Electrical igniter of a pyrotechnical gas generator
First Claim
1. A belt pretensioner comprising a piston, a cylinder with a radial opening and a pyrotechnical gas generator having a propelling charge arranged within said cylinder, said pretensioner further comprising an electrical igniter having an igniter housing of its own, said igniter and said cylinder with said propelling charge defining separate units to allow separate shipping of said units before final assembly of said units, said igniter housing containing pyrotechnical ignition material, an electrical ignition element and a cable end connected to said ignition element, said igniter housing being secured to said cylinder to radially extend therefrom, said igniter housing having an opening adjacent to said radial opening in said cylinder, wherein said propellant is ignitable through said openings in said igniter housing and in said cylinder.
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Accused Products
Abstract
An electrical igniter of a pyrotechnical gas generator including a propelling charge has a housing of its own in which pyrotechnical ignition material including an electrical ignition element and a cable end connected thereto are enclosed so that electrical plug contacts may be avoided.
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Citations
10 Claims
- 1. A belt pretensioner comprising a piston, a cylinder with a radial opening and a pyrotechnical gas generator having a propelling charge arranged within said cylinder, said pretensioner further comprising an electrical igniter having an igniter housing of its own, said igniter and said cylinder with said propelling charge defining separate units to allow separate shipping of said units before final assembly of said units, said igniter housing containing pyrotechnical ignition material, an electrical ignition element and a cable end connected to said ignition element, said igniter housing being secured to said cylinder to radially extend therefrom, said igniter housing having an opening adjacent to said radial opening in said cylinder, wherein said propellant is ignitable through said openings in said igniter housing and in said cylinder.
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10. A belt pretensioner comprising:
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a piston; a cylinder having a radial opening; a propelling charge arranged within said cylinder; an electrical igniter for igniting said propelling charge releasably connected to said cylinder, said igniter having an igniter housing, said igniter housing containing pyrotechnical ignition material, an electrical ignition element and a cable end connected to said ignition element, said igniter housing extending radially from said cylinder, said igniter housing having an opening adjacent to said radial opening in said cylinder, said propelling charge being ignitable through said opening in said igniter housing and said radial opening in said cylinder upon ignition of said ignition material.
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Specification