EP0459123A1 - Breathing protection mask - Google Patents

Breathing protection mask Download PDF

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Publication number
EP0459123A1
EP0459123A1 EP91105994A EP91105994A EP0459123A1 EP 0459123 A1 EP0459123 A1 EP 0459123A1 EP 91105994 A EP91105994 A EP 91105994A EP 91105994 A EP91105994 A EP 91105994A EP 0459123 A1 EP0459123 A1 EP 0459123A1
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EP
European Patent Office
Prior art keywords
mask
connection
filter
filters
connection adapter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91105994A
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German (de)
French (fr)
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EP0459123B1 (en
Inventor
Joachim Schlobohm
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.)
Draegerwerk AG and Co KGaA
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Draegerwerk AG and Co KGaA
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Publication of EP0459123A1 publication Critical patent/EP0459123A1/en
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Publication of EP0459123B1 publication Critical patent/EP0459123B1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/04—Couplings; Supporting frames
    • 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 invention relates to a breathing mask with connection openings for filters and a mask body which is designed as a full mask or half mask.
  • a respirator with a mask body as a full mask has become known from DE-PS 17 08 046.
  • the known respirator mask consists of a mask body with connection openings for filters and exhalation valves and an internal half mask.
  • the mask body is designed so that its shape or its form of manufacture does not have to be changed if the connection points for the filter or the exhalation valves are to be laid.
  • the mask body has indentations or protrusions which, if necessary, can be punched through at the desired locations and are used for the optional connection of one or more filters or one or more exhalation valves.
  • the production of a specific respirator configuration takes place by first creating a uniform mask body without breakthroughs and later punching indentations in the desired position and attaching filters and / or exhalation valves to the connections created here.
  • the area of application of the respirator is defined by perforations which have been punched once. eg as a single-filter or as a two-filter respirator. Retrofitting to a different breathing mask configuration is only possible if connecting pieces that are no longer required are closed using the accessories provided. If, for example, a two-filter respirator with an exhalation valve is converted to the single-filter respirator, either an additional exhalation valve or a separate sealing plug must be inserted into the connection opening in the mask body instead of the second filter. In the known respirator there is also the risk that indentations are accidentally punched through during use of the device and then the respirator cannot be used due to the leakage that has occurred.
  • a half mask with connection openings for attaching filters and exhalation valves has become known from DE-GM 16 25 097.
  • two filters are attached to the side of the half mask, and the exhalation valve is located on the front side of the half mask in front of the mouth.
  • a second embodiment provides for only a single filter to be inserted into the connection opening of the exhalation valve and for the breathing air to flow out via a rubber lip valve on the underside of the half mask. The side connection openings are closed in this state.
  • the invention has for its object to improve a respirator in such a way that retrofitting to one or the other respirator configuration is simplified and is possible without loose closure parts.
  • connection adapter with connection piece can be attached to the full mask or half mask in at least two preferred positions and that a predetermined number of connection openings and connection pieces overlap in each preferred position and that different numbers of filters can be connected to the overlap points and which are not in Cover openings are closed with sealants attached to the connection adapter.
  • connection respirator mask configurations can be realized with the connection adapter, in that it is attached to the respirator mask in different preferred positions and at the same time, in each preferred position, certain connection pieces on the connection adapter are covered by connection openings on the respiratory mask, into which filters can then be inserted. Add-on parts for closing unused connection openings are not necessary, since these be sealed with sealants attached to the connection adapter.
  • the connecting pieces in the connection adapter are either designed as circular openings in the wall of the connection adapter or as threaded or plug sockets.
  • connection adapter can be attached to a respirator with full face mask and inner mask as well as directly to a half mask.
  • connection adapter In the case of the full face mask, the connection adapter is placed over the connection openings in the mouth area, with a predetermined number of connection openings and connection pieces being covered in each preferred position.
  • the connection openings are circular openings in the full mask.
  • annular sealing beads can be attached to the inside of the connection adapter. The sealing beads prevent breathing gas from flowing out of the overlap points into the environment.
  • the connection adapter can also be designed as a changeover switch which is attached to the full face mask or is also part of the full face mask and can be brought into the corresponding preferred position by rotation.
  • connection adapter is plugged directly onto the half mask and the filters are buttoned into the half mask. Since the half mask is usually made of rubber-elastic material, the sealing function is fulfilled at the same time by the buttoning.
  • Single-filter and two-filter respirators are usually used in the device.
  • a single-filter respiratory mask can be implemented in a first preferred position and a two-filter respiratory mask in the second preferred position.
  • the filter is attached to the front of the connection adapter at the level of the mouth, while with the two-filter respirator, the filters are attached to the side flanks of the connection adapter.
  • Identical filters can be used for both configurations of the respirator as a single-filter or two-filter respirator.
  • connection adapter is designed such that it engages around the side flanks of the half mask or the full mask and is designed to hold the filter.
  • the connection adapter is expediently made of solid material and, since it rests in a U-shape on the elastic side flanks, serves as a support for the half mask. Since the intrinsic weight of the filter is completely absorbed by the connection adapter, the half mask can be designed for the purely sealing function and made of soft, supple material, e.g. Silicone.
  • connection adapter for a half mask is provided with a strap for attaching the respiratory mask to the head of the device wearer. Due to the uniform force application of the holding force over the front and the side flanks The half mask creates an even pressure on the face.
  • connection adapter is provided on the side facing the respiratory mask with sealing plugs as sealants, which can be buttoned into the connection openings which are not covered and seal them.
