EP2361656B1 - Respirator mask - Google Patents

Respirator mask Download PDF

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Publication number
EP2361656B1
EP2361656B1 EP10154805.5A EP10154805A EP2361656B1 EP 2361656 B1 EP2361656 B1 EP 2361656B1 EP 10154805 A EP10154805 A EP 10154805A EP 2361656 B1 EP2361656 B1 EP 2361656B1
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EP
European Patent Office
Prior art keywords
switching position
sliding element
respiratory mask
mask according
locking
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.)
Not-in-force
Application number
EP10154805.5A
Other languages
German (de)
French (fr)
Other versions
EP2361656A1 (en
Inventor
Alexander Busch
Dirk Feil
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.)
Draeger Safety AG and Co KGaA
Original Assignee
Draeger Safety AG and Co KGaA
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 Draeger Safety AG and Co KGaA filed Critical Draeger Safety AG and Co KGaA
Priority to EP10154805.5A priority Critical patent/EP2361656B1/en
Priority to US13/019,745 priority patent/US8631794B2/en
Publication of EP2361656A1 publication Critical patent/EP2361656A1/en
Application granted granted Critical
Publication of EP2361656B1 publication Critical patent/EP2361656B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00Component parts for respiratory or breathing apparatus
    • A62B9/02Valves
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing 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
    • A62B18/08Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/10Valves

Definitions

  • the invention relates to a respirator for normal pressure and overpressure operation.
  • Respiratory masks are used, for example, for combating harmful fires and in dealing with dangerous substances and goods. Respiratory masks with the operating modes "normal pressure” and “overpressure” are known.
  • the "normal pressure" operating mode is present, for example, when a respiratory protection filter is connected to the respiratory mask.
  • the pressure level in the interior of the respirator corresponds to that of the atmospheric pressure.
  • the operating mode "overpressure" is present, for example, in the case of a connection of a breathing apparatus of a compressed air breathing apparatus to the respiratory mask.
  • the pressure level in the interior of the respirator is greater than that of the atmospheric pressure.
  • the generation of overpressure is not required for every application.
  • the air inhaled directly by the mask wearer is cleaned, for example, by a filter located on a breathing connection.
  • the exhalation valve is normally closed and only opens during the exhalation phase of the mask wearer due to the exhalation pressure that arises in the mask.
  • the pressure level within the mask corresponds to the level of the external pressure.
  • the pressure level within the mask shifts by a certain positive amount compared to the level of the outside atmospheric pressure, so that the mask internal pressure is above the respective atmospheric pressure during both inhalation and exhalation.
  • the exhalation valve also opens here during the Exhalation due to the exhalation pressure in the mask.
  • the exhalation valve must close against the now existing pressure level gradient.
  • the exhalation valve thus has different pressures depending on the operating mode.
  • the exhalation valve must therefore be controlled according to the respective operating mode in the case of a respirator with the operating modes "normal pressure” and "overpressure".
  • the IT 1 227 248 discloses a spring opposing the opening of the exhaust valve which acts on a pin projecting outside the mask.
  • the pin is arranged to be pressed to increase the pressure of the spring when the internal pressure of the mask is increased, for example, by connecting a SCBA.
  • the DE 10 2004 052 173 B3 shows a respirator of the type mentioned, in which a bias of a valve spring via an adjusting means is changeable, wherein the adjusting means is designed as a pivotable about an axis of rotation angle lever.
  • GB 2 264 646 A describes a respirator with the features of the preamble of claim 1.
  • This respirator has a complicated mechanism which is designed to automatically by the process of inserting the breathing air hose to the mask switching the mode from "normal operation” to "over-pressure operation” cause.
  • the invention has for its object to improve a respirator with the modes "normal pressure” and “pressure” so that a switch between the modes by means of a simple mechanical mechanism is possible.
  • the respiratory mask according to the invention comprises at least one respiratory connection, an exhalation valve with a valve spring, an adjusting element influencing the pretension of the valve spring and a sliding element with a first and a second switching position.
  • the sliding element is further designed to act in a translational movement of the first switching position in the second switching position on the adjusting element, so that a change in the bias of the valve spring is reached and thus switching from the operating mode "normal pressure” to the operating mode "overpressure” is executable, where
  • the adjusting element is designed as a pivotable lever arm.
  • the lever arm has a transmission element, which is formed in an upper position of the lever arm obliquely to the plane of the sliding element, wherein the sliding element on the slope of the transmission element is movable and the transmission element is arranged on the lever arm, that during a movement of the sliding element of the Lever arm presses on the valve spring.
  • the sliding element at the end faces in each case at least one locking element for locking the sliding element in the first switching position and in the second switching position.
  • the sliding element is designed as an elastic double clasp with two locking elements on the end faces, wherein a moving together of the two locking elements of an end side causes a movement apart of the locking elements of the other end side.
  • this elastic double clasp with a cover with two frontal openings which surrounds the sliding element, protrude both in the first switching position and in the second switching position, the respective end-side locking elements through the respective opening of the cover.
  • the locking in the respective desired switching position is inherently automatic due to the spring action of the double clasp.
  • a locking of the sliding element can be effected in a simple manner both in the first and in the second switching position.
  • the locking elements each have a grip area. With the help of the grip areas, the sliding element can be released from the lock and moved manually in a simple manner.
  • At least one locking element is designed as a visual indicator for detecting a setting of the operating modes "normal pressure” and "overpressure".
  • the at least one locking element is preferably arranged on the mask body such that the position of the locking element can be recognized by the mask wearer by the mask wearer. From the mask wearer thus the respective set operating mode of the respirator is easily recognizable.
  • a signal generator for detecting the first and the second switching position of the sliding element.
  • a detection element may be provided, which is preferably as an induction proximity switch, a reed switch or as a Hall sensor is executed.
  • the detection element is preferably arranged in a mask body.
  • the operating modes "normal pressure” and “overpressure” are visually displayable in the mask sight.
  • Fig. 1 is a schematic section of the respirator according to the invention with a mask body 10 and a mask sight 12th shown.
  • a breathing port 14 is provided on the mask body 10.
  • the breathing port 14 has in the illustrated structural design on its front side an opening 15 for connection of a regulator in the operating mode "overpressure".
  • connection of a filter takes place at a laterally mounted in the mask body second port.
  • a sliding member 22 (shown in FIG Fig. 3 ) is surrounded by a cover 38.
  • the sliding element 22 can change over a translational movement between a first switching position 24 and a second switching position 26.
  • An arrow 48 shows the direction of movement between the first switching position 24 and the second switching position 26.
  • the sliding element 22 acts in the translational movement on an adjusting element 18.
  • the adjusting element 18 is in Fig. 2 represented and formed as a pivotable lever arm 28.
  • a transmission element 30 is formed, which is in an upper position of the lever arm 28 obliquely to the plane of the sliding element 22.
  • the sliding element 22 acts on a movement between the two switching positions 24 and 26 on the slope of the transmission element 30.
  • the transmission element 30 is arranged on the lever arm 28 that during the movement of the sliding element 22 of the lever arm 28 presses on a valve spring 20.
  • the valve spring 20 In the in Fig. 1 In the first switching position 24, the valve spring 20 is in a relieved state and thereby generates only a minimum bias on the exhalation valve 16.
  • the first switching position 24 corresponds to the operating mode "normal pressure".
  • Fig. 3 schematically shows a structure of the sliding element 22.
  • the sliding element 22 is formed as an elastic double clasp 34.
  • the elastic double clasp 34 consists of two lateral webs, which are interconnected via a connecting web 36.
  • the connecting web 36 is elastic.
  • the locking elements 32 are arranged. A moving together of the two locking elements 32 on one end face causes a disengagement of the two locking elements 32 of the other end face.
  • the sliding element 22 is movably guided within the cover 38.
  • the cover 38 in each case has two end openings 40.
  • the front-side locking elements 32 protrude through the openings 40 of the cover 38 and fix the sliding element 22 in the first switching position 24th
  • the locking elements 32 also have a grip area 42. With the handle portion 42, the sliding element 22 by a movement of the locking elements 32 in the first switching position 24 to each other from the lock releasably and in the direction of the second switching position 26 manually displaceable. The sliding element 22 can be moved under the cover 38 in the second switching position 26. In the second switching position 26, the locking elements 32 protrude through the openings 40 of the cover 38 and thus fix the sliding element 22 in the second switching position 26 (shown in FIG Fig. 4 ).
  • the sliding element 22 is moved over the slope of the transmission element 30, wherein the transmission element is fixedly coupled to the lever arm 28 and this presses on the valve spring 20.
  • the opening pressure of the exhalation valve 16 is increased.
  • the bias of the valve spring 20 and thus the opening pressure of the exhalation valve 16 can be influenced.
  • Fig. 4 shows the sliding element 22 in the second switching position 26.
  • the valve spring 20 In the switching position 26, the valve spring 20, the maximum bias on. Of the Lever arm 28 is located near the exhalation valve 16 (shown in FIG Fig. 5 ).
  • This second switching position 26 corresponds to the operating mode "overpressure".
  • the end-side locking element 32 are designed so that they are visible through the mask sight 12 of the mask wearer.
  • the locking elements 32 thus have a double function.
  • the mask wearer can advantageously recognize the setting of the respirator mask according to the invention in the "normal pressure” mode and the "overpressure” mode in a simple manner.
  • FIGS. 6 and 7 an embodiment with a provided on the sliding element 22 signal generator 46. Furthermore, a detection element 50 is provided, which is preferably arranged in the mask body 10.
  • Fig. 6 shows the sliding element 22 in the first switching position 24 with a relieved valve spring 20.
  • the valve spring 20 has a minimum bias, whereby a small opening pressure for opening the exhalation valve 16 is required.
  • "normal pressure" detects the detection element 50 by means of a signal from the signal generator 46, the position of the sliding element 22.
  • the detection element 50 is connected to a arranged in the mask body 10 display element (not shown), which optically signals the mode "normal operation".
  • the display element may be designed as an LED.
  • Fig. 7 shows the sliding element 22 in the second switching position 26.
  • the valve spring 20 has a maximum bias, whereby the opening pressure the exhalation valve 16 is increased.
  • the position of the sliding element 22 is detected by the detection element 50, which in turn detects a signal of the signal element 46 arranged on the sliding element 22.
  • the second switching position 26 of the sliding element 22 can be detected by the detection element 50 and thus an adjustment of the operating mode "overpressure" on the respirator.
  • a display element connected to the detection element 50 in the mask body 10 (not shown) signals the operating mode "overpressure".
  • the detection element 50 may be formed as an induction proximity switch or as a magnetic switch in the embodiment of a reed switch or Hall sensor.

