A system for protecting against respiratory hazards, the system comprising a hood configured to cover a head of a user and interface with a mask, when the mask is positioned on a face of the user; an air blower connected with the hood in order to provide air to an interior of the hood; at least one pressure sensor coupled to a controller, the at least one sensor for measuring air pressure at a selected location; and the controller to receive data from the at least one pressure sensor and configured to control the air blower to dynamically adjust the air pressure in the interior of the hood to a set pressure, such that the controller configures operation of the air blower by an operational mode selected from a plurality of operational modes, such that each of the operational modes are represented by a different set of operational parameters including the set pressure.

In some examples, a system includes an article of personal protective equipment (PPE) having at least one sensor configured to generate a stream of usage data; and an analytical stream processing component comprising: a communication component that receives the stream of usage data; a memory configured to store at least a portion of the stream of usage data and at least one model for detecting a safety event signature, wherein the at least one model is trained based as least in part on a set of usage data generated by one or more other articles of PPE of a same type as the article of PPE; and one or more computer processors configured to: detect the safety event signature in the stream of usage data based on processing the stream of usage data with the model, and generate an output in response to detecting the safety event signature.

In some examples, a system includes an article of personal protective equipment (PPE) having at least one sensor configured to generate a stream of usage data; and an analytical stream processing component comprising: a communication component that receives the stream of usage data; a memory configured to store at least a portion of the stream of usage data and at least one model for detecting a safety event signature, wherein the at least one model is trained based as least in part on a set of usage data generated by one or more other articles of PPE of a same type as the article of PPE; and one or more computer processors configured to: detect the safety event signature in the stream of usage data based on processing the stream of usage data with the model, and generate an output in response to detecting the safety event signature.

A breathing bag (1) for a closed-circuit respirator (100) has a bag component (2), which encloses an inner volume (3). The bag component (2) can reversibly assume at least one unfolded state (4) and a folded-in state (5). The bag component (2) encloses a larger inner volume (3) in the unfolded state (4) than in the folded-in state (5). Moreover, a closed-circuit respirator (100) is provided, having at least one counter-lung, a filter device, an oxygen source as well as a housing. The counter-lung, the filter device and the oxygen source are arranged in the housing.

A breathing bag (1) for a closed-circuit respirator (100) has a bag component (2), which encloses an inner volume (3). The bag component (2) can reversibly assume at least one unfolded state (4) and a folded-in state (5). The bag component (2) encloses a larger inner volume (3) in the unfolded state (4) than in the folded-in state (5). Moreover, a closed-circuit respirator (100) is provided, having at least one counter-lung, a filter device, an oxygen source as well as a housing. The counter-lung, the filter device and the oxygen source are arranged in the housing.

In some examples, a system includes: an article of personal protective equipment (PPE) that includes a communication component; a computing device communicatively coupled to the article of PPE, wherein the computing device: receives context data that is based on one or more of the article of PPE, a work environment for the article of PPE, or a worker assigned to the article of PPE; selects, based at least in part on the context data, a set of programmable safety rules that are contextually associated with the at least one article of PPE; sends the programmable safety rules to one or more of the article of PPE or a data hub communicatively coupled to the article of PPE; and wherein the programmable safety rules are configured at the article of PPE or the data hub to perform one or more operations based at least in part on PPE data.

A housing (1) accommodates various electrical, electronic, electromechanical and/or electropneumatic components (13) in a housing interior (2). A blower filter unit (19) is provided with such a housing (1). The housing (1) has at least one housing through-opening (4), arranged between the housing interior (2) and a housing environment (3), for receiving at least one functional unit (6) which, in a state received in the housing through-opening (4) is connectable to at least one of the components (13) arranged in the housing interior (2) for transmitting data, signals and/or power. The functional unit (6) is provided as an adapter module (9), which has a connector (10) that can be non-destructively detachably connected to a contact element (5) arranged in the housing through-opening (4), establishing a connection for transmitting the data, signals and/or power.

A gas irradiation system has an irradiation chamber having a plurality of compartments disposed circumferentially about a central axis. One of the compartments is an inlet compartment. The inlet compartment has an aperture at the bottom through which gas flows from the compartment. The irradiation chamber comprises a plurality of UV lights which are configured to irradiate the gas and neutralize pathogens as the gas flows through the irradiation chamber. Circumferentially adjacent to one side of the inlet compartment is an outlet compartment. Circumferentially adjacent in the opposite circumferential direction on the other side of the inlet compartment is the first of a plurality of intermediate compartments. These intermediate compartments extend circumferentially about the central axis between the inlet compartment and the outlet compartment.

A gas irradiation system has an irradiation chamber having a plurality of compartments disposed circumferentially about a central axis. One of the compartments is an inlet compartment. The inlet compartment has an aperture at the bottom through which gas flows from the compartment. The irradiation chamber comprises a plurality of UV lights which are configured to irradiate the gas and neutralize pathogens as the gas flows through the irradiation chamber. Circumferentially adjacent to one side of the inlet compartment is an outlet compartment. Circumferentially adjacent in the opposite circumferential direction on the other side of the inlet compartment is the first of a plurality of intermediate compartments. These intermediate compartments extend circumferentially about the central axis between the inlet compartment and the outlet compartment.

A face shield assembly with positive pressure airflow comprises a head band, a transparent face shield, a foam spacer, and at least one airflow supply unit providing a positive pressure airflow. The head band attaches the face shield outward and the foam spacer inward. The airflow supply unit has hose(s) to connect the holes distributed in the foam spacer, consequently bring forth airflow on the front of the user's face to prevent the droplets and particles from being inhaled into the user's nose and mouth.