• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Respiratory protection hood comprising a sealed flexible envelope (2) intended to be threaded onto a user's head, the flexible envelope being provided with a transparent window (20) and comprising, in its lower part, an element (3, 4) rigid base of generally annular shape intended to be arranged around the neck of the user, the base element comprising a reservoir (3) of tubular oxygen oxygen pressure provided a orifice (7) output calibrated opening into the internal volume of the flexible casing (2), characterized in that the base element comprises at least two rigid parts (3, 4) connected by a hinge (5), the two parts (3, 4) being movable relatively between a first folded position preventing the passage of a head in the hood (1) through the element (3, 4) base and a second unfolded position of use allowing the passage of a head in the hood (1) through the element (3, 4) basic.
    公开号:FR3024370A1
    申请号:FR1457490
    申请日:2014-08-01
    公开日:2016-02-05
    发明作者:Rachid Makhlouche；Bouchard Xavier Roussin；Pierrick Cohard；Christian Rolland；Vincent Graziani
    申请人:Air Liquide SA；LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude；
    IPC主号:
    专利说明:

    [0001] The present invention relates to respiratory protective equipment. The invention relates more particularly to a respiratory protection hood, in particular for aircraft. The invention particularly relates to a hood comprising a sealed flexible envelope intended to be threaded onto the head of a user, the flexible envelope being provided with a transparent window and comprising, in its lower part, a rigid base element of general shape. annular ring intended to be arranged around the neck of the user, the base element comprising a tubular oxygen oxygen tank under pressure provided with a calibrated outlet opening opening into the internal volume of the flexible envelope. This type of device is conventionally used on board aircraft when the atmosphere of the cabin is flawed (depressurization, smoke, chemical agent, ...). This equipment must also allow the flight crew to fight the damage, rescue passengers and manage a possible evacuation of the aircraft. The technical specifications of these devices are defined according to classes of use (in-flight damage, protection against hypoxia at high altitude, emergency evacuation on the ground, etc.). Known respiratory protection equipment mainly uses two types of oxygen source: - a chemical bread (also called "chemical candle") generating oxygen by combustion (potassium superoxide - KO 2, sodium chlorate - NaClO 3,. ..), or - a compressed oxygen tank associated with a calibrated orifice. Technology using compressed oxygen in a sealed capacity associated with a calibrated orifice is generally safer. Nevertheless, this type of device can have a relatively large volume for storage in an airplane. In addition, the installation and maintenance of the hood may in some cases be problematic for some users especially in stressful situations. Known solutions use half-masks or masks covering the entire face. These solutions pose sealing problems because sealing is difficult to achieve in the context of equipment that is intended to be universal. To avoid a loss of tightness known systems are relatively uncomfortable and require a time of implementation (positioning strap, loops or elastics) relatively important. In addition, the breathing resistance is relatively important (the half mask is used to channel the fluids in pipes with filter cartridges at its ends). An object of the present invention is to overcome all or part of the disadvantages of the prior art noted above.
