EP0674918A1 - Chemical oxygen device - Google Patents
Chemical oxygen device Download PDFInfo
- Publication number
- EP0674918A1 EP0674918A1 EP95104634A EP95104634A EP0674918A1 EP 0674918 A1 EP0674918 A1 EP 0674918A1 EP 95104634 A EP95104634 A EP 95104634A EP 95104634 A EP95104634 A EP 95104634A EP 0674918 A1 EP0674918 A1 EP 0674918A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chemical
- breathing
- bag
- chemical oxygen
- oxygen device
- 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
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/08—Respiratory apparatus containing chemicals producing oxygen
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/088—Devices for indicating filter saturation
Definitions
- the invention relates to a chemical oxygen device according to the preamble of claim 1.
- Chemical cartridges for breathing apparatus are known in the prior art. Such a chemical cartridge is described in DE 26 35 376 C2.
- the chemical bounded by an upper and lower space is flowed through by the exhaled air through an end and outer surface of the chemical volume and reaches a breathing bag as breathable air via a central tube provided with holes on the circumference.
- the disadvantage here is that, in addition to the insufficient flow through the chemical and the associated limitation of the duration of use of such devices due to incomplete use of the chemical during use, there is a considerable strain on the wearer of this respirator due to the need to overcome high breathing resistance.
- the particle filter is arranged directly on the inhalation valve. As a result, the filter resistance must be overcome when the user inhales.
- the state of the art also includes chemical oxygen devices, which are offered with a time-controlled consumption display, whereby for safety reasons an incomplete use of the chemical must be calculated during the time of use, since a time control can only ever be independent of the conditions of use.
- the invention is therefore based on the object of improving the conditions of use of chemical oxygen devices by reducing the breathing resistance and by means of a consumption display which shows the still available supply of breathing gas at all times.
- the invention is explained in more detail using an exemplary embodiment shown in the drawing.
- the figure shows a schematic representation of an embodiment of the chemical oxygen device according to the invention.
- the chemical oxygen device is operated in circulatory breathing.
- It consists of a portable housing (1) in which two chemical cartridges (2), the chemical as a CO2 binding and O2 releasing substance, e.g. Potassium hyperoxide contained, are arranged side by side.
- two chemical cartridges (2) the chemical as a CO2 binding and O2 releasing substance, e.g. Potassium hyperoxide contained, are arranged side by side.
- the chemical cartridges (2) are connected on the exhalation side to a breathing bag (3) for the exhaled air, at the inlet of which there is an exhalation valve (5) in which a blower (8) and on the wall of which a pressure relief valve (11) is arranged.
- the chemical cartridges (2) are connected to a breathing bag (7) for the inhaled air, a particle filter (6) at the inlet and an inhalation valve (4) at the outlet.
- an energy source (10) in the housing (1) e.g. a battery or an accumulator arranged.
- ignition devices (12) are arranged on the bottom thereof. Blower (8), energy source (10) and the ignition devices are electrically connected to an evaluation unit (9).
- the operator of the chemical oxygen device according to the invention When exhaling, the operator of the chemical oxygen device according to the invention only needs to overcome the breathing resistance of the exhalation valve (5).
- the blower (8) which is used in chemical oxygen devices for the first time, overcomes the breathing resistance of the chemical cartridges (2) and the particle filter (6).
- the inventive arrangement of the particle filter (6) at the entrance of the inhalation bag (7) achieved that the operator only has to overcome the breathing resistance of the inhalation valve during inhalation and not, as is customary in solutions of the prior art, by connecting the inhalation valve and filter additionally the breathing resistance of the particle filter (6).
- the conditions of use of the chemical oxygen device according to the invention are further improved by the evaluation unit (9), which displays the available supply of breathing gas at all times.
- the display can e.g. by evaluating the device parameters of the blower (8) and the resulting consumption of chemical in the form of the remaining stock.
- the evaluation unit (9) also serves to display the state of charge of the energy source (10) and to trigger the initial ignitions via the ignition devices (12).
- the chemical cartridges (2) are designed as double-jacketed containers, which are equipped with a cooling medium, in order to cool the warm inhalation gas produced by an exothermic reaction.
