An air purification and disinfection system includes an apparatus having a housing, an ultraviolet disinfection chamber, an air mover, and an air distribution unit in communication with the disinfection chamber. Air is passed through the disinfection chamber where it is purified and disinfected before it is delivered to the user of the apparatus through the air distribution unit. The apparatus can be configured as an open or a closed circuit system. The system may be configured to purify air in an airplane, a conference room, a classroom, or as a portable unit for an individual user. As a portable unit the disinfection chamber can be incorporated into a back pack, a vest, a purse, a briefcase, a shoulder bag, a cervical collar, or any other format for being carried by the user.

An air purification and disinfection system includes an apparatus having a housing, an ultraviolet disinfection chamber, an air mover, and an air distribution unit in communication with the disinfection chamber. Air is passed through the disinfection chamber where it is purified and disinfected before it is delivered to the user of the apparatus through the air distribution unit. The apparatus can be configured as an open or a closed circuit system. The system may be configured to purify air in an airplane, a conference room, a classroom, or as a portable unit for an individual user. As a portable unit the disinfection chamber can be incorporated into a back pack, a vest, a purse, a briefcase, a shoulder bag, a cervical collar, or any other format for being carried by the user.

A personal air filter device with an air filter assembly retained in the air filter holding member is disclosed. An ear support member is attached to the air filter holding member and can be hung over the ear of the user to support the air filter holding member. Alternatively, a clip member attached to the air filter holding member can be utilized to attach the device to the user's clothing or accessories. An air tube assembly extends from the air filter holding member to the mouthpiece for the purpose of breathing filtered air flowing through the air filter assembly. An air intake check valve situated near the end of the air tube attached to a mouthpiece retaining member and an air outflow check valve situated near the outer surface of the mouthpiece retaining member to ensure exhaled air is directed out of the device and is not reinhaled.

Disclosed is an apparatus for providing controlled flow of inhalation-air from at least an air-reservoir to a mask. The apparatus includes a control unit and a switch unit. The control unit controls the level of the inhalation-air flowing from the air-reservoir to the mask. The control unit includes a housing to receive the inhalation-air from the air-reservoir, plurality of ducts protruding from the housing to connect with the air-reservoir and with the mask and a valve configured to control the flow of inhalation-air from the plurality of ducts. The switch unit positions a valve to selectively open and close the plurality of ducts for regulating the flow of inhalation-air from the air-reservoir to the housing.

Apparatuses and methods reducing humidity in respiratory protective devices are provided. For example, an example respiratory protective device includes a humidity sensor component embedded in an exhalation filtration component of the respiratory protective device, at least one fan component positioned adjacent to an inhalation filtration component of the respiratory protective device, and a controller component in electronic communication with the humidity sensor component and the at least one fan component.

Apparatuses and methods for optimizing air flow in respiratory protective devices are provided. For example, an example respiratory protective device may include a pressure sensor component, at least one fan component, and a controller component. In some example, the controller component is configured to receive a plurality of air pressure indications from the pressure sensor component, calculate a breath pattern indication based on the plurality of air pressure indications, determine a forward rotation speed value for the at least one fan component, and determine a forward rotation start signal transmission time point and a forward rotation stop signal transmission time point for the at least one fan component.

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 cooling element for use within a cooling device of a closed-circuit respirator, includes an element housing, which has a liquid-tight cap and is filled with a coolant, which has a melting point below 50° C., especially below 45° C., preferably below 40° C. A sensor element is arranged in contact with the coolant within the element housing such that the sensor element can be moved in a direction of the gravity acting on the sensor element in the liquid state of the coolant during the use of the closed-circuit respirator by a user of the closed-circuit respirator.

A mask for a patient and a method for reducing exposure of aerosol particles emitted from the patient to other individuals. The mask may have an inner chamber configured to enclose a nose and a mouth of the patient. The mask may further have a negative pressure chamber fluidly connected to the inner chamber. The negative pressure chamber may have an outer opening and a suction opening. The outer opening may be covered by a seal. The seal may be configured to be cut or opened to form a device opening providing access to the nose of the patient. The device opening may receive a medical device and form a seal around the medical device. The suction opening may be configured to couple to a suction device for removing the aerosol particles located within the inner chamber and the negative pressure chamber.

A half mask for the face, including one or more covering areas for covering one or both respiratory openings of the person wearing the half mask and one or more fastening areas for fastening the half mask to its wearer, particularly to one or more of their head, neck, and throat, one or more UV-C disinfection units for disinfecting the inhaled and exhaled air and one or more devices for fitting the half mask tightly around the face of its wearer are provided.