  • the buttoning ensures a secure closure of the connection openings and does not lead to leaks even if the respirator mask is deformed externally.
  • pit-like, rectangular recesses are provided in the area of the connecting piece, which serve to center and prevent rotation of the filter.
  • the filters have a corresponding counterpart which protrudes into the recess and is designed such that the filter can only be attached to the connection adapter in a fixed position. A subsequent adjustment of the filter on the connection adapter in order to achieve a convenient position for the device wearer is no longer necessary.
  • Fig. 1 shows the side view of a breathing mask (20) with a half mask (1) made of rubber-elastic material, a connection adapter (2) made of solid material, a filter (3), a strap (17) and an exhalation valve (5).
  • the breathing mask (20) is constructed symmetrically; therefore only one half is shown in FIGS. 1, 2 and 4. Symmetrical components are identified by the same reference number and index "a"
  • connection adapter (2) is placed on the half mask (1) in a first preferred position and allows an individual filter (3) to be attached in this position.
  • the connection adapter (2) embraces the elastic half mask (1) in a U-shape and is therefore a support for the side flanks thereof.
  • two connection pieces (4, 4a) are provided as circular openings in the wall of the connection adapter (2).
  • the second connecting piece (4a) is located on the rear side and is not shown in Fig. 1.
  • a rectangular, pit-like recess (6, 6a) which acts as a centering aid and Protection against rotation for filters (3) to be used later.
  • connection adapter (2) In the lower area of the connection adapter (2) there are two sealing plugs (7, 7a) which are attached to the inside of the connection adapter (2) and point in the direction of the half mask (1).
  • the strap (17) is guided in an oval eyelet (18) and can be adjusted by moving it in the vertical direction to the head of a device carrier, not shown.
  • Fig. 2 shows a vertical section through the breathing mask (20) according to Fig. 1.
  • the half mask (1) has two connection openings (8, 8a) and a filter connection opening (9).
  • the connection openings (8, 8a, 9) are openings in the rubber-elastic mask wall of the half mask (1).
  • the connection openings (8, 8a) are sealed with the sealing plugs (7, 7a), which are part of the connection adapter (2).
  • the filter (3) is buttoned into the filter connection opening (9) of the half mask (1).
  • the filter (3) is held in the filter connection piece (10) and centered by a filter recess (11) in the connection adapter (2).
  • the filter connection piece (10) is designed as a circular opening in the wall of the connection adapter (2).
  • a corresponding counterpart of the filter (3) engages in the rectangular, pit-like filter recess (11) and thus holds the filter (3) in the predetermined position.
  • a filter plug (12) on the inside, which protrudes into a filter recess (13) of the half mask (1).
  • Corresponding depressions (14, 14a) are provided on the side flanks of the half mask (1).
  • the half mask (1) also has a circumferential sealing bead (21), which rests on the face of the device carrier, not shown.
  • a directional valve (22) is provided in order to prevent gas flow through the filter (3) during exhalation. The exhaled gas can only flow out through the exhalation valve (5).
  • Fig. 3 shows a partial view of Fig. 2 in the sectional plane A-A, in which the symmetrically arranged connection openings (8, 8a) and sealing plugs (7, 7a) can be seen.
  • the filter (3) consists of a screwable housing (15) into which a filter cartridge (16) with a seal (19) is inserted. To change the filter, the housing (15) is screwed on and the filter cartridge (16) is changed. It is not necessary to unbutton the filter (3) from the filter connection opening (9).
  • Fig. 4 shows a breathing mask (20) with a connection adapter (2) which is placed in a second preferred position on the half mask (1) and in this preferred position enables the connection of two filters (3).
  • the conversion from the single-filter respirator according to FIGS. 1 to 3 to a two-filter respirator according to FIG. 4 takes place in such a way that first the filter (3) and the sealing plugs (7, 7a) from the connection openings (8, 8a , 9) are unplugged, Fig. 3.
  • the connection adapter (2) is pulled off the half mask (1) and, rotated by 180 degrees around a horizontal axis, put back on. In the new position, Fig.
  • the filter connecting piece (10) lies opposite the filter recess (13), and the sealing plugs (7, 7a) protrude into the recesses (14, 14a), Fig. 2, Fig. 4. Since the aspect ratios of the connection adapter (2) with respect to the half mask (1) vice versa, the plug (7a) lies in the recess (14) and the plug (7) in the recess (14a).
  • the filter connection opening (9) is sealed with the filter plug (12).
  • the connection pieces (4, 4a) cover the connection openings (8, 8a) of the half mask (1), and two filters (3) can be used here. These filters (3) are not shown in FIG.
  • the filters (3) are centered on the connection adapter (2) via the recesses (6, 6a). Identical filters (3) can be used for both configurations of the respirator as a single-filter or two-filter respirator.
  • Fig. 5 shows the front view of a full face mask (30) with a mask body as a full mask (36), a connection adapter 32, two filters (33, 33a), a strap (47) and an exhalation valve (35).
  • the full mask (36) has connection openings (38, 38a), Fig. 6, and a filter connection opening (39) which are designed as circular openings in the mask wall of the full mask (36).
  • the connection adapter (32) is placed in a second preferred position on the full face mask (36) and in this position allows the attachment of two filters (33, 33a). In the lower area of the connection adapter (32), two connection pieces (34, 34a) are provided for receiving the filters (33, 33a).
  • a filter connecting piece (40) is located in the upper area and is used in the first preferred position with a filter attached in the middle.
  • the connecting pieces (34, 34a, 40) are designed as threaded bushings.
  • On the inside of the connection adapter (32) sealing plugs (37, 37a) and a filter sealing plug (42) are attached, which point in the direction of the full face mask (36) and serve to seal unused connection openings (38, 38a, 39).
  • the filter connection opening (39) is sealed with the filter plug (42) and the connection openings (38, 38a), (Fig. 6) are in overlap with the connection piece (34, 34a).
  • Fig. 6 shows the full face mask (30) of FIG. 5 in section.
  • the gas flow is illustrated by arrows.
  • the gas enters via the connection piece (34, 34a), the connection openings (38, 38a) and the directional valves (351, 352), covers the viewing window (43) and reaches the interior of the inner mask (31.) Via a check valve (44) ).
  • the exhaled air flows out through the exhalation valve (35).
  • the connection adapter (32) is provided on the inside of the connection piece (34, 34a, 40) with circumferential sealing beads (45, 45a) which seal the overlap points against the environment.
  • connection adapter (32) is removed and rotated again by 180 degrees.
  • the sealing plugs (37, 37a) are in the connection openings (38, 38a) and the filter connection piece (40) covers the filter connection opening (39).
  • the connection pieces (34, 34a, 40) shown here are for one Screw connection of the filters (33, 33a); but it can also be used connector with plug connection.
  • Identical filters (33, 33a) can be used for both configurations as a single-filter or two-filter respirator.

