초록 ▼

A composite spring-damper and method of making same. The spring-damper has an exposed fabric layer free of structural foam and curable resin. A core formed of resilient foam defines a spring shape and a fabric layer disposed on an outer surface of the core is attached to foam core by means of the fo

A composite spring-damper and method of making same. The spring-damper has an exposed fabric layer free of structural foam and curable resin. A core formed of resilient foam defines a spring shape and a fabric layer disposed on an outer surface of the core is attached to foam core by means of the foam having substantially filled only interstices of an inner portion of the fabric layer, without substantially penetrating an outer portion of said fabric layer; whereby the fabric layer of the composite spring-damper may thereafter be substantially completely saturated with a curable material for lamination to another structure. An attached reinforcing fabric layer may be provided on the exterior surface of the fabric layer, in which case the fabric layer may be entirely saturated and only the attached fabric layer substantially free of foam.

대표청구항 ▼

[ What is claimed is:] [9.] A method for making a composite spring-damper comprising the steps of:arranging a fabric layer in a configuration constrained against outward movement and defining a spring-shaped cavity between opposing surfaces of said fabric layer;dispensing a predetermined amount of a

[ What is claimed is:] [9.] A method for making a composite spring-damper comprising the steps of:arranging a fabric layer in a configuration constrained against outward movement and defining a spring-shaped cavity between opposing surfaces of said fabric layer;dispensing a predetermined amount of a self-expanding, self-curable, uncured resilient structural foam into said cavity, said foam expanding and curing in said cavity at a molding pressure determined by said predetermined amount of said foam and thereby attaching itself to said fabric layer to form said composite structure, said molding pressure causing said expanding foam to substantially fill only interstices of an inner portion of said fabric layer, without substantially penetrating an outer portion of said fabric layer; and,freeing said cured resilient composite structure from said constraint of said arranging step, said outer portion of said fabric layer of said composite structure being thereafter substantially completely saturable with a curable material for lamination to another structure in a subsequent processing step.