    [0002] For this purpose, the hood according to the invention, moreover in conformity with the generic definition given in the preamble above, is essentially characterized in that the base element comprises at least two rigid parts connected by a joint, the two parts being relatively movable between a first folded position preventing the passage of a head in the hood through the base member and a second unfolded position of use allowing the passage of a head in the hood through of the basic element. Furthermore, embodiments of the invention may comprise one or more of the following features: the two parts of the base element consist of two curved tubular portions connected at a joint, the two parts forming an open ring in unfolded position, - the opening of the ring formed the two parts in unfolded position is located at the front face of the hood, that is to say on the side of the hood comprising the transparent window, the two parts of the base element pivot relatively to the level of the articulation between the folded and unfolded positions in an angular range between thirty and one hundred and eighty degrees, the two parts of the element of the base are constituted respectively of a tubular oxygen tank and a carbon dioxide filtration cartridge, the filtration cartridge comprising an inlet communicating with the volume i the inside of the flexible envelope and a filtered air outlet opening into the interior of the flexible envelope, the outlet orifice of the tubular oxygen tank and the filtered air outlet of the filtration cartridge being arranged relatively to form a venturi device, the at least two parts of the base element comprise two tubular oxygen tanks articulated between and having at least one oxygen outlet opening opening into the flexible envelope, in its folded position, the gas under pressure of the oxygen tank is not put in fluidic relation with the outlet orifice while in its unfolded position the pressurized gas of the oxygen tank is put in relation with the orifice of outlet, the hood comprises a removable shutter preventing the oxygen outlet of the oxygen tank through the outlet orifice when the base element is in the folded position and automatically allowing the exit of oxygen. from the oxygen tank through the outlet port when the base member is moved from its folded position to its unfolded position, the removable plug is moved and / or mechanically broken by cooperation with a stop of the hood when the base member is moved from its folded position to its unfolded position, - the movable shutter is located at the joint, - the articulation of the base member comprises a ball joint provided with a male part and a female part located respectively on the two rigid parts, - the outlet orifice comprises a nozzle oriented along a portion of one of the two rigid parts, - the hood comprises mechanical stops respectively defining 25 the folded and unfolded positions, the hood comprises a mechanism for maintaining the relative position of the two rigid parts by elastic deformation in at least one of the positions of: the folded position, the unfolded position, - the base element is integral with the base of the flexible envelope, 30 - in the unfolded position the base element has the general shape of a closed ring or an open ring, especially a "C" shape - the base of the flexible envelope comprises a flexible diaphragm or a watertight collar intended to be mounted around the neck of a user, - in the folded position, the transverse dimension (in a direction perpendicular to the up / down axis) of the hood) the largest of the central opening delimited by the base element is between five and ten cm, in unfolded position, this largest transverse dimension of the central opening delimited by the base element is between twenty and forty centimeters, - a deployment member such as a spring is provided between the two folding parts, said deployment member exerting on the base member to arrange it in its unfolded position, - the hood comprises a flexible suspension member disposed within the flexible envelope, the suspension member forming a hood or cap having a surface smaller than the surface of the outer flexible envelope, at least a part of the edge of the organ of suspension is rigidly connected to the flexible envelope, the suspension member being intended to rest on the top of the head of the user at a height intermediate the base and the top of the hood, - the suspension member comprises a portion comprising at least one of: a flexible mesh, a fabric, a fabric, an elastic zone, the suspension member comprises a rear portion comprising at least one of: a flexible mesh, a fabric, a fabric, an elastic zone, said rear portion being connected to the rear portion of the flexible envelope and being intended to rest on the rear part of the top of the head of the user of the hood, the rear portion is connected at the lower rear part of the flexible envelope, the suspension member comprises a portion, in particular a front portion comprising at least one of: a rigid or semi-rigid portion such as a portion of a cap; front portion comprises at least one of: a rigid or semi-rigid piece forming a cap visor, one end of which is connected to the flexible envelope above the window, so as to keep the flexible envelope at a distance laterally; compared to the user of the hood. The invention may also relate to any alternative device or method comprising any combination of the above characteristics or below.
    [0003] Other features and advantages will appear on reading the description below, with reference to the figures in which: - Figure 1 shows a front view, schematic and partial and partly in transparency, illustrating the structure of a a possible embodiment of a hood according to the invention in unfolded position of use, - Figure 2 a view similar to Figure 1 in which the hood is in the folded storage position, - Figure 3 shows a side view. , schematic and partially transparent, illustrating the structure of another example of possible embodiment of a hood according to the invention, - Figure 4 shows a front view, schematic and partial, illustrating the hood of Figure 3, - FIG. 5 represents a view from below of a detail of the hood of FIG. 1 or FIG. 3; FIGS. 6 and 7 represent perspective views of a basic element of the hood according to the invention; FIG. 8 illustrates an example of a device for injecting gas with a venturi effect that can be implemented in the hood according to the invention; FIG. 9 represents a schematic view illustrating the invention; integration and operation of the gas injection device in the hood according to the invention, - Figure 10 shows a sectional view of a detail of an embodiment of a joint of the balaclava base element. according to the invention in a folded position, - Figure 11 shows a view similar to that of Figure 9 in an unfolded position, - Figure 12 shows a view similar to that of Figure 10 in an unfolded position according to another plane sectional view illustrating the gas supply port for feeding the interior of the hood, - Figure 13 shows a top view of a base element of the hood in the folded position according to another embodiment of possible realization.
