Composite shoe sole
A composite shoe sole, composed of an upper layer and a lower layer, wherein the upper layer is integrally formed of a soft material and the lower layer is integrally formed of a hard material, the lower layer being formed with a notch at a location corresponding to a right side of thenar, or right-side region of phalanx, the upper layer being formed with a projection at a location corresponding to the notch, such that the upper layer and lower layer are joined to each other by means of engagement between the projection and notch to form a shoe sole having a soft upper layer with elastic and shock-absorbing effects for relieving foot pressure, and a hard lower layer for providing upward support to the soft upper layer so as to prevent cave-in, thereby providing good bottom support, elastic air cushioning and shock-absorbing effects.
1. A composite shoe sole with elastic and shock-absorbing effects for relieving foot pressure, said shoe sole having an upper layer formed of relatively soft material and a lower area formed of relatively hard material and each of said layers formed with rippling regions including a caved heel, a raised arch and a planar thenar to thereby provide ergonomic curvature, and said lower layer formed with a single recess in the general form of an inverted frustum of a pyramid and said upper layer formed with a single downward projection in the general form of an inverted frustum of a pyramid corresponding to the single recess and means for adhesively engaging said recess and said projection such that said upper layer and said lower layer are joined to each other and wherein said recess in said lower layer is formed at a location corresponding to a right side of thenar, or right side region of a phalanx.