Patent 7222710 was granted and assigned to Konica on May, 2007 by the United States Patent and Trademark Office.
A load conveyance device composed of:a load supporting device having a through hole passing in a gravity direction, anda fluid supplying device to supply a fluid into the through hole,wherein when load is dropped into the through hole from a top of the through hole, the load is supported under a floating condition by a force of the fluid in the through hole, and when the load is not supported by change of the force of the fluid, the load is dropped from a lower end of the through hole to an outside.