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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

Die Erfindung betrifft eine Atemschutzmaske für Normaldruck- und Überdruckbetrieb.The invention relates to a respirator for normal pressure and overpressure operation.

Atemschutzmasken werden beispielsweise zur Bekämpfung von Schadfeuern und im Umgang mit gefährlichen Stoffen und Gütern verwendet. Bekannt sind Atemschutzmasken mit den Betriebsarten "Normaldruck" und "Überdruck".Respiratory masks are used, for example, for combating harmful fires and in dealing with dangerous substances and goods. Respiratory masks with the operating modes "normal pressure" and "overpressure" are known.

Die Betriebsart "Normaldruck" liegt beispielsweise bei einem Anschluss eines Atemschutzfilters an die Atemschutzmaske vor. Das Druckniveau im Innenraum der Atemschutzmaske entspricht dabei dem des atmosphärischen Umgebungsdruckes. Die Betriebsart "Überdruck" liegt beispielsweise bei einem Anschluss eines Lungenautomaten eines Pressluftatmers an die Atemschutzmaske vor. Das Druckniveau im Innenraum der Atemschutzmaske ist dabei größer als das des atmosphärischen Umgebungsdruckes. Somit wird effektiv ein Eindringen von Schadgasen in die Maske verhindert.The "normal pressure" operating mode is present, for example, when a respiratory protection filter is connected to the respiratory mask. The pressure level in the interior of the respirator corresponds to that of the atmospheric pressure. The operating mode "overpressure" is present, for example, in the case of a connection of a breathing apparatus of a compressed air breathing apparatus to the respiratory mask. The pressure level in the interior of the respirator is greater than that of the atmospheric pressure. Thus, intrusion of noxious gases into the mask is effectively prevented.

