An air purification apparatus for nasal application is provided for purifying and/or reducing undesirable materials from air intended to enter a nasal cavity. The air purification apparatus for nasal application may include an air purification apparatus, housing component, power component, fan component, filtration component, germicidal irradiation component, aroma component, nose plug component, monitoring component, and case.

A nasal-plug filter device including a device body, a filter, a first actuator, a second actuator, and a gas sensor is provided. The device body has a ventilating channel, and the ventilating channel has an inlet end and an outlet end. The filter is disposed at the outlet end. The first actuator is disposed at the inlet end for being driven to transmit gas outside the device body into the device body. The second actuator is stacked on and bonded to the first actuator, and the second actuator is driven to transmit the gas transmitted by the first actuator to the filter to be filtered and purified. The gas sensor is disposed at the outlet end. A connection element may be provided for connecting two nasal-plug filter devices with each other.

A powered air-purifying respirator has a blower unit with an inlet and an outlet. The blower unit draws air through the inlet and out of the outlet. A filter assembly is removably connected on the outlet end of the blower unit. The filter assembly has a first end and a second end. The first end is removably connected to the outlet of the blower unit, and the second end of the filter assembly is adapted and configured to be coupled to a breathing hose.

Apparatuses, components, methods, and techniques for altering equipment operation are provided. An example tool control and breathable air delivery system includes equipment including a tool and a controller configured to control the tool. The example system also includes a wearable respirator and an air delivery device connected to the wearable respirator. The example system further includes an air evaluation monitor configured to generate a signal based upon a condition of air being delivered to the wearable respirator. An example electronic circuit is configured to adjust the tool based at least in part on the signal generated by the air evaluation monitor. An example method includes enabling the tool, providing air to a respirator, determining a condition of the air, and adjusting the tool based on the condition of the air.

A nasal-plug filter device including a device body, a filter, a first actuator, a second actuator, and a gas sensor is provided. The device body has a ventilating channel, and the ventilating channel has an inlet end and an outlet end. The filter is disposed at the outlet end. The first actuator is disposed at the inlet end for being driven to transmit gas outside the device body into the device body. The second actuator is stacked on and bonded to the first actuator, and the second actuator is driven to transmit the gas transmitted by the first actuator to the filter to be filtered and purified. The gas sensor is disposed at the outlet end for detecting a gas quality of the gas at the outlet end. A connection element may be provided for connecting two nasal-plug filter devices with each other.

A face mask includes a fabric filter configured to be worn on a user's face. A composition with anti-viral properties is arranged on the fabric. The composition preferably includes anti-viral oils and an anti-viral metal such as copper or copper oxide.

There is provided a smart face protective device, preferably as part of a helmet or another head held device, to be used by a user for preventing or reducing spread of infectious droplets through a portal portion of the user's face, where the face protective device is configured to be automatically adjusted while being in use between a secured position and an unsecured position based on an electric signal associated to a monitored health and safety condition of the user. There is also provided a system, a network and a method for allocating smart face protective devices to members of a community and managing these devices and data collected thereby for preventing or reducing risks of virus contamination and spread, namely COVID-19, between the members of the community.

A combined exhaled air and environmental gas sensor apparatus for mobile respiratory equipment includes a housing, wherein the housing includes a port aperture, a connector configured to attach the port aperture to a respiratory exhaust port, and at least an ambient aperture connecting to an exterior environment, a sensor positioned within the housing, the sensor configured to detect a carbon dioxide level and generate sensor outputs indicating detected carbon dioxide level, a processor communicatively connected to the sensor, the processor including a memory, a breath analysis mode and an environmental analysis mode, wherein the processor is configured to receive a plurality of sensor outputs from the sensor, match the plurality of sensor outputs to mode parameter profile, and switch between the breath analysis mode and the environmental analysis mode as a function of the mode parameter profile.

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.

A monitoring system may include a server, and mask devices in communication with the server. Each mask device may include a mask body to be worn by a respective user, an air quality sensor carried by the mask body and configured to detect a contaminant concentration value in air breathed through the mask body, a wireless transceiver carried by the mask body and in communication with the server via a wireless link, and a processor carried by the mask body and coupled to the air quality sensor and the wireless transceiver. The processor may be configured to send an alert message to the server when the contaminant concentration value respectively exceeds a threshold.