CA1285452C - Gas mask - Google Patents
Gas maskInfo
- Publication number
- CA1285452C CA1285452C CA000531789A CA531789A CA1285452C CA 1285452 C CA1285452 C CA 1285452C CA 000531789 A CA000531789 A CA 000531789A CA 531789 A CA531789 A CA 531789A CA 1285452 C CA1285452 C CA 1285452C
- Authority
- CA
- Canada
- Prior art keywords
- gas mask
- mask according
- main frame
- inlet
- outlet
- 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 - Fee Related
Links
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 29
- 238000010168 coupling process Methods 0.000 claims description 29
- 238000005859 coupling reaction Methods 0.000 claims description 29
- 238000013022 venting Methods 0.000 claims description 5
- 230000005068 transpiration Effects 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000037406 food intake Effects 0.000 claims 1
- 235000012631 food intake Nutrition 0.000 claims 1
- 239000011521 glass Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 101150094949 APRT gene Proteins 0.000 description 1
- 101150039167 Bex3 gene Proteins 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 235000021056 liquid food Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Glass Compositions (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
Abstract
SUMMARY
Gas mask mainly composed of an inlet and outlet part (1) with possi-bly a speaking membrane (9), fastening devices (2) for securing the inlet and outlet part (1) before the mouth and nose orifices and a filter connection part (3), which is rotatable towards the inlet and outlet part.
Figure 5.
Gas mask mainly composed of an inlet and outlet part (1) with possi-bly a speaking membrane (9), fastening devices (2) for securing the inlet and outlet part (1) before the mouth and nose orifices and a filter connection part (3), which is rotatable towards the inlet and outlet part.
Figure 5.
Description
~2~35452 Gas mask _ _ _ _ _ _ _ _ The present invention concerns a gas mask.
As already known the gas masks are mainly composed of an inlet and outlet and a speaking memorane which are separately disposed in fas-tening devices hereby these fastening devices can secure the inlet and outlet parts of aforesaid inlet and outlet before the mouth and nose orifices, and of a filter connection element which makes possi ble to ~ecure a filter of the inlet part. The fastening devices may be composed of a face mask that is foreseen of eye glasses or of a panoramic sight glass and possible other accessories.
Moreover it is also known that the inlet and outlet parts of such gas masks have each at least one check valve. Several other fittings are also foreseen in most of the cases.
Quite obviously these mount devices have the disadvantage that the maintenance is made difficult by the large number of separate parts.
Another disadvantage is related to the fact that, on the one hand, the assembly during the manufacturing and, on the other hand, the control of the right functioning of the gas mask require a relatively long time.
1~3545~
1 It is also known that the existing filters are relatively heavy and bulky. This can result to the limitation of the head movements, to an additional reduction of the sight field, which is already quite limi-ted in the case of masks, to the quickly increasing fatigue of speci-fic neck ~uscles caused by the applied couple and to the difficult or even impossible use of instruments, tools or devices for the mask user.
The present invention is thus concerning an alternative solution for a gas mask which makes possible to systematically eliminate the aforesaid and still other disadvantages of the known gas masks. To this end the invention foresees a gas mask characterized by the fact that it is mainly composed of an inlet and an outlet part, of faste-ning devices in order to secure the inlet and outlet parts before the mouth and nose orifices and of a filter connection part whereby the inlet and the outlet parts are particularly and mainly composed of one single piece. Further on, the gas mask in accordance with the invention is characterized by the fact that the filter connection part can be rotated towards the inlet and outlet part. The use of a monolithic inlet and outlet part or, with other words, of a common inlet and outlet part has the advantage that the ga6 masks are easy to manufacture and that their right functioning can be easily checked. The use of a rotatable filter connection piece has the advantage that the relatively heavy filter can be easily displaced from an inconvenient position by bringing it into another position.
In a first preferred embodiment this gas mask comprises a monolithic inlet and outlet part and a filter connection part which can be rotat-ed in all directions whereby the filter connection part is connected to the inlet and outlet part by means of a ball joint.