Die Erzeugung eines Überdrucks ist jedoch nicht für jeden Anwendungsfall erforderlich. In der Betriebsart "Normaldruck" wird die vom Maskenträger direkt eingeatmete Luft beispielsweise von einem an einem Atemanschluss befindlichen Filter gereinigt. Das Ausatemventil ist in der Regel geschlossen und öffnet sich nur während der Ausatmungsphase des Maskenträgers bedingt durch den in der Maske entstehenden Ausatemdruck. In der Betriebsart "Normaldruck" entspricht das Druckniveau innerhalb der Maske dem Niveau des Außendruckes.However, the generation of overpressure is not required for every application. In the "normal pressure" operating mode, the air inhaled directly by the mask wearer is cleaned, for example, by a filter located on a breathing connection. The exhalation valve is normally closed and only opens during the exhalation phase of the mask wearer due to the exhalation pressure that arises in the mask. In the operating mode "normal pressure", the pressure level within the mask corresponds to the level of the external pressure.

In der Betriebsart "Überdruck" verschiebt sich das Druckniveau innerhalb der Maske um einen gewissen positiven Betrag im Vergleich zum Niveau des äußeren Atmosphärendrucks, so dass der Maskeninnendruck sowohl während der Einatmung als auch während der Ausatmung über dem jeweiligen Atmosphärendruck liegt. Das Ausatemventil öffnet sich auch hier während der Ausatemphase bedingt durch den in der Maske entstehenden Ausatemdruck. Zusätzlich muss das Ausatemventil gegen das nun existierende Druckniveaugefälle schließen.In the overpressure mode, the pressure level within the mask shifts by a certain positive amount compared to the level of the outside atmospheric pressure, so that the mask internal pressure is above the respective atmospheric pressure during both inhalation and exhalation. The exhalation valve also opens here during the Exhalation due to the exhalation pressure in the mask. In addition, the exhalation valve must close against the now existing pressure level gradient.

Auf das Ausatemventil wirken somit in Abhängigkeit der Betriebsart unterschiedliche Drücke. Das Ausatemventil muss bei einer Atemschutzmaske mit den Betriebsarten "Normaldruck" und "Überdruck" demnach entsprechend der jeweiligen Betriebsart gesteuert werden.The exhalation valve thus has different pressures depending on the operating mode. The exhalation valve must therefore be controlled according to the respective operating mode in the case of a respirator with the operating modes "normal pressure" and "overpressure".

Die IT 1 227 248 offenbart eine dem Öffnen des Auslassventils entgegenwirkende Feder, welche auf einen zur Außenseite der Maske vorstehenden Stift einwirkt. Der Stift ist so angeordnet, dass er gedrückt wird, um den Druck der Feder zu erhöhen, wenn der Innendruck der Maske beispielsweise durch Anschluss eines Pressluftatmers erhöht wird.The IT 1 227 248 discloses a spring opposing the opening of the exhaust valve which acts on a pin projecting outside the mask. The pin is arranged to be pressed to increase the pressure of the spring when the internal pressure of the mask is increased, for example, by connecting a SCBA.

Aus der EP 0 667 171 B1 ist eine Atemschutzmaske bekannt mit zwei in Reihe geschalteten Federn unterschiedlicher Vorspannung. Die Feder mit der geringeren Vorspannung ist bei der Anwendung der Maske im Filterbetrieb aktiv, wo hingegen die Feder mit der größeren Vorspannung bei der Anwendung mit einem Lungenautomaten, d. h. mit Überdruck in der Maske aktiviert wird.From the EP 0 667 171 B1 is a respirator known with two springs connected in series of different bias. The spring with the lower bias voltage is active when using the mask in the filter mode, whereas, on the other hand, the spring with the larger bias voltage when activated with an automatic regulator, ie with positive pressure in the mask is activated.

Die DE 10 2004 052 173 B3 zeigt eine Atemschutzmaske der genannten Bauart, bei der eine Vorspannung einer Ventilfeder über ein Verstellmittel veränderbar ist, wobei das Verstellmittel als ein um eine Drehachse verschwenkbarer Winkelhebel ausgebildet ist.The DE 10 2004 052 173 B3 shows a respirator of the type mentioned, in which a bias of a valve spring via an adjusting means is changeable, wherein the adjusting means is designed as a pivotable about an axis of rotation angle lever.

GB 2 264 646 A beschreibt eine Atemschutzmaske mit den Merkmalen des Oberbegriffs von Anspruch 1. Diese Atemschutzmaske weist einen komplizierten Mechanismus auf, der so ausgestaltet ist, um durch den Vorgang des Einsteckens des Atemluftschlauchs an der Maske automatisch eine Umschaltung der Betriebsart von "Normalbetrieb" auf "Überdruckbetrieb" zu bewirken. GB 2 264 646 A describes a respirator with the features of the preamble of claim 1. This respirator has a complicated mechanism which is designed to automatically by the process of inserting the breathing air hose to the mask switching the mode from "normal operation" to "over-pressure operation" cause.

Der Erfindung liegt die Aufgabe zugrunde, eine Atemschutzmaske mit den Betriebsarten "Normaldruck" und "Überdruck" derart zu verbessern, dass eine Umschaltung zwischen den Betriebsarten mittels eines einfach aufgebauten mechanischen Mechanismus möglich ist.The invention has for its object to improve a respirator with the modes "normal pressure" and "pressure" so that a switch between the modes by means of a simple mechanical mechanism is possible.

Zur Lösung dieser Aufgabe dient die Atemschutzmaske mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen aufgeführt.To achieve this object, the respirator with the features of claim 1. Advantageous embodiments of the invention are set forth in the dependent claims.

