EP1077743B1 - Atemschutzgerät zum schnellen anziehen - Google Patents

Atemschutzgerät zum schnellen anziehen Download PDF

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Publication number
EP1077743B1
EP1077743B1 EP99918026A EP99918026A EP1077743B1 EP 1077743 B1 EP1077743 B1 EP 1077743B1 EP 99918026 A EP99918026 A EP 99918026A EP 99918026 A EP99918026 A EP 99918026A EP 1077743 B1 EP1077743 B1 EP 1077743B1
Authority
EP
European Patent Office
Prior art keywords
strap
face
rack
compartment
mask
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
EP99918026A
Other languages
English (en)
French (fr)
Other versions
EP1077743A1 (de
Inventor
Patrice Martinez
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 EP1077743A1 publication Critical patent/EP1077743A1/de
Application granted granted Critical
Publication of EP1077743B1 publication Critical patent/EP1077743B1/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
    • 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 breathing device including a breathing mask, a harness allowing rapid installation on the face and sometimes smoke goggles, integrated or no to the mask.
  • the present invention aims in particular to provide a respiratory protection equipment ensuring comfort less equivalent to that of existing equipment during mask wearing periods when there is no need to apply it enough on the face to withstand overpressure of respiratory gas and reduce consumption breathing gas during these times.
  • the invention notably proposes equipment of the kind defined above, the extensible strap of which is connected to the face cover by at least one mechanical member of length adjustable in steps by the user while wearing equipment.
  • This mechanical member can be constituted by a rack attached to one end of the strap and a ratchet worn by the face cover, allowing the relative movement of the strap and cover in the tightening direction, the ratchet being disarmable to allow movement of the rack in the opposite direction. This provision can be reversed, the rack is then fixed to the face cover.
  • the pneumatic connection between the face cover, which carries the user-controllable means for supplying the inflatable element, and this inflatable element is provided for allow relative sliding. So that the command of inflation causes the rack to come into position maximum tightening, this can be achieved by extending the rack by a hollow piston movable in a cylinder secured to the face cover. The piston then separates the cylinder in two compartments, one of which is connected to the supply of the inflatable element and the other to the atmosphere.
  • Protective equipment can be supplemented by a aneroide capsule constituting an altimetric detector and automatically causing the compartment to pressurize of the cylinder causing maximum tightening in the event of ambient depressurization.
  • Respiratory rescue equipment shown in the figure 1 shown in the state it is in when the harness is inflated can be viewed as having a mask 8 and a harness 10.
  • the mask shown has an oro-nasal face cover attached to a demand regulator 13 and a block of rigid connection 12.
  • the connection block is provided with a connection fitting with a flexible pipe 14 intended for connect to a source of pressurized breathing gas (oxygen in general).
  • the harness shown has two straps 16 each consisting of an inner tube 17 in one material allowing the tube to lengthen, contained in a inextensible sheath 19 limiting the elongation of the tube (fig. 2).
  • the regulator will be with or without dilution by air drawn into the cabin, with or without possibility of overpressure.
  • the regulator is connected to the pipe supply 14 by the connection block 12.
  • the door block 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, which then allows the straps to retract and apply the mask against the face.
  • the tap When the tap is turned on, it on the contrary admits gas under pressure coming from the supply line 14 in the interior volume, which causes sufficient lengthening of the straps to allow quick installation.
  • At least one of the branches of the harness is connected to the demand regulator via a mechanical length adjusting member.
  • a mechanical length adjusting member In the case illustrated in FIG. 1, two members 20 are provided, each connecting one end of the harness to the regulator or to the connection block.
  • the length of the inner tube 17 to the relaxed state is chosen so that the harness applies still the mask on the face with sufficient pressure when the adjusting member has its minimum length, even on carriers with the lowest head circumference planned. It is generally accepted that this minimum head circumference is 56 cm.
  • the tap for fully inflating or emptying the harness can have the classical constitution shown in figure 2.
  • One end of the passage is connected to the arrival of pressurized breathing gas.
  • the other end opens to the atmosphere.
  • a first O-ring 26 carried by the plunger 24 rests on a cylindrical portion of the passage 22 and separates the gas supply from an interior volume of the block when the plunger 24 is held by the inlet pressure resting against the ear 18 in the rest position.
  • the displacement of the diver brings a second O-ring 28 in abutment against a portion section of the passage and separates the interior volume from the atmosphere.
  • the adjusting member 20 comprises a rack 30 extended by a tip 32 on which is fixed so seals the end of the harness. Opposite the end piece 32, the rack is extended by an annular piston 34.
  • the portion of the adjusting member capable of sliding relative to the rack is formed by an arm of the case 12 which houses a rack ratchet 36 provided with a unlocking button 38.
  • a spring 40 pushes the ratchet 36 towards a position where it engages on the rack 30 and prohibits the movement of the latter in a direction corresponding to the elongation of the adjusting member.
  • the arm of the housing is also formed a cylinder that the annular piston 34 separates a compartment 42 connected to the atmosphere through an orifice 44 and a second compartment 46.
  • the internal volume of the tap communicates with the tube 17 through aligned holes in the arm of the housing, in the rack 30 and in the end piece 32.
  • a path 47 balances the pressure in the compartment 46 and the pressure in the harness.
  • O-rings carried by the piston 34 sealingly separate the compartments 42 and 46.
  • FIG. 3 shows an alternative embodiment causing maximum tightening in the case of depressurization.
  • the emergency tightening is caused by pressurization of the compartment 46 using a barometric capsule 52.
  • This capsule is subjected to ambient pressure.
  • She is provided a push rod 54 which causes the forced opening of a valve 56 when the ambient pressure drops below of a predetermined value.
  • the valve 56 then sets communication of pressurized breathing gas with compartment 46 connected to the atmosphere by a throttle 58 allowing then to cause slow deflation compartment 46.
  • a non-return valve 60 connects the downstream of the valve 56 to the internal volume of the housing 12 and to the harness, for avoid discharging in the open air.
  • the capsule In the event of depressurization while the rack is in the intermediate position, the capsule causes the setting pressure of compartment 46 and complete resetting of the rack. Throttle 58 does not allow pressure to lower in compartment 46 only from the moment it is no longer supplied by valve 56. The non-return valve 60 for its part prevents the flow to the open air when putting in in pressure of compartment 46.

