Patent 7828304 was granted and assigned to Altair Engineering Inc on November, 2010 by the United States Patent and Trademark Office.
The present invention is an apparatus or device for jacking an individual axle of a truck or a truck trailer having an air line. The device includes a valve in fluid communication with the air line, a first air bag in fluid communication with the valve, and a second air bag in fluid communication with the first air bag.