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US 9,463,767 B2Granted
Bursting diaphragm, especially for an inflator, inflator, airbag module and vehicle safety system
AssigneeTRW Airbag Systems GmbH
InventorsRolf Ruckdeschel, Lorenz Seidl
Life of this patent
Estimating the term…
Abstract
The invention relates to a bursting diaphragm (14) for an inflator (10) comprising at least one predetermined breaking contour (24) destroyable upon activation of the inflator (10), wherein a shock wave can be generated. In accordance with the invention, the predetermined breaking contour (24) includes a through hole (25) on at least one end point (27), especially on all end points (27).
Claims19
An inflator comprising:
- an igniter unit;
- a combustion chamber containing fuel, the fuel being ignitable by the igniter unit;
- a gas supply chamber in fluid communication with the combustion chamber prior to activation of the inflator, the gas supply chamber containing pressurized gas prior to activation of the inflator;
- and
- a bursting diaphragm disposed between the combustion chamber and the gas supply chamber, the bursting diaphragm separating the combustion chamber from the gas supply chamber and comprising:
- at least one predetermined breaking contour destroyable upon activation of the inflator by a shockwave generated upon activation of the inflator;
- and
- a through hole on at least one end point of the predetermined breaking contour, the through hole providing fluid communication between the combustion chamber and the gas supply chamber prior to activation of the inflator and prior to discharge of gas therefrom.
5 more elements
An inflator comprising:
- an igniter unit;
- a combustion chamber containing fuel, the fuel being ignitable by the igniter unit;
- a gas supply chamber in fluid communication with the combustion chamber prior to activation of the inflator, the gas supply chamber containing pressurized gas prior to activation of the inflator;
- and
- a bursting diaphragm spaced apart from the igniter unit and disposed between the combustion chamber and the gas supply chamber, the bursting diaphragm separating the combustion chamber from the gas supply chamber and comprising:
- at least one predetermined breaking contour destroyable upon activation of the inflator by a shockwave generated upon activation of the inflator;
- and
- a through hole on at least one end point of the predetermined breaking contour, the through hole providing fluid communication between the combustion chamber and the gas supply chamber prior to activation of the inflator.
5 more elements
An inflator comprising:
- an igniter unit;
- a combustion chamber containing fuel, the fuel being ignitable by the igniter unit;
- a gas supply chamber in fluid communication with the combustion chamber, the gas supply chamber and the combustion chamber defining a sealed and pressurized vessel;
- and
- a bursting diaphragm disposed in the sealed and pressurized vessel between the gas supply chamber and the combustion chamber, the bursting diaphragm comprising a through hole providing the fluid communication between the gas supply chamber and the combustion chamber, the bursting diaphragm further comprising at least one predetermined breaking contour that is destroyable upon activation of the inflator, the destruction of the at least one predetermined breaking contour generating a shockwave, wherein the through hole is located on at least one end point of the predetermined breaking contour.
2 more elements
Dependencies are inferred from the claim text.