Die Lösung der Aufgabe erfolgt dadurch, dass die erfindungsgemäße Atemschutzmaske wenigstens einen Atemanschluss, ein Ausatemventil mit einer Ventilfeder, ein die Vorspannung der Ventilfeder beeinflussendes Verstellelement und ein Schiebeelement mit einer ersten und einer zweiten Schaltstellung aufweist. Das Schiebeelement ist ferner ausgeführt, bei einer translatorischen Bewegung von der ersten Schaltstellung in die zweite Schaltstellung auf das Verstellelement zu wirken, so dass eine Änderung der Vorspannung der Ventilfeder erreichbar ist und damit eine Umschaltung von der Betriebsart "Normaldruck" auf die Betriebsart "Überdruck" ausführbar ist, wobeiThe object is achieved in that the respiratory mask according to the invention comprises at least one respiratory connection, an exhalation valve with a valve spring, an adjusting element influencing the pretension of the valve spring and a sliding element with a first and a second switching position. The sliding element is further designed to act in a translational movement of the first switching position in the second switching position on the adjusting element, so that a change in the bias of the valve spring is reached and thus switching from the operating mode "normal pressure" to the operating mode "overpressure" is executable, where

das Verstellelement als schwenkbarer Hebelarm ausgebildet ist. Der Hebelarm weist ein Übertragungselement auf, welches in einer oberen Position des Hebelarms schräg zu der Ebene des Schiebeelementes ausgebildet ist, wobei das Schiebeelement über die Schräge des Übertragungselementes bewegbar ist und das Übertragungselement so an den Hebelarm angeordnet ist, dass bei einer Bewegung des Schiebeelementes der Hebelarm auf die Ventilfeder drückt.the adjusting element is designed as a pivotable lever arm. The lever arm has a transmission element, which is formed in an upper position of the lever arm obliquely to the plane of the sliding element, wherein the sliding element on the slope of the transmission element is movable and the transmission element is arranged on the lever arm, that during a movement of the sliding element of the Lever arm presses on the valve spring.

In einer vorteilhaften Ausbildung weist das Schiebeelement an den Stirnseiten jeweils wenigstens ein Verriegelungselement für eine Verriegelung des Schiebeelementes in der ersten Schaltstellung und in der zweiten Schaltstellung auf. Somit ist für den Anwender einerseits die jeweilige Betriebsart sicher an der Atemschutzmaske einstellbar und andererseits die jeweilige Betriebsart eindeutig feststellbar.In an advantageous embodiment, the sliding element at the end faces in each case at least one locking element for locking the sliding element in the first switching position and in the second switching position. Thus, on the one hand, the respective operating mode can be reliably set on the respirator and, on the other hand, the respective operating mode can be clearly identified.

In vorteilhafter Weise ist das Schiebeelement als elastische Doppelspange ausgebildet mit jeweils zwei Verriegelungselementen an den Stirnflächen, wobei ein Zusammenbewegen der zwei Verriegelungselemente einer Stirnseite ein Auseinanderbewegen der Verriegelungselemente der anderen Stirnseite bewirkt. In der Zusammenwirkung dieser elastischen Doppelspange mit einer Abdeckung mit jeweils zwei stirnseitigen Öffnungen, die das Schiebelement umgibt, ragen sowohl in der ersten Schaltstellung als auch in der zweiten Schaltstellung die jeweiligen stirnseitigen Verriegelungselemente durch die jeweilige Öffnung der Abdeckung. Die Verriegelung in der jeweils gewünschten Schaltstellung erfolgt prinzipbedingt automatisch aufgrund der Federwirkung der Doppelspange. Somit kann sowohl in der ersten als auch in der zweiten Schaltstellung eine Verriegelung des Schiebeelementes auf einfache Weise bewirkt werden.Advantageously, the sliding element is designed as an elastic double clasp with two locking elements on the end faces, wherein a moving together of the two locking elements of an end side causes a movement apart of the locking elements of the other end side. In the interaction of this elastic double clasp with a cover with two frontal openings which surrounds the sliding element, protrude both in the first switching position and in the second switching position, the respective end-side locking elements through the respective opening of the cover. The locking in the respective desired switching position is inherently automatic due to the spring action of the double clasp. Thus, a locking of the sliding element can be effected in a simple manner both in the first and in the second switching position.

Für eine optimale Führung des Schiebeelementes von der ersten Schaltstellung in die zweite Schaltstellung und zurück, weisen die Verriegelungselemente jeweils einen Griffbereich auf. Mit Hilfe der Griffbereiche ist das Schiebeelement aus der Verriegelung lösbar und auf einfache Art manuell verschiebbar.For optimum guidance of the sliding element from the first switching position to the second switching position and back, the locking elements each have a grip area. With the help of the grip areas, the sliding element can be released from the lock and moved manually in a simple manner.

Zur Entriegelung ist prinzipbedingt aufgrund der redundanten Ausführung der Veriegelungselemente in der Doppelspange eine gegenläufige Auslenkung beider Veriegelungselemente notwendig. Somit kann sowohl in der ersten als auch in der zweiten Schaltstellung eine versehentliche Entriegelung des Schiebeelementes auf einfache Weise verhindert werden.For unlocking is due to the redundant design of the locking elements in the double clasp an opposite deflection of both locking elements is necessary in principle. Thus, both in the first and in the second switching position inadvertent unlocking of the sliding element can be prevented in a simple manner.

In einer weiteren Ausführung ist wenigstens ein Verriegelungselement als Sichtindikator ausgebildet für eine Erkennung einer Einstellung der Betriebsarten "Normaldruck" und "Überdruck". Vorzugsweise ist dabei das wenigstens ein Verriegelungselement so an den Maskenkörper angeordnet, dass die Position des Verriegelungselements durch das Maskenvisier von dem Maskenträger erkennbar ist. Von dem Maskenträger ist somit die jeweilig eingestellte Betriebsart der Atemschutzmaske einfach erkennbar.In a further embodiment, at least one locking element is designed as a visual indicator for detecting a setting of the operating modes "normal pressure" and "overpressure". In this case, the at least one locking element is preferably arranged on the mask body such that the position of the locking element can be recognized by the mask wearer by the mask wearer. From the mask wearer thus the respective set operating mode of the respirator is easily recognizable.

