| CPC A47C 21/044 (2013.01) [A47C 19/025 (2013.01); A47C 20/041 (2013.01); A47C 21/048 (2013.01); A47C 27/14 (2013.01); A47C 31/008 (2013.01)] | 20 Claims | 

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               1. An assembly comprising: 
            an adjustable frame including an articulatable frame support and an actuator mounted to the articulatable frame support to adjust the position of the adjustable frame; 
                a support platform connected to the frame support to articulate with the frame support, the support platform having a bottom surface facing the frame and a top surface facing opposite the bottom surface, the bottom surface having a peripheral edge; 
                a cover supported on the support platform and being flexible relative to the support platform; 
                the cover covering the top surface of the support platform and extending downwardly from the top surface of the support platform and inwardly around the peripheral edge of the bottom surface of the support platform; 
                the cover including an airflow spacer having a bottom surface facing the support platform and a top surface opposite the bottom surface of the airflow spacer, the cover designed to allow airflow therethrough with airflow entering the cover through the top surface of the airflow spacer and the bottom surface of the airflow spacer and exiting the cover through the top surface of the airflow spacer and the bottom surface of the airflow spacer; 
                the cover being 1 mm-10 mm thick between the bottom surface of the airflow spacer and the top surface of the airflow spacer. 
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