Provided is a filtering facepiece respirator. The respirator includes a mask body having an anterior side portion, a posterior side portion, a middle portion, a first side portion, a second side portion, a top side portion, a bottom side portion and outer edge portions. The respirator further includes a primary port positioned at the anterior middle portion of the mask body and a detachable primary port adapter which is positioned over and engages the primary port. The respirator may further include an oxygen port and oxygen port adapter and a luer port and luer port adapter.

An air supply mechanism with lower air duct, a headgear and an electric protective equipment are disclosed. The air supply mechanism with lower air duct includes: an air inlet mask, the front of the air inlet mask being raised in an arc shape and the back of the air inlet mask being arranged to fit to the human face, the air inlet mask including a first ventilation structure and a second ventilation structure connecting the front and back; an air supply pipe fixed on one side of the air inlet mask and in communication with the first ventilation structure and the second ventilation structure to supply air to the front of the air inlet mask; and a filter screen fixedly covering the first ventilation structure to filter the air entering the first ventilation structure from the front of the air inlet mask.

An air supply mechanism with lower air duct, a headgear and an electric protective equipment are disclosed. The air supply mechanism with lower air duct includes: an air inlet mask, the front of the air inlet mask being raised in an arc shape and the back of the air inlet mask being arranged to fit to the human face, the air inlet mask including a first ventilation structure and a second ventilation structure connecting the front and back; an air supply pipe fixed on one side of the air inlet mask and in communication with the first ventilation structure and the second ventilation structure to supply air to the front of the air inlet mask; and a filter screen fixedly covering the first ventilation structure to filter the air entering the first ventilation structure from the front of the air inlet mask.

A bidirectional reusable filtering face mask is described that includes an anatomical base provided with means to promote adherence to the face and pass-through elements for closure by means of ties; a first filtering chamber used to prevent respiratory droplets from spreading and obtained by fixing a removable disposable filter on the outer side of the anatomical base; a second filtering chamber comprising a removable dome with a recess in its apical part adapted to accommodate a main removable disposable filter, where the filter is secured to the recess by means of a protective grid; and means for assembling the components of the second filtering chamber with the first filtering chamber.

A bidirectional reusable filtering face mask is described that includes an anatomical base provided with means to promote adherence to the face and pass-through elements for closure by means of ties; a first filtering chamber used to prevent respiratory droplets from spreading and obtained by fixing a removable disposable filter on the outer side of the anatomical base; a second filtering chamber comprising a removable dome with a recess in its apical part adapted to accommodate a main removable disposable filter, where the filter is secured to the recess by means of a protective grid; and means for assembling the components of the second filtering chamber with the first filtering chamber.

A rapidly deployable, pressure sealed, cough and sneeze aerosol, containment apparatus and a system to virtually eradicate the cold, the flu, and Covid-19. A face mask having a rigid first section configured to hold a filter and a pliable second section configured to fit on a person's face; a face mask seal formed on an edge of the pliable second section of the face mask; a curved surface on the face mask seal configured to fold inward to form a seal on the person's face when pressed on the person's face.

A rapidly deployable, pressure sealed, cough and sneeze aerosol, containment apparatus and a system to virtually eradicate the cold, the flu, and Covid-19. A face mask having a rigid first section configured to hold a filter and a pliable second section configured to fit on a person's face; a face mask seal formed on an edge of the pliable second section of the face mask; a curved surface on the face mask seal configured to fold inward to form a seal on the person's face when pressed on the person's face.

A mask apparatus includes: a mask body including a rear body and a front body coupled to a front surface of the rear body and providing an inlet and an outlet, a face guard coupled to the rear body, accommodating a portion of user's face, and defining a respiration space, and an air cleaning module purifying air introduced into the inlet of the front body and supplying the purified air to the respiration space. A portion of the rear body protrudes toward the front body and defines an accommodation portion configured to accommodate the air cleaning module. The air cleaning module includes: a fan module accommodated in the accommodation portion, a filter disposed at a rear side of the fan module and purifying air flowing into the fan module, and a filter housing including a filter frame and a filter cover covering surrounding side and rear surfaces of the filter.

A mask apparatus includes: a mask body including a rear body and a front body coupled to a front surface of the rear body and providing an inlet and an outlet, a face guard coupled to the rear body and defining a respiration space, and an air cleaning module purifying air introduced into the inlet and supplying the purified air to the respiration space. Each of left and right edges of the rear body provides a strap connection portion into which a strap is coupled. The strap connection portion includes: a strap recess provided at a rear surface of the rear body, a strap hole defined in the strap recess, a strap bar connecting upper and lower surfaces of the strap recess and spaced apart from the strap hole, and a waterproof sleeve extending from the front surface of the rear body along an edge of the strap hole.

A mask apparatus includes: a mask body including a rear body and a front body coupled to a front surface of the rear body and providing an inlet and an outlet, a face guard coupled to the rear body and defining a respiration space, and an air cleaning module purifying air introduced into the inlet and supplying the purified air to the respiration space. Each of left and right edges of the rear body provides a strap connection portion into which a strap is coupled. The strap connection portion includes: a strap recess provided at a rear surface of the rear body, a strap hole defined in the strap recess, a strap bar connecting upper and lower surfaces of the strap recess and spaced apart from the strap hole, and a waterproof sleeve extending from the front surface of the rear body along an edge of the strap hole.