Foam barrier heat shield
First Claim
1. A combination comprising an automobile body panel having a heat shield fastened or mounted to said body panel, said heat shield comprising a first metallic outer layer, a second metallic outer layer, and a foam layer disposed in between said first and second metallic outer layers, said foam layer being deformable to accommodate a particular shape and contour to which the heat shield is to be bent and to generally conform in use without substantially damaging the cellular structure of the foam as a result of such deformation, said foam layer being effective to withstand operative heat shield temperatures of at least 1000°
- F., and to dampen acoustic tonal frequencies below 2000 Hz.
2 Assignments
0 Petitions
Accused Products
Abstract
A foam barrier heat shield is provided having a layer of foam adhesively disposed between opposing first and second metallic outer layers. The foam is expanded in between the outer layers and is adhesively formed to the outer layers without the use of a separate adhesive. In addition to shielding heat, the heat shield is effective as a noise barrier and is internally damped against vibration. In a preferred embodiment, the foam is a substantially rigid polyurethane foam that is sufficiently pliant to be bent to and accommodate a particular shape and contour to which the heat shield will conform in use, and it is reversibly deformable acoustical deflections.
-
Citations
27 Claims
-
1. A combination comprising an automobile body panel having a heat shield fastened or mounted to said body panel, said heat shield comprising a first metallic outer layer, a second metallic outer layer, and a foam layer disposed in between said first and second metallic outer layers, said foam layer being deformable to accommodate a particular shape and contour to which the heat shield is to be bent and to generally conform in use without substantially damaging the cellular structure of the foam as a result of such deformation, said foam layer being effective to withstand operative heat shield temperatures of at least 1000°
- F., and to dampen acoustic tonal frequencies below 2000 Hz.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
Specification