Abstract

In a breathing protection mask having connecting apertures for filters and having a mask body, in order to make it possible to convert the breathing protection mask retrospectively to one or other configuration, provision is made for a connecting adapter (2) with connector sockets (4, 10) to be attachable in at least two preferred positions on the complete mask or half-mask (1), and for a predetermined number of connecting apertures (8, 9) and connecting sockets (4, 10) to mask each other in each preferred position, and for filters (3) in varying numbers to be attached at the masking points, and for the connecting apertures (8) which are not masked to be closed by sealing means (7) attached to the connecting adapter (2). <IMAGE>

Description

Die Erfindung betrifft eine Atemschutzmaske mit Anschlußöffnungen für Filter und einem Maskenkörper, der als Vollmaske oder Halbmaske ausgebildet ist.The invention relates to a breathing mask with connection openings for filters and a mask body which is designed as a full mask or half mask.

Eine Atemschutzmaske mit einem Maskenkörper als Vollmaske ist aus der DE-PS 17 08 046 bekanntgeworden. Die bekannte Atemschutzmaske besteht aus einem Maskenkörper mit Anschlußöffnungen für Filter und Ausatemventile und einer innenliegenden Halbmaske. Der Maskenkörper ist so ausgelegt, daß seine Form, bzw. seine Herstellungsform nicht geändert werden muß, wenn die Anschlußstellen für die Filter bzw. die Ausatemventile zu verlegen sind. Hierzu besitzt der Maskenkörper Einbuchtungen oder Vorstülpungen, welche im Bedarfsfall an den gewünschten Stellen durchstanzt werden können und zum wahlweisen Anschluß eines oder mehrerer Filter bzw. eines oder mehrerer Ausatemventile dienen. Die Herstellung einer bestimmten Atemschutzmasken-Konfiguration geschieht in der Weise, daß zunächst ein einheitlicher Maskenkörper ohne Durchbrüche erstellt wird und später in der gewünschten Lage Einbuchtungen durchstanzt und an den hier entstandenen Anschlüssen Filter und/oder Ausatemventile befestigt werden.A respirator with a mask body as a full mask has become known from DE-PS 17 08 046. The known respirator mask consists of a mask body with connection openings for filters and exhalation valves and an internal half mask. The mask body is designed so that its shape or its form of manufacture does not have to be changed if the connection points for the filter or the exhalation valves are to be laid. For this purpose, the mask body has indentations or protrusions which, if necessary, can be punched through at the desired locations and are used for the optional connection of one or more filters or one or more exhalation valves. The production of a specific respirator configuration takes place by first creating a uniform mask body without breakthroughs and later punching indentations in the desired position and attaching filters and / or exhalation valves to the connections created here.

Bei der bekannten Atemschutzmaske ist es von Nachteil, daß durch einmal gestanzte Durchbrüche der Anwendungsbereich der Atemschutzmaske festgelegt ist, z.B. als Einfilter- oder als Zweifilter-Atemschutzmaske. Eine Umrüstung auf eine andere Atemschutzmasken-Konfiguration ist nur möglich, wenn durch Beistellteile nicht mehr benötigte Anschlußstutzen verschlossen werden. Wird beispielsweise eine Zweifilter-Atemschutzmaske mit einem Ausatemventil auf die Einfilter-Atemschutzmaske umgerüstet, muß entweder anstelle des zweiten Filters ein zusätzliches Ausatemventil oder ein separater Verschlußstopfen in die Anschlußöffnung im Maskenkörper gesteckt werden. Bei der bekannten Atemschutzmaske besteht zudem die Gefahr, daß während des Geräteeinsatzes Einbuchtungen versehentlich durchstanzt werden und dann die Atemschutzmaske wegen der entstandenen Leckage nicht mehr einsetzbar ist.In the known respirator, it is disadvantageous that the area of application of the respirator is defined by perforations which have been punched once. eg as a single-filter or as a two-filter respirator. Retrofitting to a different breathing mask configuration is only possible if connecting pieces that are no longer required are closed using the accessories provided. If, for example, a two-filter respirator with an exhalation valve is converted to the single-filter respirator, either an additional exhalation valve or a separate sealing plug must be inserted into the connection opening in the mask body instead of the second filter. In the known respirator there is also the risk that indentations are accidentally punched through during use of the device and then the respirator cannot be used due to the leakage that has occurred.

Eine Halbmaske mit Anschlußöffnungen zur Befestigung von Filtern und Ausatemventilen ist aus dem DE-GM 16 25 097 bekanntgeworden. In einer ersten Ausführungsform sind zwei Filter seitlich an der Halbmaske angebracht, und das Ausatemventil befindet sich an der Stirnseite der Halbmaske vor dem Mund. Eine zweite Ausführungsform sieht vor, nur ein einzelnes Filter in die Anschlußöffnung des Ausatemventils einzusetzen und die Atemluft über ein Gummilippenventil an der Unterseite der Halbmaske abströmen zu lassen. Die seitlichen Anschlußöffnungen sind in diesem Zustand verschlossen.A half mask with connection openings for attaching filters and exhalation valves has become known from DE-GM 16 25 097. In a first embodiment, two filters are attached to the side of the half mask, and the exhalation valve is located on the front side of the half mask in front of the mouth. A second embodiment provides for only a single filter to be inserted into the connection opening of the exhalation valve and for the breathing air to flow out via a rubber lip valve on the underside of the half mask. The side connection openings are closed in this state.

Bei der bekannten Halbmaske ist es von Nachteil, daß die Umrüstung von der Konfiguration mit zwei Filtern auf die mit einem einzelnen Filter nur möglich ist, wenn durch lose Beistellteile die seitlich nicht mehr benötigten Anschlußöffnungen dichtgesetzt werden. Im umgekehrten Fall, d.h. bei der Umrüstung von einem Filter auf zwei Filter muß ein loses Ausatemventil anstelle des einzelnen Filters in die Halbmaske eingesetzt und das Gummilippenventil an der Unterseite verschlossen werden. Die Umrüstmöglichkeit ist somit an die Bevorratung bestimmter Zusatzkomponenten gekoppelt. In der praktischen Anwendung hat sich dieses Verfahren der Umrüstung als nicht brauchbar erwiesen.In the known half mask, it is disadvantageous that the conversion from the configuration with two filters to that with a single filter is only possible if the connection openings which are no longer required laterally are sealed by loose accessories. In the opposite case, ie when converting from one filter to two filters, a loose exhalation valve must be used in place of the individual filter in the half mask and the rubber lip valve on the bottom are closed. The conversion option is thus linked to the storage of certain additional components. In practice, this method of retrofitting has proven to be unusable.

Der Erfindung liegt die Aufgabe zugrunde, eine Atemschutzmaske derart zu verbessern, daß eine nachträgliche Umrüstung auf die eine oder andere Atemschutzmasken-Konfiguration vereinfacht wird und ohne lose Verschlußteile möglich ist.The invention has for its object to improve a respirator in such a way that retrofitting to one or the other respirator configuration is simplified and is possible without loose closure parts.

