A shoe (1, 30, 6) is disclosed in which there is a provided sensing means (16, 45, 66) for transmitting the force of shoe-support surface impact from the bottom of the lower sole (2, 31, 61) to the upper shell (3, 32, 62) and foot as the foot is moved toward the bottom of the lower sole. Means are provided...http://www.google.co.uk/patents/US5311678?utm_source=gb-gplus-sharePatent US5311678 - Shoe shock absorption system
