EP0645164B1 - Respiratory protection equipment with rapid positioning - Google Patents

Respiratory protection equipment with rapid positioning Download PDF

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Publication number
EP0645164B1
EP0645164B1 EP94402080A EP94402080A EP0645164B1 EP 0645164 B1 EP0645164 B1 EP 0645164B1 EP 94402080 A EP94402080 A EP 94402080A EP 94402080 A EP94402080 A EP 94402080A EP 0645164 B1 EP0645164 B1 EP 0645164B1
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EP
European Patent Office
Prior art keywords
strap
harness
mask
additional
stretchable
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.)
Expired - Lifetime
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EP94402080A
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German (de)
French (fr)
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EP0645164A1 (en
Inventor
Alain Dubruille
Patrick Morvan
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Safran Aerosystems SAS
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Intertechnique SA
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/084—Means for fastening gas-masks to heads or helmets

Definitions

  • the invention relates to protective equipment respirator comprising a respiratory mask, a harness allowing rapid installation, and sometimes glasses smoke protection integrated or not in the mask.
  • the mask is fitted with a demand regulator, with dilution in general ; the masks can be provided to be put on overpressure (which requires that the harness can exert enough traction on the mask to apply it so noticeably waterproof on the face, despite the overpressure) or not.
  • the present invention aims to provide equipment for respiratory protection, in particular against hypoxia, of the type above defined, likely to be implemented on a helmet and allowing extended wear without sacrifice for security.
  • the invention provides a characterized equipment in that the harness also has a strap additional flexible, little or not extensible, provided with a manual direct clamping. We can consider as little stretch a fastener whose length does not vary from more than a few percent depending on its tension.
  • the additional tightening strap can be made by a simple strap or strap in two connected parts by a clip already in place, which can be tightened by simple manual pull on a protruding strand.
  • the additional strap is advantageously connected to the strap or to the extendable straps by inflation, so as to follow their movement.
  • the additional strap can be placed between the two inflatable straps and connected to them by cords distributed around the head.
  • a chin rest can be planned, adjustable or not.
  • An upper strap passing over of the helmet, avoiding the downward displacement of the mask, for example in case of ejection, can be provided and equipped or not with means for adjusting the tightening.
  • the mask can be simply oro-nasal, generally with a shape such as glasses or a visor can lean on it to protect the eyes.
  • the mask can as well be complemented by one piece glasses with the face cover.
  • the mask shown has an oro-nasal face cover attached to a regulator at the request 13 and to a rigid connection block 12.
  • the block of connection is provided with a connection fitting with a pipe flexible 14 intended to be connected to a gas source pressurized breathing (pressurized oxygen in general).
  • the harness shown by way of example comprises two straps 16 each consisting of an inner tube in elastic material contained in an inextensible sheath limiting the elongation of the tube.
  • the length at rest of internal tubes is such that they tend to apply the face cover on the face with the force necessary to ensure the required seal, even when the mask is subject to respiratory overpressure.
  • the regulator will be with or without dilution by aspirated air in the cabin, with or without the possibility of overpressure.
  • the regulator is connected to the pipe supply 14 by the connection block 12.
  • This block carries means for manually controlling the inflation of the straps 16, constituted for example by a tap intended to be actuated by manual pinching of two ears 18 carried by the connection block 12 and one of which is tiltable.
  • the tap is constructed so as to put in communication an internal volume of the connection block 12 and the 16 straps with the atmosphere when free. It allows then the straps to retract and apply the mask against the face.
  • the tap When the tap is turned on, it admits unlike pressurized gas from the supply line 14 in the volume and causes a sufficient lengthening of the straps to allow quick place. So that the straps, when they retract, ensure good contact with the back of the head, they are advantageously connected by passers-by 20 who limit their spacing.
  • the harness also includes at least one additional strap flexible, but not extensible or not very extensible 24, intended to be tightened on the helmet to apply more firmly the mask on the face.
  • the strap 24 shown on Figure 1 is in three parts connected by two fasteners 26 placed one on each side of the head and that the wearer mask can be easily adjusted to tighten the strap additional. These fasteners can for example have the constitution shown schematically in Figure 2.
  • the fastener then has an elongated metal plate 28 attached at the end of one of the parts of the additional strap 24.
  • the terminal portion of the other party constitutes a sliding loop around the plate 28 and ends by a free strand 30 on which it suffices to pull to tighten the additional strap 24.
  • this strap occupies a suitable location when tightening, it advantageously crosses the loops 20 which hold it between the two inflatable straps 16.
  • the harness is supplemented by a chin strap 32, adjustable or not, avoiding the risk of the helmet going up towards the eyes.
  • FIG. 3 where the bodies corresponding to those of FIG. 1 are designated by the same reference number
  • glasses 32 of smoke protection fitted with a retaining element clean 34, can be attached to the helmet independently of the harness.
  • the embodiment of Figure 4 includes, instead glasses, an eye screen 36 which is integrated into the mask, according to a provision comparable to that which is described in the (Design Patent) U.S. Des. 304,384.
  • FIG. 5 is differentiates from the previous one in that it includes not only an additional lateral strap 24, but also a strap upper 38 provided, like strap 24, with a fastener 40 allowing to stretch it if necessary.
  • the upper strap 38 ends by a hook 42 which can be fixed to the edge of the helmet.
  • the top strap 38 should be extended during storage, so as not to interfere with quick place.
  • This upper strap can also be installed transversely and be connected to the upper tube 16.
  • Figure 6 shows a possible constitution of such clip 44, consisting of a simple metal wire clip (spring steel for example) intended to maintain a buckle on one of the inflatable straps 16.
  • a simple metal wire clip spring steel for example
  • the middle part can be fixed permanently.
  • Fastener 44 can have many different shapes from that described as a simple example.
  • the clip consists of a plate 46 and studs 48 around which at least one of the tubes harness can be put on to increase tension and tightening on the head.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Description