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Emergency Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
Die Erfindung betrifft ein Chemikalsauerstoffgerät mit einer oder mehreren in einem Gehäuse (1) angeordneten CO2 bindenden und O2 abgebenden Chemikalparonen (2), einem Atembeutel (3) für die Ausatemluft, der in einem Atembeutel (7) für die Einatemluft angeordnet ist, Einatemventil (4), Ausatemventil (5) und ein Partikelfilter (6). Die Aufgabe der Erfindung besteht darin, die Einsatzbedingungen von Chemikalsauerstoffgeräten durch eine Reduzierung der Atemwiderstände und durch eine Verbrauchsanzeige, die jederzeit den noch verfügbaren Vorrat an Atemgas anzeigt, zu verbessern. Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß zur Reduzierung der Atemwiderstände zwischen dem Ausatembeutel (3) und den Chemikalpatronen (2) ein Gebläse (8) und das Partikelfilter (6) am Eingang des Einatembeutels (7) angeordnet sind. Das Gebläse (8) ist mit einer Auswerteeinheit (9) verbunden, wodurch der Träger des Chemikalsauerstoffgerätes jederzeit den noch vorhandenen Vorrat an Atemgas überprüfen kann. <IMAGE>The invention relates to a chemical oxygen device with one or more CO2-binding and O2-emitting chemical cartridges (2) arranged in a housing (1), a breathing bag (3) for the exhaled air, which is arranged in a breathing bag (7) for the inhaled air, inhalation valve ( 4), exhalation valve (5) and a particle filter (6). The object of the invention is to improve the conditions of use of chemical oxygen devices by reducing the breathing resistance and by a consumption display that shows the still available supply of breathing gas at all times. According to the invention the object is achieved in that a blower (8) and the particle filter (6) are arranged at the entrance of the inhalation bag (7) between the exhalation bag (3) and the chemical cartridges (2) to reduce the breathing resistance. The blower (8) is connected to an evaluation unit (9), so that the wearer of the chemical oxygen device can check the remaining supply of breathing gas at any time. <IMAGE>
Description
Die Erfindung betrifft ein Chemikalsauerstoffgerät nach dem Oberbegriff des Anspruchs 1.The invention relates to a chemical oxygen device according to the preamble of
Nach dem Stand der Technik sind Chemikalpatronen für Atemschutzgeräte bekannt. Eine derartige Chemikalpatrone wird in der DE 26 35 376 C2 beschrieben. Bei dieser Ausführung wird das durch einen oberen und unteren Raum begrenzte Chemikal von der Ausatemluft über eine Stirn und Mantelfläche des Chemikalvolumens durchströmt und gelangt als atembare Luft über ein am Umfang mit Bohrungen versehenes Zentralrohr in einen Atembeutel.Chemical cartridges for breathing apparatus are known in the prior art. Such a chemical cartridge is described in DE 26 35 376 C2. In this embodiment, the chemical bounded by an upper and lower space is flowed through by the exhaled air through an end and outer surface of the chemical volume and reaches a breathing bag as breathable air via a central tube provided with holes on the circumference.
Dabei ist von Nachteil, daß neben der unzureichenden Durchströmung des Chemikals und damit verbundene Begrenzung der Einsatzdauer derartiger Geräte durch eine unvollständige Nutzung des Chemikals in der Einsatzzeit eine erhebliche Belastung der Träger dieses Atemschutzgerätes durch die Notwendigkeit der Überwindung hoher Atemwiderstände besteht.The disadvantage here is that, in addition to the insufficient flow through the chemical and the associated limitation of the duration of use of such devices due to incomplete use of the chemical during use, there is a considerable strain on the wearer of this respirator due to the need to overcome high breathing resistance.
Eine verbesserte Chemikalpatrone für Atemschutzgeräte, die den Nachteil der unzureichenden Durchströmung überwindet und damit zu einer besseren Ausnutzung des Chemikals führt, ist aus der DE 41 26 685 bekannt. Gemäß dieser Lösung sind zwei Rohrstutzen in der Chemikalpatrone so angeordnet, daß auch Randbereiche des Chemikals mit größerer Sicherheit von der Ausatemluft durchströmt werden.An improved chemical cartridge for respiratory protective devices, which overcomes the disadvantage of insufficient flow and thus leads to better use of the chemical, is known from DE 41 26 685. According to this solution, two pipe sockets are arranged in the chemical cartridge so that even peripheral areas of the chemical are more reliably flowed through by the exhaled air.
