Provided is a protective mask, including: a mask, a hood, a barrier layer and an air guide, the mask comprising protective goggles, air outlet and air inlet, the air outlet and air inlet being disposed respectively at the upper and lower ends of the protective goggles, the air inlet being disposed with a filter, the air inlet and the air outlet communicating with the inside of the mask; the hood being connected to the mask, and covering the edge of the mask; the barrier layer being disposed at the connection between the mask and the hood to block external air from entering; and the air guide being disposed at the air outlet. The air enters the mask and the hood through the air inlet, guided by the air guide to the air outlet, and then discharged to the outside through the air outlet.

A hard hat style helmet includes a powered and filtered air intake and distribution system. The air distribution system directs filtered air into a breathing mask structured and located to cover a wearer's mouth and nose. The helmet includes wireless telecommunication features and a speaker and microphone to enable hands-free voice calling. The helmet also includes a camera for transmitting the wearer's field of view. The helmet also includes a transparent display inside the wearer's field of view and another display outside the wearer's field of view.

A head covering device comprising a rigid component comprising a transparent face shield, a fabric component, wherein the face shield and fabric combine to cover an entire head of a user and form a seal around the user's neck, an intake port with an inlet filter, an exhaust port with an exhaust filter, an air mover causing filtered air to enter the intake port and exhaust air to exit the exhaust port, and communication hardware facilitating communication for the user.

A head covering air filtering device comprising a rigid component comprising a transparent face shield, a fabric component, wherein the rigid component and the fabric component combine to cover an entire head of a user and form a seal around the user's neck. The device further comprises an intake filter to filter all intake air entering the device, an exhaust filter to filter all exhaust air exiting the device, and an air mover causing intake air to enter the device and exhaust air to exit the device.

A device for filtering air for a user comprising a rigid component comprising a transparent face shield that provides a space for air between an inside surface of the face shield and the user's face, an intake port, through which air enters the device, an exhaust port, through which air exits the device, a fabric component affixed to the rigid component that, combined with the rigid component, covers the user's head and seals around the user's neck, an intake filter that filters air passing through the intake port, an exhaust filter that filters air passing through the exhaust port, and an air mover held by the rigid component that moves air through the intake port and out the exhaust port.

The present invention provides a respirator. The respirator (100) has an outer housing (103), a middle frame (101), and a facial seal (108). The facial seal (108) is connected to the middle frame (101), and is fit to and forms a seal to the face of a user when the respirator (100) is in use. The respirator (100) further has an integrated board (102). The integrated board (102) is arranged between the outer housing (103) and the middle frame (101), and is provided with a functional member (107) for the respirator (100).

In a contaminated environment with health threatening aerosol a helmet with transparent face shield as an alternative to mask can be used. The helmet protects the entire head of a person using a transparent shield that is knotted at the back of the neck. The helmet uses a fan to suck the environment air, filter it with an aerosol filter and releases the clean air into the interior of the helmet. The contaminated air inside the helmet is filtered and then the clean air is sucked by another fan and released to the environment. The fans are battery powered and their speed can be controlled using sensors and a controller.

Implementations described herein include surgical helmet assemblies that have a helmet enclosure shaped to encircle a head of a user. The helmet enclosure retains a fan and includes a brow bar portion at a front of the helmet enclosure that is shaped to extend along a brow or a forehead of the user and having a light positioned therein. The helmet enclosure also includes a stabilizer extending downward from the helmet enclosure in front of the ears of a user, a face shield that is transparent and coupleable to at least the brow bar portion, a headband shaped to extend across an occiput region of the user's head, and a surgical garment for covering at least the head and shoulders of a user in use. The brow bar portion includes vents disposed therein to direct airflow pushed through the helmet enclosure from the fan onto the user. The face shield is coupleable to the helmet enclosure by one or more of a hook and loop fastener on the helmet enclosure or the stabilizer and a post protruding from the brow bar portion.

There is provided a method of controlling a powered air purifying respirator blower system to deliver a substantially uniform volumetric airflow to a user, the system comprising a fan powered by a battery in communication with a variable speed electric motor, the variable speed electric motor is controlled by an electronic control unit for delivering a forced flow of air through at least one filter to a user, comprising the steps of: (a) determining an estimated system run time by summing a battery run time remaining and a system run time; and (b) altering a speed of the variable speed electric motor when the estimated system run time is equal to or less than a desired system run time.

A hardhat with a protected overhead cooling fan comprises: a main hardhat body component having an upper aperture through which air is drawn and pulled down into a battery powered cooling fan; a fan cover component spaced at least about ¼ inch from and permanently adhered to the main hardhat body with a plurality of linear ridges; a battery pack for the cooling fan; and a plurality of connecting wires. A method of use is also disclosed.