Patent ID: 8307568
Filing Date: 2012-11-13
Classification: A43B

Abstract:
1. A protective boot comprising: an upper having a multilayer leg, a multilayer vamp, a multilayer toe cap and a multilayer back reinforcement; a foxing; and a multilayer sole; wherein the protective boot has at least one layer in the upper, the sole and the foxing of a flame-resistant rubber blend containing natural rubber, neoprene rubber and nitrile rubber; at least one layer in each of the upper, the foxing and the sole of an electric shock resistant rubber blend containing a synthetic rubber which has an electrical resistance sufficient to insulate to a minimum of 18 Kilovolts; and at least one layer in each of the vamp and the leg of a para-aramid synthetic fibre at least one internal layer in each of the vamp and leg of polyamide tricot, and at least one layer in each of the vamp and the leg of a rubber blend containing natural rubber, neoprene rubber and nitrile rubber; wherein the vamp further comprises: an innermost first vamp layer containing a para-aramid synthetic fibre; a second vamp layer containing polyamide tricot engaging the first vamp layer; a third vamp layer of polyamide tricot engaging the second vamp layer; a fourth vamp layer of rubber engaging the third vamp layer; a fifth vamp layer of rubber engaging the fourth vamp layer; a sixth vamp layer of rubber engaging the fifth vamp layer; and a outermost seventh vamp layer of rubber engaging the sixth vamp layer; and wherein the leg further comprises: an innermost first leg layer containing a para-aramid synthetic fibre; a second leg layer of polyamide tricot engaging the first leg layer; a third leg layer of rubber and polyester textile engaging the second leg layer; a fourth leg layer of rubber engaging the third leg layer; a fifth leg layer of rubber engaging the fourth leg layer; a sixth leg layer of polyamide tricot engaging the fifth leg layer; a seventh leg layer of rubber engaging the sixth leg layer; and an outermost eighth leg layer of rubber engaging the seventh leg layer; and wherein the sole further comprises: an innermost first sole layer containing rubber; a second sole layer of rubber and steel engaging the first sole layer, wherein the second sole layer is positioned below the entire expanse of the vamp; a third sole layer of rubber engaging the second sole layer; a fourth sole layer of rubber, engaging the third sole layer; and fifth, sixth, seventh, eighth, and ninth layers of rubber, each engaging the previous sole layer.