Abstract: A gas bag module for a vehicle occupant restraint device comprises a gas bag and a discharge arrangement in fluid connection with said gas bag. The discharge arrangement has a discharge opening, through which gas can escape from the gas bag, and at least one element made of an electrically activatable polymer actuator to expose and/or alter the discharge opening upon activation of said polymer actuator.

Abstract: A vehicle occupant restraint device having a gas bag module includes a gas generator for inflating a gas bag, at least one discharge opening that is formed in a rigid component of the gas bag module, through which gas that is produced by the gas generator and conveyed into the gas bag can be discharged, and at least one closing device for the discharge opening. The closing device has an adjusting device and a plurality of covers of different pressure sensitivities. A specific one of said covers is placed in front of the discharge opening by the adjusting device even before the gas bag module is activated, so as to close the discharge opening until a pre-established gas bag interior pressure is reached that is associated with the specific cover, and, when this interior pressure is exceeded, to at least partially release the discharge opening through bursting.

Abstract: An impact protection device for a vehicle occupant includes a gas bag, a tension means (16) and a drawing arrangement (22). The gas bag has at least one discharge opening (12). The cross section of the discharge opening (12) is able to be altered by means of the tension means. The tension means is coupled to the drawing arrangement which is not fastened to the gas bag.

Abstract: A gas bag for use in a vehicle occupant restraint system, comprises at least one wall or a wall part made of a fabric which is formed from fibres. The fibres comprise a polymer matrix and cellulose fibrils distributed in said polymer matrix.

Abstract: A gas bag module for a vehicle occupant restraint device comprises a gas bag and a discharge arrangement in fluid connection with said gas bag. The discharge arrangement has a discharge opening, through which gas can escape from the gas bag, and at least one element made of an electrically activatable polymer actuator to expose and/or alter the discharge opening upon activation of said polymer actuator.

Abstract: A gas bag (1) for use in a vehicle occupant restraint device comprises a wall part (3) of an uncoated fabric and a heat protection device (11) applied onto a section of the wall part (3). The heat protection device (11) is formed from at least one layer of a further uncoated fabric (13) glued to the wall part (3) using a flame-retardant adhesive (15).

Abstract: A vehicle occupant restraint device having a gas bag module includes a gas generator for inflating a gas bag, at least one discharge opening that is formed in a rigid component of the gas bag module, through which gas that is produced by the gas generator and conveyed into the gas bag can be discharged, and at least one closing device for the discharge opening. The closing device has an adjusting device and a plurality of covers of different pressure sensitivities. A specific one of said covers is placed in front of the discharge opening by the adjusting device even before the gas bag module is activated, so as to close the discharge opening until a pre-established gas bag interior pressure is reached that is associated with the specific cover, and, when this interior pressure is exceeded, to at least partially release the discharge opening through bursting.

Abstract: A gas bag module for a vehicle occupant restraint device has a gas generator for inflating a gas bag and at least one device for creating a discharge opening in the gas bag module, through which gas produced by the gas generator can be discharged from the module. The device for creating the discharge opening has at least one conductive circuit, which at least in part contacts a wall of the module, in which the discharge opening is to be produced. The conductive circuit includes at least two different conductive materials, and at least one contact point of two conductive materials is arranged such that, after an ignition of the gas generator, it is exposed to a different temperature than a rest of the contact points, so as to generate a current in the conductive circuit, which results in a heating of the conductive circuit and a weakening of the wall along the conductive circuit.

Abstract: A gas bag of a restraint device has a first wall part (14) and a second wall part (16), the first wall part (14) and the second wall part (16) being joined at an attachment section (18) by an adhesive. A bonding agent (20) is added to the attachment section (18) in order to improve the adhesive connection.

Abstract: A gas bag for a vehicle occupant restraint device includes a gas bag wall (16). The gas bag (12) has a fabric (26) with fibres which are coated with a material having piezoelectric characteristics.

Abstract: A gas bag module for a vehicle occupant restraint device includes a rigid component (16). The rigid component (16) has a discharge opening (14) formed therein through which gas can escape. A control element (10) is arranged at the discharge opening (14). The control element (10) assumes a rolled-up state in the case of low pressure action and assumes an unrolled state in the case of greater pressure action.

Abstract: A gas bag module for a vehicle occupant restraint device includes a rigid component (10). The rigid component (10) has a discharge opening (12) formed therein through which gas can escape. A control arrangement through which gas can pass is provided at the discharge opening (12). The control arrangement is designed so that the quantity of the gas passing through depends on the speed of flow of the gas.

Abstract: A gas bag module for a vehicle occupant restraint device includes a rigid component (10). The rigid component (10) has a discharge opening (12) formed therein through which gas can escape. The discharge opening (12) is covered by a flat covering part (14). The flat covering part (14) includes an extensible material and has at least one hole (16).