Die Aufgabe wird dadurch gelöst, ein Anschlußadapter mit Anschlußstutzen in mindestens zwei Vorzugsstellungen an der Vollmaske oder Halbmaske befestigbar ist und daß sich in jeder Vorzugsstellung eine vorgegebene Anzahl von Anschlußöffnungen und Anschlußstutzen überdecken und daß an den Überdeckungsstellen Filter in unterschiedlicher Anzahl anschließbar sind und die nicht in Überdeckung befindlichen Anschlußöffnungen mit am Anschlußadapter angebrachten Dichtmitteln verschlossen sind.The object is achieved in that a connection adapter with connection piece can be attached to the full mask or half mask in at least two preferred positions and that a predetermined number of connection openings and connection pieces overlap in each preferred position and that different numbers of filters can be connected to the overlap points and which are not in Cover openings are closed with sealants attached to the connection adapter.

Der Vorteil der Erfindung liegt im wesentlichen darin, daß mit dem Anschlußadapter unterschiedliche Atemschutzmasken-Konfigurationen realisiert werden können, indem dieser in verschiedenen Vorzugsstellungen an der Atemschutzmaske befestigt wird und von ihm gleichzeitig in jeder Vorzugsstellung bestimmte Anschlußstutzen am Anschlußadapter von Anschlußöffnungen an der Atemschutzmaske überdeckt sind, in die dann Filter eingesteckt werden können. Beistellteile zum Verschluß von unbenutzten Anschlußöffnungen sind nicht erforderlich, da diese mit am Anschlußadapter angebrachten Dichtmitteln verschlossen werden. Die Anschlußstutzen im Anschlußadapter sind entweder als kreisende Durchbrüche in der Wand des Anschlußadapters oder als Gewinde- oder Steckbuchsen ausgeführt.The advantage of the invention lies essentially in the fact that different connection respirator mask configurations can be realized with the connection adapter, in that it is attached to the respirator mask in different preferred positions and at the same time, in each preferred position, certain connection pieces on the connection adapter are covered by connection openings on the respiratory mask, into which filters can then be inserted. Add-on parts for closing unused connection openings are not necessary, since these be sealed with sealants attached to the connection adapter. The connecting pieces in the connection adapter are either designed as circular openings in the wall of the connection adapter or as threaded or plug sockets.

Ein derartiger Anschlußadapter ist sowohl an einer Atemschutzmaske mit Vollmaske und Innenmaske als auch unmittelbar an einer Halbmaske befestigbar.Such a connection adapter can be attached to a respirator with full face mask and inner mask as well as directly to a half mask.

Bei der Vollmaske wird der Anschlußadapter im Mundbereich über die Anschlußöffnungen gelegt, wobei dann in jeder Vorzugsstellung eine vorgegebene Anzahl von Anschlußöffnungen und Anschlußstutzen überdeckt sind. Die Anschlußöffnungen sind kreisrunde Öffnungen in der Vollmaske. Bei einer starren Vollmaske ist es zweckmäßig, den Anschlußadapter aus nachgiebigem Material zu fertigen, damit er sich besonders gut an die Kontur der Vollmaske anlegt. Zum Abdichten der Überdeckungsstellen von Anschlußöffnungen und Anschlußstutzen zwischen dem Anschlußadapter und der Vollmaske gegenüber der Umgebung können kreisringförmige Dichtwülste an der Innenseite des Anschlußadapters angebracht sein. Die Dichtwülste verhindern, daß Atemgas aus den Überdeckungsstellen in die Umgebung abströmen kann. Der Anschlußadapter kann auch als Umschalter ausgeführt sein, der an der Vollmaske befestigt oder auch Teil der Vollmaske ist und durch Drehung in die entsprechende Vorzugsstellung gebracht werden kann.In the case of the full face mask, the connection adapter is placed over the connection openings in the mouth area, with a predetermined number of connection openings and connection pieces being covered in each preferred position. The connection openings are circular openings in the full mask. In the case of a rigid full mask, it is expedient to manufacture the connection adapter from flexible material so that it fits particularly well on the contour of the full mask. To seal the overlap of connection openings and connection pieces between the connection adapter and the full mask from the environment, annular sealing beads can be attached to the inside of the connection adapter. The sealing beads prevent breathing gas from flowing out of the overlap points into the environment. The connection adapter can also be designed as a changeover switch which is attached to the full face mask or is also part of the full face mask and can be brought into the corresponding preferred position by rotation.

Im Fall der Halbmaske wird der Anschlußadapter unmittelbar auf die Halbmaske gesteckt und die Filter in die Halbmaske eingeknöpft. Da die Halbmaske üblicherweise aus gummielastischem Material besteht, wird durch das Einknöpfen gleichzeitig die Dichtfunktion erfüllt.In the case of the half mask, the connection adapter is plugged directly onto the half mask and the filters are buttoned into the half mask. Since the half mask is usually made of rubber-elastic material, the sealing function is fulfilled at the same time by the buttoning.

Im Geräteeinsatz werden üblicherweise Einfilter- und Zweifilter-Atemschutzmasken verwendet. Mit der erfindungsgemäßen Atemschutzmaske läßt sich in einer ersten Vorzugsstellung eine Einfilter-Atemschutzmaske realisieren und in der zweiten Vorzugsstellung eine Zweifilter-Atemschutzmaske. Bei der Einfilter-Atemschutzmaske ist das Filter an der Stirnseite des Anschlußadapters in Höhe des Mundes befestigt, während bei der Zweifilter-Atemschutzmaske die Filter an den Seitenflanken des Anschlußadapters angebracht sind. Für beide Konfigurationen der Atemschutzmaske als Einfilter- oder Zweifilter-Atemschutzmaske können baugleiche Filter verwendet werden.Single-filter and two-filter respirators are usually used in the device. With the respiratory protection mask according to the invention, a single-filter respiratory mask can be implemented in a first preferred position and a two-filter respiratory mask in the second preferred position. With the single-filter respirator, the filter is attached to the front of the connection adapter at the level of the mouth, while with the two-filter respirator, the filters are attached to the side flanks of the connection adapter. Identical filters can be used for both configurations of the respirator as a single-filter or two-filter respirator.

