US Patent 8246695 Artificial foot

An artificial foot has a connecting part for a lower leg part, and a base foot part rotatably connected to the connecting part via an ankle joint. The base foot part extends rearwards of the ankle joint in a heel section and forwards of the ankle joint in a midfoot section. A forefoot part is rotatably connected to the midfoot section. In order to allow an automatic adaptation of the foot to varying heel heights while ensuring a good stability, an articulated connection transmits the angular position of the connecting part in relation to the base foot part in a proportional manner to the angular position of the forefoot part in relation to the base foot part.