Security device for controlling air exchange in the context of fire

Abstract

This document discloses a safety device for installation in wall openings, such as door frames or recesses, to effectively control airflow in hazardous environments such as during fires. The device comprises an adjustable frame equipped with an actuator, allowing for quick and secure installation to accommodate various opening widths. This document also discloses a carrying bag for such a safety device.

Description

Scope of the invention

[0001] The present invention relates generally to an air exchange control system designed to prevent potentially dangerous air movements between different environments. More particularly, the invention may relate to an air exchange control system for applications where air exchange management is critical, especially in the event of fires. State of the art

[0002] In a fire, the equipment and objects in a room fuel the flames and can produce a considerable amount of smoke and pyrolysis gases. This smoke, rich in toxic particles and harmful gases such as carbon monoxide, poses a major threat to the health and safety of individuals. Smoke from a confined fire is particularly dangerous because it accumulates and concentrates rapidly in the space, reducing visibility and significantly decreasing air quality. The combustion products released by common materials in homes or offices, such as plastics, textiles, and building materials, release highly toxic compounds. These compounds can include hydrocarbons, formaldehyde, and hydrogen cyanide, among others, which are known to be lethal even at low concentrations.

[0003] Rapid intervention is crucial for saving lives in this type of scenario. Not only is it essential to quickly control the fire to prevent its spread, but managing the smoke itself is also vital. Effective airflow control can significantly reduce the danger. By preventing the introduction of fresh air that could further fan the flames and by limiting the spread of toxic fumes to unaffected areas, emergency responders can improve the safety conditions for evacuations.

[0004] Air exchange control devices, such as smoke barriers or door insulation systems, play a crucial role in confining smoke to the already affected area while preventing outside air from entering. These devices must be designed for rapid deployment, ease of operation even when wearing heavy protective equipment, and effectiveness in containing smoke and toxic gases for as long as possible, thus giving occupants a greater chance of survival and providing emergency responders with better access to fight the fire and conduct rescues.

[0005] The main challenge of air exchange in a fire situation lies in the risks associated with managing airflow between interior spaces. During a fire, opening a door can cause an uncontrolled influx of fresh air (containing oxygen) that can fuel the fire, intensify the flames, and rapidly spread smoke and toxic gases into previously undamaged areas. This phenomenon can severely compromise escape routes and endanger the lives of occupants and emergency responders.

[0006] Furthermore, the hose(s) used by the firefighters prevent the door from closing completely, which can allow an air movement to occur and consequently an exit of smoke and an entry of air and oxygen respectively.

[0007] Traditional air exchange management systems, such as certain types of barriers or tarpaulins used to block openings, are not only time-consuming to install but also impractical in emergency situations. The average time required to deploy these systems often exceeds one minute, which is unacceptable in a context where every moment lost can have fatal consequences. Furthermore, these devices generally require two people for proper installation, which is not ideal when human resources are limited during an emergency.

[0008] Firefighters, equipped with thick gloves, breathing apparatus, and other heavy survival gear, find it particularly difficult to handle complex or delicate devices. Systems requiring fine manipulation or precise adjustments are therefore extremely impractical in the heat of the moment. Ergonomics and ease of use are often overlooked in the design of existing devices, which slows down rescue operations and increases the risks for response teams. General description

[0009] One of the objectives is to overcome the aforementioned shortcomings in order to improve the effectiveness of fire response, reduce installation times, and / or increase the safety of victims and rescue workers. This could involve, for example, a suitable safety device for controlling airflow that is not only quick and easy to deploy, but also practical to transport and use, even when worn with personal protective equipment, and ideally operable by a single person.

[0010] The first aspect of the disclosure concerns a security device comprising an adjustable frame equipped with an actuator (e.g., a pressure-operated cylinder) to facilitate quick and secure installation. This adjustable frame is configured to be mounted on door jambs (or on the opening of a wall). The adjustable frame includes a fixed part and a moving part designed to move (e.g., linearly) relative to the fixed part, which is driven by the actuator.