Der Anschlußadapter ist so ausgebildet, daß er die Seitenflanken der Halbmaske oder der Vollmaske umgreift und zur Halterung der Filter ausgebildet ist. Bei einer Halbmaske ist der Anschlußadapter zweckmäßigerweise aus festem Material gefertigt und dient, da er U-förmig an den elastischen Seitenflanken anliegt, als Stütze für die Halbmaske. Da die Eingengewichtskraft der Filter vollständig von dem Anschlußadapter aufgenommen wird, kann die Halbmaske auf die reine Dichtfunktion ausgelegt und aus weichem, anschmiegsamem Material, z.B. Silikon, gefertigt werden.The connection adapter is designed such that it engages around the side flanks of the half mask or the full mask and is designed to hold the filter. In the case of a half mask, the connection adapter is expediently made of solid material and, since it rests in a U-shape on the elastic side flanks, serves as a support for the half mask. Since the intrinsic weight of the filter is completely absorbed by the connection adapter, the half mask can be designed for the purely sealing function and made of soft, supple material, e.g. Silicone.

Zur Erhöhung des Tragekomforts ist der Anschlußadapter für eine Halbmaske mit einer Bänderung zur Befestigung der Atemschutzmaske am Kopf des Geräteträgers versehen. Durch die gleichförmige Krafteinleitung der Haltekraft über die Stirnseite und die Seitenflanken der Halbmaske wird ein gleichmäßiger Andruck an das Gesicht erzeugt.To increase wearing comfort, the connection adapter for a half mask is provided with a strap for attaching the respiratory mask to the head of the device wearer. Due to the uniform force application of the holding force over the front and the side flanks The half mask creates an even pressure on the face.

Der Anschlußadapter ist an der der Atemschutzmaske zugewandten Seite mit Verschlußstopfen als Dichtmittel versehen, welche in die nicht in Überdeckung befindlichen Anschlußöffnungen geknöpft werden können und diese dichtsetzen. Das Einknöpfen bewirkt einen sicheren Verschluß der Anschlußöffnungen und führt auch bei einer äußeren Deformation der Atemschutzmaske nicht zu Undichtigkeiten.The connection adapter is provided on the side facing the respiratory mask with sealing plugs as sealants, which can be buttoned into the connection openings which are not covered and seal them. The buttoning ensures a secure closure of the connection openings and does not lead to leaks even if the respirator mask is deformed externally.

In einer zweckmäßigen Ausgestaltung der Erfindung sind im Bereich der Anschlußstutzen grubenartige, rechteckförmige Ausnehmungen vorgesehen, die zur Zentrierung und Verdrehsicherung der Filter dienen. Die Filter haben ein entsprechendes Gegenstück, das in die Ausnehmung ragt und so ausgebildet ist, daß das Filter nur in einer festgelegten Position am Anschlußadapter befestigt werden kann. Ein nachträgliches Justieren des Filters an dem Anschlußadapter, um eine für den Geräteträger günstige Trageposition zu erreichen, ist nicht mehr notwendig.In an expedient embodiment of the invention, pit-like, rectangular recesses are provided in the area of the connecting piece, which serve to center and prevent rotation of the filter. The filters have a corresponding counterpart which protrudes into the recess and is designed such that the filter can only be attached to the connection adapter in a fixed position. A subsequent adjustment of the filter on the connection adapter in order to achieve a convenient position for the device wearer is no longer necessary.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.

Es zeigen:

Fig. 1
die Seitenansicht einer Atemschutzmaske mit einem Filter,
Fig. 2
die Atemschutzmaske nach Fig. 1 im Längsschnitt,
Fig. 3
eine Teilansicht aus Fig. 2 im Schnitt A-A,
Fig. 4
die Atemschutzmaske nach Fig. 1 bis 3 mit umgestecktem Anschlußadapter zur Befestigung von zwei Filtern,
Fig. 5
eine Atemschutzmaske als Vollmaske mit zwei Filtern,
Fig. 6
Eine Atemschutzmaske als Vollmaske mit zwei Filtern im Schnitt.
Show it:
Fig. 1
the side view of a respirator with a filter,
Fig. 2
1 in longitudinal section,
Fig. 3
3 shows a partial view from FIG. 2 in section AA,
Fig. 4
1 to 3 with plugged-in connection adapter for fastening two filters,
Fig. 5
a full face mask with two filters,
Fig. 6
A full face mask with two filters on average.

Fig. 1 zeigt die Seitenansicht einer Atemschutzmaske (20) mit einer Halbmaske (1) aus gummielastischem Werkstoff, einem Anschlußadapter (2) aus festem Material, einem Filter (3), einer Bänderung (17) und einem Ausatemventil (5). Die Atemschutzmaske (20) ist symmetrisch aufgebaut; daher ist in den Fig. 1, 2 und 4 nur eine Hälfte dargestellt. Symmetrische Komponenten sind mit gleicher Bezugsziffer und Index"a" gekennzeichnetFig. 1 shows the side view of a breathing mask (20) with a half mask (1) made of rubber-elastic material, a connection adapter (2) made of solid material, a filter (3), a strap (17) and an exhalation valve (5). The breathing mask (20) is constructed symmetrically; therefore only one half is shown in FIGS. 1, 2 and 4. Symmetrical components are identified by the same reference number and index "a"

Der Anschlußadapter (2) ist in einer ersten Vorzugsstellung auf die Halbmaske (1) gesetzt und gestattet in dieser Position die Befestigung eines einzelnen Filters (3). Der Anschlußadapter (2) umgreift U-förmig die elastische Halbmaske (1) und ist damit eine Stütze für deren Seitenflanken. Im oberen Bereich des Anschlußadapters (2) sind zwei Anschlußstutzen (4, 4a) als kreisrunde Durchbrüche in der Wand des Anschlußadapters (2) vorgesehen. Der zweite Anschlußstutzen (4a) befindet sich an der rückwärtigen Seite und ist in Fig. 1 nicht dargestellt. Im Bereich der Anschlußstutzen (4, 4a) ist eine rechteckförmige, grubenartige Ausnehmung (6, 6a) vorhanden, die als Zentrierhilfe und Verdrehsicherung für später einzusetzende Filter (3) dient. Im unteren Bereich des Anschlußadapters (2) befinden sich zwei Verschlußstopfen (7, 7a), die an der Innenseite des Anschlußadapters (2) angebracht sind und in Richtung der Halbmaske (1) weisen. Die Bänderung (17) ist in einer ovalen Öse (18) geführt und kann durch Verschieben in vertikaler Richtung an den Kopf eines nicht dargestellten Geräteträgers angepaßt werden.The connection adapter (2) is placed on the half mask (1) in a first preferred position and allows an individual filter (3) to be attached in this position. The connection adapter (2) embraces the elastic half mask (1) in a U-shape and is therefore a support for the side flanks thereof. In the upper area of the connection adapter (2), two connection pieces (4, 4a) are provided as circular openings in the wall of the connection adapter (2). The second connecting piece (4a) is located on the rear side and is not shown in Fig. 1. In the area of the connecting piece (4, 4a) there is a rectangular, pit-like recess (6, 6a) which acts as a centering aid and Protection against rotation for filters (3) to be used later. In the lower area of the connection adapter (2) there are two sealing plugs (7, 7a) which are attached to the inside of the connection adapter (2) and point in the direction of the half mask (1). The strap (17) is guided in an oval eyelet (18) and can be adjusted by moving it in the vertical direction to the head of a device carrier, not shown.

