Insulated sole for article of footwear

摘要

An insulated sole having down feather insulation held captive therein and method of fabrication is described. The sole is formed with open top end cavities in which there is disposed down feathers r mixtures thereof to capture and retain heat. A membrane seals the open top end of the cavities. The insulated sole is used in the fabrication of articles of footwear for use in cold weather climate to resist to the cold emanating from the ground to shield against heat loss from the wearer's feet.

主权项

1. An insulated sole for an article of footwear, said insulated sole having a ground engaging outer surface and an inner surface, a plurality of cavities formed in said inner surface, and down insulation or a mixture thereof with a material having insulating properties disposed in said cavities, and a membrane disposed over said cavities to trap said down insulation or a mixture thereof in said cavities to provide thermal insulating barrier.