EP0578808B1 - Individuelle atemausruestung und schuetzende ausruestung gegen die mit schadstoffen beladene atmosphaere - Google Patents

Individuelle atemausruestung und schuetzende ausruestung gegen die mit schadstoffen beladene atmosphaere Download PDF

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Publication number
EP0578808B1
EP0578808B1 EP93904142A EP93904142A EP0578808B1 EP 0578808 B1 EP0578808 B1 EP 0578808B1 EP 93904142 A EP93904142 A EP 93904142A EP 93904142 A EP93904142 A EP 93904142A EP 0578808 B1 EP0578808 B1 EP 0578808B1
Authority
EP
European Patent Office
Prior art keywords
hood
helmet
web
mask
equipment according
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
Application number
EP93904142A
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English (en)
French (fr)
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EP0578808A1 (de
Inventor
Robert Schegerin
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.)
Safran Aerosystems SAS
Original Assignee
Intertechnique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intertechnique SA filed Critical Intertechnique SA
Publication of EP0578808A1 publication Critical patent/EP0578808A1/de
Application granted granted Critical
Publication of EP0578808B1 publication Critical patent/EP0578808B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/04—Hoods
    • 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

Definitions

  • the subject of the invention is personal protective equipment in an environment likely to present contamination of nuclear, biological or chemical origin, so-called NBC protective equipment.
  • a helmet having a rigid shell and internal padding, a hood intended to separate the head from the atmosphere and advantageously provided with means of supplying ventilation air, intended to be donned directly on the skin, and an oro-nasal respiratory mask provided with a conduit for connection to an external source of breathable gas and means of attachment to the helmet.
  • the present invention aims in particular to provide respiratory equipment of the above type spreading or at least reducing the discomfort.
  • the invention notably proposes an equipment in which the hood comprises an envelope in which is formed at least one opening intended to be placed in front of the wearer's eyes and a removable transparent telescope provided with means of attachment to the hood and / or on the helmet in a position where its edges apply tightly to the envelope around the opening.
  • attachment means on the rigid shell of the helmet which can be of constitution similar to that of the means of attachment of the respiratory mask to the helmet, except that it is not necessary that they have such a large amplitude of adjustment.
  • These means can be pierced with a ventilation air supply duct and / or air extraction channel, so as to sweep the internal surface of the telescope with demisting air.
  • the bezel is provided to be placed inside the envelope. In return, the introduction of the visor through the opening and its correct positioning are more difficult than in the previous case.
  • a detachable telescope already significantly improves the comfort of the wearer of the hood. It is however particularly advantageous to also provide, in the envelope, an opening intended to allow the respiratory mask to be introduced from the outside and to apply it in a sealed manner against the face, without losing the sealing of the hood. This result can be achieved without major difficulty using a hood of elastic material, such as neoprene, provided, around the opening for receiving the mask, sealing means intended to be applied to the rigid shell which generally covers the front part of the covers the face of the mask or constitutes it.
  • a hood of elastic material such as neoprene
  • the junction between envelope and mask can in particular be made watertight by providing the envelope of the hood, along the opening for receiving the mask, by means such as a bead, a lip seal, or an inflatable seal. seal intended to fit into a circumferential groove provided on the mask shell.
  • the mask can be left simply suspended from one of its straps in the absence of risk of contamination (and in the event of flights at low altitude when the equipment is intended for aircraft).
  • the safety of the wearer is not however degraded, because it is currently accepted that the personnel can be informed of a risk of contamination early enough so that they have time to ensure their safety. protection by fitting the telescope and possibly the mask, in the case where it uses equipment according to the present invention.
  • the respiratory equipment shown schematically in Figures 1 to 6 comprises, in a conventional manner, a helmet 10 consisting of a shell and an inner padding.
  • the shell of the helmet 10 carries receptacles 14 intended to receive the fasteners 16 for fixing a respiratory mask 18.
  • This mask has, in a conventional manner, a rigid shell 20, carrying a conduit 22 for connection with a supply line for breathable gas and a face cover 24 having a sealing lip.
  • the equipment includes a hood 26, used or not depending on the type of mission.
  • the fasteners can in particular have the constitution described in the document FR-A-88 04 616.
  • the supply line can for example be connected, when using the equipment, to a demand regulator, such as that described in document EP-A-0 153 247.
  • the shell of the helmet 10 is made of rigid molded material and can have any of the constitutions known at present. It can be provided with one or more visors 12, movable between a retracted position where they are shown in FIG. 1 in a low position.
  • the hood 26 is intended to be worn directly on the head, under the helmet 10.
  • the hood according to the invention comprises on the one hand an envelope 28 made of a flexible and waterproof material, on the other hand a bezel 30, intended to be removably fix on the envelope and seal an opening in the envelope in front of the wearer's eyes.
  • the hood may be entirely of a material, such as a vinyl derivative, which is flexible but not very extensible, entirely of a material having a certain elasticity, such as neoprene, or composite, that is to say in several different materials depending on the location.
