# US 8,783,713 B2 · Airbag device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,783,713 B2 - Document ID: US8783713B2 - Status: Granted - Kind: B2 - Application number: 13/990,864 - Filed: 2011-11-29 - Published: 2013-12-12 - Granted: 2014-07-22 - Earliest claimed: 2010-12-03 - Assignees: Autoliv Development AB - Applicants: Nathan Muscat; Gweltaz Jacq - Inventors: Nathan Muscat; Gweltaz Jacq - Web page: https://patentgrep.com/patent/US8783713B2 ## CPC - B60R 21/26: characterised by the inflation fluid source or means to control inflation fluid flow {(arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10)} - B60R 21/20: Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components - B60R 21/217: Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together - B60R 21/276: with means to vent the inflation fluid source, e.g. in case of overpressure {(B60R21/30 takes precedence; venting means on inflatable member walls B60R21/239)} - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract An airbag device with an airbag module (1) for attachment to a structural part of a motor vehicle with a housing (2), an airbag (3) arranged therein, a gas generator (4), as well as a support (5) via which the airbag module (1) can be attached to a motor vehicle component, wherein a fastener (41) is positioned on a gas generator (4) via which the gas generator (4) can be attached to the housing (2) and/or the support (5). On the support (5) and/or on the housing (2) at least one spacer (21, 51) is provided between the housing (2) and the support (5), between the housing (2) and the gas generator (4), and/or between the support (5) and the gas generator (3), in the form of cavities in which a discharge channel (22, 52) is constructed in the plane of the intermediate area formed by the spacers (21, 51). ## Claims ### Claim 1 An airbag device comprising an airbag module for attachment to a structural part of a motor vehicle having a housing, an airbag arranged within the housing, a gas generator, a support outside the housing for attaching the airbag module to the structural part, wherein a flange is positioned on the gas generator via which the gas generator is attached to the housing or the support, wherein the support or the housing forms at least one spacer for creating a cavity in at least one of three locations, the three locations being between the housing and the support, between the housing and the flange, and between the support and the flange, the cavity forming a permanently unobstructed discharge channel for a flow of deployment gas produced by the gas generator. ### Claim 2 (depends on 1) The airbag device according to claim 1, wherein the at least one spacer is constructed as an integral portion of at least one of the support and the housing. ### Claim 3 (depends on 1) The airbag device according to claim 1, wherein pass-through openings for securing means of the housing or the gas generator are formed adjacent to the at least one spacer. ### Claim 4 (depends on 1) The airbag device according to claim 1, wherein the at least one spacer is constructed on a side of the housing or the support turned away from the airbag. ### Claim 5 (depends on 1) The airbag device according to claim 1 further comprising in that the gas generator projects into the housing and the airbag forms an opening through which the gas generator can be introduced into the airbag and which stands in a fluidic connection to the at least one spacer. ### Claim 6 (depends on 1) The airbag device according to claim 1 further comprising in that the discharge channel is oriented in the direction of the gas generator. ### Claim 7 (depends on 1) The airbag device according to claim 1 further comprising in that the support and the housing are constructed of a metal or a plastic. ### Claim 8 (depends on 1) The airbag device according to claim 1 further comprising in that a retainer ring is attached to the housing which secures the airbag to the housing. ### Claim 9 (depends on 1) The airbag device according to claim 1 further comprising that the gas generator forms gas discharge openings which are in communication with the discharge channel. ### Claim 10 (depends on 2) The airbag device according to claim 2 further comprising in that the at least one spacer is in the form of a tab, a flange, a recess, or a bulge. ### Claim 11 (depends on 1) The airbag device according to claim 1 wherein the discharge channel enables the venting of the deployment gas from the gas generator in the case that the airbag module is deployed and the deployment is obstructed by an out-of-position occupant of the motor vehicle, and wherein the deployment gas does not vent in a significant manner through the discharge channel upon the deployment of the airbag module wherein the deployment is not obstructed. ### Claim 12 (depends on 1) The airbag device according to claim 1 wherein the cavity is in the form of a planar gap. ### Claim 13 (depends on 1) The airbag device according to claim 1 wherein the housing, the airbag, and the gas generator are preassembled for attachment to the support as a subassembly. ### Claim 14 (depends on 1) The airbag device according to claim 1 wherein the spacers are located outside the housing.