    [0004] FIG. 1 schematically represents a respiratory protection hood 1 comprising a sealed flexible envelope 2 provided with a transparent window 20 intended and threaded onto the head of a user. The flexible envelope 2 waterproof is composed for example of a waterproof fireproof or leakproof textile, for example of the type marketed under the trademark Nomex® and coated with a waterproof coating. This envelope 2 is intended to be threaded on the user's head to isolate the user's head from the outside environment and to integrate the features described below. To achieve a seal at the user's neck and as described in Figure 5, the base of the flexible envelope 2 may comprise a flexible diaphragm or a tight collar 12 to be mounted around the neck of a user . For example, this lower flange 12 comprises a perforated plastic sheet (for example a polymer, especially a self-extinguishing polymer such as Neoprene) to allow the user's head to pass elastically and then tighten his neck thereafter. The lower hole for the head can be adapted to any neck perimeter between 28 and 42cm for example. The flexible envelope 2 preferably delimits a volume of about ten liters around the user's head which makes it possible to form a breathable gas buffer volume sufficient to absorb the user's ventilation peaks. This inflated volume also makes it possible to absorb any offset between the decreasing flow rate of an oxygen source 3 and the relatively constant oxygen requirements of the user. Preferably, the flexible envelope 2 is provided on its front face with a curved visor treated anti-fog on its inner side and anti-scratch on its outer face forming a viewing window 20 for the user. As can be seen in FIG. 3, the flexible envelope 2 may also be provided with a voice membrane 21 to facilitate direct communication or via an intercom or through a megaphone. The lower part of the casing 2 comprises a base element 3, 4 of rigid base 30 of generally annular shape intended to be arranged around the neck of the user. The basic element 3, 4 comprises a tank 3 of tubular oxygen oxygen under pressure. This base element forms a mass ensuring the holding and the maintenance of the hood 1.
    [0005] The hood 1 also comprises a calibrated outlet orifice 7 connected to the oxygen tank 3 and opening into the internal volume of the casing 2, preferably in the rear part of the hood 1. The oxygen tank 3 has, for example a volume of between 0.20 and 0.4 liters and stores gas at a pressure of, for example, between 150 and 200 bar. The calibrated outlet orifice 7 has for example a diameter of between 0.04 and 0.15 mm to release for example between twenty and sixty liters of oxygen for fifteen minutes. The tank 3 may consist of a tube made of stainless steel or other material, having a diameter of, for example, between 30 to 50 mm.
    [0006] According to an advantageous characteristic, the base element comprises at least two rigid parts 3, 4 connected to one another by a hinge 5. The two parts 3, 4 are relatively movable between a first folded position preventing the passage of a head in the hood 1 through the element 3, 4 base (see Figure 2) and a second unfolded position for use allowing the passage of a head in the hood 1 through the element 3 , 4 basic (see Figure 1). The base element is preferably secured to the base of the flexible envelope 2, for example integrated in a sleeve formed by the flexible envelope 2. In the example shown in the figures, the two hinged parts 3, 4 of the base element consist of two curved tubular portions connected at a hinge 5. The two parts 3, 4 form an open ring in the unfolded position. (eg C-shape as seen in Figure 7). In folded position (see Figure 6, the two parts 3, 4 describe an ellipse shape). For example, in the folded position, the largest transverse dimension (in a direction perpendicular to the up / down axis of the hood) of the central opening delimited by the base element 3, 4 is between five and ten cm. This does not allow to pass a head. In unfolded position, this largest transverse dimension of the central opening delimited by the base element is for example between twenty and forty centimeters, which allows to spend the vast majority of heads. For example, the two parts 3, 4 of the base piece pivot relative to the level of the hinge 5 between the folded and unfolded positions in an angular range between thirty and one hundred and eighty degrees (the angle between the two parts 3 , 4 may vary for example between thirty degrees in the folded position and one hundred eighty degrees in unfolded position). In the example shown, the base element consists of two rigid parts 3, 4 hinged. Of course, it is possible to envisage a structure with more than two articulated parts (three, four ...). Similarly, alternatively, the base member 3. 4 could be in the form of a closed ring (articulated chain for example) or any other suitable form. Likewise, in the example above, the two parts consist respectively of a tank 3 of oxygen under pressure and a cartridge 4 of filtration. Alternatively, the two hinged parts 3, 4 could consist respectively of two separate oxygen tanks articulated. The carbon dioxide filtration can in this case be passive or active type and integrated with other (third) articulated element (foldable) or not. As illustrated schematically in Figure 13, the base member may comprise a return member 23, such as a spring which urges the parts 3, 4 articulated to a specific position, including the unfolded position. The return member 23 is preferably located at the hinge 23. As illustrated in FIGS. 10 to 12, the hinge 5 of the base member may comprise a ball joint provided with a male piece 10 (by spherical example) and a complementary female part 11 respectively belonging to the two parts 3, 4 rigid. As illustrated in Figure 12, pins 24 may be provided to mechanically link the male and female portions 10 and 11 and to limit the relative pivotal movement of the two parts in a single plane.
