A cushioning sole for use in footwear, in particular athletic shoes, is disclosed. The cushioning sole includes a rearfoot motion control device incorporated into a sole member. The device preferably functions to gradually control pronation motion. The device includes generally vertically extending rigid...http://www.google.com/patents/US5297349?utm_source=gb-gplus-sharePatent US5297349 - Athletic shoe with rearfoot motion control device
