Method to form soles with a heel and an under-heel, mainly for women footwear, with an incorporated supporting core, or reinforcement, and shaped and reinforced soles obtained by said method

Claim 1

A method of manufacturing a sole and heel construction for footwear by the use of a mold having sole and heel forming cavities, comprising the steps of: inletting a determined quantity of a pre-polymerized fluid polymeric compound into said heel forming cavity; preforming an assembly of a reinforcing member heel core and an under-heel attached to said heel-core, said under-heel having a peripheral contour substantially complementary to the cross-section of a terminal end of said heel cavity, and being of lateral dimensions greater than the cross-section of said heel core at the end thereof adjacent said under-heel, said under-heel having channels extending between its face proximate said heel core and the opposite face of said under-heel, said channels being located outwardly of the periphery of said heel core; directionally guiding and positioning said assembly into said mold to insert said heel core and under-heel into said heel forming cavity and to insert said stiffener into said sole forming cavity; employing said under-heel as a piston to displace said fluid compound, at least in part, through said channels in said under-heel and into filling relationship with said heel and sole forming cavities, and thus into encapsulating relationship with said stiffener, heel core and under-heel assembly; and, polymerizing said polymeric compound.

Claim 2

A method of manufacturing a sole and heel construction for footwear by the use of a mold having sole and heel forming cavities, comprising the steps of: inletting a determined quantity of a pre-polymerized fluid polymeric compound into said heel forming cavity; preforming an assembly of a reinforcing member heel core and an under-heel attached to said heel-core, said under-heel having a peripheral contour substantially complementary to the cross-section of a terminal end of said heel cavity, and being of lateral dimensions greater than the cross-section of said heel core at the end thereof adjacent said under-heel, said under-heel having channels extending between its face proximate said heel core and the opposite face of said under-heel, said channels being located outwardly of the periphery of said heel core; directionally guiding and positioning said assembly into said mold to insert said heel core and under-heel into said heel forming cavity and to insert said stiffener into said sole forming cavity; employing said under-heel as a piston to displace said fluid compound, at least in part, through said channels in said under-heel and into filling relationship with said heel and sole forming cavities, and thus into encapsulating relationship with said stiffener, heel core and under-heel assembly; and, polymerizing said polymeric compound.