[0011] In one embodiment, the safety device may include a first gripping device (for example, a handle) intended to be grasped by the user in order to position the safety device in its location. The safety device may further include a partition curtain intended to limit air exchange between two spaces in use; for example, when the door is open and the device is installed at the opening.

[0012] Preferably the actuator is configured to convert a form of energy (e.g. at least partially stored in the actuator) into mechanical motion so as to move the moving part relative to the fixed part and / or firmly maintain a position (e.g. a position of the moving part relative to the fixed part).

[0013] In one embodiment, the safety device may include an actuator actuation mechanism. This actuation mechanism may be arranged in the immediate vicinity of the first gripping device. In this way, the actuation mechanism can be positioned to allow the user to activate the actuator while maintaining a firm grip on the device. This proximity allows the operator to quickly deploy the adjustable frame of the device without having to change their grip or reposition themselves, which is particularly advantageous in situations where speed is critical.

[0014] The actuation mechanism may include a lever, a push button, or a mechanism configured to be activated by the rotation or movement of the first gripping device. The actuation mechanism may further include a connection system (by cable or rod) linked to the actuator. When the user operates the mechanism, the actuator is activated, causing the moving part of the frame to expand, thus adjusting the device to the door jamb for a secure and stable fit. In one embodiment, the actuator is configured to allow adjustment / movement of the moving part and rigid fixation of the device without any effort from the user (the user simply positions the device without having to exert substantial force to deploy and fix it).

[0015] The safety device may include a second gripping device arranged on the moving part of the frame. This second gripping device can be configured to allow the user to grasp the moving part and assist its movement to optimize the device's positioning.

[0016] The safety device may further include a disengagement control configured to release the tension or pressure applied by the actuator, thus facilitating removal of the device without requiring additional force from the user.

[0017] The safety device may also include a hook configured to hold the partition curtain in an open position. When in use, the curtain is configured to have two positions: a first position called "closed", which limits air exchange, and a second position called "open", which facilitates the passage of people (ideally when the fire is being brought under control and the need to limit air exchange becomes less critical).

[0018] The "open" position can facilitate operational ventilation of a defensive or offensive type by intervention forces to allow, with the help of one or more exits (window, doors, automatic or manual smoke evacuation system) and a fan, the evacuation of smoke, pyrolysis gases and heat.

[0019] A second aspect of the disclosure concerns a carrying case for a safety device (for example, a safety device as described above). Preferably, the carrying case includes a folding cover having an open and a closed position. The folding cover may include several flaps forming a cross when the cover is open, and the whole forming a compartment inside which the safety device can be placed when the cover is closed.

[0020] In one embodiment, the carrying bag may include an opening allowing the user to grasp a gripping device (e.g., a handle) (e.g., the safety device) and a strap configured so that the user can pull the strap to fully open the carrying bag with one hand while holding the safety device with the other. The carrying bag may further include a strap for carrying it over the shoulder. List of figures

[0021] The invention will be better understood below by means of some illustrated examples.

[0022] It goes without saying that the invention is not limited to these modes of embodiment. Figure 1 diagram shows a general embodiment of the safety device comprising an adjustable frame equipped with an actuator. Figures 2a to 2dillustrate sequentially the process of installing the security device on a door frame. Figures 3a and 3b show the details of the disengagement mechanism allowing for easy removal of the safety device. Figure 4 exposes a wireframe or transparency embodiment view to visualize internal components. Figure 5 displays an exploded view showing an embodiment similar to that of the Figure 4 . Figure 6 shows the integration of a flexible curtain into the security device. Figures 7a and 7b illustrate a carrying bag, showing the foldable cover in open and closed positions. Numerical references used in the figures

[0023] 1: Safety device 2: Adjustable frame 3: First part of the frame (fixed part) 4: Second part of the frame (moving part) 5: Movement of the moving part relative to the fixed part 6: Actuator 7: First gripping device (handle) 8: Second gripping device (on the moving part) 9: Actuator actuation mechanism 10: Disengagement mechanism 11: Cable connecting the actuation mechanism to the actuator 12: Hook 100: Carrying bag 101: Folding cover 102: Opening on the cover to access the handle 103: Strap on the cover to facilitate opening 104: Cover flaps 105: Hook and loop fasteners on the cover Detailed description of the invention

[0024] In this document, the detailed description of the invention includes embodiments of devices, systems, and methods presented by way of illustration. It is understood that other embodiments are conceivable and may be implemented without departing from the scope or spirit of the invention. The detailed description that follows, therefore, should not be taken in a restrictive manner. Unless otherwise indicated, the scientific and technical terms used in this document have meanings commonly used by those skilled in the art. The definitions provided in this document are given to facilitate understanding of frequently used terms and are not intended to limit the scope of the invention.

