US 12,221,055 B2
One-piece woven (OPW) pressure-responsive air outlet, in particular for application to airbag discharge openings, as well as an airbag with such an air outlet sewn thereto
Daniel Albiez, Murg (DE)
Assigned to GLOBAL SAFETY TEXTILES GMBH, Bad Säckingen (DE)
Filed by Global Safety Textiles GmbH, Bad Säckingen (DE)
Filed on Sep. 20, 2023, as Appl. No. 18/471,008.
Claims priority of application No. 10 2022 125 347.3 (DE), filed on Sep. 30, 2022.
Prior Publication US 2024/0109508 A1, Apr. 4, 2024
Int. Cl. B60R 21/239 (2006.01); B60R 21/2334 (2011.01); B60R 21/235 (2006.01); D03D 1/02 (2006.01); D03D 11/02 (2006.01); B60R 21/00 (2006.01)
CPC B60R 21/2334 (2013.01) [B60R 21/235 (2013.01); D03D 1/02 (2013.01); D03D 11/02 (2013.01); B60R 2021/23509 (2013.01); B60R 2021/23547 (2013.01); D10B 2505/124 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A one-piece woven (OPW) pressure-responsive air outlet, in particular for use as a vent, for application to airbag discharge openings, said one-piece woven (OPW) pressure-responsive air outlet comprising a lower fabric layer (UG), a middle fabric layer (MG) and an upper fabric layer (OG) wherein:
a) the lower fabric layer (UG) comprises warp and weft threads and an inflow region (ESB) in which the warp and weft threads float,
b) the middle fabric layer (MG) comprises warp and weft threads and a flow-through region (DSB) in which the warp and weft threads float,
c) wherein the lower fabric layer (UG) and the middle fabric layer (MG) substantially include at least a first chamber (K1),
d) wherein
a second chamber (K2) is arranged downstream of the first chamber (K1) in a flow direction,
e) wherein at least one of the chambers (K1, K2) is sealed with a thread breakage zone (FBZ), in which between the fabric layers, selected (warp) threads of one fabric layer are merely tacked to selected (weft) threads of the other fabric layer and are capable of breaking or rupturing at a predefined internal pressure in the chamber.