Nachteil dieser Lösung ist, daß bei dieser verbesserten Lösung eine von den Einsatzbedingungen unabhängige Einsatzzeit mit einer Sicherheitsreserve vorgegeben werden muß und, daß durch den Anwender dieser Atemschutzgeräte ebenfalls hohe Atemwiderstände zu überwinden sind.Disadvantages of this solution are that, with this improved solution, a period of use that is independent of the operating conditions must be specified with a safety reserve and that the user of these respiratory protective devices also has to overcome high breathing resistance.
Bei handelsüblichen Chemikalsauerstoffgeräten ist das Partikelfilter unmittelbar am Einatemventil angeordnet. Das führt dazu, das beim Einatmen durch den Benutzer der Filterwiderstand überwunden werden muß.In the case of commercially available chemical oxygen devices, the particle filter is arranged directly on the inhalation valve. As a result, the filter resistance must be overcome when the user inhales.
Zum Stand der Technik gehören weiter Chemikalsauerstoffgeräte, die mit einer zeitgesteuerten Verbrauchsanzeige angeboten werden, wobei aus Sicherheitsgründen mit einer unvollständigen Nutzung des Chemikals in der Einsatzzeit kalkuliert werden muß, da eine Zeitsteuerung immer nur unabhängig von den Einsatzbedingungen sein kann.The state of the art also includes chemical oxygen devices, which are offered with a time-controlled consumption display, whereby for safety reasons an incomplete use of the chemical must be calculated during the time of use, since a time control can only ever be independent of the conditions of use.
Der Erfindung liegt daher die Aufgabe zu Grunde, die Einsatzbedingungen von Chemikalsauerstoffgeräten durch eine Reduzierung der Atemwiderstände und durch eine Verbrauchsanzeige, die jederzeit den noch verfügbaren Vorrat an Atemgas anzeigt, zu verbessern.The invention is therefore based on the object of improving the conditions of use of chemical oxygen devices by reducing the breathing resistance and by means of a consumption display which shows the still available supply of breathing gas at all times.
Die mit der Erfindung erzielten Vorteile bestehen darin; daß eine vorgegebene Menge Chemikal zur Erzeugung von Sauerstoff optimal und unabhängig von den Einsatzbedingungen ausgenutzt wird, wodurch eine längere Einsatzzeit für das Atemschutzgerät möglich ist.The advantages achieved with the invention are; that a predetermined amount of chemical for the generation of oxygen is used optimally and regardless of the conditions of use, which means that a longer period of use for the breathing apparatus is possible.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention result from the subclaims.
Die Erfindung wird anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Die Fig. zeigt eine schematische Darstellung eines Ausführungsbeispiels des erfindungsgemäßen Chemikalsauerstoffgerätes.The invention is explained in more detail using an exemplary embodiment shown in the drawing. The figure shows a schematic representation of an embodiment of the chemical oxygen device according to the invention.
Wie aus der Fig. erkennbar ist, wird das Chemikalsauerstoffgerät in Kreislaufatmung betrieben.As can be seen from the figure, the chemical oxygen device is operated in circulatory breathing.
Es besteht aus einem tragbaren Gehäuse (1) in dem zwei Chemikalpatronen (2), die als Chemikal eine CO₂ bindende und O₂ abgebende Substanz, z.B. Kaliumhyperoxid, enthalten, nebeneinander angeordnet sind.It consists of a portable housing (1) in which two chemical cartridges (2), the chemical as a CO₂ binding and O₂ releasing substance, e.g. Potassium hyperoxide contained, are arranged side by side.
