A face frame including features for coupling the surgical garment to a surgical helmet. The face frame (524) comprises a lower beam (528) connected by a pair of posts (526, 527). The posts of the face frame comprise a face frame coupler (552, 554) configured to removably couple the face frame to a surgical helmet.

A face frame including features for coupling the surgical garment to a surgical helmet. The face frame (524) comprises a lower beam (528) connected by a pair of posts (526, 527). The posts of the face frame comprise a face frame coupler (552, 554) configured to removably couple the face frame to a surgical helmet.

A system and method include a duct including an internal air passage. One or more ultraviolet (UV) light emitters are coupled to the duct. The UV light emitter(s) are configured to emit UV light into air that passes through the internal air passage. An air inlet is coupled to the duct. The air inlet is in fluid communication with the internal air passage. An air outlet is coupled to the duct. The air outlet is in fluid communication with the internal air passage. A blower is disposed within the duct. The blower is configured to draw the air into the internal air passage through the air inlet, and discharge the air from the internal air passage through the air outlet. The air is disinfected within the internal air passage by the UV light emitted by the one or more UV lights. A sensor is coupled to one or more of the duct, the air inlet, or the air outlet. The sensor is configured to output signals. A control unit is in communication with the UV light emitter(s), the blower, and the sensor. The control unit is configured to receive the signals from the sensor and control one or both of the UV light emitter(s) or the blower based on the signals.

A head-mounted device capable of more highly accurately measuring the physical conditions of a wearer as a worker that are necessary for estimating the possibility of heat stroke is provided. A head-mounted device includes an outer shell; a first channel as a gap between a head of a wearer and the outer shell; a second channel provided in the outer shell and connected to the first channel; a fan configured to send air from one of the first channel and the second channel to the other; a salinity sensor configured to measure salt concentration of sweat of the wearer; a first humidity sensor configured to measure an absolute humidity of intake air entering one of the first channel and the second channel; and a second humidity sensor configured to measure an absolute humidity of exhaust air exiting from the other of the first channel and the second channel.

A head-mounted device capable of more highly accurately measuring the physical conditions of a wearer as a worker that are necessary for estimating the possibility of heat stroke is provided. A head-mounted device includes an outer shell; a first channel as a gap between a head of a wearer and the outer shell; a second channel provided in the outer shell and connected to the first channel; a fan configured to send air from one of the first channel and the second channel to the other; a salinity sensor configured to measure salt concentration of sweat of the wearer; a first humidity sensor configured to measure an absolute humidity of intake air entering one of the first channel and the second channel; and a second humidity sensor configured to measure an absolute humidity of exhaust air exiting from the other of the first channel and the second channel.

A helmet for protection during an impact, wherein an inner liner may slidably couple to the outer liner through at least one return spring. The outer liner includes an interior surface with a shelf extending inward. The shelf includes an arresting surface. The inner liner has an exterior surface, an interior surface and an edge connecting the exterior surface to the interior surface. The edge faces the arresting surface of the shelf. The inner liner is slidably movable relative to the outer liner between a first position in which the edge of the inner liner is separated from the arresting surface of the shelf by a first gap, and an arrested position in which a portion of the edge of the inner liner is in contact with a portion of the arresting surface of the shelf.

An inner buffering structure of a helmet comprising an air bladder, wherein the air bladder comprises a detachable inner-layer air bladder and an outer-layer air bladder, and the inner-layer air bladder is used for being in contact with a user's head; a plurality of ventilation openings is formed in the inner-layer air bladder and the outer-layer air bladder; the portions where the inner-layer air bladder and the outer-layer air bladder correspond to the ventilation openings are provided with inner convex edges extending towards the interior of the ventilation openings; a first air valve is arranged on the inner-layer air bladder, a second air valve is arranged on the outer-layer air bladder, and a reserved hole allowing the first air valve to pass through is formed in the outer-layer air bladder.

An inner buffering structure of a helmet comprising an air bladder, wherein the air bladder comprises a detachable inner-layer air bladder and an outer-layer air bladder, and the inner-layer air bladder is used for being in contact with a user's head; a plurality of ventilation openings is formed in the inner-layer air bladder and the outer-layer air bladder; the portions where the inner-layer air bladder and the outer-layer air bladder correspond to the ventilation openings are provided with inner convex edges extending towards the interior of the ventilation openings; a first air valve is arranged on the inner-layer air bladder, a second air valve is arranged on the outer-layer air bladder, and a reserved hole allowing the first air valve to pass through is formed in the outer-layer air bladder.

An eye protection device including: a viewing material; and a frame connected to the viewing material. Wherein the frame includes at least one contact body projecting from the frame, the at least one contact body having at least one contact surface, the at least one contact surface being configured to project from the frame at an angle of 30° to 150° relative to a surface of the viewing material, wherein the at least one contact body comprises at least one frame magnet integrated into the at least one contact body and configured to magnetically couple with a headgear.

An eye protection device including: a viewing material; and a frame connected to the viewing material. Wherein the frame includes at least one contact body projecting from the frame, the at least one contact body having at least one contact surface, the at least one contact surface being configured to project from the frame at an angle of 30° to 150° relative to a surface of the viewing material, wherein the at least one contact body comprises at least one frame magnet integrated into the at least one contact body and configured to magnetically couple with a headgear.