L'invention concerne les équipements de protection respiratoire comportant un masque respiratoire, un harnais autorisant une mise en place rapide, et parfois des lunettes de protection contre les fumées intégrées ou non dans le masque.The invention relates to protective equipment respirator comprising a respiratory mask, a harness allowing rapid installation, and sometimes glasses smoke protection integrated or not in the mask.

On connaít déjà (EP-A-0 288 391) des équipements de protection à mise en place rapide, destinés notamment au personnel navigant technique des appareils de transport de passagers, ayant un masque respiratoire muni d'un régulateur destiné à être relié à une source de gaz respiratoire sous pression (généralement de l'oxygène sous pression) et un harnais ayant au moins une sangle extensible dont les extrémités sont reliées au masque et qui comporte un élément gonflable par le gaz sous pression pour allonger la sangle jusqu'à une dimension suffisante pour permettre à l'utilisateur d'engager le harnais sur la tête et vidangeable pour permettre à la sangle de se serrer, d'appliquer le masque contre le visage et de le maintenir en place. Le masque est muni d'un régulateur à la demande, avec dilution en général ; les masques peuvent être prévus pour être mis en surpression (ce qui exige que le harnais puisse exercer une traction sur le masque suffisante pour l'appliquer de façon sensiblement étanche sur le visage, en dépit de la surpression) ou non.We already know (EP-A-0 288 391) equipment quick-fitting protection, intended in particular for cabin crew technical aircraft transporters passengers with a breathing mask fitted with a regulator intended to be connected to a source of respiratory gas under pressure (usually oxygen under pressure) and a harness having at least one extensible strap whose ends are connected to the mask and which has an element inflatable with pressurized gas to lengthen the strap up to a size sufficient to allow the user to engage the harness on the head and drainable to allow the strap to tighten, apply the mask against the face and hold it in place. The mask is fitted with a demand regulator, with dilution in general ; the masks can be provided to be put on overpressure (which requires that the harness can exert enough traction on the mask to apply it so noticeably waterproof on the face, despite the overpressure) or not.

