A wearable air filter system, including a mouth covering section, including a body, a fan disposed on at least a portion of a rear of the body to move air from a front of the body to a rear of the body, at least one purge valve angularly disposed on at least a portion of a base of the body to allow the air from the rear of the body to move through the at least one purge valve to the front of the body, such that the at least one purge valve prevents movement of the air from the front of the body through the at least one purge valve to the rear of the body, a first media unit disposed on at least a portion of a first side of the body, a second media unit disposed on at least a portion of a second side of the body opposite with respect to the first side of the body, a microphone disposed within at least a portion of the body to receive at least one external audio input therein, and an external speaker disposed on at least a portion of the body to emit at least one internal audio input therefrom, goggles removably connected to at least a portion of the body to prevent at least one of the air and at least one pathogen from moving therethrough, and a wearable control device connected to the mouth covering section to control operations of the mouth covering section and display a vitals reading thereon.

A mask assembly includes a mask configured to cover a mouth and nasal passage of the user, a valve coupled to the mask and configured to direct air out of the mask assembly, and a strap coupled to the mask. The mask assembly additionally includes a module removably coupled to the mask and configured to direct air into the mask assembly. The module includes a filter, an ultraviolet chamber, and a light source.

A mask apparatus includes a mask body, a fan module, a seal that defines a breathing space, a pressure sensor coupled to the mask body and configured to sense an air pressure in the breathing space, and a controller coupled to the mask body and configured to control a rotation speed of the fan module based on the air pressure. The controller is configured to determine a breathing cycle based on a maximum pressure value and a minimum pressure value among air pressure values sensed by the pressure sensor, determine a time difference between a maximum time point and a minimum time point, determine an expected time point of inhalation in a subsequent breathing cycle based on the breathing cycle and the time difference, and increase the rotation speed of the fan module based on a current time corresponding to the expected time point of inhalation.

A mask apparatus including a mask body that defines a communication hole, a sensor mounting portion that extends from a front surface of the mask body, that surrounds the communication hole, and that defines an installation space therein, a seal coupled to a rear surface of the mask body and configured to define a breathing space between the mask body and a user, a pressure sensor accommodated in the installation space and configured to sense air pressure inside the breathing space that is in communication with the communication hole, and a film disposed in the installation space and configured to restrict permeation of moisture from the breathing space into the installation space through the communication hole.

A mask apparatus includes a mask body and a mask body cover coupled to the mask body. The mask body includes a front surface, a rear surface, and a pair of air ducts disposed at left and right sides of the front surface. The mask body is configured to mount a pair of fan modules at suction sides of the pair of air ducts. The mask body cover covers the pair of air ducts and the pair of fan modules. The mask body defines a cover coupling groove along an edge of the mask body, and the cover coupling groove is coupled to an edge of the mask body cover.

A system includes a mask having a filter. The filter is configured to capture aerosol particles. The filter may be formed from a material that is UVC durable and UVC transmissive. The system also includes a UVC LED configured to emit UVC radiation into the filter.

A mask comprising a mask frame, a nose mount, a removable filter stand off support arm, a plurality of removable temple support arms, where each temple support arm has an attachment mechanism to easily attach or detach one or more of the temple support arms to or from the mask frame, a filter rim for attaching a filter to the interior, exterior or both the interior and exterior of the mask frame, and a plurality of removable filter clips for attaching the filter to the filter rim.

A rapidly deployable, pressure sealed, cough and sneeze aerosol, containment apparatus to substantially eradicate the cold, the flu, and Covid-19.

A mask or respirator that fits over a user's mouth and nose, comprising a material that covers the user's nose and mouth, and a means to incorporate wired microphones, wireless microphones, and other devices.

A system is described to protect a person from exposure to pathogens in breathing. A control device which can be an adjustable or removable filter, a valve to switch air sources, added substances interruption of the air stream is controlled by a determination made by a machine learning system with a machine learning model usually implemented as a neural network. The determination is made on the basis of training of the model which can be one or multiple stages with one stage in a large server not in real time and another stage in a field device which uses sensors and other information sources to acquire data to make a decision concerning the relative risk of various circumstances. Conditions detected include presence of other persons, level of activity of the protected person and many other factors concerning the surroundings, activity and history of the protected person.