Patent ID: 8990985
Filing Date: 2015-03-31
Classification: A47C,B29C,B60N

Abstract:
1. An insert molding process for fabricating an energy attenuating composite foam seat cushion made of an elastic foam molded portion and a viscoelastic energy attenuating foam insert portion, comprising: positioning the viscoelastic energy attenuating foam insert portion on a flat surface, the insert having an array of vertical passages extending there-through; placing a female mold of the seat cushion over the viscoelastic energy attenuating foam insert portion, and sealing the mold against the flat surface outside a perimeter edge of the foam insert portion, thereby defining a cavity bounded by the mold, the flat surface, and the viscoelastic energy attenuating foam insert portion; and injecting a liquefied elastic foam into the cavity, thereby filling the cavity and the vertical passages in the insert with the elastic foam.