A double bed arrangement having a combination mattress including a liquid filled side and a non-liquid filled cushion side. A compressible foam tray holds the non-liquid cushion side in a first portion or half of the tray with the liquid-filled cushion being located in a second portion or half of the...http://www.google.co.uk/patents/US5259079?utm_source=gb-gplus-sharePatent US5259079 - Double bed arrangement with combination mattress
