EP0029885B1 - Escape filtering apparatus with protective hood - Google Patents
Escape filtering apparatus with protective hood Download PDFInfo
- Publication number
- EP0029885B1 EP0029885B1 EP80105687A EP80105687A EP0029885B1 EP 0029885 B1 EP0029885 B1 EP 0029885B1 EP 80105687 A EP80105687 A EP 80105687A EP 80105687 A EP80105687 A EP 80105687A EP 0029885 B1 EP0029885 B1 EP 0029885B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mask
- hood
- lip
- filtering apparatus
- escape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
- A62B17/04—Hoods
Definitions
- the invention relates to an escape filter device with a protective hood, according to the preamble of claim 1.
- a known protective device against air pollution consists of at least one hood, which has a respirator with a filter.
- the respirator mask and the filter are connected to each other by a connecting piece penetrating the protective hood.
- the wearer breathes in through the filter and exhales into the interior of the hood through an opening in the face part of the respirator.
- the exhaled air then flows out through leaks between the hood and the body parts of the wearer. It creates an air curtain that prevents unfiltered outside air from entering the interior of the hood.
- a known escape filter device with a Schultz hood made of a transparent film does not show these difficulties.
- a breath connection piece is guided into the interior of the protective hood from the filter receptacle and ends in a mouthpiece.
- the protective hood has a nose pad opposite the upper lip area, for which a strap can be placed outside around the protective hood and closed in the neck. The nostrils are sealed with the -nose pad.
- mouthpieces have the disadvantage that they have to be held with the teeth. This can lead to difficulties for prosthesis wearers.
- mouthpieces for children must be made smaller than for adults (DE-C-26 39 545).
- hood with a replaceable breathing filter is known.
- the connection to the wearer's respiratory organs is made using a half mask.
- the hood shows no gas-tight connection between the filter holder and the half mask.
- the half mask band is arranged on the inside and then carried out to the outside. It is not clear by which means the pressure of the half mask against the face should be fixed. In addition, it is probably impossible to make the strapping on the hood gas-tight.
- the mask used here is a normal version. It is not suitable for all head sizes, especially since only a narrow sealing edge is provided, which was previously considered particularly dense with regard to the contact pressure (US-A-2529106).
- a gas protection hood for head injuries is known. It consists of a transparent, thin plastic film that can be placed on the head at any desired location and folded accordingly.
- the filter is connected to a half mask through a connector through the front of the hood.
- two straps running crosswise over the back of the head are attached on both sides below and above the temples.
- This known gas protection hood is not intended as an escape device and therefore cannot be used. There is a completely different task here, namely breathing protection for people with head injuries. A sufficiently tight fit of the half mask is achieved by the tight application by means of many bands. It is not possible to put on an escape filter with an adaptation to the different head shapes by means of an appropriately shaped half mask (DE-B-11 99620).
- This half mask with a breathing filter has a strap that can be slipped over the head and attached directly to it.
- the half mask in this known embodiment shows no special seal on the face of the wearer. It is only attracted by the strapping. Its size must be adapted to the respective wearer.
- the reliable seal for ventilation, as required for an escape filter device, to ensure protection for both children and adults with the same device, cannot be achieved here.
- this known device first requires the mask to be put on and then the hood to be slipped on. In emergency situations, this means a further delay and therefore additional danger (FR-A-801 176).
- the object of the invention is a simple escape filter device with a protective hood that provides safe breathing air conditions for the wearer in emergency situations and is suitable for all existing head sizes as well as for glasses and beard wearers.
- the advantages of the escape filter device according to the invention lie in the design of the half-mask body with the face contact surface.
- the face support surface fits broadly on the face areas. It bridges the different head sizes and face shapes.
- the profile design below the face support surface within the half-mask body creates a system pressure that is the same everywhere, which guarantees a safe system.
- the large contact surfaces with the then small specific contact pressure are extremely comfortable for the wearer.
- the strap can be tightened vigorously without bothering the wearer. This favors a dense plant.
- the escape filter device consists of the protective hood 1 with the elastic neck brace 2. It can consist of a transparent film, but also of other material. If this is not transparent, then the window section 3 is incorporated.
- the half-mask body 4 is arranged opposite the nose and mouth section of the wearer. It penetrates tightly with the receptacle 5 for the filter 6, the protective hood 1.
