09-12 Mares Spa Regulating diaphragm for the second-stage regulator of two-stage underwater breathing apparatus
EP3878731A1 (en) * 2020-03-12 2021-09-15 Mares S.p.A. Regulating membrane for the second-stage regulator of two stage underwater breathing apparatuses

Also Published As

Publication number Publication date
FR2594786B1 (en) 1988-05-13
FR2594786A1 (en) 1987-08-28
US4798202A (en) 1989-01-17
EP0236208B1 (en) 1990-05-02
DE3762499D1 (en) 1990-06-07

Similar Documents

Publication Publication Date Title
EP3140186B1 (en) Diving mask having a built-in snorkel
EP0091843B1 (en) Connector for a breathing apparatus, linking the mask to a gas-cylinder
CA1325577C (en) Single membrane electromagnetic valve single membrane commutation micro-valve
FR2643562A1 (en) TUBA FOR DIVERS WITHOUT COMBINATION
EP0236208A1 (en) Breathing apparatus for compressed air for diving
WO2016193643A1 (en) Valve for a pressurized cooking appliance, and pressurized cooking appliance provided with such a valve
US4796618A (en) Breathing regulator apparatus
US4214580A (en) Breathing apparatus
EP3406289A1 (en) Improved water tank for a heating gas humidifier supplied by a medical ventilator
FR2556810A1 (en) INVERTING CONTROL DISTRIBUTOR OF THE HYDRAULIC OR PNEUMATIC FLUID FLOW DIRECTION
FR3083164B1 (en) COANDA-EFFECT AERATOR FOR MOTOR VEHICLES
EP0184952B1 (en) Air regenerator by means of an oxygen jet venturi
EP1189806A1 (en) Automatic underwater breathing membrane with integrated manual recharge
EP3194818A1 (en) Connection system comprising a closing device for diving regulator
FR2867390A1 (en) Air distributor for sportsman, has telescopic part, adjusting system and air distribution adjusting device, and flexible tubes and bend that are maintained on headband fixed with locking thumb wheel to hold conduit and ear-flap
FR2491428A1 (en) Divers breathing appts. with oxygen bottle - has diaphragm subjected to environmental pressure controlling oxygen concentration
FR2509419A1 (en) VALVE HAVING EXCENTRIQUES MOUNTED ON ITS MANUAL CONTROL ROD
WO1991002677A1 (en) Individual diving equipment
FR2520421A1 (en) Cleaner for swimming pool - incorporates releasable suction brake which causes it to change direction
FR3018454A1 (en) RESPIRATORY
FR2535612A1 (en) Improved breathing valve
FR3058125A1 (en) TUBA
EP0146161A2 (en) Adjustable hose connection valve for breathing-air supply
FR2732607A1 (en) Volumetric respiratory apparatus with improved valve block
FR2546126A1 (en) Breathing apparatus for diving, with semi-closed circuit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19870221

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19880928

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

REF Corresponds to:

Ref document number: 3762499

Country of ref document: DE

Date of ref document: 19900607

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed
ITTA It: last paid annual fee
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: FR

Payment date: 20020114

Year of fee payment: 16

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

Ref country code: GB

Payment date: 20020117

Year of fee payment: 16

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

Ref country code: DE

Payment date: 20020121

Year of fee payment: 16

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030902

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050218