[0025] Directional indications used in the description and claims, such as "up", "down", "left", "right", "superior", "inferior", and other directions or orientations, are mentioned for the sake of clarity with reference to the figures. These indications are not intended to limit the scope of the invention.

[0026] The verbs "to have", "to understand", "to include" or equivalent are used in this document in a broad sense and generally mean "includes, but not limited to".

[0027] The term "or" is generally used in a broad sense including "and / or" unless the context clearly indicates otherwise.

[0028] In this document, the terms "door jamb," "reveal," "wall opening," or equivalent are used broadly to refer to any opening in a wall that allows for the installation of the security device as described herein. This definition encompasses not only traditional structures forming a door frame, but also any other structural opening suitable for attaching or mounting the device. This includes, but is not limited to, openings without an existing door, passages through interior walls, windows, etc.

[0029] In this document, the terms "actuator," "pressure cylinder / actuator," "fluidic cylinder / actuator," "hydraulic cylinder / actuator," "pneumatic cylinder / actuator," "electric cylinder / actuator," or equivalent are used broadly to generically refer to a device that converts a form of energy (electrical, mechanical (spring, etc.), hydraulic, or pneumatic) into mechanical motion. For example, cylinders / actuators, which use a pressurized fluid (gas or liquid) to operate, capture the essence of using a fluid as a means of force transfer. These terms encompass gas cylinders / actuators, pneumatic cylinders / actuators, hydraulic cylinders / actuators, and hybrid cylinders / actuators that combine gas and liquid, such as oil. Principle and explanation of the security device :

[0030] In one embodiment, the safety device comprises a frame with adjustable dimensions, configured for installation on a door jamb or a wall opening. The adjustable frame allows for precise adaptation to various door jamb widths, thus offering increased application versatility. The frame adjustment mechanism can be actuated by a pressurized cylinder (e.g., a gas spring, although the cylinder or actuator can be pneumatic, hydraulic, or hybrid), a choice that contributes to several operational advantages. For example, a gas spring facilitates rapid installation of the device, essential in emergency situations where time is critical. Furthermore, a gas spring can ensure that the device remains firmly and securely attached to the door jamb throughout the intervention.However, depending on several possible embodiments, the actuator can be hydraulic, pneumatic, electric, mechanical, or telescopic. Preferably, the actuator can be pneumatic, hydraulic, or hybrid (combining, for example, gas and liquid, such as oil).

[0031] The actuator can be configured so that the operator can deploy the device quickly and with minimal physical effort. This system must also allow for easy handling by a single person, unlike existing systems that often require two people for proper installation. By simplifying the installation process, such an actuator significantly improves user safety and the effectiveness of fire response, contributing to the effective prevention of risks related to air exchange during rescue or firefighting operations.

[0032] Furthermore, the actuator can be configured for use even when operators are wearing fire-resistant gloves and using equipment that limits their dexterity and physical capabilities. Choosing an actuator optimizes not only the rapid deployment of the device but also its functionality in extreme conditions, ensuring safe and effective intervention even in the most hazardous situations.

[0033] The actuator can be configured to ensure secure compression between the two vertical door jambs. The force exerted by the actuator (e.g., gas-operated) can be calibrated to fall within an effective range, ensuring both safety and stability. The force deployed by the actuator can range from 10 to 50 newtons (N), with a preferred range between 20 and 40 N. More specifically, a force between 25 and 35 N can be considered ideal for optimizing device performance while ensuring adequate compression without damaging the door frame or compromising the structural integrity of the installation.

