Abstract: A supplied air respirator having an airflow path to supply supplied air to a user. The respirator includes a control unit having a sensor located in the airflow path that communicates with a CPU. The CPU also communicates with an indicator that can provide either tactile, audible or visual status indications. One or any combination of these can be used. A power source is provided for powering the CPU and the indicators. The. CPU compares a sensor signal from the sensor with a predetermined operating flow rate and a desired flow rate and indicates to the user the status of the respirator. The CPU continually communicates with said sensor and does not shut down.

Abstract: A respiratory protective device comprises a housing that defines a chamber for containing tubing to provide clean air. Securing equipment is attachable to a user of the respiratory protective device. A mounting plate is disposed on a center axis and coupled to the housing for securing the housing to the securing equipment. The mounting plate is coupled to the housing via an interlocking connection to allow the housing to rotate relative to the mounting plate between an unlocked position and a locked position. In the locked position, the housing is generally perpendicular relative to the center axis.

Abstract: A powered air purifying respirator (PAPR) device comprises an enclosure extending along a longitudinal axis between a first end of the enclosure and a second end of the enclosure. The enclosure defines an air inlet in fluid communication with environmental air. A filter module is disposed in the enclosure in fluid communication with the air inlet for filtering the environmental air to produce clean air. A blower system is disposed in the enclosure in fluid communication with the filter module for pressurizing the clean air. The enclosure includes an upper housing for receiving the filter module. A plate extends between the first end and the second end defining an air outlet in fluid communication with the filter module and the blower system. The air inlet is disposed adjacent the second end and the air outlet is disposed adjacent the first end.

Abstract: A respirator system having a vortex tube with an arcuate hot leg. A respirator helmet has an inlet hose. A vortex tube with an arcuate hot leg and an inlet port is coupled to the respirator helmet. A compressed air source is coupled to the inlet port to supply air to the vortex tube in the range of 110 liter/minute (l/min) to 425 l/min and in the range of 40 pounds per square inch (psi) and 80 psi. This portable arrangement provides effective temperature control within the respirator system.

Abstract: A respirator system having a vortex tube with an arcuate hot leg. A respirator helmet has an inlet hose. A vortex tube with an arcuate hot leg and an inlet port is coupled to the respirator helmet. A compressed air source is coupled to the inlet port to supply air to the vortex tube in the range of 110 liter/minute (l/min) to 425 l/min and in the range of 40 pounds per square inch (psi) and 80 psi. This portable arrangement provides effective temperature control within the respirator system.

Abstract: A vortex tube with an arcuate hot leg. A vortex tube include a vortex chamber couple to a first tube, a cold leg, to carry a cold air stream and a second tube, the hot leg, to cause the separation of hot and cold air. The hot leg bends in an arc to allow a longer and more efficient hot leg in reduced linear space.

Abstract: A vortex tube with an arcuate hot leg. A vortex tube include a vortex chamber couple to a first tube, a cold leg, to carry a cold air stream and a second tube, the hot leg, to cause the separation of hot and cold air. The hot leg bends in an arc to allow a longer and more efficient hot leg in reduced linear space.