FIELD: device for supporting at least part of foot and for accumulating and returning of energy.
SUBSTANCE: sole structure has layer of elastic material with first surface on its first side and second surface on its second side opposed to first side, profiled part arranged at first side of elastic layer, and layer of inelastic material arranged on second side of elastic layer. Layer of inelastic material has first chamber sized and configured in conformance to profiled part. Profiled part and first chamber move toward one another and profiled part is inserted into first chamber and thereby extending elastic layer into first chamber. Sole has at least one plunger arranged on second side of elastic layer inside first chamber. Profiled part has at least one second chamber for receiving at least one plunger. Upon application of compressive force to supporting structure, plunger and second chamber move toward one another and plunger is inserted into second chamber thereby extending elastic layer into second chamber.
EFFECT: increased efficiency in accumulating of kinetic energy upon application of compressive force and releasing this energy upon releasing of said force.
29 cl, 8 dwg, 7 tbl
