EP 4142546 A4 20240501 - POCKETED SPRING COMFORT LAYER AND METHOD OF MAKING SAME
Title (en)
POCKETED SPRING COMFORT LAYER AND METHOD OF MAKING SAME
Title (de)
KOMFORTSCHICHT FÜR TASCHENFEDER UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
COUCHE DE CONFORT À RESSORTS ENSACHÉS ET PROCÉDÉ DE FABRICATION ASSOCIÉ
Publication
Application
Priority
- US 202016861586 A 20200429
- US 2021027436 W 20210415
Abstract (en)
[origin: WO2021221917A1] A comfort layer (56e) for a bedding or seating product has slow-acting pockets (95, 101, 105) characterized by the individual mini coil springs (28) of the comfort layer (56e) being pocketed with either semi-impermeable or impermeable fabric. Each weld seam (70e) joining opposed plies (65e, 67e) of fabric around each of the coil springs (28) of the comfort layer (56e) may be segmented, allowing air to flow between the segments (81e, 68e, 70e), thereby increasing the luxury "feel" of the comfort layer (56e). The method of making the comfort layer (56e) includes compressing the mini coil springs (28) and creating pockets (95, 101, 105) with a welding horn and an anvil.
IPC 8 full level
A47C 27/05 (2006.01); A47C 27/06 (2006.01); B21F 27/16 (2006.01); B68G 9/00 (2006.01)
CPC (source: EP)
A47C 27/064 (2013.01); B21F 27/16 (2013.01); B21F 33/04 (2013.01); B68G 9/00 (2013.01)
Citation (search report)
- [X] US 2017283245 A1 20171005 - LONG AUSTIN G [US]
- [XI] CA 3082198 A1 20190503 - STARSPRINGS AB [SE]
- See also references of WO 2021221917A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2021221917 A1 20211104; CN 115916005 A 20230404; CN 115916005 B 20240730; EP 4142546 A1 20230308; EP 4142546 A4 20240501
DOCDB simple family (application)
US 2021027436 W 20210415; CN 202180030829 A 20210415; EP 21796765 A 20210415