Les équipements existants du type ci-dessus sont difficilement utilisables par des membres d'équipage tenus de porter un casque et occupant une cabine pressurisée destinée à leur permettre de travailler, même à l'altitude maximale prévue pour l'avion, sans masque respiratoire alors que la mise en place rapide du masque est requise en cas de dépressurisation. Ce cas est notamment celui des équipages d'avions militaires autres que de combat (avions de transport, de reconnaissance, de patrouille, de servitude, de ravitaillement en vol par exemple) qui ont souvent à voler au-dessus d'un plafond qui les soumet aux risques de dépressurisation et/ou peuvent se trouver envahis par des fumées ou des gaz toxiques.Existing equipment of the above type is difficult to use by bound crew members wearing a helmet and occupying a pressurized cabin intended to allow them to work, even at altitude maximum planned for the plane, without respiratory mask then that rapid fitting of the mask is required in the event of depressurization. This case is particularly that of crews military aircraft other than combat aircraft (transport aircraft, reconnaissance, patrol, servitude, in-flight refueling) who often have to fly above a ceiling which subjects them to the risks of depressurization and / or may be overrun with toxic fumes or gases.

Un simple surdimensionnement du harnais gonflable d'un équipement du type actuellement connu, suffisant pour permettre de le passer aisément par-dessus un casque, n'est pas satisfaisant. En effet, la tension que devrait exercer le harnais pour obtenir l'étanchéité contre la face requise dans les conditions les plus défavorables de dépressurisation conduirait à un port du masque extrêmement inconfortable en dehors de cette situation. De plus, la tension exercée par un harnais gonflable, sauf si elle est si élevée que le port du masque est peu tolérable pendant des périodes importantes, est insuffisante pour garantir le maintien en place du masque dans des conditions exceptionnelles, telles qu'une évacuation de l'avion en vol.A simple oversizing of the inflatable harness of a equipment of the type currently known, sufficient for allow it to be easily worn over a helmet, is not not satisfying. Indeed, the tension that should exert the harness to obtain the required seal against the face under the most unfavorable conditions of depressurization would lead to extremely uncomfortable wearing of the mask outside of this situation. In addition, the tension exercised by an inflatable harness, unless it is so high that wearing a mask is not very tolerable for periods is insufficient to guarantee the maintenance in place the mask in exceptional conditions, such than an evacuation of the airplane in flight.

On connaít également des masques reliés au casque par une sangle réglable (EP-A-0 471 264) : ils ne permettent pas une mise en place rapide.We also know masks connected to the helmet by an adjustable strap (EP-A-0 471 264): they do not allow quick installation.

La présente invention vise à fournir un équipement de protection respiratoire, notamment contre l'hypoxie, du type ci-dessus défini, susceptible d'être mis en place sur un casque et permettant un port prolongé sans pour autant sacrifier à la sécurité.The present invention aims to provide equipment for respiratory protection, in particular against hypoxia, of the type above defined, likely to be implemented on a helmet and allowing extended wear without sacrifice for security.

Dans ce but l'invention propose un équipement caractérisé en ce que le harnais comporte de plus une sangle additionnelle souple, peu ou pas extensible, munie d'une attache à serrage direct manuel. On peut considérer comme peu extensible une attache dont la longueur ne varie pas de plus de quelques pour cent en fonction de sa tension.To this end, the invention provides a characterized equipment in that the harness also has a strap additional flexible, little or not extensible, provided with a manual direct clamping. We can consider as little stretch a fastener whose length does not vary from more than a few percent depending on its tension.

La sangle additionnelle de serrage peut être constituée par une simple lanière ou courroie en deux parties reliées par une attache déjà en place, pouvant être serrée par simple traction manuelle sur un brin en saillie. Pour éviter que la présence de la sangle supplémentaire ne gêne le passage du harnais sur le casque et n'entrave la mise en place rapide, la sangle supplémentaire est avantageusement reliée à la sangle ou aux sangles allongeables par gonflage, de façon à suivre leur mouvement.The additional tightening strap can be made by a simple strap or strap in two connected parts by a clip already in place, which can be tightened by simple manual pull on a protruding strand. To avoid that the presence of the additional strap does not hinder the passage of the harness on the helmet and does not interfere with quick place, the additional strap is advantageously connected to the strap or to the extendable straps by inflation, so as to follow their movement.

