초록 ▼

A multi-component heat shield is provided. The shield includes at least one heat insulating component and at least one heat reflecting component having different coefficients of thermal expansion. The insulating and reflecting components are arranged with at least a portion of one of the insulating

A multi-component heat shield is provided. The shield includes at least one heat insulating component and at least one heat reflecting component having different coefficients of thermal expansion. The insulating and reflecting components are arranged with at least a portion of one of the insulating component\s surfaces in registration with at least a portion of one of the reflecting component\s surfaces. Movement of the components relative to one another is restricted at selected positions while the movement of the components is unrestrained between these positions. As heat is applied to the shield, the component with the greater coefficient of thermal expansion tends to expand at a greater rate than the component having the lower coefficient of thermal expansion. The stress which develops in the shield due to the restriction of the components at the selected positions is accompanied by changes in the spacing between the components.

대표청구항 ▼

A multi-component heat shield comprising: a first infrared reflecting component having a first surface, a second heat insulating component having a second surface and an opposite surface, said first component having a first coefficient of thermal expansion and said second component having a second c

A multi-component heat shield comprising: a first infrared reflecting component having a first surface, a second heat insulating component having a second surface and an opposite surface, said first component having a first coefficient of thermal expansion and said second component having a second coefficient of thermal expansion, one of said first and second coefficients of thermal expansion being higher than the other so that said component having the higher coefficient of thermal expansion expands and contracts at a greater rate than said component having the lower coefficient of thermal expansion in response to changes in the temperatures of said first and second components, said first and second components being arranged so that at least a portion of said first surface is in registration with at least a portion of said second surface over a common area having a perimeter, and means for restraining said first and second components against movement relative to one another at selected positions, the movement of said first and second components being unrestrained between said selected positions so that the differences in the lengths of said first and second components between said selected positions due to changes in the temperatures of said first and second components and their different rates of thermal expansion are accompanied by changes in the spacing between said first and second surfaces.