According to a second preferred embodiment, the rotatable filter con-nection part i~ able to rotate in one plane. The connection bet~een the inlet and outlet part, on the one hand, and the filter connection part on the other hand, is achieved in this case by means of a pivo-table elbow-shaped coupling part. One end of this coupling part is al-128S4~
ways turned to the mouth of the gas mas~ user while thefilter connection part is mounted on the other end.
According to these two preferred embodiments the inlet and outlet part has also still a lot of specific advantages which will be more clearly described hereafter.
Broadly stated the invention is directed to a gas mask comprising:
a) a main frame having inlet and outlet ports, b) fastening devices securing the main frame in front of the mouth and nose orifices, and c) a filterconnection part mounted on the main frame, characterized in that the filterconnection part is pivotably mounted, via a coupling device, at least around an axis substantially perpendicular with respect to the front side of the mask, so that a filter connected to and carried by said connection part is capable of being swung from a central position to the left or right side of the mask.
In a particular embodiment, the invention is directed a g as m a sk comprising a facepiece with a seat, a monolithic member having wall means made of rigid material and a plurality of seats formed therein, means for mounting said monolithic member in said seat of said facepiece, inlet opening means, outlet valve means, and speech membrane means, each mounted in respective seats of said monolithic member, and an axis defined as being normal to the surface of and extending through the center of said inlet opening means and a coupling member pivotably mounted on said monolithic member for pivoting about said an axis, said coupling member having an inlet opening and an outlet opening, said outlet opening communicating connected with said inlet opening means and said inlet opening of said coupling member traveling along an arc during pivoting of said coupling member about said axis.
i ~0 ~854~;X
- 3a -For the sake of better understanding the characteristics of the invention two embodiments will be described hereafter as examples without any limitative character and with reference to the figures in appendix which are illustrating:
Figure 1 is a first embodiment of the gas mask according to the invention.
Figure 2 is a cross section through the inlet and outlet part and the filter connection part of the gas mask of figure 1.
Figure 3 is a view following the arrow F3 of figure 2.
Figure 4 is a view following the arrow F4 of figure 2.
Figure 5 is a second embodiment of the gas mask according to the invention.
Figure 6 is a cross-section following the lines VI-VI of figure 5.
As illustrated on figure 1 the gas mask is mainly composed of an inlet and outlet part 1, of fastening devices 2, in order to secure the inlet and outlet part 1 before the mouth and nose orifices and a filter connection part 3. The fastening devices 2 are already known and may be composed for instance of a face mask which is e~uipped with eye glasses 4 or possibly with a panoramic sight glass 4A. In the filter connection aprt 3, different kinds of filters 5 may be foreseen and are selected in accordance with the application involved.
~8545~
.!, 1 The Epecific character of the invention consi~ts in the fact that the inlet and outlet part 1, as illustrated on figures 2 to 4 is made of one single piece. This monolithic element is mainly composed of seve-ral inlet channels 6 and of an outlet orifice 5 uhich can be shut-off by means of a venting valve 8. The inlet and outlet part 1 can be al-so `foreseen, for instance, of a speaking membrane 9. This inlet andoutlet part 1 may, however, be also ~quipped with other accessories like a device for absorbing liquid food, a second speaking membrane for a telecommunication connection, a transpiration drainage system and so on.
Another specific characteristic of the invention consists in the fact that the filter connection part 3 is rotatable towards the inlet and outlet part l whereby the filter connection part 3, with the filter 5 fa~stened on it, is designed in such a uay that the latter one can keep its last position. To this end coupling devices 10 are mounted between the filter connection part 3 and the inlet and outlet part 1, as illustrated on figures 1 to 4, whereby these devices are made, for instance, of a flexible air supply line 11 and of a ball joint 12.
The flexible air supply pipe is nade preferably of a bellow.
The first part 13 of the ball joint 12 is a part of the inlet and outlet part 1. The second part 14 which is, for instance, the ball is fastened on the end 15 of rod 16 whereby this rod 16 is supporting the filter connection part 3 on its opposite end 17.