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Massaging Devices (AREA)
  • Medicines Containing Plant Substances (AREA)
  • External Artificial Organs (AREA)
  • Telephone Function (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Claims (7)

  1. Atemschutzvorrichtung mit einer Atemmaske, die versehen ist mit einem Regler, der mit einer Quelle eines Atmungs-Druckgases (im Allgemeinen Sauerstoff) verbunden werden kann, und mit einem Harnisch, der wenigstens einen dehnbaren Riemen aufweist, dessen Enden mit der Maske verbunden sind, und die ein Element (17) umfasst, das durch das Druckgas zeitweise aufblasbar ist, um den Riemen bis auf eine Abmessung zu längen, die ausreicht, dass ein Benutzer den Harnisch auf den Kopf setzen kann, und entleerbar ist, damit sich der Riemen zusammen ziehen kann, um die Maske gegen das Gesicht zu drücken und an Ort und Stelle zu halten,
    dadurch gekennzeichnet, dass der dehnbare Riemen durch wenigstens eine mechanische Einrichtung (20) von durch den Benutzer während des Tragens der Vorrichtung stufenweise einstellbarer Länge mit der Kopffläche verbunden ist.
  2. Vorrichtung nach Anspruch 1,
    dadurch gekennzeichnet, dass die mechanische Einrichtung eine an einem Ende des Riemens befestigte Zahnstange (30) und eine an der Abdeckfläche abgestützte Sperrklinke (36) aufweist, welche die Relativverstellung zwischen dem Riemen und der Abdeckfläche in der Einspannrichtung zulassen, wobei die Sperrklinke entsicherbar ist, um die Verstellung der Zahnstange in der der Klemmfesstellung entgegengesetzten Richtung zuzulassen.
  3. Vorrichtung nach Anspruch 2,
    dadurch gekennzeichnet, dass die Sperrklinke mit Hilfe eines Drückers (38) entsicherbar ist, der gegen eine Feder (40) wirkt.
  4. Vorrichtung nach Anspruch 2 oder 3,
    dadurch gekennzeichnet, dass die Zahnstange durch einen hohlen Ringkolben (34) verlängert ist, der in einem fest mit der Abdeckfläche verbundenen Zylinder verschiebbar ist, wobei der Kolben den Zylinder in zwei Teilräume unterteilt, wobei der erste mit einer Versorgungseinrichtung für das aufblasbare Element verbunden ist und der andere mit einer kalibrierten Austrittsöffnung an die Umgebung versehen ist, wobei die unter Druck Setzung des ersten Teilraumes die Verstellung der Zahnstange einleitet.
  5. Vorrichtung nach Anspruch 4,
    dadurch gekennzeichnet, dass diese eine Aneroid-Kapsel (22) umfasst, welche einen Höhenmesser bildet und den ersten Teilraum des Zylinders automatisch mit der Quelle in Verbindung setzt, um die maximale Klemmfeststellung im Falle eines Abfalls des Umgebungsdruckes einzuleiten.
  6. Vorrichtung nach Anspruch 5,
    dadurch gekennzeichnet, dass die Aneroid-Kapsel eine Ventilklappe steuert, um mit der Ankunft des Druck-Atmungsgases die Verbindung vom ersten Teilraum herzustellen.
  7. Vorrichtung nach Anspruch 2 oder 3,
    dadurch gekennzeichnet, dass diese eine Aneroid-Kapsel zur automatischen Klemmfeststellung der mechanischen Einrichtung im Falle der Schaffung eines Druckausgleichs umfasst.
EP99918026A 1998-05-12 1999-05-07 Atemschutzgerät zum schnellen anziehen Expired - Lifetime EP1077743B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9805949A FR2778575B1 (fr) 1998-05-12 1998-05-12 Equipement de protection respiratoire a mise en place rapide
FR9805949 1998-05-12
PCT/FR1999/001087 WO1999058197A1 (fr) 1998-05-12 1999-05-07 Equipement de protection respiratoire a mise en place rapide

