| CPC B60R 21/23138 (2013.01) [B60R 2021/23107 (2013.01); B60R 2021/23146 (2013.01); B60R 2021/23386 (2013.01)] | 9 Claims |

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1. An airbag device, comprising:
a first chamber configured to be deployed in a first shape that surrounds a first side and a front side of a seat, the first chamber being included in a first airbag module embedded at first side of a seatback;
a second chamber configured to be deployed in a second shape that surrounds a second side and the front side of the seat and fastened to the first chamber at a first portion at which the second chamber overlaps the first chamber, the second chamber being included in a second airbag module embedded at a second side of the seatback;
first and second inflators respectively included in the first airbag module and second airbag module;
first and second inflator studs affixed to respective ones of the first and second inflators, the first and second inflator studs being mounted on a first side and a second side of a seatback frame embedded in the seatback, respectively;
a first side tether connected to a second portion, the second portion being an inner surface of the first chamber, and the first inflator stud; and
a second side tether connected to a third portion, the third portion being an inner surface of the second chamber, and the second inflator stud,
wherein the first side tether comprises a first main side tether and a first sub-side tether,
wherein the first main side tether is connected between the seatback and the first chamber,
wherein the first sub-side tether is connected between the main side tether and the first chamber, and
wherein the first sub-side tether is connected to a first connection point of the first chamber different from a second connection point of the first chamber to which the first main side tether is connected.
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