A heeling apparatus includes a shoe with a unique feature in the heel that allows one to walk, run, or roll seamlessly. The appearance is that of normal footwear because of the covert wheel assembly. The stealth wheel in the heel gives one the ability to roll or slide in areas you could only walk. Heeling...http://www.google.fr/patents/US6746026?utm_source=gb-gplus-shareBrevet US6746026 - Heeling apparatus and method