~uite obviously, several clamping straps 18 to 20 must be also fore-seen in order to secure, on the one hand, the flexible air supply pipe 11 and, on the other hand, the face mask on the inlet and outlet part 1 and the filter connection part 3. Moreover a sealing right 21 must also be mounted into the filter connection part 3.
The functioning of the gas mask according to figures 1 to 4 can be easily understood by èxa~ining this latter figure. If the ball joint 12 is made tightly enough, ue get the advantage that the filter con-nection part 3 as well as the filter 5 may be located in uhicheverposition in order that the annoyance for the gas mask user becomes very limited.
354~;2 l According to an alternative colution which is not illustrated on the figures, the coupling devices 10 may also be made of a large ball ioint having a central aperture. To this end this ball joint uay have a hollow shape. The ball of the ball joint may be, for instance, the continuation of the lowest end 22 of the inlet and outlet part 1 while the casing of the ball ioint is ~onolithic with the filter connection part 3.
Quite obviously the coupling devices 10 may also be made of a cross-coupling.
According to still another embodiment the coupling devices 10 are com-posed of the flexible air supply pipe 11 only. This flexible pipe is, indeed, strong enough in order that it keeps its last position in spite of the weight of the filter 5.
The figures 5 and 6 are illustrating still another preferred embodi-ment of the invention with a very compact inlet and outlet part 1.
The inlet and outlet part 1 is mainly composed in this case of a casing 33.
The front side of the casing 23 is made of a double grid 24 whereby both grid parts 25 and 26 are designed in such a way that their res-pective grid apertures 27 and 28 are not overlapping eachother. The double grid 24 has the advantage that jets, for instance water iets, cannot penetrate into the inlet and outlet part and damage the 6peaking membrane 9.
The rear side of the casing 23 is made of the speaking membrane 9 and of a grid 29 located on the side of the user's face in order to pro-tect the membrane 9. As the speaking membrane 9 is located directlybefore the mouth, the acoustic vibrations can be carried to the out-side without difficulty.
~8S45~
The casing 23 is equipped with double-wall sides 30 which are made of respectively one inside wall 31 and one outside wall 32. The intermediate space 33 is in connection with the inside of the gas mask. On both sides of the casing 23 in the inside wall 31 an outlet aperture 7 is mounted and sealed by means of a venting valve 8. The exhalated air can be evacuated this way through the venting valve, the inside of the casing 23 and the double grid 24. The use of two outlet apertures 7 has the advantage that the resistance opposed to respiration is reduced.
The rotatable filter connection part 3 of figure 5 can be turned by 180 in one plane. To this end the coupling devices 10 are made of an elbow-shaped coupling part 34 rotatable around an axis A-A as well as an adequate seat 35.
Preferably the seat 35 is designed in such a way that a tight fit is achieved for the coupling part 34. One end 36 of this coupling part 34 is oriented to the face of the mask users while the second end 37 is turned downwards and is foreseen of the filter connection part 3.
As also illustrated on figure 5 the seat 38 is preferably mounted under the casing 23 in order to achieve a compact system.
Near the end 36 of the coupling part 34 an inlet valve 38 is mounted.
On the bottom face of the inlet and outlet part devices 39 are foreseen in order to permit the insertion of an auxiliary part 40 for food supply and evacuation of transpiration moisture. The means 39 are, for instance, a support plate.
,~.,.
1~8S452 - 6a -The casing 23, the seat 35 and the means 39 are preferably made of one single pressure cast part. This has the advantage that a strong assembly is achieved. Moreover one single opening must be foreseen in the mask because all fittings are located in the same monolithic element.
/
.', J~ O
. . .
1~54S2 1 The invention is also concerning gas masks which are foreseen, on the one hand of a rotatable connection part 3 but which don't have, on the other hand, any monolithic inlet and outlet part, as it is the case with gas masks which include a combination of both characteristics as illustrated by the figures.
s The present invention is by no way limited to the embodiments des-cribed by way of examples and illustrated by the figures in appendix but such a gas mask as well as its components can be made with any shape and sizes without departing from the scope of the invention.