[0034] In one embodiment, the safety device further includes an eccentric device that may include a projecting portion that acts as a lever or cam. When the adjustable frame is correctly positioned in the opening, the firefighter lowers the projecting portion to actuate the eccentric device. The projecting portion may have an eccentric shape configured to create a significant holding force on the opening's jambs, ensuring a firm and stable hold of the adjustable frame within the opening's frame. To remove the device, the firefighter can raise the projecting portion, which rotates the eccentric device in the opposite direction, reducing the force exerted on the opening's jambs and thus disengaging the adjustable frame from the jambs, allowing for its easy removal.

[0035] The adjustable frame can be divided into two parts configured to move relative to each other, actuated by the actuator. Each part includes a gripping element, such as a handle, allowing the user to easily manipulate the device. During installation, these gripping elements can be configured to be firmly held by the user's hands. The adjustable frame may also include a mechanical stop configured to limit the movement of one part relative to the other.

[0036] The device is configured to adapt to openings of various sizes, and the actuator is configured to fit a range of target opening sizes. In one embodiment, the device can be available in several sizes, each equipped with an actuator adapted to the target opening size range. Each model thus allows installation on openings of different dimensions. For example, one model includes an actuator configured for openings from 500 mm to 1200 mm, while a second model can be equipped with an actuator adapted for openings from 800 mm to 1600 mm.

[0037] In addition, the device is equipped with a trigger (which can be activated by one of the gripping elements) designed to deploy the actuator. Upon activation, the two parts of the frame move apart, coming to rest against the respective ends of the door frame. This action allows the user to effortlessly spread their arms, positioning the device to block smoke from entering through the top of the door frame.

[0038] In one embodiment, the actuation can be controlled (via the trigger) by a rotating handle. For example, the left handle provides a good grip and ensures correct positioning of the device, while the right handle provides a secondary grip and controls the opening.

[0039] The gripping elements can be positioned to maximize ease of use. They can be configured to provide a secure and comfortable grip, essential during emergency interventions where speed and safety are paramount. Furthermore, these gripping elements can be angled relative to the lateral ends of the adjustable frame. This angle is designed to align the handles with the user's natural hand grip angle, thus reducing wrist strain during operation. This ergonomic orientation of the gripping elements not only improves comfort but also device control during installation and removal, thereby increasing operational efficiency and overall intervention safety.The angled design also ensures that the device can be handled efficiently even in confined spaces or in situations where rapid maneuvering is required.

[0040] The device's gripping elements may include visual indicators to easily distinguish the fixed part from the moving part. These markings facilitate the correct and rapid use of the device by helping users immediately identify the components to manipulate for adjustment or deployment. This feature is particularly useful in emergency situations, where rapid identification and effective action are crucial.

[0041] The safety device may also include a partition curtain. This partition curtain can be flexible (e.g., foldable) so that the device is easily stored, transportable, and lightweight. Furthermore, the use of a flexible curtain integrated into the device is particularly advantageous because it allows passage of (for example) a fire hose while limiting air exchange, thus facilitating fire control operations without requiring the curtain to be opened (even partially). This functionality is obviously not possible with a standard door, which would require opening the door to its full height. By keeping the curtain mostly closed while still allowing the passage of essential equipment, the curtain helps maintain a barrier against uncontrolled air exchange, thereby reducing the risk of the fire worsening due to an excessive supply of oxygen.

[0042] In one embodiment, only the adjustable frame may be rigid so that the device takes up minimal space when folded. The partition curtain can be configured to be fire-resistant.

[0043] The partition curtain can be securely attached to one part of the adjustable frame (for example, the fixed section). The opposite end of the curtain can be left free, allowing the unattached section of the frame to move relative to the curtain when it is extended. This section slides along the width of the curtain until it reaches a mechanical stop or the opposite door frame, ensuring a full and secure extension. The fabric can also be at least partially or fully attached to the moving part of the device.

[0044] The width of the partition curtain can be configured to exceed the maximum width of the adjustable frame. This configuration ensures that no air exchange can occur, even when the frame is extended to its widest position. Furthermore, the curtain can be large enough to at least partially cover the structure of the adjustable frame, enhancing the partitioning effectiveness.