  • a material such as a vinyl derivative, which is flexible but not very extensible, entirely of a material having a certain elasticity, such as neoprene, or composite, that is to say in several different materials depending on the location.
  • Several sizes of hood can be provided to adapt to the morphology of different wearers.
  • the envelope may have an internal collar folded upwards intended to constitute a neck seal. However, since the hood will often be worn at the same time as a protective garment, it will suffice to provide it with a plastron 32 (FIG. 1).
  • the hood of the hood also has an opening making it possible to introduce, from the outside, the respiratory mask 18 and to apply the face cover 24 against the face, around the nose and the mouth, the opening having a dimension such that its edge is then applied sealingly against the shell 20 of the mask.
  • Most of the shell 20 and the fastening means 16 remain outside the hood: the fasteners 16, formed by bayonets in the illustrated case, can consequently be engaged without difficulty in the receptacles 14 provided on the helmet shell 10.
  • the envelope In order to fulfill the double condition that the face cover 24 can be inserted into the envelope and that there is a tight contact after introduction, the envelope must, at least in the part surrounding the opening, be made of elastic material.
  • the part of the envelope which is outside the helmet must be made of a material impermeable to contamination. This condition is however not necessary for the part of the envelope which is covered by the helmet.
  • This last part can therefore be made of a material whose contact with the skin is better supported than elastomers or synthetic materials, for example textile material.
  • the bezel 30 is intended to be placed outside the envelope 28. It is constituted by a flexible sheet of transparent and impermeable material, such as a polymethacrylate, bearing on its inner face a seal 34 and which is extended by two fasteners 36 which may be constituted by racks.
  • the envelope 28 has on its side a thickened border 38 delimiting the opening covered by the telescope and intended to constitute the sealing zone. It is often preferable to place, under the border 38, a reinforcement 40 locally stiffening the envelope so as to improve the seal and which can, moreover, have a variable thickness to compensate for the irregularities of the face.
  • the racks can be provided to engage in receptacles (not shown) formed on the outer shell of the helmet.
  • the two attachment methods can be combined, the attachment to the envelope ensuring correct positioning and being supplemented by the attachment to the helmet shell which makes it possible to withstand the forces due to the overpressure of the hood.
  • the opening for receiving the mask can be delimited by a sealing bead 42 which snaps into a circumferential groove provided for this purpose on the shell. This snap-in prevents a loss of tightness by pushing back the edge of the opening in the event of pressurization of the hood.
  • the variant embodiment shown in FIG. 3 (where the elements corresponding to those of FIGS. 1 and 2 are designated by the same reference number) comprises an envelope having a fold 44 surrounding the edge of the opening for receiving the mask.
  • the part of the envelope which comprises the fold 44 has a thickness e1 smaller than the thickness e2 of the rest of the envelope, so as to further increase the additional flexibility given by the fold and to improve the adaptation of the shell envelope 20.
  • Several successive folds can be provided instead of just one.
  • the support sealing of the face cover can be produced, as in the case of FIGS. 1 and 2, by a thin internal terminal fold 46 of the face covering.
  • Figure 4 where the elements already shown are designated by the same reference number, shows a hood in which the bezel 30 is provided with a border 48, for example of elastomer, internally carrying a seal 50 which can in particular be a lip seal or even an inflatable seal, which can be supplied by means which will be described later.
  • This border can be extended by lugs 36a intended to be hooked, for example by snap-fastening, on bulges provided on the envelope of the hood.
  • the envelope shown comprises, like that of FIG. 2, a neck seal 52.
  • FIG. 5 shows the hood and the mask of an equipment in which the telescope 30 and the mask 18 are both fixed to the helmet by means of racks allowing pressure adjustment on the face and adaptation to the morphology of the wearer.
  • racks allowing pressure adjustment on the face and adaptation to the morphology of the wearer.
  • the use of such racks has the advantage that the wearer can initially put the racks in a position of simple hooking and push them in completely to guarantee sealing only in the event of danger, this operation being able to be carried out with one hand.
  • Other fixing methods are however possible.
  • the bezel can for example be provided to hang all around the opening, while remaining provided with racks or lugs.
  • racks 36 for attachment to the helmet shell makes it possible to generate a circulation of sweeping and demisting air and / or supplying an inflatable seal. It is indeed possible to provide an air supply channel 54 in one or the other of the racks. The air can be exhausted from inside the hood. There can also be air return by a channel provided in one of the racks. The supply can be carried out either from the mask supply regulator, by a flexible tube of small diameter, or from the supply of the anti-g valve, when the pilot's protective equipment comprises a such valve.
  • the invention is susceptible of many other alternative embodiments.
  • one or more of the seals must be of the inflatable and feedable type as soon as the regulator is put into service at the request for supplying the mask.
  • the hooking devices may be different from those which have been shown by way of example. It is finally possible to provide, at least in the part of the envelope which covers the scalp, internal grooves allowing air circulation to evacuate perspiration.