    [0007] Similarly, the hood 1 may comprise one or more stops 14, 15 mechanical defining respectively the folded and unfolded positions. These stops may consist of contact areas between the two parts 3, 4, in particular at the joint 5 (see Figures 10 and 11). The hood 1 may also optionally include a mechanism for maintaining the relative position of the two rigid portions 3, 4 rigidly. For example, an elastic deformation system (snap or other) may be provided to form a "hard point" in at least one of: the folded position, the unfolded position.
    [0008] Preferably, the opening of the ring formed by the unfolded position the two parts 3, 4 is located at the front face of the hood 1. That is to say, the open portion of the ring is positioned on the side of the hood 1 comprising the transparent window 20. This facilitates the introduction of the hood 1 on the head. This positioning of the opening facilitates the passage of the user's figure and in particular possible glasses, nose, chin .... This structure balances the mass distribution around the user's head. In addition, the center of gravity of the system can thus be slightly shifted backwards (relative to the center of the user's head).
    [0009] Preferably, the hood 1 comprises a cartridge 4 for filtering the air in the flexible envelope 2 to remove the carbon dioxide generated by the expiration of the user. The filter cartridge 4 comprising an inlet 22 communicating with the internal volume of the flexible envelope 2 (preferably at the front of the hood) and an outlet 6 of filtered air opening into the interior volume of the envelope 2 (preferably at the back of the hood). In this case, and as illustrated in the figures, the two parts 3, 4 of the base part consist respectively of a tubular oxygen tank 3 and a carbon dioxide filtration cartridge 4. These two devices preferably have a similar mass and volume, which gives a good balance to the whole. Preferably, the filtration cartridge 4 uses soda lime in granules to capture the carbon dioxide. Of course, any other suitable filtration system can be envisaged. For example, the filtration cartridge 4 may also use lithium hydroxide. The filtration product can be stored in the cartridge in the form of granules, sheets with channels or porous mattresses for example. In general, the system capturing carbon dioxide can be of the passive type (lining of the interior of the breathable volume by a compound that absorbs CO2) or active (the gas to be purified is captured and channeled through the element of filtration). The carbon dioxide fixation reaction is generally exothermic. This makes it possible to mix the relatively hot gases from the filter cartridge 4 with the relatively cooler oxygen leaving the reservoir 3. This makes it possible to maintain a gas temperature that is very acceptable for the user. Also preferably, and as illustrated in FIGS. 8, 9 and 12, the outlet orifice 7 of the tubular oxygen reservoir 3 and the filtered air outlet 6 of the filtration cartridge 4 can be arranged relatively (in FIG. concentrically and coaxially) to form a venturi device. Figure 9 shows the flow of gas via arrows. The oxygen is supplied by the oxygen reservoir 3 to the venturi which then generates a suction through the filter cartridge 4. The breathable mixture enriched with oxygen is delivered into the flexible envelope. This venturi device thus makes it possible to use the expansion energy of the gas supplied by the tank 3 under pressure to create a recirculation stream through the filter cartridge 4 (soda lime or lithium hydroxide). Preferably, the venturi has a driving ratio (intake flow / injected flow rate) of between 10 and 20 over the injected flow rate range of 1 to 5 liters per minute, for example. This system for capturing carbon dioxide is thus independent of the user's breathing. In addition, during the first fifteen minutes of use, the venturi blows for example between twenty and forty five liters of gas per minute. This creates a noise (blowing) audible by the user. This tells him that the equipment is working properly. This active carbon dioxide filtration solution produced by the user can be supplemented (or replaced) by a passive filtration solution, such as: lining the interior of the breathable volume with a compound that absorbs carbon dioxide or carbon dioxide. positioning one or more panels of compounds that absorb carbon dioxide at the right places (for example near the mouth of the user). As illustrated in FIG. 12, the outlet orifice 7 delivers the gas via a nozzle. This nozzle may be oriented along, that is to say, tangentially, to a portion of one of the two rigid portions 3, 4. Of course, other arrangements 30 are possible. Thus, the gas delivery nozzle can make an angle, for example a right angle with respect to the base member. Preferably, the activation of the gas (release of oxygen in the hood 1 is triggered (preferably automatically) when the hood 1 is unfolded.
