초록 ▼

Cold weather footwear includes at least three assemblies: an inner preformed sock comprised of inner and outer fabric layers and an intermediate open cell polyurethane foam layer enabling moisture transmission through the preformed sock; an insole assembly including a first layer formed of a moistur

Cold weather footwear includes at least three assemblies: an inner preformed sock comprised of inner and outer fabric layers and an intermediate open cell polyurethane foam layer enabling moisture transmission through the preformed sock; an insole assembly including a first layer formed of a moisture retaining or accumulating fabic, separable foam and intermediate sheet plastic non-moisture permeable plastic, and an underlying layer of closed cell thermally insulating foam for disposition between the inner sock and the sole of the boot; and a boot having a sole and a shell formed integrally with the boot, the shell being backcoated with a plastic material and coated with a water repellent. The footwear has adequate thermal insulation and moisture vapor transport characteristics, while affording good wind resistance and water repellency.

대표청구항 ▼

Cold weather footwear comprising: an outer boot; a preformed sock disposed in said boot and formed of a material enabling transmission of moisture vapor therethrough; and an insole disposed between said sock and said boot, said insole comprised of a first portion formed to provide a barrier to the t

Cold weather footwear comprising: an outer boot; a preformed sock disposed in said boot and formed of a material enabling transmission of moisture vapor therethrough; and an insole disposed between said sock and said boot, said insole comprised of a first portion formed to provide a barrier to the transmission of moisture vapor and a second portion formed of a moisture retaining non-adsorbent open matrix mesh material overlying said first portion and lying between the latter and said sock, said first portion being formed of a material affording thermal insulation and having an inability to retain, and trap or adsorb moisture and said second portion being formed of a material having the capacity to entrap moisture in its interstices substantially most of which, when frozen, may be released by mechanical action.