- the protective hood 1 has lateral eyelets 7 for receiving the strap 8.
- the strap 8 can be tightened and held via pull tabs 9 by a known quick adjustment over the neck. Doing so. the face support surface 10 pulled tight against the facial parts.
- the shape of the face part of the half-mask body 4 is shown in FIG. 2.
- the cutout 11 for the nose-mouth area is relatively small in relation to the outer circumference 12 of the half-mask body 4.
- the sealing on the face takes place via the large face contact surface 10.
- the everywhere equally large, but comfortable contact pressure is achieved by the special design of the face part below the face support surface 10.
- 3 shows the triangular support profile 13, which continues along the entire cutout 11 with a changing cross-sectional area. It can be made of foamed material and then filled or, as drawn in dashed lines, it can be a hollow body with walls.
- 4 shows a further embodiment in which one side of the triangle has been omitted.
- the sufficient rigidity of the face support surface 10 is achieved by means of intermediate walls 14 arranged at a distance from one another.
- the section D-E in Fig. 5 shows that the support profiles 13 end in a lip-shaped system 15, which rests securely on the bridge of the nose.
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Motor Or Generator Frames (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
Die Erfindung betrifft ein Fluchtfiltergerät mit Schutzhaube, entsprechend dem Oberbegriff des Anspruches 1.The invention relates to an escape filter device with a protective hood, according to the preamble of
Es wird immer wieder bekannt, daß Menschen bei Bränden, z. B. in Hotels, schwer verunglücken oder gar verbrennen. Sie scheuen sich, ohne Atemgerät in Brandgase hineinzulaufen. Einfache, griffbereite und auch von Ungeübten aufsetzbare Fluchtfilter könnten die Rettung erleichtern. Voraussetzung ist aber, daß diese Fluchtfilter für alle Kopfgrößen, bei Brillenträgern und bei Kinn- und Backenbärten ihre Schutzaufgaben erfüllen.It is known again and again that people in fires, z. B. in hotels, badly injured or even burned. They shy away from running into fire gases without breathing apparatus. Simple, ready-to-hand escape filters, which can also be used by inexperienced users, could make rescue easier. However, the prerequisite is that these escape filters fulfill their protective tasks for all head sizes, for glasses wearers and for beards of the chin and cheeks.
Ein bekanntes Schutzgerät gegen Luftverseuchung besteht aus mindestens einer Kopfhaube, die eine Atemschutzmaske mit einem Filter besitzt. Dabei sind die Atemschutzmaske und das Filter durch ein die Schutzhaube durchdringendes Verbindungsstück miteinander verbunden. Der Träger atmet durch das Filter ein und durch eine Öffnung im Gesichtsteil der Atemschutzmaske in das Innere der Haube aus. Die Ausatemluft strömt dann durch Undichtigkeiten zwischen der Kopfhaube und den Körperpartien des Trägers ins Freie. Sie schafft dabei einen Luftvorhang, der den Eintritt von unfiltrierter Außenluft in das Innere der Haube verhindert.A known protective device against air pollution consists of at least one hood, which has a respirator with a filter. The respirator mask and the filter are connected to each other by a connecting piece penetrating the protective hood. The wearer breathes in through the filter and exhales into the interior of the hood through an opening in the face part of the respirator. The exhaled air then flows out through leaks between the hood and the body parts of the wearer. It creates an air curtain that prevents unfiltered outside air from entering the interior of the hood.
Über die Ausbildung des Gesichtsteils der Atemschutzmaske ist nichts ausgesagt. Die Darstellung zeigt aber eine im übrigen übliche Halbmaske. Sie dichtet dann auch in bekannter Art und Weise in einer Dichtungslinie an den Gesichtspartien des Trägers ab. Derartige Halbmasken sind mit der Güte der Abdichtung von der Anpassung an die jeweilige Gesichtsform und -größe abhängig. Es werden also verschiedene Größen benötigt. Sie sind damit für die Verwendung in Fluchtgeräten, die im Notfall für alle Bedrängten passen müssen, nicht geeignet (DE-U-19 36 347).Nothing is said about the formation of the face part of the breathing mask. However, the illustration shows a half mask that is otherwise customary. It then also seals in a known manner in a sealing line on the face parts of the wearer. Such half masks depend on the quality of the seal on the adaptation to the respective face shape and size. So different sizes are needed. They are therefore not suitable for use in escape devices that have to fit all those in need in an emergency (DE-U-19 36 347).