.
As already known the gas masks are mainly composed of an inlet and outlet and a speaking memorane which are separately disposed in fas-tening devices hereby these fastening devices can secure the inlet and outlet parts of aforesaid inlet and outlet before the mouth and nose orifices, and of a filter connection element which makes possi ble to ~ecure a filter of the inlet part. The fastening devices may be composed of a face mask that is foreseen of eye glasses or of a panoramic sight glass and possible other accessories.
Moreover it is also known that the inlet and outlet parts of such gas masks have each at least one check valve. Several other fittings are also foreseen in most of the cases.
Quite obviously these mount devices have the disadvantage that the maintenance is made difficult by the large number of separate parts.
Another disadvantage is related to the fact that, on the one hand, the assembly during the manufacturing and, on the other hand, the control of the right functioning of the gas mask require a relatively long time.
1~3545~
1 It is also known that the existing filters are relatively heavy and bulky. This can result to the limitation of the head movements, to an additional reduction of the sight field, which is already quite limi-ted in the case of masks, to the quickly increasing fatigue of speci-fic neck ~uscles caused by the applied couple and to the difficult or even impossible use of instruments, tools or devices for the mask user.
The present invention is thus concerning an alternative solution for a gas mask which makes possible to systematically eliminate the aforesaid and still other disadvantages of the known gas masks. To this end the invention foresees a gas mask characterized by the fact that it is mainly composed of an inlet and an outlet part, of faste-ning devices in order to secure the inlet and outlet parts before the mouth and nose orifices and of a filter connection part whereby the inlet and the outlet parts are particularly and mainly composed of one single piece. Further on, the gas mask in accordance with the invention is characterized by the fact that the filter connection part can be rotated towards the inlet and outlet part. The use of a monolithic inlet and outlet part or, with other words, of a common inlet and outlet part has the advantage that the ga6 masks are easy to manufacture and that their right functioning can be easily checked. The use of a rotatable filter connection piece has the advantage that the relatively heavy filter can be easily displaced from an inconvenient position by bringing it into another position.
In a first preferred embodiment this gas mask comprises a monolithic inlet and outlet part and a filter connection part which can be rotat-ed in all directions whereby the filter connection part is connected to the inlet and outlet part by means of a ball joint.
According to a second preferred embodiment, the rotatable filter con-nection part i~ able to rotate in one plane. The connection bet~een the inlet and outlet part, on the one hand, and the filter connection part on the other hand, is achieved in this case by means of a pivo-table elbow-shaped coupling part. One end of this coupling part is al-128S4~
ways turned to the mouth of the gas mas~ user while thefilter connection part is mounted on the other end.
According to these two preferred embodiments the inlet and outlet part has also still a lot of specific advantages which will be more clearly described hereafter.
Broadly stated the invention is directed to a gas mask comprising:
a) a main frame having inlet and outlet ports, b) fastening devices securing the main frame in front of the mouth and nose orifices, and c) a filterconnection part mounted on the main frame, characterized in that the filterconnection part is pivotably mounted, via a coupling device, at least around an axis substantially perpendicular with respect to the front side of the mask, so that a filter connected to and carried by said connection part is capable of being swung from a central position to the left or right side of the mask.
In a particular embodiment, the invention is directed a g as m a sk comprising a facepiece with a seat, a monolithic member having wall means made of rigid material and a plurality of seats formed therein, means for mounting said monolithic member in said seat of said facepiece, inlet opening means, outlet valve means, and speech membrane means, each mounted in respective seats of said monolithic member, and an axis defined as being normal to the surface of and extending through the center of said inlet opening means and a coupling member pivotably mounted on said monolithic member for pivoting about said an axis, said coupling member having an inlet opening and an outlet opening, said outlet opening communicating connected with said inlet opening means and said inlet opening of said coupling member traveling along an arc during pivoting of said coupling member about said axis.
i ~0 ~854~;X
- 3a -For the sake of better understanding the characteristics of the invention two embodiments will be described hereafter as examples without any limitative character and with reference to the figures in appendix which are illustrating:
Figure 1 is a first embodiment of the gas mask according to the invention.