Alternativ hierzu kann an dem Schiebeelement ein Signalgeber zur Erkennung der ersten und der zweiten Schaltstellung des Schiebeelements vorgesehen sein. Ferner kann ein Detektionselement vorgesehen sein, welches vorzugsweise als ein Induktionsnäherungsschalter, ein Reed-Schalter oder als ein Hallsensor ausgeführt ist. Das Detektionselement ist vorzugsweise in einem Maskenkörper angeordnet. In vorteilhafter Weise sind die Betriebsarten "Normaldruck" und "Überdruck" im Maskenvisier optisch anzeigbar.Alternatively, it may be provided on the sliding element, a signal generator for detecting the first and the second switching position of the sliding element. Furthermore, a detection element may be provided, which is preferably as an induction proximity switch, a reed switch or as a Hall sensor is executed. The detection element is preferably arranged in a mask body. Advantageously, the operating modes "normal pressure" and "overpressure" are visually displayable in the mask sight.

Die vorliegende Erfindung wird mit Bezug auf die beigefügten Zeichnungen detailliert erläutert, wobei gleiche Bezugszeichen, gleiche Figuren bezeichnen.The present invention will be explained in detail with reference to the accompanying drawings, wherein like reference numerals designate like figures.

In der Zeichnung gilt:

Fig. 1
schematische Darstellung der Atemschutzmaske in einer ersten Schaltstellung eines Schiebeelementes,
Fig. 2
schematische Darstellung des Schiebelementes in Zusammenwirkung mit einem Verstellelement in der in Fig. 1 dargestellten ersten Schaltstellung,
Fig. 3
schematische Darstellung einer Ausführung des Schiebeelementes,
Fig. 4
schematische Darstellung der Atemschutzmaske in einer zweiten Schaltstellung des Schiebeelementes,
Fig. 5
schematische Darstellung des Schiebeelement in Zusammenwirkung mit dem Verstellelement der in Fig. 3 dargestellten zweiten Schaltstellung,
Fig. 6
schematische Darstellung der Atemschutzmaske in der Ausführung mit einem Signalgeber in der ersten Schaltstellung und
Fig. 7
schematische Darstellung der Atemschutzmaske mit einem Signalgeber in einer zweiten Schaltstellung.
In the drawing:
Fig. 1
schematic representation of the respirator in a first switching position of a sliding element,
Fig. 2
schematic representation of the sliding element in cooperation with an adjusting element in the in Fig. 1 shown first switching position,
Fig. 3
schematic representation of an embodiment of the sliding element,
Fig. 4
schematic representation of the respirator in a second switching position of the sliding element,
Fig. 5
schematic representation of the sliding element in cooperation with the adjusting element of Fig. 3 shown second switching position,
Fig. 6
schematic representation of the respirator in the version with a signal generator in the first switching position and
Fig. 7
schematic representation of the respirator with a signal generator in a second switching position.

In Fig. 1 ist schematisch ein Teilausschnitt der erfindungsgemäßen Atemschutzmaske mit einem Maskenkörper 10 und einem Maskenvisier 12 dargestellt. An dem Maskenkörper 10 ist ein Atemanschluss 14 vorgesehen. Der Atemanschluss 14 besitzt in der gezeigten konstruktiven Ausführung an seiner vorderen Seite eine Öffnung 15 für einen Anschluss eines Lungenautomaten in der Betriebsart "Überdruck".In Fig. 1 is a schematic section of the respirator according to the invention with a mask body 10 and a mask sight 12th shown. On the mask body 10, a breathing port 14 is provided. The breathing port 14 has in the illustrated structural design on its front side an opening 15 for connection of a regulator in the operating mode "overpressure".

In der gezeigten konstruktiven Ausführung erfolgt der Anschluss eines Filters an einem seitlich im Maskenkörper angebrachten zweiten Anschluss.In the constructive embodiment shown, the connection of a filter takes place at a laterally mounted in the mask body second port.

Ein Schiebeelement 22 (dargestellt in Fig. 3) wird von einer Abdeckung 38 umgeben. Das Schiebelement 22 kann über eine translatorische Bewegung zwischen einer ersten Schaltstellung 24 und einer zweiten Schaltstellung 26 wechseln. Ein Pfeil 48 zeigt die Bewegungsrichtung zwischen der ersten Schaltstellung 24 und der zweiten Schaltstellung 26. Das Schiebelement 22 wirkt bei der translatorischen Bewegung auf ein Verstellelement 18. Das Verstellelement 18 ist in Fig. 2 dargestellt und als ein schwenkbarer Hebelarm 28 ausgebildet. Ferner ist an dem schwenkbarer Hebelarm 28 ein Übertragungselement 30 ausgebildet, welches in einer oberen Position des Hebelarms 28 schräg zu der Ebene des Schiebeelements 22 steht. Das Schiebeelement 22 wirkt bei einer Bewegung zwischen den beiden Schaltstellungen 24 und 26 auf die Schräge des Übertragungselementes 30. Das Übertragungselement 30 ist dabei so an dem Hebelarm 28 angeordnet, dass bei der Bewegung des Schiebeelementes 22 der Hebelarm 28 auf eine Ventilfeder 20 drückt.A sliding member 22 (shown in FIG Fig. 3 ) is surrounded by a cover 38. The sliding element 22 can change over a translational movement between a first switching position 24 and a second switching position 26. An arrow 48 shows the direction of movement between the first switching position 24 and the second switching position 26. The sliding element 22 acts in the translational movement on an adjusting element 18. The adjusting element 18 is in Fig. 2 represented and formed as a pivotable lever arm 28. Further, on the pivotable lever arm 28, a transmission element 30 is formed, which is in an upper position of the lever arm 28 obliquely to the plane of the sliding element 22. The sliding element 22 acts on a movement between the two switching positions 24 and 26 on the slope of the transmission element 30. The transmission element 30 is arranged on the lever arm 28 that during the movement of the sliding element 22 of the lever arm 28 presses on a valve spring 20.

