| | Air Bed System with Diaphragm Pump - ComfortAire - AirBed - Air Mattress - AirBed - Sleeper Mattress - Mattress - ... (Site not responding. Last check: 2007-11-01) |
 | | Whereas air flow from the prior art impeller pumps automatically decreases as pressure within the air mattress is increased, such is not the case with the Walker diaphragm pumps; and, absent some sort of safety release valve, there was a danger of overinflation and destruction of the air mattress. |
 | | Conversely, as air is allowed to exhaust from wedge 318 (by means of controller 22), the air wedge 318, and the head portion 314 of mattress 312, is caused to move downwardly until the head portion 314 is substantially parallel to the foot portion 316. |
 | | Thus, depending upon the amount of air which is caused to enter air wedge 318, a substantially infinite number of positions between the horizontal position of head portion 314 (when it rests on foundation 12) and the vertical position of head portion 314 (when it is substantially perpendicular to foot portion 316) are attainable. |
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