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

Claims (8)

  1. Individuelle Atemausrüstung und schützende Ausrüstung, umfassend einen Helm (10) mit einer starren Schale und einer inneren Polsterung, einer Kapuze (26), die dazu bestimmt ist, den Kopf von der Umgebungsluft zu trennen, und die in vorteilhafter Weise mit einer Belüftungsvorrichtung versehen und dazu bestimmt ist, direkt auf der Haut getragen zu werden, und eine oronasale Atemmaske (20), die mit einer Verbindungsleitung (22) zu einer externen Atemluftquelle und mit einer Vorrichtung zur Befestigung (16) am Helm versehen ist, wobei die Kapuze eine Hülle (28), in der wenigstens eine Öffnung, die dazu bestimmt ist, vor den Augen des Trägers angeordnet zu werden, vorgesehen ist, und ein transpartentes Sichtglas (30) umfaßt, dadurch gekennzeichnet, daß, das transparente Sichtglas mittels einer Befestigungsvorrichtung (36, 36a) starr an der Kapuze und/oder an dem Helm in einer Position, in der seine Ränder dichtend auf der Hülle um die Öffnung herum verlaufen, befestigt ist.
  2. Ausrüstung nach Anspruch 1, dadurch gekennzeichnet, daß das Sichtglas (30) auf der Außenseite der Hülle (28) angeordnet und mit durch Zahnleisten (36) gebildeten Befestigungsvorrichtungen an der starren Schale des Helms (10) versehen ist.
  3. Ausrüstung nach Anspruch 2, dadurch gekennzeichnet, daß die Befestigungsvorrichtungen für das Sichtglas von einem Zuleitungs- und möglicherweise -ableitungskanal (54) für Gebläseluft durchstochen sind.
  4. Ausrüstung nach Anspruch 1, dadurch gekennzeichnet, daß die Hülle (28) eine Öffnung zum Einführen der Atemmaske (18) von außen her und Dichtvorrichtungen, die zum Anbringen auf einer starren Schale (20) der Maske bestimmt sind, aufweist.
  5. Ausrüstung nach Anspruch 4, dadurch gekennzeichnet, daß die Hülle der Kapuze (28) entlang der Maskenaufnahmeöffnung mit Dichtvorrichtungen, wie etwa einem Wulst (42), einer Lippendichtung oder einer aufbalsbaren Dichtung, versehen ist.
  6. Ausrüstung nach Anspruch 5, dadurch gekennzeichnet, daß die Dichtvorrichtungen in einer in der Schale (20) der Maske vorgesehenen Umfangsnut eingepaßt sind.
  7. Ausrüstung nach Anspruch 1, dadurch gekennzeichnet, daß die Hülle der Kapuze (26) aus für die Verseuchung undurchdringlichem Material alleinig in dem der über der Helmpolsterung gelegenen Teil gebildet ist.
  8. Ausrüstung nach Anspruch 7, dadurch gekennzeichnet, daß die Hülle (28) wenigstens in dem über der Helmpolsterung gelegenen Teil aus elastisch dehnbarem Material, wie etwa Neopren, gebildet ist.
EP93904142A 1992-01-30 1993-01-29 Individuelle atemausruestung und schuetzende ausruestung gegen die mit schadstoffen beladene atmosphaere Expired - Lifetime EP0578808B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9201017 1992-01-30
FR9201017A FR2686795B1 (fr) 1992-01-30 1992-01-30 Equipement individuel respiratoire et de protection en ambiance contaminee.
PCT/FR1993/000100 WO1993014818A1 (fr) 1992-01-30 1993-01-29 Equipement individuel respiratoire et de protection en ambiance contaminee

Publications (2)

Publication Number Publication Date
EP0578808A1 EP0578808A1 (de) 1994-01-19
EP0578808B1 true EP0578808B1 (de) 1996-09-11

Family

ID=9426155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93904142A Expired - Lifetime EP0578808B1 (de) 1992-01-30 1993-01-29 Individuelle atemausruestung und schuetzende ausruestung gegen die mit schadstoffen beladene atmosphaere

Country Status (5)

Country Link
US (1) US5653225A (de)
EP (1) EP0578808B1 (de)
DE (1) DE69304629T2 (de)
FR (1) FR2686795B1 (de)
WO (1) WO1993014818A1 (de)

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Also Published As

Publication number Publication date
EP0578808A1 (de) 1994-01-19
DE69304629D1 (de) 1996-10-17
FR2686795A1 (fr) 1993-08-06
WO1993014818A1 (fr) 1993-08-05
US5653225A (en) 1997-08-05
FR2686795B1 (fr) 1996-07-05
DE69304629T2 (de) 1997-04-03

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