Take a standard vacuum cleaner, add an ultrasonic transmitter to the head of the cleaner, the ultrasonic waves will vibrate and loosen the dirt particles, making for more efficient vacuuming.-- Micky Dread, Apr 27 2003 I mean this to be a dry vacuum cleaner for everyday use, not a "wet" system. Although I now think ultrasonic might be the wrong choice of frequency, perhaps a lower frequency would work better, this idea is meant to replace those "turbo head brushes" which over time must damage carpet?-- Micky Dread, Apr 28 2003 halfbakery