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US 5,957,485 AGranted
Dual air bag structure with an elastomer inner air bag and a method of forming thereof
AssigneeTakata Corporation
InventorKinji Hirai
Life of this patent
Estimating the term…
Abstract
An air bag structure includes an outer air bag having an internal cavity and an inlet portion. An inner air bag with an inlet portion is disposed within the internal cavity of the outer air bag so that the inlet of the outer air bag and the inlet of the inner air bag are fastened to a vehicle structure at a common point. The inner air bag is a monolithic member with at least one gas flow control device.
Claims22
An air bag for a vehicle, said air bag comprising:
- an outer air bag having an internal cavity;
- an inner air bag being disposed within said internal cavity, said inner air bag including a first portion, a second portion and an air-tight seam between said first portion and said second portion;
- and
- at least one device for controlling inflation gas flow between said inner and said outer air bags;
- wherein said at least one inflation gas flow control device comprises a discontinuity in said airtight seam.
2 more elements
A method of forming an air bag, said method comprising the steps of:
- molding a first thermoplastic panel and a second thermoplastic panel;
- connecting said first thermoplastic panel to said second thermoplastic panel by a thermoplastic edge to generally define an inner cavity;
- providing at least one inflation gas flow control device along the thermoplastic edge;
- and
- disposing said first and second thermoplastic panels connected by said thermoplastic edge in an outer air bag;
- wherein said inflation gas flow control device directs a gas flow from said inner cavity for inflating said outer air bag.
3 more elements
Dependencies are inferred from the claim text.