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    • 40. 发明授权
    • MANUFACTURE OF POCKET SPRING ASSEMBLIES
    • 口袋弹簧生产结构
    • EP1042217B1
    • 2003-03-12
    • EP98962161.0
    • 1998-12-22
    • Furniture Row Technologies, LLC
    • Zysman, Milton
    • B68G9/00
    • A47C27/064B68G9/00
    • In the production of a pocket spring assembly, fabric is secured along multiple parallel seam zones so as to form a quilt defining a plurality of parallel fabric tubes connected to each other at uniformly space intervals. The tubes so formed are supported on guides extending longitudinally through the tubes, portions of the quilt are repeatedly drawn from the guides at their one ends and folds formed in each layer of fabric in the drawn off portions of the quilt, and precompressed coil springs are released into the pockets between each drawing of the quilt, with their axes perpendicular to both the axes of the fabric tubes and the direction of advancement of the quilt, so that secured folds in the fabric of the tubes in front of and behind the released springs retain them in the pockets. The quilt is formed in situ on the guides, preferably using a separate web of fabric for each tube. The connections (8A) between the tubes preferably have a span perpendicular to the plane of the quilt which is similar to the span of the connections (16) of the folds. The connections between the tubes and the connections of the folds are preferably thermal welds.