Die Chemikalpatronen (2) sind ausatemseitig mit einem Atembeutel (3) für die Ausatemluft verbunden, an dessen Eingang ein Ausatemventil (5), in dem ein Gebläse (8) und an dessen Wandung ein Überdruckventil (11) angeordnet ist. Einatemseitig sind die Chemikalpatronen (2) mit einem Atembeutel (7) für die Einatemluft verbunden, an dessen Eingang ein Partikelfilter (6) und an dessen Ausgang ein Einatemventil (4) angeordnet ist. Zur Energieversorgung des Gebläses (8) ist im Gehäuse (1) eine Energiequelle (10), z.B. eine Batterie oder ein Akkumulator, angeordnet.The chemical cartridges (2) are connected on the exhalation side to a breathing bag (3) for the exhaled air, at the inlet of which there is an exhalation valve (5) in which a blower (8) and on the wall of which a pressure relief valve (11) is arranged. On the inhalation side, the chemical cartridges (2) are connected to a breathing bag (7) for the inhaled air, a particle filter (6) at the inlet and an inhalation valve (4) at the outlet. To supply the fan (8) with energy, there is an energy source (10) in the housing (1), e.g. a battery or an accumulator arranged.
Zur Zündung des Chemikals in den Chemikalpatronen (2) sind an deren Boden Zündvorrichtungen (12) angeordnet. Gebläse (8), Energiequelle (10) und die Zündvorrichtungen sind elektrisch mit einer Auswerteeinheit (9) verbunden.To ignite the chemical in the chemical cartridges (2), ignition devices (12) are arranged on the bottom thereof. Blower (8), energy source (10) and the ignition devices are electrically connected to an evaluation unit (9).
Die Durchströmung der einzelnen Bauteile des Chemikalsauerstoffgerätes wird durch Pfeile in der Zeichnung dargestellt.The flow through the individual components of the chemical oxygen device is shown by arrows in the drawing.
Bei der Ausatmung braucht der Betreiber des erfindungsgemäßen Chemikalsauerstoffgerätes lediglich den Atemwiderstand des Ausatemventils (5) überwinden. Die Überwindung der Atemwiderstände der Chemikalpatronen (2) und des Partikelfilters (6) übernimmt das Gebläse (8), das erstmals in Chemikalsauerstoffgeräten eingesetzt wird.When exhaling, the operator of the chemical oxygen device according to the invention only needs to overcome the breathing resistance of the exhalation valve (5). The blower (8), which is used in chemical oxygen devices for the first time, overcomes the breathing resistance of the chemical cartridges (2) and the particle filter (6).
Durch die erfindungsgemäße Anordnung des Partikelfilters (6) am Eingang des Einatembeutels (7) wurde erreicht, daß der Betreiber beim Einatmen lediglich den Atemwiderstand des Einatemventils überwinden muß und nicht, wie bei Lösungen des Standes der Technik üblich, durch eine Verbindung von Einatemventil und Filter zusätzlich den Atemwiderstand des Partikelfilters (6).The inventive arrangement of the particle filter (6) at the entrance of the inhalation bag (7) achieved that the operator only has to overcome the breathing resistance of the inhalation valve during inhalation and not, as is customary in solutions of the prior art, by connecting the inhalation valve and filter additionally the breathing resistance of the particle filter (6).
Die Einsatzbedingungen des erfindungsgemäßen Chemikalsauerstoffgerätes werden weiter durch die Auswerteeinheit (9) verbessert, die jederzeit den verfügbaren Vorrat an Atemgas anzeigt. Die Anzeige kann z.B. durch die Auswertung der Geräteparameter des Gebläses (8) und dem daraus sich ergebenden Verbrauch an Chemikal in Form des noch vorhandenen Vorrates erfolgen.The conditions of use of the chemical oxygen device according to the invention are further improved by the evaluation unit (9), which displays the available supply of breathing gas at all times. The display can e.g. by evaluating the device parameters of the blower (8) and the resulting consumption of chemical in the form of the remaining stock.
Die Auswerteeinheit (9) dient weiterhin der Anzeige des Ladezustandes der Energiequelle (10) und der Auslösung der Initialzündungen über die Zündvorrichtungen (12).The evaluation unit (9) also serves to display the state of charge of the energy source (10) and to trigger the initial ignitions via the ignition devices (12).