Ein bekanntes Fluchtfiltergerät mit einer Schultzhaube aus einer durchsichtigen Folie zeigt diese Schwierigkeiten nicht. Statt der Atemschutzmaske ist von der Filteraufnahme her ein Atemanschlußstück in das Innere der Schutzhaube geführt, das in einem Mundstück endet. Die Schutzhaube besitzt dem Oberlippenbereich gegenüber ein Nasenpolster, für das außerhalb um die Schutzhaube herumlegbar und im Nacken verschließbar eine Bänderung vorhanden ist. Mit dem -Nasenpolster werden die Nasenöffnungen dichtgesetzt. Mundstücke haben jedoch den Nachteil, daß sie mit den Zähnen gehalten werden müssen. Das kann bie Prothesenträgern zu Schwierigkeiten führen. Außerdem müssen Mundstücke für Kinder kleiner ausgeführt sein als für Erwachsene (DE-C-26 39 545).A known escape filter device with a Schultz hood made of a transparent film does not show these difficulties. Instead of the breathing mask, a breath connection piece is guided into the interior of the protective hood from the filter receptacle and ends in a mouthpiece. The protective hood has a nose pad opposite the upper lip area, for which a strap can be placed outside around the protective hood and closed in the neck. The nostrils are sealed with the -nose pad. However, mouthpieces have the disadvantage that they have to be held with the teeth. This can lead to difficulties for prosthesis wearers. In addition, mouthpieces for children must be made smaller than for adults (DE-C-26 39 545).
Es ist eine andere Haube mit einem austauschbaren Atemfilter bekannt. Der Anschluß an die Atemorgane des Trägers erfolgt über eine Halbmaske. Die Haube zeigt keine gasdichte Verbindung zwischen der Filteraufnahme mit der Halbmaske. Außerdem ist die Halbmaskenbänderung innen angeordnet und dann nach außen durchgeführt. Es wird nicht deutlich, durch welche Mittel die Anpressung der Halbmaske gegen das Gesicht fixiert werden soll. Außerdem ist es wohl unmöglich, die Durchführung der Bänderung an der Haube gasdicht zu bekommen. Die hier verwendete Maske stellt eine normale Ausführung dar. Sie ist nicht für alle Kopfgrößen passend, zumal nur eine schmale Dichtkante vorgesehen ist, die bisher mit Rücksicht auf den Auflagedruck als besonders dicht galt (US-A-2529106).Another hood with a replaceable breathing filter is known. The connection to the wearer's respiratory organs is made using a half mask. The hood shows no gas-tight connection between the filter holder and the half mask. In addition, the half mask band is arranged on the inside and then carried out to the outside. It is not clear by which means the pressure of the half mask against the face should be fixed. In addition, it is probably impossible to make the strapping on the hood gas-tight. The mask used here is a normal version. It is not suitable for all head sizes, especially since only a narrow sealing edge is provided, which was previously considered particularly dense with regard to the contact pressure (US-A-2529106).
Es ist eine Gasschutzhaube für Kopfverletzte bekannt. Sie besteht aus einer durchsichtigen dünnen Kunststofffolie, die an allen gewünschten Stellen an den Kopf angelegt und entsprechend gefaltet werden kann. Der Filteranschluß erfolgt über ein vorne durch die Haube geführtes Anschlußstück zu einer Halbmaske. Auf der Au- ßenseite der Haube sind beidseitig unterhalb und oberhalb der Schläfen zwei kreuzweise über den Hinterkopf verlaufende Bänderungen befestigt.A gas protection hood for head injuries is known. It consists of a transparent, thin plastic film that can be placed on the head at any desired location and folded accordingly. The filter is connected to a half mask through a connector through the front of the hood. On the outside of the hood, two straps running crosswise over the back of the head are attached on both sides below and above the temples.
