Pyrotechnic tensioner
First Claim
Patent Images
1. A pyrotechnic pretensioner (10) for a safety system in a vehicle comprising:
- an inflator (22) including a propelling charge (26) as well as an igniter (32);
a housing (12) in which a pressure chamber (14) is provided into which gas from the inflator (22) flow and in which a piston is displaced by the gas, the housing (12) including metallic tube (38, 40); and
an end piece (16) closing the pressure chamber (14) and having a wall extending towards the igniter (32) to form a chamber (24) for the propelling charge (26),wherein the end piece (16) connects one of the metallic tubes (38) to another of the metallic tubes (40).
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Accused Products
Abstract
A pyrotechnic pretensioner (10) for a safety system in a vehicle has an inflator (22) including a propelling charge (26) and an igniter (32) and including a housing (12) in which a pressure chamber (14) is provided into which gas can flow and in which a piston can be displaced by the gas, an end piece (16) which closes the pressure chamber (14) and in which a chamber (24) is formed into which the propelling charge (26) is filled and whose wall constitutes the wall of the propellant is provided on the housing (12).
30 Citations
17 Claims
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1. A pyrotechnic pretensioner (10) for a safety system in a vehicle comprising:
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an inflator (22) including a propelling charge (26) as well as an igniter (32); a housing (12) in which a pressure chamber (14) is provided into which gas from the inflator (22) flow and in which a piston is displaced by the gas, the housing (12) including metallic tube (38, 40); and an end piece (16) closing the pressure chamber (14) and having a wall extending towards the igniter (32) to form a chamber (24) for the propelling charge (26), wherein the end piece (16) connects one of the metallic tubes (38) to another of the metallic tubes (40). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A pyrotechnic pretensioner (10) for a safety system in a vehicle comprising:
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an inflator (22) including a propelling charge (26) as well as an igniter (32); a housing (12) in which a pressure chamber (14) is provided into which gas from the inflator (22) can flow and in which a piston can be displaced by the gas; and an end piece (16) closing the pressure chamber (14) and having a wall forming a chamber (24) for the propelling charge (26), wherein a gas conduit (36) is provided in the end piece (16) and forms a fluidic communication between the chamber (24) for the propelling charge (26) and the pressure chamber (14) when the propelling charge (26) is ignited; wherein the housing (12) includes interconnected metallic tubes (38, 40) connected by the end piece (16). - View Dependent Claims (11, 12, 13)
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14. A pyrotechnic pretensioner (10) for a safety system in a vehicle comprising:
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an inflator (22) including a propelling charge (26) as well as an igniter (32); a housing (12) in which a pressure chamber (14) is provided into which gas from the inflator (22) can flow and in which a piston can be displaced by the gas; and an end piece (16) closing the pressure chamber (14) and having a wall forming a chamber (24) for the propelling charge (26), wherein a bursting wall (28) is provided in the end piece (16) between the chamber (24) for the propelling charge (26) and the pressure chamber (14), wherein the housing (12) includes interconnected metallic tubes (38, 40) connected by the end piece (16).
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15. A pyrotechnic pretensioner for a safety system in a vehicle comprising:
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an inflator including a propelling charge and an igniter; a housing including first and second metallic tubes and a pressure chamber into which gas from the inflator can flow and in which a piston can be displaced by the gas; and an end piece closing the pressure chamber and extending into the first and second tubes to interconnect the first and second tubes, the wall of the end piece defining a chamber extending the entire length of the propelling charge for receiving the propelling charge. - View Dependent Claims (16, 17)
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Specification