A high-low base including a lower frame member supported upon a floor, an upper frame member, and an elevation assembly for variably elevating the upper frame member in height above the lower frame member, fits completely under, and within the pedestal base, of a conventional contour bed. A motorized...http://www.google.fr/patents/US5490298?utm_source=gb-gplus-shareBrevet US5490298 - Modular high-low-adjustable contour-adjustable bed
Modular high-low-adjustable contour-adjustable bed