Diese bekannte Gasschutzhaube ist als Fluchtgerät nicht gedacht und daher auch nicht verwendbar. Es liegt hier eine völlig andere Aufgabe vor, nämlich der Atemschutz für Personen mit Kopfverletzungen. Es wird durch das enge Anlegen mittels vieler Bänder ein ausreichend dichter Sitz der Halbmaske erreicht. Das bei einem Fluchtfilter notwendige Aufsetzen mit einer Anpassung an die verschiedenen Kopfformen mittels einer entsprechend geformten Halbmaske ist nicht möglich (DE-B-11 99620).This known gas protection hood is not intended as an escape device and therefore cannot be used. There is a completely different task here, namely breathing protection for people with head injuries. A sufficiently tight fit of the half mask is achieved by the tight application by means of many bands. It is not possible to put on an escape filter with an adaptation to the different head shapes by means of an appropriately shaped half mask (DE-B-11 99620).
Noch eine weitere bekannte Halbmaske innerhalb einer Schutzmaske erfüllt nicht die Aufgabe aus der Erfindung. Diese Halbmaske mit einem Atemfilter besitzt eine über den Kopf zu streifende direkt an dieser befestigte Bänderung. Die Halbmaske in dieser bekannten Ausführung zeigt keine besondere Abdichtung am Gesicht des Trägers. Sie wird lediglich durch die Bänderung angezogen. Sie muß in ihrer Größe für den jeweiligen Träger angepaßt sein. Die für die Beatmung sichere Abdichtung, wie für ein Fluchtfiltergerät notwendig, um mit einem gleichen Gerät einen Schutz sowohl bei Kindern wie auch bei Erwachsenen sicherzustellen, ist hier nicht zu erreichen. Außerdem verlangt dieses bekannte Gerät zuerst das Anlegen der Maske und dann folgend das Überstreifen der Haube. In Notsituationen bedeutet dies eine weitere Verzögerung und damit zusätzliche Gefährdung (FR-A-801 176).Yet another known half mask within a protective mask does not achieve the object from the invention. This half mask with a breathing filter has a strap that can be slipped over the head and attached directly to it. The half mask in this known embodiment shows no special seal on the face of the wearer. It is only attracted by the strapping. Its size must be adapted to the respective wearer. The reliable seal for ventilation, as required for an escape filter device, to ensure protection for both children and adults with the same device, cannot be achieved here. In addition, this known device first requires the mask to be put on and then the hood to be slipped on. In emergency situations, this means a further delay and therefore additional danger (FR-A-801 176).
Aufgabe der Erfindung ist ein einfaches Fluchtfiltergerät mit Schutzhaube, das in Notsituationen für den Träger sichere Atemluftbedingungen bietet und dabei für alle vorhandenen Kopfgrößen ebenso wie für Brillen- und Bartträger geeignet ist.The object of the invention is a simple escape filter device with a protective hood that provides safe breathing air conditions for the wearer in emergency situations and is suitable for all existing head sizes as well as for glasses and beard wearers.
Die Lösung der Aufgabe erfolgt gemäß dem Kennzeichen des Anspruches 1. Vorteilhafte Weiterbildungen sind in den Ansprüchen 2 bis 4 beschrieben.The problem is solved according to the characterizing part of
Die Vorteile des Fluchtfiltergerätes nach der Erfindung liegen in der Ausführung des Halbmaskenkörpers mit der Gesichtsauflagefläche. Die Gesichtsauflagefläche legt sich breit den Gesichtspartien an. Sie überbrückt damit die verschiedenen Kopfgrößen und Gesichtsformen. Die Dichtungsränder der bekannten Halbmasken, die als Liniendichtungen wirken, können das nicht. Sie sind immer irgendwo frei und ohne Anlage und damit undicht.The advantages of the escape filter device according to the invention lie in the design of the half-mask body with the face contact surface. The face support surface fits broadly on the face areas. It bridges the different head sizes and face shapes. The sealing edges of the well-known half masks, which act as line seals, cannot do this. They are always free somewhere and without an attachment and therefore leaking.