Die Chemikalpatronen (2) sind als Doppelmantelbehälter, die mit einem Kühlmedium ausgerüstet sind, ausgebildet, um das durch ein exotherme Reaktion entstehende warme Einatemgas zu kühlen.The chemical cartridges (2) are designed as double-jacketed containers, which are equipped with a cooling medium, in order to cool the warm inhalation gas produced by an exothermic reaction.
Claims (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4411560A DE4411560C1 (en) | 1994-04-02 | 1994-04-02 | Chemical oxygen@ supply equipment |
| DE4411560 | 1994-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0674918A1 true EP0674918A1 (en) | 1995-10-04 |
| EP0674918B1 EP0674918B1 (en) | 1998-10-07 |
Family
ID=6514557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95104634A Expired - Lifetime EP0674918B1 (en) | 1994-04-02 | 1995-03-29 | Chemical oxygen device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5613488A (en) |
| EP (1) | EP0674918B1 (en) |
| AU (1) | AU682251B2 (en) |
| DE (1) | DE4411560C1 (en) |
| ES (1) | ES2126172T3 (en) |
| ZA (1) | ZA952720B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6142151A (en) * | 1999-04-16 | 2000-11-07 | United Technologies Corporation | Spool valve for switching air flows between two beds |
| DE10304394B4 (en) * | 2003-02-04 | 2005-10-13 | Dräger Safety AG & Co. KGaA | Respirator with a breathing gas circuit |
| DE102005015275B3 (en) * | 2005-03-25 | 2006-09-28 | Msa Auer Gmbh | Method and apparatus for determining the residual capacity of respirable air for an oxygen-producing, circulatory respirator |
| GB2427365B (en) * | 2005-06-17 | 2011-03-30 | Alex Deas | Rebreather with gradual CO2 breakthrough |
| US20100163046A1 (en) * | 2006-03-28 | 2010-07-01 | Joseph Fisher | Method and apparatus for ventilation assistance |
| US9545530B2 (en) | 2012-07-11 | 2017-01-17 | B/E Aerospace, Inc. | Aircraft crew member protective breathing apparatus |
| US9498656B2 (en) | 2012-07-11 | 2016-11-22 | B/E Aerospace, Inc. | Aircraft crew member protective breathing apparatus |
| WO2015006468A1 (en) | 2013-07-10 | 2015-01-15 | B/E Aerospace, Inc. | Aircraft crew member protective breathing apparatus |
| CN104616434B (en) * | 2015-02-11 | 2017-04-26 | 徐波 | Registration system for inside fire attack firemen |
| CN117734910B (en) * | 2023-09-27 | 2024-05-24 | 中国人民解放军海军特色医学中心 | Reactant tank for circulating type scuba gear and use state monitoring method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB445457A (en) * | 1934-09-21 | 1936-04-09 | Pirelli | Improvements relating to filters and purifiers employed for conditioning air, for example for respiration, by freeing it from poisonous gases and other injurious or undesired constituents |
| GB1018751A (en) * | 1961-08-30 | 1966-02-02 | Universelle De Prod Chim Et D | Production of oxygen |
| US4440162A (en) * | 1981-06-23 | 1984-04-03 | Her Majesty The Queen In Right Of Canada | Soda lime half life indicator |
| DE3838531A1 (en) * | 1988-11-14 | 1990-05-17 | Wolfgang Gerigk | Device for the detection of infected and poisoned breathing air |
| FR2639835A1 (en) * | 1988-12-02 | 1990-06-08 | Draegerwerk Ag | RESPIRATORY APPARATUS WITH MULTIPLE REGENERATING CARTRIDGES AND RESPIRATORY BAG |
| FR2649897A1 (en) * | 1989-07-19 | 1991-01-25 | Sabre Safety Ltd | RESPIRATORY PROTECTION APPARATUS |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1474205A (en) * | 1921-10-11 | 1923-11-13 | Mine Safety Appliances Co | Gas mask |
| DE1901243A1 (en) * | 1969-01-08 | 1970-08-13 | Auergesellschaft Gmbh | Breathing apparatus with circulatory breathing |
| US3692026A (en) * | 1969-10-20 | 1972-09-19 | Mine Safety Appliances Co | Underwater breathing apparatus |
| US4019509A (en) * | 1975-08-28 | 1977-04-26 | Lockheed Missiles & Space Company, Inc. | Self-rescue breathing apparatus |
