Abstract:
An initiator (10) for a vehicle occupant restraint airbag system with electrostatic discharge protection to prevent inadvertent system actuation. The initiator includes a cup-shaped conducting metallic housing (12) containing pyrotechnic material closed by a sealing material (16) such as glass which either extends across an open end (14) of the housing (12) or across an annular conducting header ring (18) fitted against an inner surface of the housing (12) to encapsulate the pyrotechnic material. First and second electrodes (20, 22) extend through the sealing material (16) and are interconnected by a resistive bridge element. A surface mount type zener diode (30) has its anode electrically connected to the housing (12) and its cathode electrically connected to the second electrode (22).
Abstract:
An autoignition charge for pyrotechnic automotive airbag inflation devices is provided in the form of a foil (10) comprising a film (12) of a synthetic polymer or of a metal, having an adhesive (16) on one surface of the foil and an autoignition material (14) on the opposite surface of the foil. Pieces of foil are readily attached to inflator housings at any suitable location and are secured to the housing by the adhesive on one surface of the foil.
Abstract:
An initiator for an inflator of an automotive airbag restraint system includes a housing and a wall dividing the housing into two parts, one for housing a firing element of the initiator, and one for receiving at least one application specific integrated circuit which performs functions of a portion of an electronic control unit. A mounting element is located in the second part of the housing, and at least one application specific integrated circuit is carried by the mounting element. The mounting element and two or more application specific integrated circuits may be provided as a package, in which at least two application specific integrated circuits are mounted in a stacked condition to form an application specific integrated circuit stack. The application specific integrated circuits are configured such that predetermined electrical circuit locations of adjacent ones of the application specific integrated circuits to be interconnected are aligned. The package includes connectors for electrically interconnecting these predetermined electrical circuit locations in adjacent ones of the application specific integrated circuits in the stack.
Abstract:
An autoignition charge for pyrotechnic automotive airbag inflation devices is provided in the form of a foil (10) comprising a film (12) of a synthetic polymer or of a metal, having an adhesive (16) on one surface of the foil and an autoignition material (14) on the opposite surface of the foil. Pieces of foil are readily attached to inflator housings at any suitable location and are secured to the housing by the adhesive on one surface of the foil.
Abstract:
An initiator for an inflator of an automotive airbag restraint system includes a housing and a wall dividing the housing into two parts, one for housing a firing element of the initiator, and one for receiving at least one application specific integrated circuit which performs functions of a portion of an electronic control unit. A mounting element is located in the second part of the housing, and at least one application specific integrated circuit is carried by the mounting element. The mounting element and two or more application specific integrated circuits may be provided as a package, in which at least two application specific integrated circuits are mounted in a stacked condition to form an application specific integrated circuit stack. The application specific integrated circuits are configured such that predetermined electrical circuit locations of adjacent ones of the application specific integrated circuits to be interconnected are aligned. The package includes connectors for electrically interconnecting these predetermined electrical circuit locations in adjacent ones of the application specific integrated circuits in the stack.
Abstract:
An initiator (10) for a vehicle occupant restraint airbag system with electrostatic discharge protection to prevent inadvertent system actuation. The initiator includes a cup-shaped conducting metallic housing (12) containing pyrotechnic material closed by a sealing material (16) such as glass which either extends across an open end (14) of the housing (12) or across an annular conducting header ring (18) fitted against an inner surface of the housing (12) to encapsulate the pyrotechnic material. First and second electrodes (20, 22) extend through the sealing material (16) and are interconnected by a resistive bridge element. A surface mount type zener diode (30) has its anode electrically connected to the housing (12) and its cathode electrically connected to the second electrode (22).
Abstract:
An initiator (10) for an inflator of an automotive airbag restraint system includes a housing (12) and a wall (30) dividing the housing into two parts, one for housing a firing element (36) of the initiator, and one for receiving at least one application specific integrated circuit which performs functions of a portion of an electronic control unit. A mounting element (58) is located in the second part of the housing, and at least one application specific integrated circuit (50, 52, 56) is carried by the mounting element. The mounting element and two or more application specific integrated circuits may be provided as a package, in which at least two application specific integrated circuits are mounted in a stacked condition to form an application specific integrated circuit stack. The package includes connectors (75, 77, 79) for electrically interconnecting these predetermined electrical circuit locations in adjacent ones of the application specific integrated circuits in the stack.
Abstract:
An inflator assembly for an airbag safety system that comprises a container (22) having a chamber configured to hold pressurized gases, an igniting assembly (36) for producing exit gases and a diffusing assembly (42) to vent the exit gases. The container (22) is provided with an end closure (32) that is composed of a material having a substantial silicon content. The igniting assembly (36) is configured such that it may be coupled to the end closure and capable of withstanding a heat treatment process that bonds the igniting assembly (36), end closure (32) and container (22).