Figure 2 is a cross section through the inlet and outlet part and the filter connection part of the gas mask of figure 1.
Figure 3 is a view following the arrow F3 of figure 2.
Figure 4 is a view following the arrow F4 of figure 2.
Figure 5 is a second embodiment of the gas mask according to the invention.
Figure 6 is a cross-section following the lines VI-VI of figure 5.
As illustrated on figure 1 the gas mask is mainly composed of an inlet and outlet part 1, of fastening devices 2, in order to secure the inlet and outlet part 1 before the mouth and nose orifices and a filter connection part 3. The fastening devices 2 are already known and may be composed for instance of a face mask which is e~uipped with eye glasses 4 or possibly with a panoramic sight glass 4A. In the filter connection aprt 3, different kinds of filters 5 may be foreseen and are selected in accordance with the application involved.
~8545~
.!, 1 The Epecific character of the invention consi~ts in the fact that the inlet and outlet part 1, as illustrated on figures 2 to 4 is made of one single piece. This monolithic element is mainly composed of seve-ral inlet channels 6 and of an outlet orifice 5 uhich can be shut-off by means of a venting valve 8. The inlet and outlet part 1 can be al-so `foreseen, for instance, of a speaking membrane 9. This inlet andoutlet part 1 may, however, be also ~quipped with other accessories like a device for absorbing liquid food, a second speaking membrane for a telecommunication connection, a transpiration drainage system and so on.
Another specific characteristic of the invention consists in the fact that the filter connection part 3 is rotatable towards the inlet and outlet part l whereby the filter connection part 3, with the filter 5 fa~stened on it, is designed in such a uay that the latter one can keep its last position. To this end coupling devices 10 are mounted between the filter connection part 3 and the inlet and outlet part 1, as illustrated on figures 1 to 4, whereby these devices are made, for instance, of a flexible air supply line 11 and of a ball joint 12.
The flexible air supply pipe is nade preferably of a bellow.
The first part 13 of the ball joint 12 is a part of the inlet and outlet part 1. The second part 14 which is, for instance, the ball is fastened on the end 15 of rod 16 whereby this rod 16 is supporting the filter connection part 3 on its opposite end 17.
~uite obviously, several clamping straps 18 to 20 must be also fore-seen in order to secure, on the one hand, the flexible air supply pipe 11 and, on the other hand, the face mask on the inlet and outlet part 1 and the filter connection part 3. Moreover a sealing right 21 must also be mounted into the filter connection part 3.
The functioning of the gas mask according to figures 1 to 4 can be easily understood by èxa~ining this latter figure. If the ball joint 12 is made tightly enough, ue get the advantage that the filter con-nection part 3 as well as the filter 5 may be located in uhicheverposition in order that the annoyance for the gas mask user becomes very limited.
354~;2 l According to an alternative colution which is not illustrated on the figures, the coupling devices 10 may also be made of a large ball ioint having a central aperture. To this end this ball joint uay have a hollow shape. The ball of the ball joint may be, for instance, the continuation of the lowest end 22 of the inlet and outlet part 1 while the casing of the ball ioint is ~onolithic with the filter connection part 3.
Quite obviously the coupling devices 10 may also be made of a cross-coupling.
According to still another embodiment the coupling devices 10 are com-posed of the flexible air supply pipe 11 only. This flexible pipe is, indeed, strong enough in order that it keeps its last position in spite of the weight of the filter 5.
The figures 5 and 6 are illustrating still another preferred embodi-ment of the invention with a very compact inlet and outlet part 1.
The inlet and outlet part 1 is mainly composed in this case of a casing 33.
