Abstract: An article of footwear may have an upper and a sole structure secured to the upper. The sole structure has a plurality of support elements, and each of the support elements include a shell and a core. The shell defines an interior void and is formed from a polymer material that extends around substantially all of the void. The core has a shape of the void and is located within the void, with at least a portion of the core being a polymer foam material. The polymer foam material of at least two of the support elements may have different densities.
July 13, 2007
January 15, 2009
Klaas Pieter Hazenberg, Eric S. Schindler
Abstract: A method for making a shoe includes the steps of forming a midsole in an outsole in a first mold, transferring the assembly of the midsole and the outsole into a second mold, and forming an insole between the midsole and an upper in the second mold.
Abstract: A method of manufacturing a shoe, provided with a front region and a heel region. The method comprises the steps of stitching an upper to a piece of fabric in order to obtain an inner shoe which is closed at its lower portion, providing a rubber mid-sole having at least one inner cavity or seat and at least one outer cavity or seat, filling the at least one inner cavity with a lightweight filler, coupling said inner shoe with the mid-sole by a peripheral cover band, vulcanizing and placing one or more inserts in the at least one outer cavity or seat.
Abstract: A process which serves to seal and waterproof the outsole-side end area of a waterproof shoe shaft and/or to pad the outsole-side end of a shoe by putting a liquid, curable, filling material into the space between the insole and outsole is described. The outsole is provided with an input opening for putting in the filling material. The outsole is adhered to the shaft only in a circumferential area and in such a way that the outsole-side end area of the shaft remains unadhered. The liquid filling material is put in through the input opening, between the insole and the outsole, from where it flows into the outsole-side end area of the shaft due to its good flowability. The liquid material contains polyurethane precursor ingredients which react to form a foam polyurethane.