    [0010] Thus, for example in its folded position, the pressurized gas of the oxygen tank 3 is not put in relation with a fluidic circuit supplying the outlet port 7 while in its unfolded position the pressurized gas of the tank 3 oxygen is connected to a fluid circuit supplying the outlet orifice 7. This triggering is preferably generated as soon as the pivoting movement of the articulation exceeds a determined threshold of a few degrees, for example between three and ten degrees. For example, and as illustrated in the example of Figure 10, the hood 1 may comprise a removable shutter 8 disposed at the outlet of the oxygen tank 3 which prevents the flow of oxygen to the calibrated outlet orifice 7 when the base member 3, 4 is in the folded position. The shutter 8, however, does not prevent the oxygen outlet of the oxygen tank 3 through the outlet port 7 when the base member 3, 4 is moved from its folded position to its unfolded position.
    [0011] For example, the removable shutter 8 is moved and / or mechanically broken by cooperation with a stop 9 of the hood 1 when the base member 3, 4 is moved from its folded position to its unfolded position. As illustrated in the example of Figures 10 and 11, after a few degrees of relative rotation of the two parts 3, 4, the shutter 8 abuts against a side 9 of the other part 4. For example the shutter 8 is carried by an articulated end 5 of the reservoir 3 while the stop which moves or break this shutter 8 is carried by an adjacent articulated portion of the other part 4 (the filter cartridge 4 in this example). For example, when unfolding element 3, 4 basic; a rim cuts the shutter 8. The base element 3, 4 is dimensioned so that no user can put on the hood 1 without releasing the flow of oxygen. The risk of forgetting activation of the hood 1 by the operator is thus eliminated and the activation of the gas delivery does not waste time on the user. As illustrated in FIG. 11, the hinge 5 or any other portion of the hood 1 may comprise a housing 24 (for example a blind hole) provided for recovering and trapping the broken shutter 8 (shutter not shown in FIG. ).
    [0012] Of course, as a variant of a shutter 8 permanently broken shutter 8 could be simply movable and could return elastically in its closed position when the hood 1 is folded. Regardless of its articulated structure and the possible automatic release of oxygen during unfolding, the hood 1 may optionally comprise an internal structure as described below with reference to the embodiment example of FIGS. 3 and 4. , the hood 1 may comprise, inside the flexible casing 2, a flexible suspension member 16. This suspension member 16 is fixed to the flexible casing 2 and forms a hood or inner cap having a surface smaller than the surface of the outer shell 2. At least a portion of the edge of the suspension member 16 is connected (glued, sewn or other) to the flexible envelope 2, preferably at a determined distance from the upper end of the flexible envelope 2. In this way; when the user puts on the hood 1, this suspension member 16 rests on the top of the user's head at an intermediate height between the base and the top of the hood 1 (see FIG. 3). That is to say that, especially when the hood 1 is under pressure (oxygen injected into the internal volume of the flexible envelope 2), the hood 1 rests (is suspended) by this member 16 of suspension on the top of the user's head. For example the suspension member 16 is hooked to the casing 2 at the front and rear and laterally (for example a point of attachment at the front, a point of attachment at the rear and two points of attachment side of the casing 2.This distributes the weight of the hood on the head of the user and also makes it possible not to rest the base element 3. 4 (Tank, filter cartridge ...) on the shoulders of the user, in this way, the hood 1 can follow the movements of the user's head, the window 20 remaining in particular always in front of the eyes of the user. In addition, this structure determines the position vertically the viewing window 20 with respect to the top of the head of the user.The hood 1 can thus overcome a clamping loop and / or a strap to adjust. to provide a good support because there is a low dispersion of morphologies top of the head potential users. The structure of the hood 1 is thus universal and adapts well to a large number of different users. In addition, this structure allows the outer shell 2 to inflate to form a sufficient buffer volume without "floating" and moving excessively around the user's head. The suspension member 16 preferably comprises at least one portion 17 comprising at least one of: a flexible mesh, a fabric, a fabric, an elastic