Invention is described which sterilizes air contaminated with airborne virus by means of superheating the air to over 400 Fahrenheit then cooling air to breathable temperatures. The invention disposes a fan pushing contaminated air into a positive temperature coefficient semiconductor heater to superheat the air which is subsequently cooled by a two stage cooling system. First stage of the cooling system is an air-to-air heat exchanger using ambient air from second fan to cool the superheated air. The second stage of cooling is provided by a solid-state Peltier heat pump which further transfers heat energy to ambient air provided by a third fan. Invention is disposed onto a sealed helmet which the sterilized air is conveyed causing an overpressure to eliminate the possibility of contaminated air entering the helmet. The invention is entirely reusable after use in a contaminated environment and does not rely on filters to remove airborne virus.

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.

The Wearable air purifier sought to be patented here is a new type of PPE among products such as Facial masks and Facial hoods. It achieves the objective of breathing in pure air in the least physically invasive manner while Facial masks and Facial hoods are extremely physically invasive. The discomfort of a fabric pressing against parts of human face and the difficulty imposed on the breathing process is avoided by wearing a Wearable air purifier. Along with the movable transparent visor, the Wearable air purifier is a clean air supply device in a design and form profile that all are familiar with, the baseball cap.

A protective apparel support system is disclosed comprising a support frame configured to rest on the shoulders of a wearer, the support having a first shoulder member, a second shoulder member and a shield engagement portion. A shield is selectively coupleable to the support and protective apparel is coupled to the shield.

An absorption filter structure with increased filter efficiency in an easily detachable form for optional use with a helmet structure. The absorption filter structure includes a filtration unit to pass external air through an internal space in a filtration direction. An absorption layer, a filtering layer and a shielding layer are stacked in the filtration unit. For filtering the external air, an external air vent, and an internal air vent are also provided. When combined with a helmet, the absorption filter structure is configured to be easily detachable from the helmet.

Described herein are embodiments directed to a particle repelling helmet having particle mitigation system that keeps dust particles from going into the interior of the helmet. The helmet comprises a face vent that provides an unobstructed pathway between an external environment and a wearers eyes, nose and mouth. A spacer arrangement connected to an inner side of the helmet provides a channel between the wearers head and the inner helmet side. A fan blows air through the helmet, across the wearers head and out the face vent and head receiving opening in the bottom of the helmet. Electrodes disposed along the edge of the face vent produce an electrostatic barrier that spans the face vent thereby further preventing charged dust from going into the helmet. The helmet can also comprise an ionizer that generates ions, which charges neutral dust particles that can be blocked by the barrier.