44results about "Respiratory device testing" patented technology

Disclosed are methods and a safety system of a structure for an air / environmental parameter based automatic closing of a valve to isolate breathable air supplied to a level of the structure having the breathable air supplied thereto from a source. In accordance therewith, a parameter of an environment of the level of the structure and / or the breathable air supplied thereto is sensed using a sensor associated with one or more component(s) of the safety system. In response to the sensing, the one or more component(s) automatically closes the valve associated with control of the supply of the breathable air to the level to isolate the breathable air supplied to the level.

A test fixture facilitates non-destructive testing of a protective mask. The test fixture includes a mock facial structure, a clamping form that makes a seal around at least part of the facial structure, and can employ the retaining straps of the protective mask to a make a seal around at least part of the facial structure. In use, the protective mask is tested in situ on the facial structure. In some examples, the clamping form has a negative contour of the mock facial structure or of the outer surface of a protective mask that is to be tested. The testing can include repetitive testing of the fit, structural components (e.g., ultrasonic welds and straps), and the degradation of materials as a function of donning / doffing or environmental factors (e.g., temperature and humidity).

Improved respirator fit test devices including piezoelectric pumps that reduce noise and vibration of the device. The devices may include two or more piezoelectric pumps, wherein a first pump moves sheath air through a differential mobility analyzer and a second pump alternately moves aerosol from inside or outside a respirator through the differential mobility analyzer. A size selected portion of each aerosol sample is then moved through a condensation nuclei counter. Control circuitry enables user selection of a respirator type to be tested, wherein the differential mobility analyzer may be enabled or disabled based on the user selection. The control circuitry further enables calculation of a fit factor corresponding to a quantitative effectiveness of the respirator fitting a user based on signals from the condensation nuclei counter for each aerosol sample.

A device for assessing particulate matter (PM) exposure in a respirator is provided. The device includes a first PM sensor, a second PM sensor, and a processor communicatively coupled to the first PM sensor and to the second PM sensor. The first PM sensor is configured to measure a PM concentration level inside of the respirator. The second PM sensor configured to measure a PM concentration level outside of the respirator. The processor is configured to determine a ratio of the PM concentration level outside the respirator and the PM concentration level inside of the respirator. The processor is further configured to determine a particulate exposure risk within the respirator based on whether the ratio satisfies at least one predetermined threshold value. The processor is further configured to provide a message indicative of the particulate exposure risk.

The invention relates to a respiratory protection method comprising the steps of1) providing a mask comprising:a transparent mask body (1) having a periphery comprising an upper portion (36), a right lateral portion (2), a left lateral portion (3), and a lower portion (4) ;a membrane (8) located on the periphery of the transparent mask body (1) ;a right retaining means (9) and a left retaining means (10) ; and2) placing the mask on the face of a user, by positioning the membrane (8), at the lower portion (4) of the periphery of the mask body (1), in contact solely with the underside of the user's jaw.The invention also relates to a respiratory protection mask suitable for implementing the aforementioned method.

An apparatus (100) for testing respiratory protective equipment (200) for leaks to the outside of the same comprises a cabin (110), generators (140, 150) for supplying NaCl aerosol and air to the cabin (110), a measuring equipment (160) for determining leaks in the respiratory protective equipment (200) to the outside of the same based on a concentration of NaCl aerosol flowing out of the cabin (110) with respect to a reference concentration of NaCl aerosol, and an air extractor (170) for extracting air from the cabin (120) to the measuring equipment (160). The cabin (110) has access area (130) for placing a Sheffield torso (220) in the cabin interior (120) on which the respiratory protective equipment (200) to be tested is fitted.

An exemplary apparatus and method are disclosed for a respiratory protective device. The respiratory protective device can be customized to the facial profile of a user and ensure proper fit and operation of device and attached breathable filter. In some embodiments, the device is configured to continuously monitor, via an integrated sensor embedded in the device's frame, the fit or proper particulate-filtering operation of the respiratory protective device. The sensor embodiment can ensure proper operation of respiratory protective device while providing monitoring and tracking of the fit to ensure personal safety for the healthcare professionals wearing the device.