Publications (2)

Publication Number Publication Date
EP1077743A1 EP1077743A1 (de) 2001-02-28
EP1077743B1 true EP1077743B1 (de) 2004-09-22

Family

ID=9526246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99918026A Expired - Lifetime EP1077743B1 (de) 1998-05-12 1999-05-07 Atemschutzgerät zum schnellen anziehen

Country Status (15)

Country Link
US (1) US6470887B1 (de)
EP (1) EP1077743B1 (de)
JP (1) JP2002514482A (de)
KR (1) KR20010043518A (de)
CN (1) CN1146456C (de)
AT (1) ATE276799T1 (de)
AU (1) AU3609799A (de)
DE (1) DE69920441T2 (de)
ES (1) ES2229700T3 (de)
FR (1) FR2778575B1 (de)
ID (1) ID29278A (de)
NO (1) NO320451B1 (de)
RU (1) RU2214845C2 (de)
UA (1) UA55535C2 (de)
WO (1) WO1999058197A1 (de)

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EP2213324B1 (de) 2009-01-30 2016-07-27 ResMed R&D Germany GmbH Patientenschnittstellenstruktur und Verfahren/Werkzeug zu ihrer Herstellung
US8294767B2 (en) 2009-01-30 2012-10-23 Microsoft Corporation Body scan
US10065010B2 (en) * 2009-12-23 2018-09-04 Fisher & Paykel Healthcare Limited Patient interface and headgear
BR112012017853B1 (pt) * 2010-01-22 2019-10-01 Zodiac Aerotechnics Conjunto de respiração para avião
BR112013011710B1 (pt) 2010-11-15 2020-03-10 Zodiac Aerotechnics Equipamento respiratório para aeronave com um arnês inflável
BR112014010329B1 (pt) 2011-10-31 2020-02-18 Zodiac Aerotechnics Método para armazenar uma máscara respiratória e equipamento respiratório
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Also Published As

Publication number Publication date
JP2002514482A (ja) 2002-05-21
FR2778575B1 (fr) 2000-07-28
ES2229700T3 (es) 2005-04-16
ATE276799T1 (de) 2004-10-15
NO20005695D0 (no) 2000-11-10
KR20010043518A (ko) 2001-05-25
DE69920441D1 (de) 2004-10-28
UA55535C2 (uk) 2003-04-15
US6470887B1 (en) 2002-10-29
AU3609799A (en) 1999-11-29
NO320451B1 (no) 2005-12-05
NO20005695L (no) 2001-01-10
FR2778575A1 (fr) 1999-11-19
CN1146456C (zh) 2004-04-21
EP1077743A1 (de) 2001-02-28
CN1300228A (zh) 2001-06-20
RU2214845C2 (ru) 2003-10-27
DE69920441T2 (de) 2005-11-10
WO1999058197A1 (fr) 1999-11-18
ID29278A (id) 2001-08-16

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