Die Profilgestaltung unterhalb der Gesichtsauflagefläche innerhalb des Halbmaskenkörpers schafft einen überall gleich großen Anlagedruck, der eine sichere Anlage garantiert. Die großen Auflageflächen mit dem dann kleinen spezifischen Anlagedruck sind für den Träger außerordentlich bequem. Die Bänderung kann, ohne den Träger zu belästigen, kräftig angezogen werden. Dies begünstigt eine dichte Anlage. Die vorteilhaften Weiterbildungen der Unteransprüche sprechen für sich selbst.The profile design below the face support surface within the half-mask body creates a system pressure that is the same everywhere, which guarantees a safe system. The large contact surfaces with the then small specific contact pressure are extremely comfortable for the wearer. The strap can be tightened vigorously without bothering the wearer. This favors a dense plant. The advantageous developments of the subclaims speak for themselves.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden beschrieben. Es zeigen
Figur 1 eine Ansicht des kompletten Fluchtfiltergerätes,Figur 2 die Form des Halbmaskenkörpers in Ansicht A,Figur 3 den Schnitt B-C aus Fig. 2,Figur 4 eine weitere Ausführung an der Schnittstelle B-C,Figur 5 den Schnitt D-E aus Fig. 2.
- FIG. 1 shows a view of the complete escape filter device,
- FIG. 2 shows the shape of the half-mask body in view A,
- FIG. 3 shows the section BC from FIG. 2,
- FIG. 4 shows a further embodiment at the BC interface,
- FIG. 5 shows the section DE from FIG. 2.
Das Fluchtfiltergerät besteht aus der Schutzhaube 1 mit der elastischen Halskrause 2. Sie kann aus einer durchsichtigen Folie, aber auch aus anderem Material bestehen. Wenn dieses nicht durchsichtig ist, dann ist die Fensterpartie 3 eingearbeitet.. Der Nasen- und Mundpartie des Trägers gegenüber ist der Halbmaskenkörper 4 angeordnet. Er durchsetzt mit der Aufnahme 5 für das Filter 6 dicht die Schutzhaube 1. Die Schutzhaube 1 besitzt seitliche Ösen 7 zur Aufnahme der Bänderung 8. Die Bänderung 8 kann über Zuglaschen 9 durch eine bekannte Schnellverstellung über den Nacken angezogen und gehalten werden. Dabei wird. die Gesichtsauflagefläche 10 dicht gegen die Gesichtspartien gezogen.The escape filter device consists of the
Die Form des Gesichtsteiles des Halbmaskenkörpers 4 zeigt die Fig. 2. Der Ausschnitt 11 für den Nasen-Mund-Bereich ist relativ klein im Verhältnis zum äußeren Umfang 12 des Halbmaskenkörpers 4. Die Abdichtung an dem Gesicht erfolgt über die große Gesichtsauflagefläche 10. Der überall gleich große, doch bequeme Anpreßdruck wird durch die besondere Ausbildung des Gesichtsteiles unterhalb der Gesichtsauflagefläche 10 erreicht. Die Fig.3 zeigt das dreieckförmige Auflageprofil 13, das sich mit wechselnder Querschnittsfläche an dem ganzen Ausschnitt 11 entlang fortsetzt. Es kann aus geschäumtem Material und dann gefüllt oder auch, wie gestrichelt gezeichnet, ein Hohlkörper mit Wänden sein. Die Fig. 4 zeigt eine weitere Ausführung, in der die eine Dreieckseite entfallen ist. Die ausreichende Steifigkeit der Gesichtsauflagefläche 10 wird durch im Abstand zueinander senkrecht angeordnete Zwischenwände 14 erreicht.The shape of the face part of the half-
Der Schnitt D-E in Fig. 5 zeigt, daß die Auflageprofile 13 in eine lippenförmige Anlage 15 auslaufen, die sich sicher dem Nasenrücken anlegt.The section D-E in Fig. 5 shows that the support profiles 13 end in a lip-shaped
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT80105687T ATE6989T1 (en) | 1979-12-01 | 1980-09-22 | ESCAPE FILTER DEVICE WITH PROTECTIVE HOOD. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2948423 | 1979-12-01 | ||
| DE2948423A DE2948423C2 (en) | 1979-12-01 | 1979-12-01 | Escape filter device with protective hood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0029885A1 EP0029885A1 (en) | 1981-06-10 |