A respirator filter adapter, comprising: a main body having a rear-facing side configured to be connectable to an air inlet of a respirator, and a front-facing side configured to be connectable to an outlet of a filter, and an opening extending through the main body from the front-facing side to the rear- facing side; a lid arranged over the opening on the front-facing side of the main body, wherein the lid is movable between an open position in which the lid is spaced apart from the opening to permit air to flow through the opening, and a close position in which the lid covers the opening to prevent air from flowing through the opening; and a spring element arranged under the lid, wherein the spring element biases the lid towards the open position by default when no external force is applied on the lid, and the spring element is responsive to an external force selectively applied on the lid by permitting the lid to be temporarily actuated to the close position.

An arrangement comprising a breathing air source 30, a respiratory mask 2, and an intermediate piece 100. A device-side coupling point 22 of the intermediate piece can be connected to a coupling point

A wearable respirator fit assessment system for real-time fit testing and continuous monitoring of respirators. The system includes a wearable device that attaches to the respirator and incorporates multimodal sensors, including pressure and temperature sensors, for detecting variations in the respirator's dead space. An embedded microcontroller processes the sensor data using a machine learning model running on the device to classify respirator fit without needing any other hardware. The system provides immediate feedback to users through visual, auditory, and haptic notifications and can communicate fit data to a connected user device via Bluetooth or other wireless protocols. A companion mobile application guides users through fit testing exercises, displays real-time results, and provides educational resources for proper respirator use and maintenance. The system also supports continuous fit monitoring during respirator use, enabling users to receive alerts for seal degradation or improper fit.

To provide a protective mask to which a tube for measuring fit testing can be connected without using an adapter or a simulated surface body.SOLUTION: The protective mask 10 includes a face body 11 to be worn on the face in an airtight state, an opening 15 for connecting a measuring tube 2 extending from an external device 1 for measuring the airtight state of the face body 11, and a plug 20 for closing the opening 15 in an openable / closable manner.SELECTED DRAWING: Figure 2

Method (100) for checking the operational readiness of a closed-circuit breathing apparatus (1) in a step sequence for carrying out the check with the steps: - Continuous metrological acquisition (104, 104') and recording of pressure measurement signals P L a low-pressure sensor (41) arranged in or on a low-pressure system (77) of the closed-circuit breathing apparatus (1), - Identification based on the pressure measurement signal P L (81) of the low-pressure sensor (41) whether there is currently a situation in which an inflow of quantities of gas into the low-pressure system (77) has begun, - Storage of a first pressure measurement signal P1 (109) at a first time t1 (108), which indicates the identified pressure situation immediately after the start of the inflow of gas quantities into the low-pressure system (77) with a breathing bag (3), - Storage of a second pressure measurement signal P2 (114), which indicates a pressure situation at the end of the inflow of gas quantities into the low-pressure system (77) at a second time t2 (113), - Formation (115) of a difference value ΔP (ΔP = P2 - P1) (116) between the first pressure signal P, (109) and the second pressure signal P2 (114), - Performing a comparison (117) between the difference value ΔP (116) with a difference threshold value P C (118) - Determining a result (94, 95) of the verification of the functionality of the closed-circuit breathing apparatus based on the comparison (117), - Provision of an output signal (88) which indicates the result (94, 95) of the check.

Training system (1) for users (21) of a respiratory protective device (5) comprising a control unit (3) and at least one training device (2a, 2b, 2c) for the physical exertion of the user (21), wherein the control unit (3) includes a communication module (4) configured to receive a breathing air consumption value (A) detectable by a respiratory protective device (5) and a stress value (B1, B2, B3) detectable by the at least one training device (2a, 2b, 2c), wherein the stress value (B1, B2, B3) includes information about work performed by the user (21) on the at least one training device (2a, 2b, 2c), and wherein the control unit (3) is configured to determine a training status based on the breathing air consumption value (A) and the stress value (B1, B2, B3) and to generate an output signal (S) which The invention includes information about the training status. Furthermore, the invention relates to a training system 20, a method, and a computer program product.

An apparatus (100) for testing respiratory protective equipment (200) for leaks to the outside of the same comprises a cabin (110), generators (140, 150) for supplying NaCI aerosol and air to the cabin (110), a measuring equipment (160) for determining leaks in the respiratory protective equipment (200) to the outside of the same based on a concentration of NaCI aerosol flowing out of the cabin (110) with respect to a reference concentration of NaCI aerosol, and an air extractor (170) for extracting air from the cabin (120) to the measuring equipment (160). The cabin (110) has access area (130) for placing a Sheffield torso (220) in the cabin interior (120) on which the respiratory protective equipment (200) to be tested is fitted.

