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    • 5. 发明授权
    • Duct liners
    • 管道衬管
    • US6148867A
    • 2000-11-21
    • US293469
    • 1999-04-09
    • Kent R. MatthewsEric G. Schakel
    • Kent R. MatthewsEric G. Schakel
    • E04F17/04B32B3/30F16L59/02F16L59/10F16L59/14F16L59/147F24F13/02F16L9/14B32B3/28
    • F24F13/0263B32B3/30F16L59/02F16L59/14F16L59/147F24F13/0245F24F13/0281Y10T29/49435Y10T29/49623
    • Ducts are formed from rigid or semi-rigid insulation boards by forming a plurality of longitudinally extending, spaced apart, parallel kerfs in a first major surface of each of the insulation boards which is adapted to be the interior surface of the duct. When the insulation board is formed into a duct of the preselected dimensions, the shoulders of the kerfs adjoining the interior surface of the duct abut and, preferably, the insulation material in the shoulders of the kerfs is compressed. The flexibility of the insulation boards, in the direction of the widths of the insulation boards, is controlled by increasing the depths and/or the widths of the kerfs and/or decreasing the spacing between the kerfs to make the insulation board more flexible and by decreasing the depths and/or the widths of the kerfs and/or increasing the spacing between the kerfs to make the insulation board less flexible.
    • 管道由刚性或半刚性绝缘板形成,其在每个绝缘板的第一主表面上形成多个纵向延伸的,间隔开的平行切口,适于作为管道的内表面。 当绝缘板形成为预定尺寸的管道时,与管道内表面相邻的切口的肩部邻接,并且优选地,切口的肩部中的绝缘材料被压缩。 通过增加切口的深度和/或宽度和/或减小切口之间的间距来控制绝缘板在绝缘板宽度方向上的灵活性,从而使绝缘板更加柔性,并通过 减少切口的深度和/或宽度和/或增加切口之间的间隔,以使绝缘板较不灵活。