In der in Fig. 1 dargestellten Ausführung befindet sich das Schiebeelement 22 in der ersten Schaltstellung 24. In der ersten Schaltstellung 24 ist die Ventilfeder 20 in einem entlasteten Zustand und erzeugt dabei nur eine minimale Vorspannung auf das Ausatemventil 16. Die erste Schaltstellung 24 entspricht der Betriebsart "Normaldruck".In the in Fig. 1 In the first switching position 24, the valve spring 20 is in a relieved state and thereby generates only a minimum bias on the exhalation valve 16. The first switching position 24 corresponds to the operating mode "normal pressure".

Fig. 3 zeigt schematisch einen Aufbau des Schiebeelements 22. Das Schiebeelement 22 ist als eine elastische Doppelspange 34 ausgebildet. Die elastische Doppelspange 34 besteht aus zwei seitlichen Stegen, die über einen Verbindungssteg 36 miteinander verbunden sind. Der Verbindungssteg 36 ist elastisch ausgeführt. An den jeweiligen Enden der seitlichen Stege sind die Verriegelungselemente 32 angeordnet. Ein Zusammenbewegen der beiden Verriegelungselementen 32 an einer Stirnseite bewirkt ein Auseinanderbewegen der beiden Verriegelungselemente 32 der anderen Stirnseite. Fig. 3 schematically shows a structure of the sliding element 22. The sliding element 22 is formed as an elastic double clasp 34. The elastic double clasp 34 consists of two lateral webs, which are interconnected via a connecting web 36. The connecting web 36 is elastic. At the respective ends of the lateral webs, the locking elements 32 are arranged. A moving together of the two locking elements 32 on one end face causes a disengagement of the two locking elements 32 of the other end face.

Das Schiebeelement 22 ist beweglich innerhalb der Abdeckung 38 geführt. Die Abdeckung 38 weist jeweils zwei stirnseitige Öffnungen 40 auf. In der in Fig. 1 dargestellten Ausführung ragen die stirnseitigen Verriegelungselemente 32 durch die Öffnungen 40 der Abdeckung 38 und fixieren das Schiebeelement 22 in der ersten Schaltstellung 24.The sliding element 22 is movably guided within the cover 38. The cover 38 in each case has two end openings 40. In the in Fig. 1 The illustrated embodiment, the front-side locking elements 32 protrude through the openings 40 of the cover 38 and fix the sliding element 22 in the first switching position 24th

Die Verriegelungselemente 32 weisen ferner einen Griffbereich 42 auf. Mit dem Griffbereich 42 ist das Schiebeelement 22 durch eine Bewegung der Verriegelungselemente 32 in der ersten Schaltstellung 24 zueinander aus der Verriegelung lösbar und in Richtung der zweiten Schaltstellung 26 manuell verschiebbar. Das Schiebeelement 22 lässt sich unter der Abdeckung 38 in die zweite Schaltstellung 26 bewegen. In der zweiten Schaltstellung 26 ragen die Verriegelungselemente 32 durch die Öffnungen 40 der Abdeckung 38 und fixieren somit das Schiebeelement 22 in der zweiten Schaltstellung 26 (dargestellt in Fig. 4).The locking elements 32 also have a grip area 42. With the handle portion 42, the sliding element 22 by a movement of the locking elements 32 in the first switching position 24 to each other from the lock releasably and in the direction of the second switching position 26 manually displaceable. The sliding element 22 can be moved under the cover 38 in the second switching position 26. In the second switching position 26, the locking elements 32 protrude through the openings 40 of the cover 38 and thus fix the sliding element 22 in the second switching position 26 (shown in FIG Fig. 4 ).

Bei der Verschiebung des Schiebeelements 22 von der ersten Schaltstellung 24 in die zweite Schaltstellung 26 wird das Schiebeelement 22 über die Schräge des Übertragungselementes 30 bewegt, wobei das Übertragungselement fest mit dem Hebelarm 28 gekoppelt ist und diesen dabei auf die Ventilfeder 20 drückt. Durch die Stauchung der Ventilfeder 20 und die damit verbundene höhere Vorspannung auf dem Ausatemventil 16 wird der Öffnungsdruck des Ausatemventil 16 erhöht. Über die Schräge des Übertragungselementes 30 und das Längenverhältnis von Übertragungselement 30 zu dem Hebelarm 28 lässt sich die Vorspannung der Ventilfeder 20 und damit der Öffnungsdruck des Ausatemventils 16 beeinflussen.During the displacement of the sliding element 22 from the first switching position 24 to the second switching position 26, the sliding element 22 is moved over the slope of the transmission element 30, wherein the transmission element is fixedly coupled to the lever arm 28 and this presses on the valve spring 20. By the compression of the valve spring 20 and the associated higher bias on the exhalation valve 16, the opening pressure of the exhalation valve 16 is increased. About the slope of the transmission element 30 and the aspect ratio of the transmission element 30 to the lever arm 28, the bias of the valve spring 20 and thus the opening pressure of the exhalation valve 16 can be influenced.

Fig. 4 zeigt das Schiebeelement 22 in der zweiten Schaltstellung 26. In der Schaltstellung 26 weist die Ventilfeder 20 die maximale Vorspannung auf. Der Hebelarm 28 befindet sich in der Nähe des Ausatemventils 16 (dargestellt in Fig. 5). Diese zweite Schaltstellung 26 entspricht der Betriebsart "Überdruck". Fig. 4 shows the sliding element 22 in the second switching position 26. In the switching position 26, the valve spring 20, the maximum bias on. Of the Lever arm 28 is located near the exhalation valve 16 (shown in FIG Fig. 5 ). This second switching position 26 corresponds to the operating mode "overpressure".

In der in Fig.1 dargestellten ersten Schaltstellung 24 sind die stirnseitigen Verriegelungselement 32 so ausgeführt, dass sie durch das Maskenvisier 12 von dem Maskenträger erkennbar sind. In der ersten Schaltstellung 24 weisen die Verriegelüngselemente 32 somit eine Doppelfunktion auf. Sie verriegeln einerseits das Schiebeelements 22 und dienen andererseits als Sichtindikatoren 44 zur Erkennung der ersten Schaltstellung 24 und damit der Betriebsart "Normaldruck" durch den Maskenträger.In the in Fig.1 shown first switching position 24, the end-side locking element 32 are designed so that they are visible through the mask sight 12 of the mask wearer. In the first switching position 24, the locking elements 32 thus have a double function. On the one hand, they lock the sliding element 22 and on the other hand they serve as visual indicators 44 for detecting the first switching position 24 and thus the operating mode "normal pressure" by the mask wearer.