[0045] In one possible embodiment, the length of the partition curtain can be configured so that it does not touch the floor when the device is installed on the door (in other words, the length of the partition curtain can be less than the standard length of a door). This design allows, for example, fire hoses to pass underneath while effectively controlling airflow. By maintaining a limited opening at floor level, the device facilitates targeted control of airflow: hot air cannot escape from the top, thus limiting or preventing the entry of fresh air from below. This airflow management can help maintain optimal conditions for the safety and effectiveness of emergency response by limiting unwanted air movement that could exacerbate a fire.

[0046] In one embodiment, the flexible curtain is designed to offer a degree of flexibility, allowing people, including firefighters, to push the curtain through the opening. Once a person has passed through, the flexible curtain can be configured to automatically return to its initial position to at least partially close the opening. This feature aims to limit or prevent further air exchange through the opening, thereby helping to maintain optimal conditions during an intervention, particularly by limiting the spread of smoke and preserving the integrity of the secured area.

[0047] In one embodiment, the device may include thermal insulation configured to protect the device from the effects of heat. Although the curtain can withstand high temperatures, for example up to 300°C or even 600°C, this resistance may not be sufficient to protect the entire device from these extreme temperatures. Indeed, certain parts of the device, such as the actuator, the mechanism(s), the seals, the cylinder, or the piston, may degrade or be damaged when exposed to high temperatures. Thus, adding thermal insulation material can be beneficial to ensure the repeated and reliable use of the device at different locations. The thermal insulation can be arranged to protect all or part of the device from the effects of heat. The thermal insulation can be contained within the curtain, arranged on top of the curtain, or placed between the curtain and the mechanism and actuator assembly.In other words, the thermal insulation can be positioned at a distal end of the device, either before or after the curtain. The frame of reference is defined by a plane in which the actuator is located nearby and the heat source is located at a distance, such that the insulation lies between the actuator and the heat source. The thermal insulation can be arranged along all or part of the curtain's length, but at least at the height of the actuator and / or other mechanisms.

[0048] In one embodiment, the device may include a wear indicator. Indeed, to ensure optimal device efficiency, a wear indicator can be configured to alert the user when the device or certain components require maintenance or replacement. This indicator allows monitoring the overall condition of the device and anticipating necessary interventions, thus ensuring continuous and reliable operation. The wear indicator can be located on the frame, the actuator, or the curtain.

[0049] In one embodiment, the device further includes an adhesion mechanism configured to ensure firm contact and adhesion of the device against the opening. This may be an anti-slip strip (for example, independent but attached to the curtain), or the material used for the partition curtain may incorporate an anti-slip material, enhancing its ability to adhere firmly to the door jambs. In one embodiment, the adhesion mechanism may also serve as a wear indicator. For example, this mechanism may be configured to withstand a certain amount of heat, thus defining a threshold for the operation of the actuator. Therefore, if the adhesion mechanism is damaged, this would indicate that the actuator has likely been exposed to temperatures that could also have damaged it.

[0050] The safety device may also include a hook designed to hold the partition curtain in the open position when conditions permit. This feature can be useful, for example, when the fire is under control or when emergency responders decide to establish operational ventilation and / or when air exchange no longer poses an immediate risk. In this case, ventilating the space may be desirable and can be facilitated by keeping the curtain open. This also minimizes obstruction of the opening, thus promoting the safe passage of personnel and equipment. This curtain positioning option allows its use to be adapted to the specific requirements of the ongoing operation.

[0051] A release mechanism or control allows for easy removal of the device from the door frame after use. This release mechanism may include an indexing pin that extends from the stop or an eccentric that increases the extension force or acts as a retraction trigger. This mechanism releases the tension exerted by the actuator. Thus, the user can quickly and easily remove the device from the door frame once the task is complete. After removing the safety device, the user can easily prepare it for storage by applying pressure to the adjustable frame. This pressure can be applied using the user's own weight and by operating the handle to recompress the actuator. This process reduces the size of the frame, making it easier to store in the provided bag. Example of a completed project :

[0052] Fig.1Diagram a safety device (1) comprising an adjustable frame (2), a first part (3), and a second part (4). The second part (4) is configured to move (5) relative to the first part (3). For ease of understanding, the first part (3) can also be called the fixed part and the second part (4) can also be called the moving part.

