A sole of a baseball spiked shoe has a toe portion projection, a first metatarsal head projection, a stepping portion projection, and a fifth metatarsal head projection provided at a fore foot portion at the bottom plane of the shoe sole, and a heel medial projection, a heel anterior projection, a heel...http://www.google.es/patents/US6182381?utm_source=gb-gplus-sharePatente US6182381 - Sole of baseball spiked shoe and method of measuring shearing stress distribution of baseball spiked shoe
Sole of baseball spiked shoe and method of measuring shearing stress ...