En particulier, lorsque le harnais comporte deux sangles gonflables constituant un V à partir de chaque point d'attache sur le masque, comme cela est décrit par exemple dans le document EP-A-0 288 391, la sangle additionnelle peut être placée entre les deux sangles gonflables et reliée à elles par des cordons répartis autour de la tête.In particular, when the harness has two straps inflatable forming a V from each attachment point on the mask, as described for example in the document EP-A-0 288 391, the additional strap can be placed between the two inflatable straps and connected to them by cords distributed around the head.

Des éléments supplémentaires peuvent être prévus pour renforcer le maintien du masque dans des situations exceptionnelles. En particulier, une mentonnière peut être prévue, réglable ou non. Une sangle supérieure passant au-dessus du casque, évitant le déplacement vers le bas du masque, par exemple en cas d'éjection, peut être prévue et équipée ou non de moyens de réglage du serrage.Additional elements may be provided for strengthen the maintenance of the mask in exceptional situations. In particular, a chin rest can be planned, adjustable or not. An upper strap passing over of the helmet, avoiding the downward displacement of the mask, for example in case of ejection, can be provided and equipped or not with means for adjusting the tightening.

Enfin, il est possible de prévoir l'équipement de façon que le membre d'équipage qui en est muni puisse, avant une mission, réduire sa longueur dans le cas où tout ou partie de la mission est accomplie sans port d'un casque.Finally, it is possible to plan the equipment in a way that the crew member who is provided with it may, before a mission, reduce its length in the event that all or part of the mission is accomplished without wearing a helmet.

Le masque peut être simplement oro-nasal, généralement avec une forme telle que des lunettes ou une visière puissent s'y appuyer pour protéger les yeux. Le masque peut aussi bien être complété par des lunettes d'une seule pièce avec le couvre-face.The mask can be simply oro-nasal, generally with a shape such as glasses or a visor can lean on it to protect the eyes. The mask can as well be complemented by one piece glasses with the face cover.

L'invention sera mieux comprise à la lecture de la description qui suit de modes particuliers de réalisation, donnés à titre d'exemples non limitatifs. La description se réfère aux dessins qui l'accompagnent, dans lesquels :

  • la figure 1 est une vue en perspective montrant l'aspect extérieur d'un équipement de protection conforme à un premier mode de réalisation de l'invention ;
  • la figure 2 montre une constitution possible d'une attache à serrage rapide pouvant être prévue sur la sangle additionnelle unique de l'équipement de la figure 1 ;
  • les figures 3, 4 et 5, similaires à la figure 1, montrent des variantes de réalisation ;
  • les figures 6 et 7 montrent des constitutions possibles d'un élément supplémentaire permettant de diminuer temporairement la longueur du harnais, en vue d'une mission n'exigeant pas le port de casque.
The invention will be better understood on reading the following description of particular embodiments, given by way of nonlimiting examples. The description refers to the accompanying drawings, in which:
  • Figure 1 is a perspective view showing the external appearance of protective equipment according to a first embodiment of the invention;
  • Figure 2 shows a possible constitution of a quick-release fastener which can be provided on the single additional strap of the equipment of Figure 1;
  • Figures 3, 4 and 5, similar to Figure 1, show alternative embodiments;
  • Figures 6 and 7 show possible constitutions of an additional element to temporarily reduce the length of the harness, for a mission not requiring the wearing of helmet.

L'équipement respiratoire de secours montré, sur la figure 1, dans la position où il se trouve sur la tête d'un utilisateur lors de l'emploi, peut être regardé comme comportant un masque 8 et un harnais 10. Le masque représenté a un couvre-face oro-nasal fixé à un régulateur à la demande 13 et à un bloc de connexion rigide 12. Le bloc de connexion est muni d'un raccord de liaison avec une conduite flexible 14 destinée à se raccorder à une source de gaz respiratoire sous pression (oxygène sous pression en général). Le harnais représenté à titre d'exemple comporte deux sangles 16 constituées chacune d'un tube interne en matériau élastique contenu dans une gaine inextensible limitant l'allongement du tube. La longueur au repos des tubes internes est telle qu'ils tendent à appliquer le couvre-face sur le visage avec la force nécessaire pour assurer l'étanchéité requise, même lorsque le masque est soumis à une surpression respiratoire.The emergency breathing equipment shown on the figure 1, in the position where it is on the head of a user during use, can be viewed as comprising a mask 8 and a harness 10. The mask shown has an oro-nasal face cover attached to a regulator at the request 13 and to a rigid connection block 12. The block of connection is provided with a connection fitting with a pipe flexible 14 intended to be connected to a gas source pressurized breathing (pressurized oxygen in general). The harness shown by way of example comprises two straps 16 each consisting of an inner tube in elastic material contained in an inextensible sheath limiting the elongation of the tube. The length at rest of internal tubes is such that they tend to apply the face cover on the face with the force necessary to ensure the required seal, even when the mask is subject to respiratory overpressure.