| EP0029885B1 true EP0029885B1 (en) | 1984-04-11 |
Family
ID=6087369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80105687A Expired EP0029885B1 (en) | 1979-12-01 | 1980-09-22 | Escape filtering apparatus with protective hood |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0029885B1 (en) |
| JP (1) | JPS6054074B2 (en) |
| AT (1) | ATE6989T1 (en) |
| DE (1) | DE2948423C2 (en) |
| DK (1) | DK147592C (en) |
| NO (1) | NO148909C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3315941C1 (en) * | 1983-05-02 | 1984-06-20 | Drägerwerk AG, 2400 Lübeck | Half mask in to and fro respiration |
| DE3921603A1 (en) * | 1989-06-30 | 1991-01-10 | Draegerwerk Ag | RESPIRATORY MASK WITH A CUFF CHANGE |
| TW287952B (en) * | 1994-08-31 | 1996-10-11 | Lifepro Inc | |
| US5964218A (en) * | 1994-08-31 | 1999-10-12 | Lifepro, Inc. | Face mask with back-up smoke inhalation protection and method of operation |
| AUPM938594A0 (en) * | 1994-11-11 | 1994-12-08 | Gorman, Warrick Ian | Smokehood 173 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821192A (en) * | 1958-01-28 | Monro | ||
| DE307728C (en) * | ||||
| FR622121A (en) * | 1926-08-14 | 1927-05-24 | Ver Nl Rubberfabrieken Nv | Specially constructed gas mask with interior retaining rim that rests against the face |
| DE491273C (en) * | 1928-05-10 | 1930-02-07 | Draegerwerk Ag | Half mask covering mouth and nose |
| FR773129A (en) * | 1934-05-09 | 1934-11-12 | Kremlin Atel Du | Improvements to respiratory masks |
| FR801176A (en) * | 1935-04-26 | 1936-07-29 | Individual protection device against combat gases | |
| CH196825A (en) * | 1937-09-06 | 1938-03-31 | Eduard Dr Med Imobersteg | Gas mask. |
| FR855656A (en) * | 1939-01-27 | 1940-05-17 | Balaclava mask | |
| FR889783A (en) * | 1943-01-11 | 1944-01-19 | Auergesellschaft Ag | Mask or hood used to connect breathing apparatus |
| US2462005A (en) * | 1947-09-27 | 1949-02-15 | American Optical Corp | Face shield for use with respirators |
| US2529106A (en) * | 1947-11-19 | 1950-11-07 | American Optical Corp | Combined hood and respirator |
| US2583304A (en) * | 1950-06-06 | 1952-01-22 | Willson Products Inc | Dust hood |
| FR1083879A (en) * | 1952-09-24 | 1955-01-13 | Veedip Ltd | Improvements to respiratory masks |
| GB906251A (en) * | 1959-09-09 | 1962-09-19 | Secr Aviation | Improvements in or relating to mask lip seals |
| DE1199620B (en) * | 1963-01-18 | 1965-08-26 | Draegerwerk Ag | Gas protection hood |
| DE1936347U (en) * | 1965-12-17 | 1966-04-07 | Auergesellschaft Gmbh | CLOTHING TO PROTECT AGAINST AIR POLLUTION, CONSISTS OF AT LEAST A HOOD. |
| US3792702A (en) * | 1972-04-10 | 1974-02-19 | Ulmer & Co Soc | Harness for rapidly placing in position a device such as a respirator mask |
| DE2639545C3 (en) * | 1976-09-02 | 1979-04-05 | Draegerwerk Ag, 2400 Luebeck | Escape filter device with protective hood |
-
1979
- 1979-12-01 DE DE2948423A patent/DE2948423C2/en not_active Expired
-
1980
- 1980-09-22 EP EP80105687A patent/EP0029885B1/en not_active Expired
- 1980-09-22 AT AT80105687T patent/ATE6989T1/en active
- 1980-11-03 NO NO803291A patent/NO148909C/en unknown
- 1980-11-18 DK DK490780A patent/DK147592C/en active
- 1980-12-01 JP JP55168129A patent/JPS6054074B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6054074B2 (en) | 1985-11-28 |
| JPS5695066A (en) | 1981-08-01 |
| NO148909C (en) | 1984-01-11 |
| DK147592B (en) | 1984-10-15 |
| DK147592C (en) | 1985-04-22 |
| EP0029885A1 (en) | 1981-06-10 |
| NO803291L (en) | 1981-06-02 |
| DE2948423C2 (en) | 1982-12-09 |
| DK490780A (en) | 1981-06-02 |
| NO148909B (en) | 1983-10-03 |
| ATE6989T1 (en) | 1984-04-15 |
| DE2948423A1 (en) | 1981-06-04 |
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