zone, a rigid zone, a semi-rigid zone. In the example of FIGS. 3 and 4, the suspension member 16 comprises, from the rear to the front of the hood 1: a rear portion 17 comprising a flexible mesh, a first front portion 18 comprising a rigid piece or semi-rigid and a second piece 19 rigid or semi-rigid forming a cap visor. The rear portion 17 is connected to the rear portion of the flexible envelope, preferably at the bottom base thereof. The end of the second front portion 19 (cap visor) is connected to the front end of the flexible envelope, preferably above the viewing window. This makes it possible to move the transparent window away from the user's face by a determined distance (see FIG. 3). This facilitates the use of equipment with eyeglasses and improves the comfort of users even those with large noses. The rear portion 17, preferably composed of a flexible or elastic mesh essentially rests on the back half of the user's head and makes it easy to adapt to users wearing buns or hairbolts in the hair (hostesses). air for example). This allows the hood to fit and position itself properly on any type of user by distributing the center of gravity of the hood 1 for the greater comfort of the user. Of course, the suspension member 16 could be formed of a single flexible or semi-rigid portion. The suspension member 16 makes it possible to suspend the base element 3, 4 and to refocus the center of gravity of the hood with respect to the head of the user by adapting to any type of hairstyle. This suspension system makes it possible to dissociate the functions of maintaining the hood and forming a buffer volume. Thus the hood 1 may be the adequate buffer volume while being well positioned and following the movements of the head. Thus, while being simple and inexpensive structure, the hood 1 according to the invention has many advantages over the prior art. In particular, the hood 1 has improved ergonomics offering the possibility of having a large volume of gas around the head of the user. Its structure, placement and wearing limits the risk of error, discomfort and the feeling of confinement. The hood has a universal structure that adapts to a wide dispersion of morphologies (sizes, glasses, hairstyles ...) The size is not increased and even reduced in the case of the foldable structure. Thus, the invention may have the following advantages: The purification of the carbon dioxide in the hood 1 may be independent of the user's breathing. That is to say, there is no risk of poor cleaning even if the user breathes in a small puff (short / panting breathing typical of a state of panic). On the contrary, solutions using passive filtrations are generally less efficient and require to oversize the amount of filtering agent. Unlike other known devices, the respiratory resistance is zero or very low which gives a good user comfort for the user. Unlike known solutions using half-masks, the hood is not exposed to a risk of leakage.
    [0013] The active carbon dioxide filtration solution optimizes the amount of on-board filtering entity. The hood does not use moving parts to supply the gas. This increases the reliability of the whole. The venturi device can be made by plastic injection. This reduces its cost. The ergonomics of the hood are improved due to the balanced distribution of its mass and its non-awkward positioning. The hood can be installed easily and comfortably even if the user has glasses.
    [0014] The foldable structure is reliable and solid via its rigid articulation and its sealing for any angular opening Compared with the known solutions (venturi system placed behind the head of the user, in his back or on his torso) the solution above is better balanced and more ergonomic around the head of the user.
    权利要求:
    Claims (14)
    [0001]
    REVENDICATIONS1. Respiratory protection hood comprising a sealed flexible envelope (2) intended to be threaded onto a user's head, the flexible envelope being provided with a transparent window (20) and comprising, in its lower part, an element (3, 4) rigid base of generally annular shape intended to be arranged around the neck of the user, the base element comprising a reservoir (3) of tubular oxygen oxygen pressure provided a orifice (7) output calibrated opening into the internal volume of the flexible casing (2), characterized in that the base element comprises at least two rigid parts (3, 4) connected by a hinge (5), the two parts (3, 4) being movable relatively between a first folded position preventing the passage of a head in the hood (1) through the element (3, 4) base and a second unfolded position of use allowing the passage of a head in the hood (1) through the element (3, 4) basic.