| FR2323403A1 (en) * | 1975-09-15 | 1977-04-08 | Spirotech Ind Commerc | CLOSED-CIRCUIT RESPIRATORY SYSTEM |
| JPS52142897A (en) * | 1976-05-24 | 1977-11-29 | Midori Anzen Kogyo | Respiring bag for emergency respirator |
| DE2635376C2 (en) * | 1976-08-06 | 1984-04-05 | Drägerwerk AG, 2400 Lübeck | Air purification cartridge for breathing apparatus |
| DE2641576A1 (en) * | 1976-09-13 | 1978-03-16 | Auergesellschaft Gmbh | RESPIRATORY DEVICE |
| US4186735A (en) * | 1977-04-21 | 1980-02-05 | Flood Michael G | Breathing apparatus |
| US4209491A (en) * | 1977-12-21 | 1980-06-24 | Midori Anzen Company, Ltd. | Control and monitoring system for oxygen generating device |
| DE2854166A1 (en) * | 1978-12-15 | 1980-06-19 | Draegerwerk Ag | RESPIRATORY DEVICE WITH A COOLING DEVICE |
| FR2471313A1 (en) * | 1979-12-14 | 1981-06-19 | Mecaniques Applique Lab | Divers breathing appts. with independent air supply - has variable reservoir with carbon di:oxide filter in line supplying mask |
| DE3109658C2 (en) * | 1981-03-13 | 1984-04-05 | Drägerwerk AG, 2400 Lübeck | Electrically controllable breathing apparatus based on the circulatory principle |
| DE3202638A1 (en) * | 1982-01-28 | 1983-08-18 | Drägerwerk AG, 2400 Lübeck | RESPIRATORY DEVICE WITH BREATHING AIR CIRCUIT |
| DE3515030A1 (en) * | 1985-04-25 | 1986-10-30 | Drägerwerk AG, 2400 Lübeck | RESPIRATORY DEVICE WITH BREATHING AIR CIRCUIT |
| US4879996A (en) * | 1987-01-13 | 1989-11-14 | Harwood Jr Van N | Closed circuit breathing apparatus |
| US4774942A (en) * | 1987-08-28 | 1988-10-04 | Litton Systems, Inc. | Balanced exhalation valve for use in a closed loop breathing system |
| DE3901581A1 (en) * | 1989-01-20 | 1990-08-02 | Draegerwerk Ag | RESPIRATORY DEVICE WITH OVERPRESSURE IN A CIRCUIT |
| DE4126685C2 (en) * | 1991-08-13 | 1994-01-13 | Auergesellschaft Gmbh | Chemical cartridge for breathing apparatus |
| DE4137331C2 (en) * | 1991-11-13 | 1994-09-01 | Auergesellschaft Gmbh | Chemical oxygen device |
| ZA927931B (en) * | 1992-08-24 | 1994-04-14 | Donald Munro Miller | Breathing apparatus |
-
1994
- 1994-04-02 DE DE4411560A patent/DE4411560C1/en not_active Expired - Fee Related
-
1995
- 1995-03-29 ES ES95104634T patent/ES2126172T3/en not_active Expired - Lifetime
- 1995-03-29 EP EP95104634A patent/EP0674918B1/en not_active Expired - Lifetime
- 1995-03-30 US US08/413,184 patent/US5613488A/en not_active Expired - Fee Related
- 1995-04-03 ZA ZA952720A patent/ZA952720B/en unknown
- 1995-04-03 AU AU16244/95A patent/AU682251B2/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB445457A (en) * | 1934-09-21 | 1936-04-09 | Pirelli | Improvements relating to filters and purifiers employed for conditioning air, for example for respiration, by freeing it from poisonous gases and other injurious or undesired constituents |
| GB1018751A (en) * | 1961-08-30 | 1966-02-02 | Universelle De Prod Chim Et D | Production of oxygen |
| US4440162A (en) * | 1981-06-23 | 1984-04-03 | Her Majesty The Queen In Right Of Canada | Soda lime half life indicator |
| DE3838531A1 (en) * | 1988-11-14 | 1990-05-17 | Wolfgang Gerigk | Device for the detection of infected and poisoned breathing air |
| FR2639835A1 (en) * | 1988-12-02 | 1990-06-08 | Draegerwerk Ag | RESPIRATORY APPARATUS WITH MULTIPLE REGENERATING CARTRIDGES AND RESPIRATORY BAG |
| FR2649897A1 (en) * | 1989-07-19 | 1991-01-25 | Sabre Safety Ltd | RESPIRATORY PROTECTION APPARATUS |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA952720B (en) | 1995-12-21 |
| DE4411560C1 (en) | 1995-08-03 |
| US5613488A (en) | 1997-03-25 |
| ES2126172T3 (en) | 1999-03-16 |
| EP0674918B1 (en) | 1998-10-07 |
| AU682251B2 (en) | 1997-09-25 |
| AU1624495A (en) | 1995-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3413037C2 (en) | Portable ventilator | |
