Patent ID: 7028358

Claim:
A width-adjustable alternating air inflation mattress comprising: a mattress body having a plurality of first tubular air cells, a plurality of second tubular air cells and a plurality of third tubular air cells which are arranged transversally as a mattress unit; and at least one fourth tubular air cell and at least one fifth tubular air cell being added longitudinally at two opposite sides of the mattress unit forming by the first, second and third tubular air cells; a pump having air suction and air outlet for pumping air to any one of the tubular air cells; a first air valve being connected between the mattress body, the pump and a second air valve; the first air valve including a first air inlet, an air supply, an air transfer tube, a first, a second, a third connecting tubes, and a first opening; the first air inlet being connected to the air outlet of the pump; the air supply opening being connected to the air suction; the first connecting tube being connected to the tubular air cells; the second connecting tube being connected to the tubular air cells; the third connecting tube being connected to the tubular air cells; and the first opening being opened; the second air valve being installed between the first air valve and the mattress body for alternatively inflating and evacuating air in the at least one fourth tubular air cell and the at least one fifth tubular air cell; the second air valve including a second air inlet, a second opening, a fourth connecting tube, a fifth connecting tube; the second air inlet being connected to the air transfer tube; the second opening being opened and the connecting tubes being communicable to the tubular air cells, respectively.