A fit detection system for a respiratory protection device is presented that includes an infrared camera that captures an image sequence of a user wearing the respiratory protection device. The system also includes a temperature change detector that analyzes images in the image sequence and detects a temperature change profile of the respiratory protection device. The system also includes a communication component that communicates a fit indication based on the detected temperature change profile.

A fit detection system for a respiratory protection device is presented that includes an infrared camera that captures an image sequence of a user wearing the respiratory protection device. The system also includes a temperature change detector that analyzes images in the image sequence and detects a temperature change profile of the respiratory protection device. The system also includes a communication component that communicates a fit indication based on the detected temperature change profile.

A system includes an air storage tank, a selector valve, a pressure regulator, and a plurality of air fill stations. The air storage tank has air at an operational pressure of at least 3000 psig. The selector valve has a first flow path coupled with the air storage tank. The pressure regulator is coupled with a second flow path of the selector valve, and is to maintain pressure of air provided to the second flow path at a standby pressure less than 250 psig. The plurality of air fill stations are coupled with the selector valve.

The invention relates to the technical field of nuclear biochemical protection detection, in particular to a device for detecting the drinking water flow of a gas mask, which comprises a workbench, and the gas circuit area of the workbench is sequentially connected with an air compressor, a primary regulating valve, a secondary regulating valve, an electromagnetic valve I and a digital pressure sensor; a liquid path area of the workbench comprises a water storage device, an electromagnetic valve II and a capacity detector; a gas mask to be detected is arranged between the electromagnetic valve II and the capacity detector; the measurement and control system of the workbench comprises a data acquisition system, an automatic timer and a PLC (Programmable Logic Controller); the PLC is also electrically connected with the electromagnetic valve I and the electromagnetic valve II; and the digital pressure sensor, the automatic timer and the capacity detector are electrically connected with the PLC. The design is reasonable, the design of a high-precision pressure control system, a drinking water system, an automatic timing system and a drinking water flow detection system is adopted, the integration of an intelligent detection technology and a high-precision device is realized, and the practical application value is good.

The utility model discloses a compact air breathing tester relates to emergency rescue equipment technical field, can fast and convenient on -the -spot detection air breathing apparatus. The utility model discloses: box, test platform and head mould are placed in the storage space in the box, and the front of test platform is provided with test platform operation interface, and the side of test platform is provided with head mould inflation deflation interface, and head mould connecting wire is used for connecting the inflation deflation mouth of head mould and head mould inflation deflation interface, and head mould is used for installing the face guard of waiting to test, and face guard connecting wire is used for connecting the face guard of waiting to test and gas supply valve connecting joint. The compact air breathing tester, compact structure and strong portability provide the detection tool of being used as on -the -spot detection air breathing apparatus for first -line personnel, and the air tightness of the face guard on the detection head mould can discover potential problems such as face guard slight air leakage, gas supply valve pressure anomaly etc. in time.

A lung simulator (1) having a housing (G) containing electronics (X), a connecting unit (0) and an internal pipe and / or hose system from an inlet (E), through a first actuator, until routed out through an inhaled / exhaled air outlet (A), is intended to permit a plurality of simulation scenarios for a more compact and more lightweight design. This is achieved by virtue of the first actuator being a radial fan (R) having a fan housing (RI) that contains a rotor (R2) having multiple rotor blades, with the result that the fan motor (R5) can be used to pump air drawn in through an axial aspiration nozzle (R4) through a radially projecting radial outlet (R3), and being arranged, together with multiple pressure measuring sensors and / or flow measuring devices, in the course of the pipe and / or hose system between the inlet (E) and the inhaled / exhaled air outlet (A), wherein the radial fan (R) and multiple pressure measuring sensors and / or flow measuring devices are electrically connected to the electronics (X) and are able to be controlled by said electronics and used for different lung simulations.

AIRTime is a system designed to detect clogged particle filters in a full face respirator. AIRTime is installed inside a full face respirator and operates on the principle of constantly measuring differential air pressure so that it can determine if a particle filter is clogged, generating a light signal that provides a warning when the regulatory limit of the filters has been reached.

Respirators for protecting against airborne particles are provided. An example respirator includes a face gasket for providing a seal around the mouth and nose of a user, a frame attached to the gasket, a filter compression ring removably attached to the frame and a filter for filtering airborne particles from air. The filter is positioned between the frame and the filter compression ring. An eye protection accessory attachable to the gasket can be provided. The respirator additionally includes a safety module that includes an air pressure sensor that can monitor the air pressure in the space bounded by the user's face and the filter, a processor for analyzing the air pressure measurements obtained by the air pressure sensor and a vibration motor or a visual indicator. The processor can trigger the vibration motor and the visual indicator when the air pressure exceeds a predetermined threshold.

