A device for adjusting the seat depth of a motor vehicle seat includes a base element to be arranged in a manner fixed on the seat framework, a supporting element which is mounted in a longitudinally movable manner on the base element and is intended for supporting a seat user and guide device by means...http://www.google.sh/patents/US7938488?utm_source=gb-gplus-sharePatent US7938488 - Device for adjusting the depth of a seat for a motor vehicle seat