[villagetinker]

Having an engineering background, this does not appear to be practical, in MHO. There does not appear to be sufficient room for batteries, blowers, and the motors to drive the blowers. Also, a CPAP has valves to provide air under pressure, and then to allow the breath to be exhaled. I have had two wives that both use (or used) CPAP machines, and if this size is really practical would be great for traveling. The point about a mouth breather is well taken, as this design is based on the assumption that the persons mouth will remain closed. Also, from first hand observation I think this will still need a band around the head to hold it in place.
It will be very interesting to see if this can be built, and approved by FDA or which ever agency approves these devices.