US 5,336,016 A · Rubber vehicular impact barrier

Abstract

This invention relates to a method of manufacturing a homogeneous solid rubber vehicular barrier, comprising the steps of: mixing and knead melting a mixture of: 80 to 90 percent by weight particles of recycled waste rubber; 10 to 20 percent by weight virgin rubber; and an accelerator composition; forming the mixture in a mould to a selected barrier configuration thus forming a barrier; curing the mixture within the mould at a temperature of 250 .degree. to 450.degree. C. at a pressure of 500 to 1000 psi for a period of time from 1.5 to 7.5 hours; and removing the cured barrier from the mould. A homogeneous moulded solid rubber vehicular barrier, is thereby formed of 80 to 90 percent by weight particles of recycled waste rubber in a matrix of 10 to 20 percent by weight virgin rubber. The completed barrier has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 and 70.

Claims14

Dependent claims

A method of manufacturing a homogeneous solid rubber vehicular barrier, comprising the steps of:

mixing and knead melting a mixture of:
80 to 90 percent by weight particles of recycled waste rubber;
10 to 20 percent by weight virgin rubber;
and an accelerator composition;
forming the mixture in a mould to a selected barrier configuration thus forming a barrier wherein the barrier has an elongate body of uniform cross section, said cross section being substantially trapezoidal having a base, a top surface and two inclined concave side surfaces;
curing the mixture within the mould at a temperature of 250.degree. to 450.degree. C at a pressure of 500 to 1000 psi for a period of time from 1.5 to 7.5 hours wherein said barrier when fully cured has a finished outer surface of cured uncontaminated rubber, and has a Shore hardness of between 65 to 70;
and
removing the cured barrier from the mould.

5 more elements

Dependencies are inferred from the claim text.

Rubber vehicular impact barrier

Life of this patent

Rubber vehicular impact barrier

Life of this patent

Abstract

Claims14