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    • 8. 发明授权
    • Backfolded pocket mattress
    • 折叠式口袋床垫
    • US09314110B2
    • 2016-04-19
    • US14648923
    • 2013-12-12
    • Stjernfjädrar AB
    • Robert Ahlqvist
    • A47C27/06A47C27/07B68G9/00
    • A47C27/064A47C27/063A47C27/07
    • A pocket mattress includes coil springs arranged as spring units, arranged successively in elongate strings, enclosed in a covering material forming pockets. A plurality of the strings are arranged side by side, the strings including a plurality of transverse seams arranged parallel to the longitudinal direction of the coil springs to separate the pockets. A middle portion of the transverse seams attaches at least a layer of covering material from either side of the spring unit to each other. At least some of the seams are back folded seams, in which the covering material proximate to an end portion of the back folded seams is back folded towards the middle portion of the transverse seams. As such, the back folded transverse seams each have at least one end portion attaching at least twice as many layers of covering material as in a corresponding transverse seam which is not back folded.
    • 口袋床垫包括作为弹簧单元布置的螺旋弹簧,其以细长的串连续布置,封闭在形成口袋的覆盖材料中。 并排设置有多个弦,弦包括平行于螺旋弹簧的纵向方向布置的多个横向接缝,以分离凹穴。 横向接缝的中间部分至少一层覆盖材料从弹簧单元的任一侧彼此连接起来。 至少一些接缝是后折叠的接缝,其中靠近后折叠接缝的端部的覆盖材料朝向横向接缝的中间部分向后折叠。 因此,后折叠的横向接缝各自具有至少一个端部,其附接至不是背部折叠的相应横向接缝中的至少两倍的覆盖材料层。