초록 ▼

A foot-support element such as an insole or a part of an insole is provided with a checkvalve through which it can be selectively inflated, the top and bottom walls of the insole being bridged by partitions which retain the shape upon pressurization. The insole is formed with upper and lower parts i

A foot-support element such as an insole or a part of an insole is provided with a checkvalve through which it can be selectively inflated, the top and bottom walls of the insole being bridged by partitions which retain the shape upon pressurization. The insole is formed with upper and lower parts in upper and lower die members working together with an intermediate die member which, upon removal, allows the upper and lower die members to be brought together to fuse the parts of the insole together.

대표청구항 ▼

A foot support for a shoe, comprising an element adapted to be received in a shoe and composed of an elastically deformable material with a bottom wall, a top wall and a sidewall extending generally around a perimeter of said element and connecting said top and bottom walls together, said element be

A foot support for a shoe, comprising an element adapted to be received in a shoe and composed of an elastically deformable material with a bottom wall, a top wall and a sidewall extending generally around a perimeter of said element and connecting said top and bottom walls together, said element being formed with a multiplicity of hollow projections extending from one of said top and bottom walls to the other of said top and bottom walls, molded unitarily with said one of said walls, closed at ends remote from said one of said top and bottom walls, and bonded by molding onto said other of said top and bottom walls, said other wall having a generally flat surface located across a full thickness for the foot support from said one wall and at which said closed ends of said projections are bonded to said other wall whereby said projections each extends said full thickness between the top and bottom walls, said hollow projections opening at a surface of said one of said walls turned away from said other of said walls, said walls defining within said element and around said projections at least one chamber, one of said walls being formed with a checkvalve enabling introduction of air under pressure into said chamber to support said top wall against a load applied by a foot with a variable resilience determined by air pressure in said chamber.