In der zweiten Schaltstellung 26 sind die Verriegelungselemente 32 der ersten Schaltstellung 24 bzw. die Sichtindikatoren 44 außerhalb des Sichtfeldes des Maskenträgers. Damit kann der Maskenträger in vorteilhafter Weise die Einstellung der erfindungsgemäßen Atemschutzmaske in der Betriebsart "Normaldruck" und der Betriebsart "Überdruck" auf einfache Weise erkennen.In the second switching position 26, the locking elements 32 of the first switching position 24 and the visual indicators 44 are outside the field of view of the mask wearer. Thus, the mask wearer can advantageously recognize the setting of the respirator mask according to the invention in the "normal pressure" mode and the "overpressure" mode in a simple manner.

Alternativ dazu zeigen die schematischen Darstellungen der Figuren 6 und 7 eine Ausführung mit einem an dem Schiebeelement 22 vorgesehenen Signalgeber 46. Ferner ist ein Detektionselement 50 vorgesehen, welches vorzugsweise in dem Maskenkörper 10 angeordnet ist.Alternatively, the schematic representations of FIGS. 6 and 7 an embodiment with a provided on the sliding element 22 signal generator 46. Furthermore, a detection element 50 is provided, which is preferably arranged in the mask body 10.

Fig. 6 zeigt das Schiebeelement 22 in der ersten Schaltstellung 24 mit einer entlasteten Ventilfeder 20. Die Ventilfeder 20 weist eine minimale Vorspannung auf, wodurch ein geringer Öffnungsdruck zur Öffnung des Ausatemventils 16 erforderlich ist. In dieser Betriebsart "Normaldruck" erfasst das Detektionselement 50 mittels eines Signals des Signalgebers 46 die Position des Schiebeelementes 22. Das Detektionselement 50 ist mit einem in dem Maskenkörper 10 angeordneten Anzeigeelement verbunden (nicht dargestellt), welches optisch die Betriebsart "Normalbetrieb" signalisiert. Das Anzeigeelement kann als eine LED ausgeführt sein. Fig. 6 shows the sliding element 22 in the first switching position 24 with a relieved valve spring 20. The valve spring 20 has a minimum bias, whereby a small opening pressure for opening the exhalation valve 16 is required. In this operating mode "normal pressure" detects the detection element 50 by means of a signal from the signal generator 46, the position of the sliding element 22. The detection element 50 is connected to a arranged in the mask body 10 display element (not shown), which optically signals the mode "normal operation". The display element may be designed as an LED.

Fig. 7 zeigt das Schiebeelement 22 in der zweiten Schaltstellung 26. Die Ventilfeder 20 weist eine maximale Vorspannung auf, wodurch der Öffnungsdruck des Ausatemventils 16 erhöht ist. Die Position des Schiebeelementes 22 wird von dem Detektionselement 50 erkannt, welches wiederum ein Signal des an dem Schiebeelement 22 angeordneten Signalgebers 46 erfasst. Somit kann die zweiten Schaltstellung 26 des Schiebeelementes 22 von dem Detektionselement 50 erkannt werden und damit eine Einstellung der Betriebsart "Überdruck" an der Atemschutzmaske. Ein mit dem Detektionselement 50 verbundenes Anzeigeelement im Maskenkörper 10 (nicht dargestellt) signalisiert die Betriebsart "Überdruck". Fig. 7 shows the sliding element 22 in the second switching position 26. The valve spring 20 has a maximum bias, whereby the opening pressure the exhalation valve 16 is increased. The position of the sliding element 22 is detected by the detection element 50, which in turn detects a signal of the signal element 46 arranged on the sliding element 22. Thus, the second switching position 26 of the sliding element 22 can be detected by the detection element 50 and thus an adjustment of the operating mode "overpressure" on the respirator. A display element connected to the detection element 50 in the mask body 10 (not shown) signals the operating mode "overpressure".

Das Detektionselement 50 kann als ein Induktionsnäherungsschalter oder als Magnetschalter in der Ausführung eines Reed-Schalters oder Hallsensors ausgebildet sein.The detection element 50 may be formed as an induction proximity switch or as a magnetic switch in the embodiment of a reed switch or Hall sensor.

Während die vorliegende Erfindung unter Bezugnahme auf die bevorzugten Ausführungsbeispiele beschrieben worden ist, sind dem Fachmann verschiedene Änderungen und Modifikationen klar. All diese Änderungen und Modifikationen sollen in den Schutzbereich der angeführten Ansprüche fallen.While the present invention has been described with reference to the preferred embodiments, various changes and modifications will be apparent to those skilled in the art. All such changes and modifications are intended to be within the scope of the appended claims.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

1010
Maskenkörpermask body
1212
Maskenvisiermask visor
1414
Atemanschlussfacepiece
1515
Öffnungopening
1616
Ausatemventilexhalation valve
1818
Verstellelementadjustment
2020
Ventilfedervalve spring
2222
Schiebeelementsliding element
2424
erste Schaltstellungfirst switching position
2626
zweite Schaltstellungsecond switch position
2828
Hebelarmlever arm
3030
Übertragungselementtransmission element
3232
Verriegelungselementlocking element
3434
Doppelspangedouble clasp
3636
Verbindungsstegconnecting web
3838
Abdeckungcover
4040
Öffnungenopenings
4242
Griffbereichgrip area
4444
Sichtindikatorvisual indicator
4646
Signalgebersignaler
4848
Schieberichtungsliding direction
5050
Detektionselementdetection element

Claims (12)

