Patent ID: 6285525
Filing Date: 2001-09-04
Classification: B32B,F16F,G11B

Abstract:
A spacer article comprising(a) a substrate, the substrate comprising(i) a base having two major opposing surfaces, an upper surface and a lower surface, and(ii) at least one first protrusion joined to the upper surface of the base, each first protrusion having a height; and(b) a first constrained layer damper attached to the upper surface of the base,wherein the first constrained layer damper has a height such that it ranges from about 90 to about 300 percent of the height of the first protrusion having a greatest height on the upper surface of the base;wherein the first constrained layer damper independently comprises:(i) a constraining layer;(ii) a layer of vibration damping material bonded to the constraining layer, wherein the vibration damping material comprises viscoelastic material;wherein the storage modulus of the constraining layer is greater than that of the viscoelastic material in the vibration damping material;wherein the first constrained layer damper is attached to the base via its vibration damping material layer; andwherein the spacer article has a through hole therein.