The front side of the casing 23 is made of a double grid 24 whereby both grid parts 25 and 26 are designed in such a way that their res-pective grid apertures 27 and 28 are not overlapping eachother. The double grid 24 has the advantage that jets, for instance water iets, cannot penetrate into the inlet and outlet part and damage the 6peaking membrane 9.
The rear side of the casing 23 is made of the speaking membrane 9 and of a grid 29 located on the side of the user's face in order to pro-tect the membrane 9. As the speaking membrane 9 is located directlybefore the mouth, the acoustic vibrations can be carried to the out-side without difficulty.
~8S45~
The casing 23 is equipped with double-wall sides 30 which are made of respectively one inside wall 31 and one outside wall 32. The intermediate space 33 is in connection with the inside of the gas mask. On both sides of the casing 23 in the inside wall 31 an outlet aperture 7 is mounted and sealed by means of a venting valve 8. The exhalated air can be evacuated this way through the venting valve, the inside of the casing 23 and the double grid 24. The use of two outlet apertures 7 has the advantage that the resistance opposed to respiration is reduced.
The rotatable filter connection part 3 of figure 5 can be turned by 180 in one plane. To this end the coupling devices 10 are made of an elbow-shaped coupling part 34 rotatable around an axis A-A as well as an adequate seat 35.
Preferably the seat 35 is designed in such a way that a tight fit is achieved for the coupling part 34. One end 36 of this coupling part 34 is oriented to the face of the mask users while the second end 37 is turned downwards and is foreseen of the filter connection part 3.
As also illustrated on figure 5 the seat 38 is preferably mounted under the casing 23 in order to achieve a compact system.
Near the end 36 of the coupling part 34 an inlet valve 38 is mounted.
On the bottom face of the inlet and outlet part devices 39 are foreseen in order to permit the insertion of an auxiliary part 40 for food supply and evacuation of transpiration moisture. The means 39 are, for instance, a support plate.
,~.,.
1~8S452 - 6a -The casing 23, the seat 35 and the means 39 are preferably made of one single pressure cast part. This has the advantage that a strong assembly is achieved. Moreover one single opening must be foreseen in the mask because all fittings are located in the same monolithic element.
/
.', J~ O
. . .
1~54S2 1 The invention is also concerning gas masks which are foreseen, on the one hand of a rotatable connection part 3 but which don't have, on the other hand, any monolithic inlet and outlet part, as it is the case with gas masks which include a combination of both characteristics as illustrated by the figures.
s The present invention is by no way limited to the embodiments des-cribed by way of examples and illustrated by the figures in appendix but such a gas mask as well as its components can be made with any shape and sizes without departing from the scope of the invention.
.
Claims (22)
1. A gas mask comprising:
a) a main frame having inlet and outlet ports, b) fastening devices securing the main frame in front of the mouth and nose orifices, and c) a filter connection part mounted on the main frame, characterized in that the filter connection part is pivotably mounted, via a coupling device, at least around an axis substantially perpendicular with respect to the front side of the mask, so that a filter connected to and carried by said connection part is capable of being swung from a central position to the left or right side of the mask.
a) a main frame having inlet and outlet ports, b) fastening devices securing the main frame in front of the mouth and nose orifices, and c) a filter connection part mounted on the main frame, characterized in that the filter connection part is pivotably mounted, via a coupling device, at least around an axis substantially perpendicular with respect to the front side of the mask, so that a filter connected to and carried by said connection part is capable of being swung from a central position to the left or right side of the mask.
2. A gas mask according to claim 1, wherein said main frame is made up of one single piece.
3. A gas mask according to claim 1, wherein said pivotable filter connection part is constructed so that it is able to keep said filter in the position to which it was last brought.
4. A gas mask according to claim 1, wherein said filter connection part is mounted in front of said inlet port of said main frame and said coupling device comprises a flexible air supply pipe and a ball joint.
5. A gas mask according to claim 4, wherein one part of said ball joint is secured on said main frame while a second part of said ball joint is mounted on the end of a rod whereby said filter connection part is supported by means of the opposite end of said rod.
