A bed with a bed cushion has a bed cushion surface integrally formed by emulsion. The surface of the emulsion bed cushion surface having a plurality of wind trenches. Each wind trench has a plurality of vents for venting air. The bed cushion surface being elastic; one lateral side of the bed cushion...http://www.google.com/patents/US6904629?utm_source=gb-gplus-sharePatent US6904629 - Bed with function of ventilation
