Air mattress and method for adjusting it

Abstract

An air mattress includes an underlay (1) and a number of elongate first elements (2), filled with air and fastened to the bottom part of the mattress parallel to each other and transversally against the lengthwise direction of the mattress. The first mattress elements (2) form upward directed arched structures from their cross-section when inflated with air. The mattress also includes a number of elongate air-inflatable resilient second elements (9), in connection with the first mattress elements (2). Each first element (2) is at least partly around each second element (9) outside the first element. Each first mattress element (2) includes at least one first fastening member arranged in the lengthwise direction of the mattress element and a corresponding second fastening member arranged on the underlay (7). The fastening members are removably attached to each other, so each mattress element is unfastened from the underlay and change another. A method for adjusting an air mattress includes a step of partly filling the mattress elements (2; 9) with air. The mattress pressure corresponds to the surrounding pressure when the mattress elements are not subjected to a weight load, but the mattress pressure grows according to the weight load, so that the mattress elements conform to the contours of the weight load, and simultaneously the surface pressure against the weight load is distributed evenly over the whole weight load, such as a human body or part thereof.