Patent ID: 6935241

Claim:
A method of producing a device containing pyrotechnical material adapted for use in an occupant restraint system in a vehicle, the method comprising the following steps: providing a tubular housing element with a base and metal ducts incorporated in said base, with said housing element and said base being integrally formed of glass and said housing element and said base defining a housing interior with a bottom adjoining said base, and said metal ducts extending through said bottom into said housing interior; applying a solid metal layer on said bottom, wherein the solid metal layer is connected with said metal ducts thereby interconnecting said metal ducts and forming a heat-generating element; introducing a quantity of said pyrotechnical material into said housing element, said quantity of pyrotechnic material being sufficient to provide enough energy to burst said housing upon ignition of said pyrotechnic material; and sealing said housing element by heating and melting off.