Fig. 2 zeigt einen vertikalen Schnitt durch die Atemschutzmaske (20) nach Fig. 1. Die Halbmaske (1) besitzt zwei Anschlußöffnungen (8, 8a) und eine Filter-Anschlußöffnung (9). Die Anschlußöffnungen (8, 8a, 9) sind Durchbrüche in der gummielastischen Maskenwand der Halbmaske (1). In der gezeigten Position des Anschlußadapters (2) sind die Anschlußöffnungen (8, 8a) mit den Verschlußstopfen (7, 7a), die Teil des Anschlußadapters (2) sind, dichtgesetzt. In die Filter-Anschlußöffnung (9) der Halbmaske (1) ist das Filter (3) eingeknöpft. Das Filter (3) wird im Filter-Anschlußstutzen (10) gehalten und durch eine Filter-Ausnehmung (11) des Anschlußadapters (2) zentriert. Der Filter-Anschlußstutzen (10) ist als kreisrunder Durchbruch in der Wand des Anschlußadapters (2) ausgeführt. In die rechteckförmige, grubenartige Filter-Ausnehmung (11) greift ein entsprechendes Gegenstück des Filters (3) ein und hält damit das Filter (3) in der vorbestimmten Position. Im oberen Bereich des Anschlußadapters (2) ist an der Innenseite ein Filter-Verschlußstopfen (12) angebracht, der in eine Filter-Vertiefung (13) der Halbmaske (1) ragt. Entsprechende Vertiefungen (14, 14a) sind an den Seitenflanken der Halbmaske (1) angebracht. Die Halbmaske (1) hat ferner einen umlaufenden Dichtwulst (21), der an dem Gesicht des nicht dargestellten Geräteträgers anliegt. Um beim Ausatmen einen Gasfluß durch das Filter (3) zu unterbinden, ist ein Richtungsventil (22) vorgesehen. Das Ausatemgas kann so nur über das Ausatemventil (5) abströmen.Fig. 2 shows a vertical section through the breathing mask (20) according to Fig. 1. The half mask (1) has two connection openings (8, 8a) and a filter connection opening (9). The connection openings (8, 8a, 9) are openings in the rubber-elastic mask wall of the half mask (1). In the position of the connection adapter (2) shown, the connection openings (8, 8a) are sealed with the sealing plugs (7, 7a), which are part of the connection adapter (2). The filter (3) is buttoned into the filter connection opening (9) of the half mask (1). The filter (3) is held in the filter connection piece (10) and centered by a filter recess (11) in the connection adapter (2). The filter connection piece (10) is designed as a circular opening in the wall of the connection adapter (2). A corresponding counterpart of the filter (3) engages in the rectangular, pit-like filter recess (11) and thus holds the filter (3) in the predetermined position. In the upper area of the connection adapter (2) there is a filter plug (12) on the inside, which protrudes into a filter recess (13) of the half mask (1). Corresponding depressions (14, 14a) are provided on the side flanks of the half mask (1). The half mask (1) also has a circumferential sealing bead (21), which rests on the face of the device carrier, not shown. In order to prevent gas flow through the filter (3) during exhalation, a directional valve (22) is provided. The exhaled gas can only flow out through the exhalation valve (5).

Fig. 3 zeigt eine Teilansicht aus Fig. 2 in der Schnittebene A-A, in der die symmetrisch angeordneten Anschlußöffnungen (8, 8a) und Verschlußstopfen (7, 7a) erkennbar sind. Das Filter (3) besteht aus einem schraubbaren Gehäuse (15), in welches eine Filterpatrone (16) mit einer Dichtung (19) eingesetzt ist. Zum Filterwechsel wird das Gehäuse (15) aufgeschraubt und die Filterpatrone (16) gewechselt. Ein Ausknöpfen des Filters (3) aus der Filter-Anschlußöffnung (9) ist nicht erforderlich.Fig. 3 shows a partial view of Fig. 2 in the sectional plane A-A, in which the symmetrically arranged connection openings (8, 8a) and sealing plugs (7, 7a) can be seen. The filter (3) consists of a screwable housing (15) into which a filter cartridge (16) with a seal (19) is inserted. To change the filter, the housing (15) is screwed on and the filter cartridge (16) is changed. It is not necessary to unbutton the filter (3) from the filter connection opening (9).

