Circular air bag made of two simultaneously woven fabrics
AssigneeAirbags International Limited
InventorsRaymond Graham, Christopher Paul Kavanagh, Simon Valkenburg, Michael Gervase Litton
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Abstract
A method of forming an air bag which includes the steps of weaving on a loom an upper and lower fabric simultaneously, the two fabrics being combined in selected areas to define a seam of substantially circular shape. A bag is produced by cutting within the seam. The bag does not have an additional coating, but the permeability of the bag is determined by controlling the sett thereby utilizing the permeability of the weave itself.
Claims6
A method of manufacturing an air bag free from a non-permeable coating by weaving on a loom which comprises:
- forming at least an upper and lower permeable fabric simultaneously;
- simultaneously weaving said upper and lower fabrics together in selected continuous peripheral area such that a continuous substantially circular seam of a combined fabric is formed thereat that encloses a space with a substantially circular periphery;
- cutting the fabric about the entire continuous seam to produce said air bag;
- and
- controlling sett of the weave thereby controlling permeability of the weave itself free from additional coatings added to said air bag.
A method of manufacturing an air bag by weaving on a loom which comprises forming at least an upper and lower fabric simultaneously and simultaneously weaving the two fabrics together in a selected area of a substantially circular shape to define and enclose a space with a circular periphery, and weaving at least one of the fabrics in an area with a more open and permeable construction relative to the remainder of the bag whereby to act as a vent/filter.
Dependencies are inferred from the claim text.