Bed covers which replace conventional sheets, spreads, comforters and the like and include a sheetlike component detachably fixed to a coverlet component as by Velcro or other fasteners or by buttons. A pocket for a blanket can be provided so that the same covering can be used in both warmer and cooler...http://www.google.no/patents/US5070561?utm_source=gb-gplus-sharePatent US5070561 - Bed clothes
