Multi-Layered Pocket Spring Strand Assembly
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
May 10, 2022
filing date -
Jun 2, 2021
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Abstract
For forming a multi-layer strand of pocketed springs, a first strand (11) of pocketed springs (21) and a second strand of pocketed springs (22) are connected to each other. For this purpose a first pocketed spring (21) of the first strand (11) is aligned in a coaxial manner with a second pocketed spring (22) of the second strand (12) so that a first seam portion (31) of pocket material at an end of the first pocketed spring (21) overlaps with a second seam portion (32) at an end of the second pocketed spring (22), and the first seam portion (31) is welded to the second seam portion (32), e.g., using ultrasonic welding.
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