Process and apparatus for folding an air bag in a spiral shape

Details Process and apparatus for folding an air bag in a spiral shape Process and apparatus for folding an air bag in a spiral shape

1997-12-18

2000-08-08

Johnson, Brian L.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493457, 493250, B31B 144, B31B 152

Patent

active

060994533

ABSTRACT:
In a process and an apparatus for folding a gas bag 15 for a passenger restraint system, a gas bag (15) is introduced, in an uninflated state, to an apparatus that includes a folding tool (12), folding aids (16) and a clamp (19). The folding tool (12) includes a holding plate (1), an intermediate plate (4) with a spiral strip (8) thereon, and a form plate (5) with a spiral slot 10 to accept the spiral strip 8. Prior to a folding process, the gas bag (15) lies on the spiral strip (8), which protrudes through the form plate (5). With help from the folding aids (16), the gas bag is folded into a free space between the protruding strip 8 and the intermediate plate (4). In the process, the gas bag (15) is pressed, as two plies, in spiral shape along the strip (8). The folding occurs uniformly from an inside to an outside. Using a clamp (19), the folded gas bag (15) is brought to a required shape for a housing (25) of the passenger restraint system.

REFERENCES:
patent: 2538671 (1951-01-01), Crowe
patent: 2697970 (1954-12-01), Tipper
patent: 4659323 (1987-04-01), Ito et al.
patent: 4834700 (1989-05-01), Kondo et al.
patent: 5803892 (1998-09-01), Marotzke
Patent Abstracts of Japan, vol. 96, No. 10, Oct. 31, 1996 and JP 08 142790A (Toyota), Jun. 4, 1996.
Patent Abstracts of Japan, vol. 18, No. 653, Dec. 12, 1994 and JP 06 255437, (Takata), Sep. 13, 1994.

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