Suivant l'utilisation prévue pour l'équipement, le régulateur sera avec ou sans dilution par de l'air aspiré dans la cabine, avec ou sans possibilité de mise en surpression.Depending on the intended use of the equipment, the regulator will be with or without dilution by aspirated air in the cabin, with or without the possibility of overpressure.

Le régulateur est mis en liaison avec la conduite d'alimentation 14 par le bloc de connexion 12. Ce bloc porte des moyens à commande manuelle de gonflage des sangles 16, constitués par exemple par un robinet prévu pour être actionné par pincement manuel de deux oreilles 18 portées par le bloc de connexion 12 et dont l'une est basculante. The regulator is connected to the pipe supply 14 by the connection block 12. This block carries means for manually controlling the inflation of the straps 16, constituted for example by a tap intended to be actuated by manual pinching of two ears 18 carried by the connection block 12 and one of which is tiltable.

Le robinet est constitué de façon à mettre en communication un volume intérieur du bloc de connexion 12 et les sangles 16 avec l'atmosphère lorsqu'il est libre. Il permet alors aux sangles de se rétracter et d'appliquer le masque contre le visage. Lorsque le robinet est actionné, il admet au contraire du gaz sous pression en provenance de la conduite d'alimentation 14 dans le volume et provoque un allongement suffisant des sangles pour permettre la mise en place rapide. Pour que les sangles, lorsqu'elles se rétractent, assurent un bon contact avec l'arrière de la tête, elles sont avantageusement reliées par des passants 20 qui limitent leur écartement.The tap is constructed so as to put in communication an internal volume of the connection block 12 and the 16 straps with the atmosphere when free. It allows then the straps to retract and apply the mask against the face. When the tap is turned on, it admits unlike pressurized gas from the supply line 14 in the volume and causes a sufficient lengthening of the straps to allow quick place. So that the straps, when they retract, ensure good contact with the back of the head, they are advantageously connected by passers-by 20 who limit their spacing.

La disposition décrite jusqu'ici est connue. On pourra par exemple en trouver une description dans le document EP-A-0 288 391. Toutefois, la longueur des gaines est telle que ces gaines autorisent le passage du harnais au-dessus des casques de toutes tailles.The arrangement described so far is known. We will be able to for example find a description in document EP-A-0 288 391. However, the length of the sheaths is such that these sleeves allow the passage of the harness over the helmets of all sizes.

Le harnais comprend de plus au moins une sangle additionnelle souple, mais non extensible ou peu extensible 24, destinée à être serrée sur le casque pour appliquer plus fermement le masque sur le visage. La sangle 24 montrée sur la figure 1 est en trois parties reliées par deux attaches 26 placées une de chaque côté de la tête et que le porteur du masque peut ajuster aisément de façon à serrer la sangle additionnelle. Ces attaches peuvent par exemple avoir la constitution montrée schématiquement en figure 2. L'attache comporte alors une plaquette métallique allongée 28 accrochée à l'extrémité d'une des parties de la sangle additionnelle 24. La fraction terminale de l'autre partie constitue une boucle coulissant autour de la plaque 28 et se termine par un brin libre 30 sur lequel il suffit de tirer pour serrer la sangle additionnelle 24.The harness also includes at least one additional strap flexible, but not extensible or not very extensible 24, intended to be tightened on the helmet to apply more firmly the mask on the face. The strap 24 shown on Figure 1 is in three parts connected by two fasteners 26 placed one on each side of the head and that the wearer mask can be easily adjusted to tighten the strap additional. These fasteners can for example have the constitution shown schematically in Figure 2. The fastener then has an elongated metal plate 28 attached at the end of one of the parts of the additional strap 24. The terminal portion of the other party constitutes a sliding loop around the plate 28 and ends by a free strand 30 on which it suffices to pull to tighten the additional strap 24.

