US 5,849,379 A · Wrappable sleeve

Abstract

A split sleeve for insulation of heat generating components, such as an exhaust gas recirculation device, comprises an outer layer of knitted woven or braided glass fiber yarn. A first metal wire skeleton or frame in the form of a continuous wire support for the outer layer is bent in a first step with a series of reverse bends to form a comb-like structure and in a second step to a C-shaped cross-sectional configuration in which the wire defines a cavity and the wire bends define an opening extending lengthwise of the cavity. A layer of heat insulating mineral paper is spaced from the cover layer by the metal wire skeleton. The heat insulating mineral paper is provided with a metal foil layer on the side away from the metal wire skeleton. A second metal wire layer configured like the first extends lengthwise of the sleeve and spaces the reflective surface of the foil from the heat generating component. The various layers of the sleeve are secured together to form an axially extending opening which fits over the component requiring insulation.

Claims30

Dependent claims

A split sleeve adapted to be placed in surrounding relationship with a heat generating component, said split sleeve comprising:

an outer cover layer of interlaced heat insulating yarn;
a first metal wire layer comprising a continuous wire support bent in cross-section to a C-shaped configuration, said first metal wire layer defining a cavity having a side opening extending lengthwise of said sleeve and said continuous wire support being longitudinally flexible;
an intermediate layer of a heat insulating material spaced from said outer cover layer by said continuous wire support;
a metal foil layer adjacent to the intermediate layer on the side away from the first wire layer, said foil layer having a reflective surface exposed to said heat generating component;
and
a second metal wire layer extending lengthwise of the sleeve, said second wire layer having a configuration substantially the same as the first wire layer, said second wire layer interfacing with the surface of the foil away from the insulating layer, said second wire layer being adapted to space said reflective surface from the heat generating component, each of said layers having edge portions terminating at the boundaries of said side opening.

3 more elements

Dependencies are inferred from the claim text.

Wrappable sleeve

Life of this patent

Wrappable sleeve

Life of this patent

Abstract

Claims30