Patent ID: 7264601

Claim:
A spine massager comprising: a master air bladder, said master air bladder having a top side, an air chamber defined under said top side, and a valve hole for guiding in air to inflate the air chamber of said master air bladder; a first supplementary air bladder provided at the top side of said master air bladder, said first supplementary air bladder having an air chamber and a valve hole for guiding in air to inflate the air chamber of said first supplementary air bladder; a second supplementary air bladder provided at the top side of said master air bladder and at one lateral side of said first supplementary air bladder, said second supplementary air bladder having an air chamber and a valve hole for guiding in air to inflate the air chamber of said second supplementary air bladder; and a pressure control means connected to the valve hole of said master air bladder and the valve hole of said first supplementary air bladder and the valve hole of said second supplementary air bladder and connectable to an external air pump for guiding in compressed air to said master air bladder and said first supplementary air bladder and said second supplementary air bladder and adapted to alternatively inflate and exhaust said first supplementary air bladder and said second supplementary air bladder after said master air bladder has been inflated to a saturated status, said pressure control means comprising a first pressure switch means and a second pressure switch means, said first pressure switch means comprising a first switching port connected to the valve hole of said master air bladder, a second switching port connected to said second pressure switch means, and a third switching port connectable to an external air pump, said second pressure switch means comprising a first switching port connected to the valve hole of said first supplementary air bladder, a second switching port connected to the valve hole of said second supplementary air bladder, a third switching port connected to the second switching port of said first pressure switch means, and a fourth switching port connected to the atmosphere.