Fig. 4 zeigt eine Atemschutzmaske (20) mit einem Anschlußadapter (2), der in einer zweiten Vorzugsstellung auf die Halbmaske (1) aufgesetzt ist und in dieser Vorzugsstellung den Anschluß von zwei Filtern (3) ermöglicht.
Der Umbau von der Einfilter-Atemschutzmaske nach den Fig. 1 bis 3 auf eine Zweifilter-Atemschutzmaske nach Fig. 4 geschieht in der Weise, daß zunächst das Filter (3) und die Verschlußstopfen (7, 7a) aus den Anschlußöffnungen (8, 8a, 9) ausgeknöpft werden, Fig. 3. Danach wird der Anschlußadapter (2) von der Halbmaske (1) abgezogen und, um 180 Grad um eine horizontale Achse gedreht, wieder aufgesetzt. In der neuen Position, Fig. 4, liegt der Filter-Anschlußstutzen (10) gegenüber der Filter-Vertiefung (13), und die Verschlußstopfen (7, 7a) ragen in die Vertiefungen (14, 14a), Fig. 2, Fig. 4. Da sich nun die Seitenverhältnisse des Anschlußadapters (2) in bezug auf die Halbmaske (1) umgekehrt haben, liegt der Verschlußstopfen (7a) in der Vertiefung (14) und der Verschlußstopfen (7) in der Vertiefung (14a).Fig. 4 shows a breathing mask (20) with a connection adapter (2) which is placed in a second preferred position on the half mask (1) and in this preferred position enables the connection of two filters (3).
The conversion from the single-filter respirator according to FIGS. 1 to 3 to a two-filter respirator according to FIG. 4 takes place in such a way that first the filter (3) and the sealing plugs (7, 7a) from the connection openings (8, 8a , 9) are unplugged, Fig. 3. Then the connection adapter (2) is pulled off the half mask (1) and, rotated by 180 degrees around a horizontal axis, put back on. In the new position, Fig. 4, the filter connecting piece (10) lies opposite the filter recess (13), and the sealing plugs (7, 7a) protrude into the recesses (14, 14a), Fig. 2, Fig. 4. Since the aspect ratios of the connection adapter (2) with respect to the half mask (1) vice versa, the plug (7a) lies in the recess (14) and the plug (7) in the recess (14a).

Die Filter-Anschlußöffnung (9) ist mit dem Filter-Verschlußstopfen (12) dichtgesetzt. Die Anschlußstutzen (4, 4a) überdecken die Anschlußöffnungen (8, 8a) der Halbmaske (1), und es können hier zwei Filter (3) eingesetzt werden. In Fig. 4 sind diese Filter (3) nicht dargestellt.The filter connection opening (9) is sealed with the filter plug (12). The connection pieces (4, 4a) cover the connection openings (8, 8a) of the half mask (1), and two filters (3) can be used here. These filters (3) are not shown in FIG.

Die Zentrierung der Filter (3) an dem Anschlußadapter (2) erfolgt über die Ausnehmungen (6, 6a). Für beide Konfigurationen der Atemschutzmaske als Einfilter- oder Zweifilter-Atemschutzmaske können baugleiche Filter (3) verwendet werden.The filters (3) are centered on the connection adapter (2) via the recesses (6, 6a). Identical filters (3) can be used for both configurations of the respirator as a single-filter or two-filter respirator.

Fig. 5 zeigt die Vorderansicht einer Atemschutzvollmaske (30) mit einem Maskenkörper als Vollmaske (36), einem Anschlußadapter 32, zwei Filtern (33, 33a), einer Bänderung (47) und einem Ausatemventil (35). Die Vollmaske (36) hat Anschlußöffnungen (38, 38a), Fig. 6, und eine Filter-Anschlußöffnung (39), die als kreisrunde Durchbrüche in der Maskenwand der Vollmaske (36) ausgeführt sind. Der Anschlußadapter (32) ist in einer zweiten Vorzugsstellung auf die Vollmaske (36) gesetzt und gestattet in dieser Position die Befestigung von zwei Filtern (33, 33a). Im unteren Bereich des Anschlußadapters (32) sind zwei Anschlußstutzen (34, 34a) vorgesehen zur Aufnahme der Filter (33, 33a). Ein Filter-Anschlußstutzen (40) befindet sich im oberen Bereich, und wird in der ersten Vorzugsstellung mit einem in der Mitte angebrachten Filter benutzt. Die Anschlußstutzen (34, 34a, 40) sind als Gewindebuchsen ausgeführt. An der Innenseite des Anschlußadapters (32) sind Verschlußstopfen (37, 37a) und ein Filter-Verschlußstopfen (42) angebracht, die in Richtung der Vollmaske (36) weisen und zum Verschluß nicht benutzter Anschlußöffnungen (38, 38a, 39) dienen. In der gezeigten Stellung ist die Filter-Anschlußöffnung (39) mit dem Filter-Verschlußstopfen (42) dichtgesetzt und die Anschlußöffnungen (38, 38a), (Fig. 6) sind in Überdeckung mit dem Anschlußstutzen (34, 34a).Fig. 5 shows the front view of a full face mask (30) with a mask body as a full mask (36), a connection adapter 32, two filters (33, 33a), a strap (47) and an exhalation valve (35). The full mask (36) has connection openings (38, 38a), Fig. 6, and a filter connection opening (39) which are designed as circular openings in the mask wall of the full mask (36). The connection adapter (32) is placed in a second preferred position on the full face mask (36) and in this position allows the attachment of two filters (33, 33a). In the lower area of the connection adapter (32), two connection pieces (34, 34a) are provided for receiving the filters (33, 33a). A filter connecting piece (40) is located in the upper area and is used in the first preferred position with a filter attached in the middle. The connecting pieces (34, 34a, 40) are designed as threaded bushings. On the inside of the connection adapter (32) sealing plugs (37, 37a) and a filter sealing plug (42) are attached, which point in the direction of the full face mask (36) and serve to seal unused connection openings (38, 38a, 39). In the position shown, the filter connection opening (39) is sealed with the filter plug (42) and the connection openings (38, 38a), (Fig. 6) are in overlap with the connection piece (34, 34a).

Fig. 6 zeigt die Atemschutzvollmaske (30) nach Fig. 5 im Schnitt. Die Gasführung ist durch Pfeile veranschaulicht. Das Gas tritt über die Anschlußstutzen (34, 34a), die Anschlußöffnungen (38, 38a) und die Richtungsventile (351, 352) ein, überstreicht die Sichtscheibe (43) und gelangt über ein Rückschlagventil (44) in den Innenraum der Innenmaske (31). Die ausgeatmete Luft strömt über das Ausatemventil (35) ins Freie. In der zweiten Vorzugsstellung des Anschlußadapters (32) mit einem Filter liegt eine äquivalente Gasführung vor. Der Anschlußadapter (32) ist an der Innenseite der Anschlußstutzen (34, 34a, 40) mit umlaufenden Dichtwülsten (45, 45a) versehen, die die Überdeckungstellen gegen die Umgebung abdichten.Fig. 6 shows the full face mask (30) of FIG. 5 in section. The gas flow is illustrated by arrows. The gas enters via the connection piece (34, 34a), the connection openings (38, 38a) and the directional valves (351, 352), covers the viewing window (43) and reaches the interior of the inner mask (31.) Via a check valve (44) ). The exhaled air flows out through the exhalation valve (35). In the second preferred position of the connection adapter (32) with a filter, there is an equivalent gas flow. The connection adapter (32) is provided on the inside of the connection piece (34, 34a, 40) with circumferential sealing beads (45, 45a) which seal the overlap points against the environment.

