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US 5,690,358 AGranted
Airbag, process for folding same, and apparatus for carrying out the folding process
AssigneePetri AG
InventorThomas Marotzke
Life of this patent
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AssigneePetri AG
InventorThomas Marotzke
Estimating the term…
An airbag, a process for folding same and an apparatus for carrying out the folding process are disclosed. In order to produce a folded airbag as well as a process and apparatus for manufacturing same which ensure that the airbag can unfold very quickly without obstruction evenly where possible in all directions when the associated gas generator is activated, the airbag has main fold lines which run at least in part along closed tracks around an imaginary center on the substantially empty spread-out airbag. The corresponding process ensures such a path of the main fold lines and the apparatus according to the invention has folding elements which are movable relative to each other and which have projections directed towards each other in the direction of movement wherein each projection or group of projections defines a closed track running round a center wherein tracks extending from inside to outside are provided at increasing distance from the center.
A folded airbag of the type made from a flexible material and which can be used with an inflation device for rapidly filling the airbag with gas, the airbag comprising, when substantially empty and spread out, main fold lines and at least one of said main fold lines forming a closed track around an imaginary center of the substantially empty and spread-out airbag, the folded airbag further comprising at least one circumferential layer when folded.
A folded airbag of the type made from a flexible material and which can be used with an inflation device for rapidly filling the airbag with gas, the airbag comprising, when substantially empty and spread out, main fold lines and at least one of said main fold lines forming a closed track around an imaginary center of the substantially empty and spread-out airbag, in which the at least one of said main fold lines forms an ellipse of slight eccentricity.
An airbag module comprising a folded airbag made of a substantially flexible material and having an inflation opening and a gas generator attached to the airbag at the inflation opening, the airbag being folded so as to form at least one circumferential layer when folded and at least one main fold line along a closed track, both the at least one circumferential layer and closed track extending around an imaginary point on the airbag.
An airbag module comprising a folded airbag made of a substantially flexible material and having an inflation opening and a gas generator attached to the airbag at the inflation opening, the airbag being folded so that it has at least one circumferential layer when folded and one fold line that forms a substantially closed track, both the at least one circumferential layer and the closed track extending around an imaginary point on the airbag.
An improved folded airbag of the type consisting of a flexible material and which can be used with an inflation device for rapidly filling the airbag with gas, characterized in that the airbag comprises a plurality of circumferential layers when folded and a fold line for each of said circumferential layers which forms a closed track.
A folded airbag of the type made from a flexible material and which can be used with an inflation device for rapidly filling the airbag with gas, the airbag comprising, when substantially empty and spread out, main fold lines and at least one of said main fold lines forming a closed track around an imaginary center of the substantially empty and spread-out airbag, the folded airbag further comprising, when folded, a plurality of circumferential layers each comprising at least one of said main fold lines an extremity forming a closed line around the imaginary center.
Dependencies are inferred from the claim text.