An exemplary system and method for a retrofittable respiratory protective device system configured to be retrofitted into a respiratory protective device for continuously monitoring the fit or proper particulate-filtering operation of the respiratory protective device. The system can ensure proper operation of the respiratory protective device while providing quantification of the fit and proper setup of the RPD as well as the on-going monitoring and tracking of the fit to ensure personal safety for users wearing the device.

The utility model belongs to the technical field of air respirator mask inspection, and particularly relates to a breathing resistance test head mold mounting seat, which comprises a base consisting of a bottom plate and a plurality of guide plates, the plurality of guide plates are vertically arranged on the bottom plate in pairs, and a cross-shaped communication area is formed among the plurality of guide plates. Arc-shaped guide grooves are formed in the inner sides of the two guide plates in the same group; a fixing base used for fixing the head mold is arranged on the base and comprises a swing supporting block and a mounting plate on the swing supporting block, the head mold is fixed to the mounting plate, the swing supporting block is located between the guide plates, and an arc-shaped sliding block matched with the guide groove is arranged on the side face of the swing supporting block. The swing supporting block can swing front, back, left and right in the cross-shaped communication area along the arc-shaped guide groove. According to the utility model, the head die can rapidly swing in the front, back, left and right directions, so that various postures such as standing, forward falling, backward leaning, left and right side lying and the like can be easily switched, and the test efficiency is greatly improved.

An exemplary system and method are disclosed for a respiratory protective device configured to continuously monitor, via an integrated sensor network embedded in the device's frame, the fit or proper particulate-filtering operation of the respiratory protective device. The system can ensure proper operation of respiratory protective device while providing monitoring and tracking of the fit to ensure personal safety for users wearing the device. In some embodiments, the system can monitor, track, and aggregate the data to present via a user interface to the user.

Disclosed are methods and / or a system of incident based camera device activation in a safety system of a structure having a fixed piping system implemented therein to supply breathable air thereacross. In accordance therewith, one or more sensor(s) associated with one or more component(s) of the safety system is integrated with a computing platform executing on a data processing device. Based on the integration of the one or more sensor(s) with the computing platform, one or more environmental parameter(s) of the one or more component(s) of the safety system is sensed. One or more camera device(s) in a vicinity of and / or on the one or more component(s) of the safety system is automatically activated based on determining, from the sensing, occurrence of an incident.

A system for a PPE device is disclosed that includes an infrared camera that captures an image sequence of a user wearing the PPE device. The system also includes a gas profile generator that analyzes the image sequence and generates a gas profile of the PPE device. The system also includes an analyzer that determines a status of the PPE device based on the gas profile. The system also includes a communication component that communicates the status.

The utility model belongs to the technical field of air respirator mask inspection, and particularly relates to an air respirator respiratory resistance testing head mold fixing seat which comprises a base, a pair of lower supporting plates are arranged on the base, the top ends of the lower supporting plates are connected with a pair of upper supporting plates through a cross-shaped connecting seat, and the cross-shaped connecting seat is in damping rotating connection with the upper supporting plates and the lower supporting plates. A universal joint structure is formed; the top end of the upper support plate is connected with the mounting plate, and the head mold is fixed on the mounting plate and can swing forwards, backwards, leftwards and rightwards, so that the breathing resistance test in upright, forward-falling, backward-leaning and left-right side-lying directions is realized. According to the utility model, the universal joint structure rotating in a damping manner is adopted, so that the test head mold can easily realize multi-direction swinging in front, back, left and right directions, and various test postures such as standing, forward falling, backward leaning, left and right lying on the side and the like can be quickly switched. The test process is greatly simplified, and the test efficiency is improved. Meanwhile, due to standardization and stability of the posture of the head mold, the test accuracy is further improved.

There is provided a respiratory protection device comprising a mask body defining a breathable air zone for a wearer and having a front cover; an exhale valve in fluid communication with the breathable air zone; and a seal check mechanism disposed in the front cover, where the seal check mechanism comprises a button associated with a flap such that, when actuated, the flap biases the exhale valve in a closed position. There is provided in some embodiments a plane of the button intersecting with a plane of the exhale valve. There is also provided in some embodiments the button and the plunger being a monolithic part.