A respirator comprising: an air supply unit arranged to deliver air at its output; headgear comprising a cradle for interfacing with a user’s head, and a face covering from within which the user breathes; a tube to receive air from the air supply unit; and a vibration decoupler, provided between the air supply unit and the head gear interface component, such that in use vibrations from the air supply and tube are reduced.

A respirator comprising: an air supply unit arranged to deliver air at its output; headgear comprising a cradle for interfacing with a user’s head, and a face covering from within which the user breathes; a tube to receive air from the air supply unit; and a vibration decoupler, provided between the air supply unit and the head gear interface component, such that in use vibrations from the air supply and tube are reduced.

A powered air-purifying respirator (PAPR) assembly includes, among other things, a tube extending from a filtration unit to a headpiece system. The tube is biased toward a looped position where the tube includes a loop. A PAPR manufacturing method includes, among other things, reorienting a tube to have a loop by placing the tube about a mandrel, heat-treating the tube, and removing the mandrel from the tube. The tube is biased toward a looped position after the removing due to the heat-treating while the tube is reoriented to have the loop.

A powered air-purifying respirator (PAPR) assembly includes, among other things, a tube extending from a filtration unit to a headpiece system. The tube is biased toward a looped position where the tube includes a loop. A PAPR manufacturing method includes, among other things, reorienting a tube to have a loop by placing the tube about a mandrel, heat-treating the tube, and removing the mandrel from the tube. The tube is biased toward a looped position after the removing due to the heat-treating while the tube is reoriented to have the loop.

A flow through photochemistry apparatus and methods of use are disclosed in the present application. One or more reactant materials are passed through a reaction chamber and are exposed to electromagnetic radiation. The reaction chamber has reflective walls arranged to reflect electromagnetic radiation across the volume of the chamber a plurality of times, thereby increasing the probability of the electromagnetic radiation interacting with the reactive materials. The reaction chamber may be used for sterilization and photochemistry applications.

A powered air-purifying respirator has a blower unit with an inlet and an outlet. The blower unit draws air through the inlet and out of the outlet. A filter assembly is removably connected on the outlet end of the blower unit. The filter assembly has a first end and a second end. The first end is removably connected to the outlet of the blower unit, and the second end of the filter assembly is adapted and configured to be coupled to a breathing hose.

A powered air-purifying respirator has a blower unit with an inlet and an outlet. The blower unit draws air through the inlet and out of the outlet. A filter assembly is removably connected on the outlet end of the blower unit. The filter assembly has a first end and a second end. The first end is removably connected to the outlet of the blower unit, and the second end of the filter assembly is adapted and configured to be coupled to a breathing hose.

A face mask having a positive air flow by use of an attached portable air purification unit. The device is used to filter and purify inhaled air, making it easier for individuals to comfortably wear a face mask for public health and safety. An outtake filter inhibits contaminated air from being expelled by the mask wearer. The portable air purifier is powered by means of rechargeable battery power using a USB connector, allowing static or dynamic use.

Proposed is a mask using an oxygen supply device. The mask includes a purification cartridge which purifies air for breathing, a mask part which introduces and discharges the air purified via the purification cartridge, a connector which fastens together the purification cartridge and the mask part, and an oxygen supply device which supplies oxygen through an oxygen hose connected to the connector.

Proposed is a mask using an oxygen supply device. The mask includes a purification cartridge which purifies air for breathing, a mask part which introduces and discharges the air purified via the purification cartridge, a connector which fastens together the purification cartridge and the mask part, and an oxygen supply device which supplies oxygen through an oxygen hose connected to the connector.