Der Umbau von der Zweifilter-Atemschutzvollmaske in eine Einfilter-Atemschutzvollmaske geschieht in der Weise, daß der Anschlußadapter (32) abgezogen und um 180 Grad verdreht wieder aufgesetzt wird. In der neuen, in den Fig. nicht dargestellten Position, sind die Verschlußstopfen (37, 37a) in den Anschlußöffnungen (38, 38a) und der Filter-Anschlußstutzen (40) überdeckt die Filter-Anschlußöffnung (39). Die hier gezeigten Anschlußstutzen (34, 34a, 40) sind für einen Schraubanschluß der Filter (33, 33a) ausgelegt; es können aber auch Anschlußstutzen mit Steckanschluß verwendet werden. Für beide Konfigurationen als Einfilter- oder Zweifilter-Atemschutzmaske können baugleiche Filter (33, 33a) verwendet werden.The conversion from the two-filter full-face mask to a single-filter full-face mask is done in such a way that the connection adapter (32) is removed and rotated again by 180 degrees. In the new position, not shown in the figures, the sealing plugs (37, 37a) are in the connection openings (38, 38a) and the filter connection piece (40) covers the filter connection opening (39). The connection pieces (34, 34a, 40) shown here are for one Screw connection of the filters (33, 33a); but it can also be used connector with plug connection. Identical filters (33, 33a) can be used for both configurations as a single-filter or two-filter respirator.

Claims (6)

Atemschutzmaske mit Anschlußöffnungen für Filter und einem Maskenkörper, der als Vollmaske oder Halbmaske ausgebildet ist, dadurch gekennzeichnet, daß ein Anschlußadapter (2, 32) mit Anschlußstutzen (4, 4a, 10, 34, 34a, 40) in mindestens zwei Vorzugsstellungen an der Vollmaske (36) oder Halbmaske (1) befestigbar ist und daß sich in jeder Vorzugsstellung eine vorgegebene Anzahl von Anschlußöffnungen (8, 8a, 9, 38, 38a, 39) und Anschlußstutzen (4, 4a, 10, 34, 34a, 40) überdecken und daß an den Überdeckungsstellen Filter (3, 33, 33a) in unterschiedlicher Anzahl anschließbar sind und die nicht in Überdeckung befindlichen Anschlußöffnungen (8, 8a, 9, 38, 38a, 39) mit am Anschlußadapter (2, 32) angebrachten Dichtmitteln (7, 7a, 12, 37, 37a, 42) verschlossen sind.Respiratory protection mask with connection openings for filters and a mask body which is designed as a full mask or half mask, characterized in that a connection adapter (2, 32) with connection piece (4, 4a, 10, 34, 34a, 40) in at least two preferred positions on the full mask (36) or half mask (1) can be fastened and that a predetermined number of connection openings (8, 8a, 9, 38, 38a, 39) and connecting pieces (4, 4a, 10, 34, 34a, 40) overlap in each preferred position and that filters (3, 33, 33a) can be connected in different numbers at the overlap points and the connection openings (8, 8a, 9, 38, 38a, 39) which are not in overlap with sealing means (7) attached to the connection adapter (2, 32) , 7a, 12, 37, 37a, 42) are closed. Atemschutzmaske nach Anspruch 1, dadurch gekennzeichnet, daß in der ersten Vorzugsstellung ein einzelnes Filter (3, 33) und in der zweiten Vorzugsstellung zwei Filter (3, 33, 33a) anschließbar sind.Respiratory protection mask according to claim 1, characterized in that in the first preferred position a single filter (3, 33) and in the second preferred position two filters (3, 33, 33a) can be connected. Atemschutzmaske nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Anschlußadapter (2, 32) die Seitenflanken der Halbmaske (1) oder der Vollmaske (32) umgreift und die Anschlußstutzen (4, 4a, 10, 34, 34a, 40) zur Halterung der Filter (3, 33, 33a) dienen.Respiratory protection mask according to claim 1 or 2, characterized in that the connection adapter (2, 32) engages around the side flanks of the half mask (1) or the full mask (32) and the connection piece (4, 4a, 10, 34, 34a, 40) for holding the filter (3, 33, 33a) serve. Atemschutzmaske nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Anschlußadapter (2) für die Halbmaske (1) Befestigungsmittel für die Bänderung (17) ist.Respiratory protection mask according to one of claims 1 to 3, characterized in that the connection adapter (2) for the half mask (1) is fastening means for the strap (17). Atemschutzmaske nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Anschlußadapter (2, 32) an der der Halbmaske (1) oder der Vollmaske (36) zugewandten Seite mit Verschlußstopfen (7, 7a, 12, 37, 37a, 42) versehen ist, welche die nicht in Überdeckung befindlichen Anschlußöffnungen (8, 8a, 9, 38 38a, 39) dichtsetzen.Respiratory mask according to one of claims 1 to 4, characterized in that the connection adapter (2, 32) on the side facing the half mask (1) or the full mask (36) with sealing plugs (7, 7a, 12, 37, 37a, 42) is provided, which seals the connection openings (8, 8a, 9, 38, 38a, 39) which are not overlapping. Atemschutzmaske nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß im Bereich der Anschlußstutzen (4, 4a, 10) grubenartige Ausnehmungen (6, 6a, 11) zur Zentrierung und Verdrehsicherung der Filter (3) vorgesehen sind.Respiratory protection mask according to one of claims 1 to 5, characterized in that pit-like recesses (6, 6a, 11) are provided in the area of the connecting piece (4, 4a, 10) for centering and securing the filter (3) against rotation.
EP91105994A 1990-05-30 1991-04-16 Breathing protection mask Expired - Lifetime EP0459123B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017336 1990-05-30
DE4017336A DE4017336C1 (en) 1990-05-30 1990-05-30

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EP0459123A1 true EP0459123A1 (en) 1991-12-04
EP0459123B1 EP0459123B1 (en) 1993-12-08

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EP (1) EP0459123B1 (en)
DE (2) DE4017336C1 (en)

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Also Published As

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EP0459123B1 (en) 1993-12-08
US5154168A (en) 1992-10-13
DE59100682D1 (en) 1994-01-20
DE4017336C1 (en) 1991-06-13

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