Air-bag and a method of controlling pressure within an air-bag
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United States of America Patent
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Nov 9, 2010
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N/A
app pub date -
Dec 23, 2005
filing date -
Jan 5, 2005
priority date (Note) -
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Abstract
An air-bag (1) is provided with a vent aperture (2). A membrane (3) extends across the vent aperture, the membrane defining a smaller aperture (4) than the vent aperture (2). The periphery of the aperture is defined by a thickened part of the membrane. The membrane is formed of an elastic material such as a silicone rubber material. When a very high pressure exists in the air-bag the vent becomes deformed, thus increasing the size of the aperture defined by the membrane, permitting a relatively large flow of air from the air-bag to reduce the pressure within the air-bag.
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