Patent ID: 7997614

Claim:
An airbag device comprising, an airbag inflatable with gas generated by an inflator, the airbag having a front surface base fabric comprising a front surface of the airbag and a back surface base fabric comprising a back surface of the airbag; and a third base fabric that covers at least a portion of the front surface of the airbag and restricts inflation of the airbag during inflation, wherein the airbag has a first vent hole through which gas is discharged, wherein the first vent hole is closed by a first vent hole sewn portion being sewn by a thread to the front surface, back surface, and third base fabrics of the airbag, wherein, while the airbag is in an inflated state, the thread of the first vent hole sewn portion is broken and the first vent hole is opened in response to a pressure increase in the airbag resulting from an object pushing into the third base fabric, wherein the third base fabric extends over the front surface of the airbag from one distal end of the airbag to another distal end of the airbag in a direction which is perpendicular to a direction that extends from the back surface of the airbag to the front surface of the airbag, and wherein one side of the third base fabric is configured to detach from the airbag in response to the object pushing into the third base fabric.