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1. (WO2017155776) MULTI-LAYERED IMPERMEABLE FABRIC FOR USE IN POCKETED SPRING ASSEMBLY

Pub. No.:    WO/2017/155776    International Application No.:    PCT/US2017/020365
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: A47C 27/06
A47C 21/04
A47C 23/04
A47C 27/20
B68G 9/00
Applicants: L&P PROPERTY MANAGEMENT COMPANY
Inventors: LONG, Austin, G.
Title: MULTI-LAYERED IMPERMEABLE FABRIC FOR USE IN POCKETED SPRING ASSEMBLY
Abstract:
A pocketed spring assembly (12, 12a, 12', 12d, 12e, 12f, 12g) comprises a plurality of parallel strings (26, 26a) of individually pocketed springs (28). Each string (26, 26a) is joined to at least one adjacent string (26, 26a). Each string (26, 26a) has first and second opposed plies (48, 50) of fabric and a plurality of pockets (38) formed along a length of the string (26, 26a) by transverse segmented seams (54) joining the plies (48, 50). Gaps (66, 70) between the segments (64, 68) of the seams (52, 54) allow air to pass into and out of the pockets (38) despite the fabric being impermeable to airflow through the fabric. The size of the gaps (66, 70) determines the firmness or "feel" of the pocketed spring assembly (12, 12a, 12', 12d, 12e, 12f, 12g) or portion thereof.