6. A gas mask according to claim 5, wherein said second part of said ball joint which is mounted on the rod is made of the ball of the joint.
7. A gas mask according to claim 4, wherein said air supply pipe comprises bellows.
8. A gas mask according to claim 1, wherein said main frame is composed of several inlet channels and of an outlet orifice provided with venting valve and speaking membrane.
9. A gas mask according to claim 1, wherein said coupling device comprises:
a) an elbow-shaped coupling part pivotable around said axis, and b) a seat for rotatably receiving one end of said coupling part while the other end of said coupling part terminates with the filter connection part.
a) an elbow-shaped coupling part pivotable around said axis, and b) a seat for rotatably receiving one end of said coupling part while the other end of said coupling part terminates with the filter connection part.
10. A gas mask according to claim 9, wherein said main frame comprises a casing which is exposed with its front side to the surrounding atmosphere of the gas mask, while its rear side is supporting a speaking membrane and venting valves are provided at least along both lateral sides.
11. A gas mask according to claim 10, wherein the front side of said casing is equipped with a double grid, both grid parts being such that their respective grid orifices are not overlapping each other.
12. A gas mask according to claim 10, characteri-zed by the fact that said casing is equipped on the inside of the gas mask with a grid in order to protect said speaking membrane.
13. A gas mask according to claim 9, characteri-zed by the fact that at least said one main frame and a seat for securing said said elbow shaped coupling part consist of a monolithic pressure cast part.
14. A gas mask according to one of the claim 1 to 13, wherein on the bottom side of the main frame means are provided to support at least an auxiliary part of members of the group consisting of food supply and evacuation of the transpiration moisture.
15. A gas mask according to one of the claim 1 to 13, wherein said fastening devices are a face mask.
16. A gas mask comprising a facepiece with a seat, a monolithic member having wall means made of rigid material and a plurality of seats formed therein, means for mounting said monolithic member in said seat of said facepiece, inlet opening means, outlet valve means, and speech membrane means each mounted in respective seats of said monolithic member, and an axis defined as being normal to the surface of and extending through the center of said inlet opening means and a coupling member pivotably mounted on said monolithic member for pivoting about said an axis, said coupling member having an inlet opening and an outlet opening, said outlet opening communicating connected with said inlet opening means and said inlet opening of said coupling member traveling along an arc during pivoting of said coupling member about said axis.
17. A gas mask as defined in claim 16, wherein said wall means, said outlet valve means and said speech membrane means define a cavity in said monolithic member, said cavity communicating with the environment external to said gas mask by way of aperture means, the interior of said gas mask communicating with said cavity by way of said outlet valve means.
18. A gas mask as defined in claim 17, wherein said outlet valve means comprises first and second outlet valves arranged on opposing sides of said cavity, each of said outlet valves allowing gas to vent from said interior of said gas mask to said cavity and blocking the flow of gas from said cavity to said interior of said gas mask.
19. A gas mask as defined in claim 17, wherein said aperture means comprise a first plurality of apertures formed in a first grid and a second plurality of apertures formed in a second grid, said first and second grids being rigidly coupled to each other and mounted in one of said seats of said monolithic member, and said first plurality of apertures not overlapping with said second plurality of apertures, said apertures means and said speech membrane means being arranged on opposing sides of said cavity.
20. A gas mask as defined in claim 19, further comprising a third grid having a third plurality of apertures, said third grid being mounted in another seat of said monolithic member and being arranged on the interior side of said speech membrane means.
21. A gas mask as defined in claim 16, further comprising filter means coupled to said coupling member, said inlet opening of said coupling member communicating with said filter means.
