Gas bag for a vehicular occupant restraint system

Claim 2

A gas bag for a vehicular occupant restraint system comprising two plies of fabric partially interwoven along their outer edges, wherein: said plies of fabric are substantially air-tight; the volume of the gas bag is divided by partial interweaving of said plies of fabric within said outer edges, thereby forming a plurality of chambers; remaining portions of the interwoven plies of fabric defining between them at least one choked port interconnecting said chambers; a first part of said chambers being directly inflatable by an inflator, and a second part of said chambers being indirectly inflatable via said choked port; within at least one of said chambers said plies of fabric are interwoven along at least one portion in the form of a closed ring defining an opening for insertion of a fastener means through said opening.

Claim 3

A gas bag for a vehicular occupant restraint system comprising two plies of fabric partially interwoven along their outer edges, wherein: said plies of fabric are substantially air-tight; the volume of the gas bag is divided by partial interweaving of said plies of fabric within said outer edges, thereby forming a plurality of chambers; remaining portions of the interwoven plies of fabric defining between them at least one choked port interconnecting said chambers; a first part of said chambers being directly inflatable by an inflator, and a second part of said chambers being indirectly inflatable via said choked port; the gas bag further having the following features: an elongated shape corresponding to the shape of the side windows of a car between the A and C pillars with an upper curved edge and a lower substantially straight edge; an elongated main chamber defined between said upper edge and said lower edge; a first chamber defined in the rear portion of the gas bag by a hem emanating from said lower edge and extending up to roughly half height of the gas bag and having a choked port to said main chamber; a second chamber defined in the front portion of the gas bag by a hem emanating from said lower edge and extending up to roughly a third of the height of the gas bag and having a choked port to said main chamber; and a third chamber defined in the front portion of the gas bag between said upper edge and a hem, said third chamber having a choked port to said main chamber, said third chamber having generally the shape of an elongated triangle.

Claim 4

A gas bag for a vehicular occupant restraint system comprising two plies of fabric partially interwoven along their outer edges, wherein: said plies of fabric are substantially air-tight; the volume of the gas bag is divided by partial interweaving of said plies of fabric within said outer edges, thereby forming a plurality of chambers; remaining portions of the interwoven plies of fabric defining between them at least one choked port interconnecting said chambers; a first part of said chambers being directly inflatable by an inflator, and a second part of said chambers being indirectly inflatable via said choked port; the gas bag further having the following features: an elongated shape corresponding to the shape of the side windows of a car between the A and C pillars with an upper curved edge and a lower substantially straight edge; an elongated main chamber defined between said upper edge and said lower edge; a first chamber defined in the rear portion of the gas bag by a hem emanating from said lower edge and extending up to roughly half height of the gas bag and having a choked port to said main chamber; a second chamber defined in the front portion of the gas bag by a hem emanating from said lower edge and extending up to roughly a third of the height of the gas bag and having a choked port to said main chamber; and a third chamber defined in the front portion of the gas bag between said upper edge and a hem, said third chamber having a choked port to said main chamber, said third chamber having generally the shape of an elongated triangle.

Claim 5

A gas bag for a vehicular occupant restraint system comprising two plies of fabric partially interwoven along their outer edges, wherein: said plies of fabric are substantially air-tight; the volume of the gas bag is divided by partial interweaving of said plies of fabric within said outer edges, thereby forming a plurality of chambers; remaining portions of the interwoven plies of fabric defining between them at least one choked port interconnecting said chambers; a first part of said chambers being directly inflatable by an inflator, and a second part of said chambers being indirectly inflatable via said choked port; the gas bag further comprises an annular chamber extending along a complete outer circumference of said plies of fabric and has a substantially constant cross section; said annular chamber being interconnected with an internal chamber by choked ports being provided in several corner regions of said annular chamber.

Claim 6

A gas bag for a vehicular occupant restraint system comprising two plies of fabric partially interwoven along their outer edges, wherein: said plies of fabric are substantially air-tight; the volume of the gas bag is divided by partial interweaving of said plies of fabric within said outer edges, thereby forming a plurality of chambers; remaining portions of the interwoven plies of fabric defining between them at least one choked port interconnecting said chambers; a first part of said chambers being directly inflatable by an inflator, and a second part of said chambers being indirectly inflatable via said choked port; the gas bag further comprises an annular chamber extending along a complete outer circumference of said plies of fabric and has a substantially constant cross section; said annular chamber being interconnected with an internal chamber by choked ports being provided in several corner regions of said annular chamber.