    [0002]
    2. Hood according to claim 1, characterized in that the two parts (3, 4) of the base element consist of two bent tubular portions connected at a joint (5), the two parts (3, 4) forming an open ring in unfolded position.
    [0003]
    3. Hood according to claim 2, characterized in that the opening of the ring forms the two parts (3,
    [0004]
    4) in unfolded position is located at the front face of the hood (1), that is to say the side of the hood (1) comprising the window (20) transparent. 4. Hood according to any one of claims 1 to 3, characterized in that the two parts (3, 4) of the base member pivot relatively to the level of the joint (5) between the folded and unfolded positions according to an angular range between thirty and one hundred and eighty degrees.
    [0005]
    5. Hood according to any one of claims 1 to 4, characterized in that the two parts (3, 4) of the base element consist respectively of a reservoir (3) of tubular oxygen and a cartridge (4) for filtering carbon dioxide, the filter cartridge (4) comprising an inlet (22) communicating with the interior volume of the flexible envelope (2) and an outlet (6) of filtered air opening into the volume inside the flexible envelope (2), the outlet orifice (7) of the tubular oxygen reservoir (3) and the outlet (6) of filtered air of the filter cartridge (4) being arranged relatively for to form a venturi device.
    [0006]
    6. Hood according to any one of claims 1 to 4, characterized in that the at least two parts (3, 4) of the base element comprise two tanks (3) of tubular oxygen articulated between and having at least an oxygen outlet opening (7) opening into the flexible envelope (2).
    [0007]
    7. Hood according to any one of claims 1 to 6, characterized in that, in its folded position, the gas under pressure of the reservoir (3) of oxygen is not put in fluid relation with the orifice (7). ) while in its unfolded position the pressurized gas of the oxygen tank (3) is connected to the outlet orifice (7).
    [0008]
    8. Hood according to any one of claims 1 to 7, characterized in that it comprises a removable shutter (8) preventing the oxygen outlet of the reservoir (3) of oxygen through the orifice (7) output when the base member (3, 4) is in the folded position and automatically allowing oxygen outlet of the oxygen tank (3) through the outlet port (7) when the base member (3, 4 ) is moved from its folded position to its unfolded position.
    [0009]
    9. Hood according to claim 8, characterized in that the removable shutter (8) is moved and / or broken mechanically by cooperation with a stop (9) of the hood (1) when the base element (3, 4 ) is moved from its folded position to its unfolded position.
    [0010]
    10. Hood according to claim 7 or 8, characterized in that the shutter (8) removable is located at the joint (5).
    [0011]
    11.Coulle according to any one of claims 1 to 10, characterized in that the articulation (5) of the base member comprises a ball joint connection provided with a male part (10) and a female part ( 11) respectively on the two rigid parts (3, 4).
    [0012]
    12. Hood according to any one of claims 1 to 11, characterized in that the orifice (7) comprises a nozzle directed along a portion of one of the two parts (3, 4) rigid.
    [0013]
    13. Hood according to any one of claims 1 to 12, characterized in that it comprises mechanical stops (14, 15) respectively defining the folded and unfolded positions.
    [0014]
    14. Hood according to any one of claims 1 to 13, characterized in that it comprises a stable holding mechanism of the relative position of the two parts (3, 4) rigid by elastic deformation in at least one of: the folded position, the unfolded position.
