A personal respiratory isolation assembly includes a manifold-filter assembly configured to be attached to a suction port of a respiratory pump. The manifold-filter assembly has a bowl-shaped manifold housing with an inlet adapter configured for connecting a hose, and a filter releasably attachable to the manifold housing. The isolation assembly further comprises an exhaust baffle with a plurality of openings. The exhaust baffle fits a pressure port of the respiratory pump. A method of operating a personal respiratory isolation assembly involves attaching an exhaust baffle to an outlet adapter of a respiratory pump; connecting a manifold housing to a suction port of the respiratory pump with a filter disposed between the manifold housing and the suction port; connecting a hose to an inlet adapter of the manifold housing; attaching the hose to a hose port of a hood; and starting to operate the respiratory pump.

A full-cover type portable air purifier includes a breathing mask provided with a first air inlet, an air cleaning device having a fan mounted in a housing thereof to drive outside air from the first air inlet into the breathing mask, an air filter set in the breathing mask, and a wearing device designed to be worn on the user's head or ears so that the breathing mask can cover the user's mouth and nose. In this way, it can filter dust, bacteria and viruses and facilitate wearing during activities.

An air treatment system includes a cyclone filter and an electrostatic filtration system. The cyclone filter may include a cyclone chamber, a cyclone chamber inlet configured to receive air including suspended particulates, and a cyclone chamber outlet configured to output treated air toward a respiratory interface, e.g., a mask or face shield. The cyclone filter produces a rotational airflow that removes at least some particulates from the air in the cyclone filter. The electrostatic filtration system is configured to charge the particulates in the cyclone chamber with a first polarity to produce an electrostatic attraction of the particulates to a particulate removal system charged with an opposite second polarity, to remove additional particulates from the cyclone filter. The air treatment system may also include an ultraviolet purification system to deliver ultraviolet radiation (e.g., UVC radiation) to kill, destroy or otherwise affect organic particulates in the air being treated.

There is provided an ear cup including a housing containing a filter assembly and a motor-driven impeller for creating an airflow through the filter assembly, the housing including an air outlet downstream from the filter assembly for emitting the filtered airflow from the housing. The ear cup further includes an acoustic driver carried by the housing, a reference internal noise sensor carried by the housing, and active noise control circuitry that is configured to use a signal provided by the reference internal noise sensor to operate the acoustic driver.

There is provided an ear cup including a housing containing a filter assembly and a motor-driven impeller for creating an airflow through the filter assembly, the housing including an air outlet downstream from the filter assembly for emitting the filtered airflow from the housing. The ear cup further includes an acoustic driver carried by or mounted to, either directly or indirectly, the housing, a reference internal noise sensor disposed within the housing, and a reference ambient noise sensor carried by or mounted to, either directly or indirectly, the housing. The ear cup further includes active noise control circuitry that is configured, in a first operating state, to use a signal provided by the reference internal noise sensor to operate the acoustic driver and, in a second operating state, to use a signal provided by the reference ambient noise sensor to operate the acoustic driver.

There is provided an ear cup including a housing containing a filter assembly and a motor-driven impeller for creating an airflow through the filter assembly, the housing including an air outlet downstream from the filter assembly for emitting the filtered airflow from the housing. The ear cup further includes an acoustic driver mounted to the housing, a reference internal noise disposed within the housing and a reference ambient noise mounted to the housing. The ear cup further includes active noise control circuitry that is configured to simultaneously use both a signal provided by the reference internal noise and the signal provided by the reference ambient noise to operate the acoustic driver.

A smart mask includes a face covering, an attachment member, one or more power source(s), an air circulation subsystem, an exhaust subsystem, and a controller. The face covering is configured to cover a face area of a wearer. The attachment member is configured to attach the face covering onto the face area of the wearer. The air circulation subsystem is powered by at least one of the one or more power source(s) and configured to filter outside air and draw the filtered outside air into the face area. The exhaust subsystem is placed below the air circulation subsystem and configured to purge exhaled air out of the face area. The controller is configured to control the air circulation subsystem.

The present invention is a portable personalized air purifier intended to be attached to the belt or to the neck of a user. Purified air is generated by filtering, electrochemically, and UV LED treating of a polluted air. Polluted air is forced through a filtering into an ionized water, which absorbs particles and kills possible air born bacteria. The UV LED disinfects the polluted air. The device further balances the humidity of the air and delivers a healthy air towards the face of the user through a mask.

An exhaust apparatus for connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation, the apparatus comprising a blower in fluid connection with the at least one exhalation valve, the blower being responsive to the wearer's respiratory cycle to draw a substantial portion of the wearer's exhaled breath through the at least one exhalation valve wherein, in response to the wearer's respiratory cycle, the blower operates throughout the wearer's exhale breath, or a substantial period thereof, and does not operate throughout the wearer's inhale breath, or a substantial period thereof

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.