A maneuverable device for transporting a load over a surface, which finds particular application in a hospital bed for the transportation of patients and in a wheelchair for transporting patients or passengers in an air terminal, for example. The device has a platform for supporting a load to be transported...http://www.google.fr/patents/US20070245488?utm_source=gb-gplus-shareBrevet US20070245488 - Maneuverable Device for Transporting Loads Over a Surface
Maneuverable Device for Transporting Loads Over a Surface