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    FR2720949A3|1995-12-15|Face mask with oxygen generating cartridge
    同族专利:
    公开号 | 公开日
    US20160030776A1|2016-02-04|
    US10500425B2|2019-12-10|
    CN105311769B|2021-04-02|
    CN105311769A|2016-02-10|
    ES2661871T3|2018-04-04|
    FR3024370B1|2016-07-22|
    EP2979561A1|2016-02-03|
    EP2979561B1|2018-01-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4552140A|1983-04-29|1985-11-12|Erie Manufacturing Co.|Emergency escape device|
    EP1793147A2|2005-11-30|2007-06-06|L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude|Storage device for fluid under pressure, mask and actuator comprising such a device|
    WO2014031671A1|2012-08-20|2014-02-27|Jamart Tt, Llc|Respirator assembly|
    US2296338A|1939-07-29|1942-09-22|Gen Motors Corp|Safety helmet|
    US2335474A|1940-09-18|1943-11-30|Herbert W Beall|Pressure producing apparatus|
    GB752246A|1953-07-09|1956-07-11|Rene Rossetti|Closing device for containers|
    US4116237A|1977-02-07|1978-09-26|Norman Birch|Emergency breathing apparatus|
    FR2582524B1|1985-05-31|1989-01-13|Air Liquide|PROTECTIVE HOOD AGAINST FUMES AND HYPOXIA|
    FR2621249B1|1987-10-02|1990-05-04|Air Liquide|BREATHING PROTECTIVE HOOD AND SAFETY EQUIPMENT FOR AIRCRAFT|
    US4875718A|1988-12-02|1989-10-24|Marken Robert E|Swivel connector for preventing kinking of flexible medical hoses|
    US5113854A|1990-01-25|1992-05-19|Figgie International, Inc.|Quick-donning protective hood assembly|
    NO178529C|1991-08-27|1996-04-17|Ottestad Nils T|Self-contained emergency breathing device|
    CN1135924A|1995-05-18|1996-11-20|胡炜|Life saving helmet|
    FI973847A|1997-09-30|1999-03-31|Euromaski Oy|Device for a protective device|
    US6367085B1|1998-12-21|2002-04-09|3M Innovative Properties Company|Head suspension for an air supplied hood system|
    US6550479B1|2000-07-26|2003-04-22|James Neil Duxbury|Personal respirator|
    AU2003259270A1|2002-07-26|2004-02-16|University Of Medicine And Dentistry Of New Jersey|Method and apparatus for evacuating nitrous oxide|
    FR2861311B1|2003-10-23|2007-08-24|Equip Medicaux Et Moyens Avece|HOLDING DEVICE FOR RESPIRATORY MASK.|
    DE202004000890U1|2004-01-21|2004-04-01|Wöbke, Klaus|bangle|
    US7188869B2|2004-02-24|2007-03-13|Garraffa Dean R|Scuba regulator connector using a sealed ball swivel|
    US20070084463A1|2005-09-09|2007-04-19|Niemann Bradley Q|Breathing Apparatus|
    CN201239446Y|2008-08-05|2009-05-20|王利民|Portable header cap for protecting oxygen supply|
    GB201108199D0|2011-05-16|2011-06-29|Scott Health & Safety Ltd|Breathing mask with head top|
    US9180262B2|2012-05-15|2015-11-10|JettStream, Inc.|Delivery of nebulized medicines|FR3006900B1|2013-06-12|2015-05-29|Air Liquide|RESPIRATORY PROTECTION EQUIPMENT|
    FR3042421B1|2015-10-15|2018-10-26|L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude|RESPIRATORY PROTECTION HOOD|
    US11259578B2|2020-11-09|2022-03-01|Golden Galaxy Corporation|PPE with rotating assembly providing multiple face covers|
    US11065480B2|2020-11-09|2021-07-20|Golden Galaxy Corporation|PPE with rotating assembly providing multiple face covers|
    法律状态:
    2015-08-20| PLFP| Fee payment|Year of fee payment: 2 |
    2016-02-05| PLSC| Search report ready|Effective date: 20160205 |
    2016-08-22| PLFP| Fee payment|Year of fee payment: 3 |
    2017-08-22| PLFP| Fee payment|Year of fee payment: 4 |
    2018-08-27| PLFP| Fee payment|Year of fee payment: 5 |
    2020-05-08| ST| Notification of lapse|Effective date: 20200406 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1457490A|FR3024370B1|2014-08-01|2014-08-01|RESPIRATORY PROTECTION HOOD|FR1457490A| FR3024370B1|2014-08-01|2014-08-01|RESPIRATORY PROTECTION HOOD|
    ES15174732.6T| ES2661871T3|2014-08-01|2015-07-01|Respiratory protection hood|
    EP15174732.6A| EP2979561B1|2014-08-01|2015-07-01|Breathing protection hood|
    US14/814,886| US10500425B2|2014-08-01|2015-07-31|Full hood respirator|
    CN201510463433.5A| CN105311769B|2014-08-01|2015-07-31|Full mask respirator|
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