Pour que cette sangle occupe un emplacement convenable au serrage, elle traverse avantageusement les passants 20 qui la maintiennent entre les deux sangles gonflables 16. So that this strap occupies a suitable location when tightening, it advantageously crosses the loops 20 which hold it between the two inflatable straps 16.

Dans le cas illustré sur la figure 1, le harnais est complété par une mentonnière 32, réglable ou non, évitant le risque de-remontée du casque vers les yeux.In the case illustrated in Figure 1, the harness is supplemented by a chin strap 32, adjustable or not, avoiding the risk of the helmet going up towards the eyes.

En dehors des périodes où le harnais doit être bloqué sur le casque par suite d'un risque d'arrachement ou de décollement, le fonctionnement est le même que celui d'un équipement à mise en place rapide de type connu, si ce n'est que la sangle 24, généralement en tissu, doit être suffisamment longue pour ne pas gêner la mise en place. En cas de situation exigeant un maintien énergique et l'absence de tout décollement, il suffit au porteur de l'équipement de tirer sur les brins libres 30 jusqu'à obtention de la tension désirée.Outside periods when the harness must be blocked on the helmet due to a risk of tearing off or detachment, the operation is the same as that of a known type quick-set equipment, if not that the strap 24, generally made of fabric, must be sufficiently long so as not to hinder the installation. In case of situation requiring energetic maintenance and the absence of any detachment, the wearer of the equipment need only pull on the free strands 30 until the desired tension.

La variante de réalisation montrée en figure 3 (où les organes correspondant à ceux de la figure 1 sont désignés par le même numéro de référence) comporte des lunettes 32 de protection contre les fumées, munies d'un élément de retenue propre 34, serrable sur le casque indépendamment du harnais.The variant embodiment shown in FIG. 3 (where the bodies corresponding to those of FIG. 1 are designated by the same reference number) has glasses 32 of smoke protection, fitted with a retaining element clean 34, can be attached to the helmet independently of the harness.

Le mode de réalisation de la figure 4 comporte, au lieu de lunettes, un écran oculaire 36 qui est intégré au masque, suivant une disposition comparable à celle qui est décrite dans le modèle (Design Patent) U.S. Des. 304 384.The embodiment of Figure 4 includes, instead glasses, an eye screen 36 which is integrated into the mask, according to a provision comparable to that which is described in the (Design Patent) U.S. Des. 304,384.

Enfin, le mode de réalisation montré en figure 5 se différencie du précédent en ce qu'il comporte non seulement une sangle additionnelle latérale 24, mais aussi une sangle supérieure 38 munie, comme la sangle 24, d'une attache 40 permettant de la tendre en cas de nécessité. Dans le cas illustré sur la figure 5, la sangle supérieure 38 se termine par un crochet 42 que l'on peut fixer à l'arête du casque. Comme la sangle 24, la sangle supérieure 38 doit être allongée lors du stockage, pour ne pas gêner la mise en place rapide. Cette sangle supérieure peut aussi être installée transversalement et être reliée au tube supérieur 16.Finally, the embodiment shown in FIG. 5 is differentiates from the previous one in that it includes not only an additional lateral strap 24, but also a strap upper 38 provided, like strap 24, with a fastener 40 allowing to stretch it if necessary. In the case illustrated in Figure 5, the upper strap 38 ends by a hook 42 which can be fixed to the edge of the helmet. Like strap 24, the top strap 38 should be extended during storage, so as not to interfere with quick place. This upper strap can also be installed transversely and be connected to the upper tube 16.

Certaines missions permettent aux membres d'équipage de ne porter que temporairement un casque, alors que des incidents peuvent entraíner la nécessité de mettre rapidement en place l'équipement respiratoire. Dans ce cas, il est possible de munir le harnais d'une attache aisément enlevable raccourcissant provisoirement la longueur d'une au moins des sangles.Some missions allow crew members to only wear a helmet temporarily, while incidents may result in the need to quickly put respiratory equipment. In this case, it is possible to provide the harness with an easily removable fastener temporarily shortening the length of at least one straps.

