Motor-driven support apparatus for the upholstery of a piece of furniture used to sit on or lie down on, especially for a mattress for a bed. Apparatus includes a first support element having first and second longitudinal rails, and a second supporting element displaceable by a drive. The second support...http://www.google.fr/patents/US20070220677?utm_source=gb-gplus-shareBrevet US20070220677 - Motorized adjustable support apparatus for the upholstery of furniture for lying or sitting, in particular a bed mattress
Motorized adjustable support apparatus for the upholstery of furniture for ...
