Patent ID: 7107704

Claim:
A non-spring-back shoe insole comprising cushioning layer structure fully responsible for all cushioning behavior in the insole, structurally limited, with regard to cushioning-action response by it to a load-induced deformation, solely to a non-spring-back response, with said cushioning layer structure having upper and lower surfaces, and being formed throughout of an acceleration-rate-sensitive, viscoelastic, non-springy cushioning material, which, when a force is applied perpendicular to the cushioning layer structure, effectively densifies, thereby preventing total compression of the cushioning layer structure, and a moisture-wicking fabric overlayer joined to said upper surface, which provides (1) a wear surface to protect the longevity of the underlying cushioning layer structure, (2) a low coefficient of sliding friction to minimize friction-induced heat from the foot of the wearer, (3) wicking of moisture to the perimeter of the insole, and (4) load-distributing elements to spread localized load events over an overlayer surface, and wherein said moisture-wicking fabric overlayer cooperates with said cushioning layer structure to enhance shock absorbing characteristics thereof.