[0053] The safety device (1) may further include an actuator (6) (for example, a cylinder) configured to move the second part linearly along an axis defined by the actuator (6). The actuator may include a body, a rod, and / or a piston. Preferably, the actuator includes a pressurized gas in the actuator body, and the piston moves the actuator rod relative to the actuator body by means of the pressurized gas when the actuator is actuated. The force exerted by the actuator may be between 10 and 50 newtons (N), with a preferred range between 20 and 40 N or between 25 and 35 N. One end of the actuator may be attached to the first part (3) of the safety device, and a second end of the actuator may be attached to the second part (4) of the safety device (1).The first end of the actuator can be located opposite the second end of the actuator along the axis defined by the actuator (6).

[0054] To provide a better visualization of the actuator, Fig. 1 shows the actuator outside the adjustable frame. However, the actuator (6) can be arranged inside the adjustable frame (2) for example inside the first part (3) or the second part (4).

[0055] The second part (4) can be configured to telescope at least partially inside the first part (3).

[0056] The safety device (1) may further include a first gripping device (7) arranged on the first part (3) of the safety device (1) or a second gripping device (8) arranged on the second part (4) of the safety device (1). This / these gripping device(s) is / are configured to be grasped by the user in order to firmly hold the safety device during installation in the wall opening or removal of the device from the wall opening.

[0057] The safety device (1) may further include an actuation mechanism (9) which may be arranged in the immediate vicinity of the first gripping device or the second prevention device. The actuation mechanism may be configured to actuate the actuator by the user. Its immediate proximity to the gripping device allows the user to actuate the mechanism while keeping their hands on the gripping device. The actuation mechanism may be mechanically linked to the actuator by means of a cable or rod.

[0058] THE figures 2a to 2d show how the security device can be used. Fig. 2ashows that the user is holding the safety device with both hands. In this example, the right hand holds the fixed part and the left hand holds the moving part (the reverse is also possible). The user places the fixed part against the top right (since the fixed part is on the right here) of the door frame ( Fig. 2b ). The user activates the actuation mechanism, generating sufficient force from the actuator to move the moving part towards the opposite upright. During this step ( Fig. 2c ), the user always keeps both hands on the gripping devices to maintain the safety device correctly in place. The left hand is not used to move the moving part but simply guides the movement to ensure correct positioning during deployment. When the moving part has reached the opposite upright ( Fig. 2d), the user can reposition their hands, the device is held securely on the upright by the pressure exerted by the actuator.

[0059] Now, referring to Fig. 3a and b , the safety device further includes a disengagement mechanism (10) configured to release the tension or pressure applied by the actuator when the user removes the safety device (1) from the wall opening.

[0060] Fig. 4This illustrates an embodiment of the device in wireframe or transparent view, allowing clear visualization of the components and structural configuration of the device. In this embodiment, the first gripping device (7) is arranged on the movable part (3) of the adjustable frame. This gripping device is, in particular, a rotating handle which, when the handle is rotated, actuates the actuator (6). In this embodiment, the connection between the rotating handle (actuating mechanism) and the actuator can be made by a cable (11).

[0061] Fig. 5 is an exploded view of an embodiment equivalent to that of Fig. 4 .

[0062] Now, referring to Fig. 6The safety device may also include a flexible curtain. The flexible curtain can be attached to the adjustable frame, for example, to the fixed or moving part. When the actuator is deployed, the curtain can be configured to allow the moving part to slide against an inner wall of the curtain to facilitate its movement. The curtain's dimensions may depend on the size of the adjustable frame. Preferably, the maximum width of the flexible curtain is greater than the maximum width of the adjustable frame, i.e., when the actuator is fully deployed. Principle and explanation of the carrying bag :

[0063] Firefighters cannot afford to waste time opening bags or using rotating rib systems like our competitors. An intuitive product is essential for rescue specialists. A foldable carrying case can improve the system's usability. Deployment without releasing the device stored inside the case allows for quick and intuitive operation. The carrying case can be configured for easy removal by the user. This feature enables immediate deployment of the safety device without the delays caused by traditional unpacking procedures. The case can include temporary fastening methods, such as hook-and-loop fasteners, which secure the contents while allowing for quick and easy removal.