| DE3742639C2 (en) | Closed circuit breathing apparatus | |
| EP0536546B1 (en) | Blower assisted breathing protection apparatus with attachable control member | |
| DE3531654C2 (en) | ||
| DE69211996T2 (en) | AUTONOMOUS NOTATEM PROTECTOR | |
| DE3874258T2 (en) | EXHALATION VALVE WITH ADJUSTMENT FOR BREATHING UNITS WITH CLOSED CIRCUIT. | |
| DE3412409A1 (en) | BREATHING MASK | |
| EP0674918A1 (en) | Chemical oxygen device | |
| DE3015759C2 (en) | Compressed gas breathing apparatus with positive pressure in the breathing air | |
| DE2856503A1 (en) | TRAINING BREATHING DEVICE | |
| DE3111795C3 (en) | Breathing bag with an air distributor inside | |
| DE19751597A1 (en) | Portable rebreather apparatus for emergency inhalation anesthesia in remote locations | |
| EP1861173A1 (en) | Method and arrangement for determination of the residual capacity of breathable air for an oxygen-generating breathing apparatus operated in circuit | |
| DE2633344C2 (en) | Oxygen breathing apparatus with an oxygen-releasing chemical cartridge | |
| DE60109911T2 (en) | REFILLABLE AIR CONTAINER, ESPECIALLY FOR DIVERS | |
| DE3840606C2 (en) | ||
| EP0182979A2 (en) | Breathing protection device with air regeneration | |
| DE69226784T2 (en) | RESPIRATORY DEVICE | |
| DE2458017A1 (en) | VALVE FOR BREATHING DEVICES | |
| DE3203135C2 (en) | Breathing apparatus with regeneration cartridge and pressurized oxygen tank | |
| DE3829115A1 (en) | Breathing equipment | |
| DE1195602C2 (en) | BREATHING APPARATUS WITH PENDULUM BREATHING | |
| EP0547296A1 (en) | Chemical oxygen device | |
| DE19729965A1 (en) | Breathing apparatus especially for diver air supply | |
| EP0182235B1 (en) | Breathing protection hood |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19950411 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE ES FR GB IT NL SE |
|
| 17Q | First examination report despatched |
Effective date: 19960604 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE ES FR GB IT NL SE |
|
| ET | Fr: translation filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19990212 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2126172 Country of ref document: ES Kind code of ref document: T3 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20000315 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20000331 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20010221 Year of fee payment: 7 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010331 |
|
| BERE | Be: lapsed |
Owner name: AUERGESELLSCHAFT G.M.B.H. Effective date: 20010331 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011001 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20011001 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020330 |
|
| EUG | Se: european patent has lapsed |
Ref document number: 95104634.1 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030115 Year of fee payment: 9 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040329 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20040329 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050329 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20080326 Year of fee payment: 14 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20090325 Year of fee payment: 15 |
|
| PGRI | Patent reinstated in contracting state [announced from national office to epo] |
Ref country code: IT Effective date: 20091201 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20090330 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20100331 Year of fee payment: 16 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090330 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100329 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20111130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110331 |