Importance

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Abstract

An alternating pressure bed includes first and second sets of closely spaced rollers mounted in a roller frame to be mutually parallel and co-planar along a preferably horizontal plane and each being rotatable about its individual longitudinal axis, and a first drive mechanism for rotating each of the rollers in the first set in a clockwise direction and a second drive mechanism for rotating each of the rollers in the second set in a counter-clockwise direction. A mattress shielding sheet extends across and rests on the rollers, and a mattress extends across and rests on the mattress shielding sheet. Each roller has at least one surface protrusion, so that when the roller is rotated the protrusion applies alternating and varying upward pressure through the mattress.

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First Claim