La figure 6 montre une constitution possible d'une telle attache 44, constituée par une simple agrafe en fil métallique (acier à ressort par exemple) destinée à maintenir une boucle sur l'une des sangles gonflables 16. Avant la mission n'impliquant pas l'emploi permanent du casque, il suffit à l'utilisateur de mettre en place l'agrafe 44 qui peut être aisément et rapidement extraite en séparant ses deux extrémités, la partie médiane pouvant être fixée à demeure.Figure 6 shows a possible constitution of such clip 44, consisting of a simple metal wire clip (spring steel for example) intended to maintain a buckle on one of the inflatable straps 16. Before the mission does not involve the permanent use of the helmet, it suffices to the user to set up clip 44 which can be easily and quickly extracted by separating its two ends, the middle part can be fixed permanently.

L'attache 44 peut avoir de nombreuses formes différentes de celle décrite à titre de simple exemple.Fastener 44 can have many different shapes from that described as a simple example.

Une autre constitution possible de l'attache est représentée figure 7 : l'attache est composée d'une plaque 46 et de plots 48 autour desquels au moins un des tubes de harnais peut être passé pour augmenter ainsi la tension et le serrage sur la tête.Another possible constitution of the fastener is shown in figure 7: the clip consists of a plate 46 and studs 48 around which at least one of the tubes harness can be put on to increase tension and tightening on the head.

Claims (7)

  1. Fast donning respiratory protection apparatus, comprising a breathing mask (8) provided with a regulator arranged for connection to a source of pressurized breathable gas and a harness (10) having at least one stretchable strap (16) having ends connected to the mask and including an element which is inflatable by said pressurized gas to extend the strap up to a size which is sufficient to permit fitting of the harness on the head and is deflatable to enable the strap to tighten, to bias the mask onto the face and to hold the mask in position, characterized in that the harness (10) further comprises a flexible additional strap, not or hardly extensible, (24) having a fastener (26) for direct manual tightening.
  2. Apparatus according to claim 1, characterized in that the additional tightening strap comprises a band or strip in two sections connected by the fastener (26) which is so constructed as to be apt to be tightened upon a manual pulling on a free end (30) of the additional strap.
  3. Apparatus according to claim 2, wherein said additional strap (24) is connected to the stretchable strap or straps, whereby it follows movements thereof.
  4. Apparatus according to claim 3, whose harness has two said stretchable straps forming a V from each point of attachment on the mask, characterized in that the additional strap is located between the two stretchable straps and connected to the latter by cords or bands distributed around the head.
  5. Apparatus according to any one of the preceding claims, characterized in that it further comprises a chin strap.
  6. Apparatus according to any one of the preceding claims, characterized in that it further comprises a higher band located above the helmet, of a material which is not or hardly stretchable, also provided with a fastener (40) for manual adjustment.
  7. Apparatus according to any one of the preceding claims, characterized in that it further comprises means for shortening the maximum length of the harness at will.
EP94402080A 1993-09-23 1994-09-19 Respiratory protection equipment with rapid positioning Expired - Lifetime EP0645164B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311342 1993-09-23
FR9311342A FR2710272B1 (en) 1993-09-23 1993-09-23 Quick-fitting respiratory protection equipment.

Publications (2)

Publication Number Publication Date
EP0645164A1 EP0645164A1 (en) 1995-03-29
EP0645164B1 true EP0645164B1 (en) 1999-03-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402080A Expired - Lifetime EP0645164B1 (en) 1993-09-23 1994-09-19 Respiratory protection equipment with rapid positioning

Country Status (5)

Country Link
US (1) US5488948A (en)
EP (1) EP0645164B1 (en)
DE (1) DE69417325T2 (en)
ES (1) ES2129603T3 (en)
FR (1) FR2710272B1 (en)

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Also Published As

Publication number Publication date
FR2710272B1 (en) 1995-12-01
ES2129603T3 (en) 1999-06-16
FR2710272A1 (en) 1995-03-31
DE69417325T2 (en) 1999-11-04
EP0645164A1 (en) 1995-03-29
US5488948A (en) 1996-02-06
DE69417325D1 (en) 1999-04-29

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