  1. A protective respiratory mask for normal-pressure and overpressure operation having at least one respiratory connection (14), an expiratory valve (16) with a valve spring (20), an adjusting element (18) affecting the pre-tension of the valve spring (20), a sliding element having a first switching position (24) and a second switching position (26), wherein the sliding element (22) is constructed in such a way in order to act on the adjusting element (18), in the case of a translatory movement from the first switching position (24) into the second switching position (26), so that a change in the pre-tension of the valve spring (20) can be achieved and thus a switch-over from an operating mode "normal pressure" to an operating mode "overpressure" can be effected, characterised in that the adjusting element (18) is formed as a pivotable lever arm (28), and in that the lever arm (28) has at least one transmission element (30) which in an upper position of the lever arm (28) is formed obliquely with respect to the plane of the sliding element (22), wherein the sliding element (22) is moved over the slope of the transmission element (30) in the case of the translatory movement from the first switching position into the second switching position, and wherein the transmission element (30) is arranged on the lever arm (28) so that in the case of a movement of the sliding element (22) out of the first switching position (24) into the second switching position (26) the lever arm (28) is pressed onto the valve spring (20).
  2. A protective respiratory mask according to claim 1, characterised in that the sliding element (22) has on the end faces in each case at least one locking element (32) for locking the sliding element (22) in the first switching position (24) and in the second switching position (26).
  3. A protective respiratory mask according to one of the preceding claims, characterised in that the sliding element (22) is formed as an elastic double clasp (34) with in each case two locking elements (32) on the end faces, wherein a moving together of the two locking elements (32) of one end face gives rise to a moving apart of the locking elements (32) of the other end face.
  4. A protective respiratory mask according to one of the preceding claims, characterised in that a cover (38) having in each case two end-face openings (40) is provided, wherein the cover (38) surrounds the sliding element (22).
  5. A protective respiratory mask according to claim 4, characterised in that the end-face locking elements in the first switching position (24) and in the second switching position (26) project through the respective openings (40) of the cover (38) and in these positions give rise to a locking of the sliding element (22).
  6. A protective respiratory mask according to one of the preceding claims, characterised in that the locking elements (32) have a grip area (42), by means of which the sliding element (22) can be released from the lock and manually displaced.
  7. A protective respiratory mask according to one of the preceding claims, characterised in that at least one locking element is constructed as a visual indicator (44) for identifying a setting of the operating modes "normal pressure" and "overpressure".
  8. A protective respiratory mask according to claim 7, characterised in that at least one locking element (32) is arranged on a mask body (10) in such a way.that the position of the locking element (32) can be identified through a mask visor (12).
  9. A protective respiratory mask according to one of the preceding claims, characterised in that provided on the sliding element (22) there is a signal transmitter (46) which signals the first switching position (24) and the second switching Position (26) of the sliding element (22).
  10. A protective respiratory mask according to claim 9, characterised in that a detection element (50) is provided that is preferably constructed as an induction proximity switch, a reed switch or as a Hall sensor.
  11. A protective respiratory mask according to claim 10, characterised in that the detection element (50) is arranged in a mask body (10).
  12. A protective respiratory mask according to one of the preceding claims, characterised in that the operating modes "normal pressure" and "overpressure" can be indicated visually in the mask visor (12).
EP10154805.5A 2010-02-26 2010-02-26 Respirator mask Not-in-force EP2361656B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10154805.5A EP2361656B1 (en) 2010-02-26 2010-02-26 Respirator mask
US13/019,745 US8631794B2 (en) 2010-02-26 2011-02-02 Gas mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10154805.5A EP2361656B1 (en) 2010-02-26 2010-02-26 Respirator mask

Publications (2)

Publication Number Publication Date
EP2361656A1 EP2361656A1 (en) 2011-08-31
EP2361656B1 true EP2361656B1 (en) 2016-06-08

Family

ID=42310712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10154805.5A Not-in-force EP2361656B1 (en) 2010-02-26 2010-02-26 Respirator mask

Country Status (2)

Country Link
US (1) US8631794B2 (en)
EP (1) EP2361656B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012214860B3 (en) * 2012-08-21 2013-10-31 Dräger Safety AG & Co. KGaA Breathing apparatus
USD881380S1 (en) 2017-10-16 2020-04-14 Gentex Corporation Respirator
US10322312B1 (en) * 2018-06-01 2019-06-18 TrainingMask L.L.C. Resistance and filtration breathing device
JP7103640B2 (en) * 2018-10-16 2022-07-20 山本光学株式会社 Mask adhesion judgment device
EP4210839A1 (en) * 2020-09-11 2023-07-19 MSA Technology, LLC Dual mode breathing apparatus

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Publication number Priority date Publication date Assignee Title
SE7411883L (en) * 1974-09-20 1976-03-22 Testa Lab A S VALVE DEVICE FOR LUNG VENTILATION SYSTEM
US4606340A (en) * 1983-07-14 1986-08-19 Figgie International Inc. Combined pressure compensating exhalation and anti-suffocation valve
US5086768A (en) * 1987-02-24 1992-02-11 Filcon Corporation Respiratory protective device
IT1227248B (en) * 1988-09-30 1991-03-28 Spasciani Riccardo Spa Filter mask for respiration device with (pressurised) air
US5159641A (en) * 1991-07-31 1992-10-27 Figgie International, Inc. Microphone circuit control mechanism for breathing apparatus
GB2264646A (en) * 1992-02-12 1993-09-08 Sabre Safety Ltd Breathing apparatus
DE4237294C1 (en) * 1992-11-05 1993-11-25 Draegerwerk Ag Breathing mask with positive pressure inside the mask
US5623923A (en) * 1993-06-09 1997-04-29 Intertechnique Respiratory equipment with comfort adjustment
IT232743Y1 (en) * 1994-02-09 2000-01-19 Spasciani Riccardo Spa IMPROVED MASK FOR PRESSURED OR UNPRESSURED AIR BREATHING DEVICES
GB9619459D0 (en) * 1996-09-18 1996-10-30 Jackson Peter J Breathing apparatus
DE102004052173B3 (en) * 2004-10-27 2006-01-12 Dräger Safety AG & Co. KGaA Respirator for normal pressure and overpressure operation

Also Published As

Publication number Publication date
EP2361656A1 (en) 2011-08-31
US8631794B2 (en) 2014-01-21
US20110209712A1 (en) 2011-09-01

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