22. A gas mask as defined in claim 16, further comprising means for food intake coupled to one of said seats in said monolithic member.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2/60937A BE904392A (en) | 1986-03-12 | 1986-03-12 | GAS MASK |
| BEPV2/60937 | 1986-03-12 | ||
| BE2/61045A BE905392R (en) | 1986-09-08 | 1986-09-08 | GAS MASK. |
| BEPV2/61045 | 1986-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1285452C true CA1285452C (en) | 1991-07-02 |
Family
ID=25661837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000531789A Expired - Fee Related CA1285452C (en) | 1986-03-12 | 1987-03-11 | Gas mask |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0238129B1 (en) |
| AT (1) | ATE54571T1 (en) |
| CA (1) | CA1285452C (en) |
| ES (1) | ES2000236B3 (en) |
| GR (2) | GR880300003T1 (en) |
| IL (1) | IL81847A0 (en) |
| NO (1) | NO166839C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7210477B2 (en) | 2002-05-29 | 2007-05-01 | Brookdale International Systems, Inc. | Respirator hood assembly |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1216459B (en) * | 1988-02-26 | 1990-03-08 | Ind Pirelli S P A Milano Minis | PROTECTIVE MASK FOR OPERATIONAL INTERVENTIONS IN CONTAMINATED ENVIRONMENTS. |
| DE4220780C1 (en) * | 1992-06-25 | 1993-09-23 | Draegerwerk Ag, 23558 Luebeck, De | |
| DE19845572C2 (en) * | 1998-10-02 | 2002-06-06 | Draeger Safety Ag & Co Kgaa | Speech transmitter for a respirator |
| US20060180153A1 (en) * | 2005-01-27 | 2006-08-17 | Bernie Schaub | Assembly for mounting a device to a mask |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1366437A (en) * | 1918-10-18 | 1921-01-25 | Otto F Wagenhorst | Gas-mask |
| DE687036C (en) * | 1934-03-22 | 1940-01-20 | Bernh Draeger | Hose coupling, especially for breathing apparatus |
| FR811036A (en) * | 1935-12-24 | 1937-04-05 | Ericsson Telefon Sfe Fse | Respirator mask for aviation and other applications |
| US2133345A (en) * | 1937-03-31 | 1938-10-18 | Davis Emergency Equipment Comp | Respiratory appliance |
| GB837354A (en) * | 1958-01-20 | 1960-06-15 | Mine Safety Appliances Co | Mask for breathing apparatus |
| US3042033A (en) * | 1959-07-27 | 1962-07-03 | Globe Ind Inc | Connecting member |
| US3348537A (en) * | 1965-03-01 | 1967-10-24 | Mine Safety Appliances Co | Combination breathing valve and speaking diaphragm unit |
-
1987
- 1987-03-06 ES ES87200418T patent/ES2000236B3/en not_active Expired - Lifetime
- 1987-03-06 EP EP87200418A patent/EP0238129B1/en not_active Expired - Lifetime
- 1987-03-06 AT AT87200418T patent/ATE54571T1/en not_active IP Right Cessation
- 1987-03-10 IL IL81847A patent/IL81847A0/en not_active IP Right Cessation
- 1987-03-11 NO NO871003A patent/NO166839C/en unknown
- 1987-03-11 CA CA000531789A patent/CA1285452C/en not_active Expired - Fee Related
-
1988
- 1988-05-20 GR GR88300003T patent/GR880300003T1/en unknown
-
1990
- 1990-07-19 GR GR90400299T patent/GR3000653T3/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7210477B2 (en) | 2002-05-29 | 2007-05-01 | Brookdale International Systems, Inc. | Respirator hood assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| IL81847A0 (en) | 1987-10-20 |
| ATE54571T1 (en) | 1990-08-15 |
| GR880300003T1 (en) | 1988-10-18 |
| GR3000653T3 (en) | 1991-09-27 |
| ES2000236A4 (en) | 1988-02-01 |
| NO166839C (en) | 1991-09-11 |
| NO871003D0 (en) | 1987-03-11 |
| NO871003L (en) | 1987-09-14 |
| NO166839B (en) | 1991-06-03 |
| ES2000236B3 (en) | 1990-10-16 |
| EP0238129B1 (en) | 1990-07-18 |
| EP0238129A1 (en) | 1987-09-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |