Patent ID: 8286372
Filing Date: 2012-10-16
Classification: A43B,A63B

Abstract:
1. Footwear with accumulation of spring energy, caused by elastic deformation, comprising: a footwear system, comprising: an elastic substantially planar sole portion; an elastic back portion; an intermediate heel portion between said sole and back portions, wherein said sole portion, heel portion and back portion are integrally formed together; and fixation means for securing the position of a user's foot on said sole portion, wherein said fixation means are coupled with said sole portion and with said back portion; wherein said sole and back portions, when not contacted by the user, are independently biased at an initial angle exceeding 90° therebetween so as to form a leaf spring of a predetermined bias selectively operable to provide said elastic deformation, wherein said sole and back portions are arms of said leaf spring; wherein said sole and back portions, when contacted by the user, are selectively operable to be biased by the user of said footwear system to a subsequent angle equal to 90° or less so as to accumulate an amount of spring energy therein.