[0064] The carrying bag can be configured with a strategically placed opening, providing direct access to one of the handles of the device stored inside (e.g., a safety device). This feature allows the user to firmly grasp the handle (of the safety device) through the opening without needing to fully or partially open the bag. In an emergency, the user can thus hold the safety device with one hand while simultaneously pulling the carrying bag open with the other, thanks to a strap located on the bag.

[0065] The carrying case may include a foldable cover that forms a cross shape when fully opened / unfolded and a block shape when closed in the transport position. The pull strap can be attached to one end (also called the flap) of the cross, allowing for quick and efficient unpacking. The flaps can be configured to open fully when the user pulls firmly on the strap, thus facilitating immediate access to the safety device and accelerating its deployment.

[0066] Hook-and-loop fasteners can be attached to the folding cover of the carrying bag, allowing the ends of the cross to be held securely in the closed position. These fasteners not only facilitate quick and easy opening of the bag but also contribute to the reusability of the cover. After using the safety device, the user can easily fold and secure it in the bag by repositioning and fastening the hook-and-loop fasteners. This feature ensures convenient and quick storage, while also preparing the device for its next use. Example of a completed project:

[0067] Now, referring to Fig. 7a and bThe carrying bag (100) may include a foldable cover (101) with flaps (104). These flaps may be configured to fold inwards to form a block when the cover is closed. Hook and loop fasteners (105) may be arranged on the foldable cover to hold the flap(s) in the folded position, at least temporarily.

[0068] In one embodiment, the folding cover may include an opening (102) arranged to allow access to the handle (gripping device (7)) of the safety device stored inside. The folding cover may further include a strap (103) that can be arranged on one of the flaps, for example, the one containing the opening (102). The strap is configured to allow the user to pull on it to facilitate opening the folding cover. The flaps and the strap can be arranged to allow an opening wide enough to easily remove the safety device stored inside by simply pulling on the strap (103).

[0069] The carrying bag may also include a shoulder strap configured to allow the user to carry the bag over one shoulder.

Claims

1. Safety device for an opening in a wall, comprising: • An adjustable frame equipped with an actuator, the adjustable frame comprising a fixed part and a movable part of the frame intended to move relative to the fixed part under the action of the actuator, • A first gripping device to allow a user to position the safety device in the desired location, and • A partition curtain intended to limit the air exchange between two spaces when the device is installed in the opening of an open door. In which the actuator is configured to convert a form of energy into mechanical motion so as to move the movable part relative to the fixed part.

2. Safety device according to claim 1 further comprising an actuator actuation mechanism arranged in the immediate vicinity of the first gripping device to enable the user to activate the actuator while maintaining a firm grip on the safety device.

3. Safety device according to claim 2, wherein the actuation mechanism comprises a lever, a push button or a mechanism configured to be activated by the rotation or displacement of the first gripping device.

4. Safety device according to claim 2, wherein the actuation mechanism is connected to the actuator by a connection system comprising a cable or rod.

5. Safety device according to any one of the preceding claims, comprising a second gripping device arranged on the moving part of the frame, configured to allow the user to grasp and guide the movement of the moving part in order to optimize the positioning of the device.

6. Safety device according to any one of the preceding claims, comprising a disengagement mechanism configured to release the tension or pressure applied by the actuator.

7. Safety device according to any one of the preceding claims, comprising a hook configured to hold the partition curtain in an open position.

8. Safety device according to any one of the preceding claims, comprising an adhesion mechanism configured to adhere to the walls of an opening.

9. Safety device according to any one of the preceding claims, comprising a wear indicator.

10. Safety device according to any one of the preceding claims, comprising a thermal insulator configured to protect all or part of the device from the effects of heat.

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