A personal protection system including a helmet worn on the head of a user and a hood removably coupled to the helmet. The hood may comprise a shell, a transparent face shield, and a mounting element configured to removably couple the hood to the helmet. The transparent shield may comprise a first lens and a second lens. The first lens may be coupled to the shell, and the second lens may be coupled to the first lens. The second lens may be coupled to the first lens by one of an adhesive, heat staking or ultra-sonic welding. The hood may also comprise a mounting element configured to center the transparent face shield relative to a light assembly coupled to the helmet such that the light emitted from the light assembly passes through a u-shaped opening or slot defined by the second lens.

Provided is an adsorption filter structure, and more specifically, an adsorption filter structure with easy detachment and increased filter efficiency. The adsorption filter structure includes a filtration unit passing external air through an internal space in a filtration direction, and filtering the external air, an external vent and an internal vent, and the helmet to which the adsorption filter structure is applied includes a protection unit into which the adsorption filter structure is interpolated and the external air entrance hole is formed, a neck packing part, a nose cast, and an exhalation port. Accordingly, the helmet, including the adsorption filter structure, is designed to be easily detached without protrusion so that a wearer's field of vision is secured, wherein the adsorption filter structure that is not restricted in actions during work is applied. The adsorption layer, the filtration layer, and the shielding layer are stacked therein so as to exhibit optimal efficiency, and thus the filtration efficiency is increased.

Single-use, disposable helmets, hoods, and helmet/hood assemblies are disclosed. Methods of making and using single-use, disposable helmets, hoods, and helmet/hood assemblies are also disclosed.

A system and method for protecting against respiratory hazards, the system including: a mask for placement on a face of a user, a hood configured to cover the head of the user and interface with the mask, an air blower configured to provide air to the hood, at least one filter configured to filter air entering the hood via the air blower, at least one pressure sensor, provided to the hood, and a controller to receive data from the at least one pressure sensor and configured to control the blower to maintain a predetermined air pressure in the hood. The method includes measuring a pressure reading related to the system, increasing blower power if the pressure reading is less than a pressure limit, and decreasing blower power if the pressure reading is greater than the pressure limit.

A system for protecting against respiratory hazards, the system comprising a hood configured to cover a head of a user and interface with a mask, when the mask is positioned on a face of the user; an air blower connected with the hood in order to provide air to an interior of the hood; at least one pressure sensor coupled to a controller, the at least one sensor for measuring air pressure at a selected location; and the controller to receive data from the at least one pressure sensor and configured to control the air blower to dynamically adjust the air pressure in the interior of the hood to a set pressure, such that the controller configures operation of the air blower by an operational mode selected from a plurality of operational modes, such that each of the operational modes are represented by a different set of operational parameters including the set pressure.

A face shield assembly with positive pressure airflow comprises a head band, a transparent face shield, a foam spacer, and at least one airflow supply unit providing a positive pressure airflow. The head band attaches the face shield outward and the foam spacer inward. The airflow supply unit has hose(s) to connect the holes distributed in the foam spacer, consequently bring forth airflow on the front of the user's face to prevent the droplets and particles from being inhaled into the user's nose and mouth.

A device in the form of a cap, for generating an isolation barrier for airborne pathogens between the wearer's face and the environment. A major part of the outer surface comprises filter material, allowing filtered air to flow from the environment into a chamber beneath the surface layer. A fan sucks air through the filter element and into the chamber. A horizontally oriented slot is situated across the visor portion of the cap structure, in front of the forehead of the person when the device is worn by the person. The slot has a width substantially smaller than the length. The flow of filtered air within the chamber is directed out of the slot as a curtain-like flow of filtered air in front of the face of the person. A cross-flow fan mounted just above the slot is most effective in generating the curtain flow.

A magnetic quick connect for a fluid delivery system includes a male coupling member and a female coupling member. The male coupling member defines a first outer fluid communication path and includes a first magnetic material. A first inner member is disposed within the first outer fluid communication path and defines a first inner communication path. The female coupling member defines a second outer fluid communication path and includes a second magnetic material. A second inner member is disposed within the second outer fluid communication path and defines a second inner communication path. The male and female coupling members are detachably held together by an attractive force between the first and second magnetic materials such that the first and second outer communication paths are held in fluid communication, and the first and second inner communication paths are held in fluid communication.

A protective headgear system includes a cover including a substantially transparent facial shield, a sheet sealingly coupled to the facial shield around the cover's perimeter, the sheet including a substantially anterior portion including a first sheet material configured to act as a substantial barrier to the passage of air, and including a substantially posterior portion including a second sheet material configured to filter contaminants from air, and one or more seams between the first sheet material and the second sheet material, a flow restrictor configured to significantly create a flow barrier between the cover and the neck of a user for providing an interior volume, an air mover configured to draw some of the external air into the interior volume, a filter coupled to the cover, and one or more flow directors configured to direct internal air, including at least some exhaled air, toward the second sheet material.

A powered air purifying respirator has a headcover with an air intake, a face cover, and a neck cover. The face cover seals to the headcover and pivots from the headcover. The neck cover extends from the headcover and the face cover. A first fan motor powers a first fan and a second fan motor powers a second fan. The headcover has an upper section and a lower section. The first fan is flow connected to the upper section. The upper section is formed as a hollow area between a user's head and the headcover. The first fan is flow connected to the lower section. The lower section is formed as a hollow area between a user's face and the face cover. A filter draws air from outside of the upper section and lower section. The filter is driven by a fan.