In an example, a cover device for a regulator, which has a purge button and a mouthpiece connected to the regulator, includes a body which has: a mouthpiece housing to receive the mouthpiece through an access opening which presents a friction fit to squeeze the mouthpiece passing therethrough in a squeezed state to enter and exit a hollow interior of the mouthpiece housing, the hollow interior configured to store the mouthpiece in a relaxed state; a regulator support connected to the mouthpiece housing to support a bottom surface of the regulator when the mouthpiece is inserted into the hollow interior of the mouthpiece housing; and a button cover connected to the mouthpiece housing to cover the purge button on a top surface of the regulator when the mouthpiece is inserted into the hollow interior of the mouthpiece housing, while exposing a portion of the top surface of the regulator surrounding the purge button.

In an example, a cover device for a regulator, which has a purge button and a mouthpiece connected to the regulator, includes a body which has: a mouthpiece housing to receive the mouthpiece through an access opening which presents a friction fit to squeeze the mouthpiece passing therethrough in a squeezed state to enter and exit a hollow interior of the mouthpiece housing, the hollow interior configured to store the mouthpiece in a relaxed state; a regulator support connected to the mouthpiece housing to support a bottom surface of the regulator when the mouthpiece is inserted into the hollow interior of the mouthpiece housing; and a button cover connected to the mouthpiece housing to cover the purge button on a top surface of the regulator when the mouthpiece is inserted into the hollow interior of the mouthpiece housing, while exposing a portion of the top surface of the regulator surrounding the purge button.

A fine cover particularly for use with respirator facemasks comprises one or more components, each defined by a perimeter, holding flexible, breathable material. The components expand to cover part of a respirator facemask and fold smoothly to close exposed surfaces during removal, thereby preventing pathogen shedding. The cInstitute of Medicine, 2006 Reusability of Facemasks During an Influenza Pandemic: Facing the Flu; losed unit is placed in a bag for cleaning, disposal, or testing. Samples taken from fine cover can be tested to detect airborne pathogens, an optimal airborne pathogen monitoring system in medical facilities. In addition, the fine cover may have graphical imagery to directs an observer's gaze in the same patterns followed when looking at an unmasked face, thereby reducing subconscious interaction anxiety.

An aircraft emergency oxygen supply system includes: at least one passenger oxygen mask; a compartment for housing the at least one passenger oxygen mask; and at least one oxygen hose. E each of the at least one passenger oxygen mask is coupled to a respective oxygen hose for supplying a gas comprising oxygen to the respective oxygen mask; at least one fixing clip. Each of the at least one fixing clip comprises a lanyard fixing portion and at least one C-shaped oxygen hose fixing portion for releasably holding one or more oxygen hoses. For each of the at least one fixing clip, the aircraft emergency oxygen supply system comprises a lanyard having a first end, which is fixed at the compartment, and an opposing second end, which is fixed to the lanyard fixing portion of the respective fixing clip.

An oxygen mask container assembly that includes a container that defines a container interior and includes a container opening, an oxygen mask assembly disposed in the container interior, a mask ejector in operative communication with the mask assembly, a cover assembly that is movable between a closed position where the cover assembly covers the container opening and an open position where the mask can be ejected through the container opening and from the container interior, and a latch assembly. The oxygen mask assembly includes a mask and a lanyard. The cover assembly includes a light assembly therein that is configured to shine light below the cover assembly. The latch assembly is configured to move the cover assembly between the closed position and the open position.

An oxygen mask container assembly that includes a container that defines a container interior and includes a container opening, an oxygen mask assembly disposed in the container interior, a mask ejector in operative communication with the mask assembly, a cover assembly that is movable between a closed position where the cover assembly covers the container opening and an open position where the mask can be ejected through the container opening and from the container interior, and a latch assembly. The oxygen mask assembly includes a mask and a lanyard. The cover assembly includes a light assembly therein that is configured to shine light below the cover assembly. The latch assembly is configured to move the cover assembly between the closed position and the open position.

Methods and systems for controlling a powered air purifying respirator blower system where volumetric airflow is stepped down into predetermined discrete ranges based on system loading and desired runtime.

Methods and systems for controlling a powered air purifying respirator blower system where volumetric airflow is stepped down into predetermined discrete ranges based on system loading and desired runtime.

A respiratory equipment for an aircraft, a pilot or first officer of the aircraft forming a user of the respiratory equipment, the respiratory equipment comprising a head armature, configured to be worn on the user's head, a respiratory mask configured to be applied, in a use position around the mouth and nose of a user, an inflatable harness configured to be coupled to a pressurized gas source, an inflation of the inflatable harness causing an extension of the inflatable harness such that the respiratory mask can be brought opposite the mouth and nose of a user, and a purge of the inflatable harness causing a constrained application of the inflatable harness against the mouth and nose of a user, wherein the head armature comprises at least an occipital member, and a front cradle for receiving and lodging the respiratory mask in a waiting position, wherein the inflatable harness is fixed to the occipital member and the inflatable harness is coupled to the respiratory mask.

A respiratory equipment for an aircraft, a pilot or first officer of the aircraft forming a user of the respiratory equipment, the respiratory equipment comprising a head armature, configured to be worn on the user's head, a respiratory mask configured to be applied, in a use position around the mouth and nose of a user, an inflatable harness configured to be coupled to a pressurized gas source, an inflation of the inflatable harness causing an extension of the inflatable harness such that the respiratory mask can be brought opposite the mouth and nose of a user, and a purge of the inflatable harness causing a constrained application of the inflatable harness against the mouth and nose of a user, wherein the head armature comprises at least an occipital member, and a front cradle for receiving and lodging the respiratory mask in a waiting position, wherein the inflatable harness is fixed to the occipital member and the inflatable harness is coupled to the respiratory mask.