Abstract: The present invention provides a gas generator including a housing provided with a diffuser shell and a closure shell, an ignition device, the diffuser shell being in a substantially cup-like shape and having an annular bent portion obtained by bending a circumferential wall portion at an opening inwardly, the closure shell being in a substantially annular shape having a annular plate portion that includes a annular curved portion projecting toward the inside of the housing, the ignition device being fixed to a central hole in the annular plate portion with a resin, an inner circumferential part of the annular plate portion in the closure shell abutting against the resin, an outer circumferential part of the annular plate portion abutting against and being fixed to the annular bent portion of the diffuser shell.

Abstract: An exemplary embodiment can be an inflator module assembly. The inflator module assembly can include a module housing having a plurality of gas discharge openings; an inflator housed within the housing, the inflator, upon actuation, emitting gas from one lateral side or end thereof, and a gas treatment assembly mounted within the housing external the side or end of the inflator from which gas is emitted. The gas treatment assembly can include a first strainer element nestled within a second strainer element. The first and second strainer elements each have a side wall including a plurality of gas passage apertures, with at least either 1) the gas passage apertures of the first strainer element offset relative to the gas passage apertures of the second strainer element or 2) the gas passage apertures of the second strainer element offset relative to the module housing gas discharge openings.

Abstract: An inflator includes: an inflator case configured from a bottomed cylindrical upper case and lower case, with the inflator case having an upper combustion chamber and a lower combustion chamber in which gas generants are accommodated, the upper combustion chamber and the lower combustion chamber being partitioned by a partition wall, and with the inflator case having a peripheral wall in which upper gas discharge holes and lower gas discharge holes are formed; a first inner cylinder member in which a transfer charge for combusting the gas generant inside the lower combustion chamber is accommodated; a second inner cylinder member whose upper end portion penetrates the partition wall and is positioned in a lower portion of the upper combustion chamber, with a transfer charge for combusting the gas generant inside the upper combustion chamber being accommodated inside the second inner cylinder member; a first igniter and a second igniter.

Abstract: A propellant grain retainer for an air bag inflator having a pressure vessel. A cantilevered finger is mounted in the pressure vessel and a propellant grain is mounted thereon. Upon assembly of the pressure vessel, the finger is deformed inwardly away from an adjacent wall of the pressure vessel to increase the air gap between the pressure vessel wall and the propellant grain to reduce heat transfer therebetween and increase the safety of the inflator.

Abstract: A gas generator includes an outer wall delimiting a first chamber, a source of gas and a second chamber for diffusing gas outwards between which is found a nozzle. The nozzle includes a first through-hole for letting through gas from the first chamber to the second chamber. The first hole is closed by a cap capable of being opened from the triggering of an electro-pyrotechnic device located towards the first chamber. The second diffusion chamber includes in the wall at least one second through-hole for letting through gas outwards. The outer wall includes at least one overmolded plastic material around a portion of the metal nozzle.

Abstract: A cylindrical filter for a gas generator includes, a plurality of layers made of a porous metal plate in which a compressive strength (S1) of a predetermined region in at least one end in the height direction is set smaller than a compressive strength (S2) of a portion other than the S1 region, the porous metal plate being selected from the group consisting of expanded metal, metal lath, and perforated metal, and the S1 region corresponding to a region of 5 to 20% in length from both ends with respect to the overall height.

Abstract: An inflator including an initiator and a bulkhead molded around the initiator. The inflator includes a housing formed of two overlapping housing portions mechanically coupled together around a portion of the bulkhead. One of the housing portions includes cut tabs that are crimped into cut receivers of the other housing portion.

Abstract: An inflator includes: an inflator case configured from a bottomed cylindrical upper case and lower case, with the inflator case having an upper combustion chamber and a lower combustion chamber in which gas generants are accommodated, the upper combustion chamber and the lower combustion chamber being partitioned by a partition wall, and with the inflator case having a peripheral wall in which upper gas discharge holes and lower gas discharge holes are formed; a first inner cylinder member in which a transfer charge for combusting the gas generant inside the lower combustion chamber is accommodated; a second inner cylinder member whose upper end portion penetrates the partition wall and is positioned in a lower portion of the upper combustion chamber, with a transfer charge for combusting the gas generant inside the upper combustion chamber being accommodated inside the second inner cylinder member; a first igniter and a second igniter.

Abstract: The disclosure provides an inflator device for a passive restraint device, like an airbag. In certain aspects, a fuel-rich gas generant grain is located in actuating proximity to an initiator device. The grain has at least one flow channel through which a shock wave generated by the initiator device passes. The shock wave opens a burst disc between the inflator housing and downstream airbag to permit gases to flow into the airbag. A chamber storing pressurized gas (having at least one oxidant, e.g., O2) is also disposed within the inflator. Upon initiator actuation, the oxidant can react with combustion products of the initiator and the fuel-rich gas generant and flow into the airbag for rapid inflation. Methods of inflating airbags and improving airbag deployment reliability are provided. Such inflators are particularly suitable for large volume (greater than 60 liter) airbags.

Abstract: A gas generating system includes a first chamber activatable to provide a first quantity of gas and a second chamber activatable independently of the first chamber to provide a second quantity of gas. A single opening enables fluid communication between the second chamber and the first chamber. A barrier seals the opening to prevent fluid communication between the first and second chambers prior to activation of the second chamber.

Abstract: An inflator (10), especially for a vehicle occupant restraint system, comprising a combustion chamber (24) in which solid propellant (28) adapted to be burnt off while forming a gas is accommodated, a storage chamber (26) containing a pressure gas (30), an igniter (14) and a component (20) arranged between the combustion chamber (24) and the storage chamber (26). There is at least one flow communication between the storage chamber (26) and the combustion chamber (24). The component (20) includes an additional weakened zone (22) adapted to be destroyed upon activation of the inflator (10) so as to permit flow of gas from the combustion chamber (24) into the storage chamber (26).

Abstract: The present invention discloses a hybrid inflator of an airbag. The hybrid inflator of the airbag includes a main casing, a central channel, a vent tube, a rupture disc, an inner cover group, an igniter group, a first buffering pad, a second buffering pad and a diffuser. The main casing includes a bottom housing and an upper housing. The central channel is fixed with the bottom housing and passed through the upper housing. A convective hole is disposed on the central channel. The vent tube is covered onto the external central channel and has a throttle bore thereon. The first buffering pad is disposed on a bottom of the inter air chamber. The second buffering pad is disposed in the inner air chamber to separate a space for propellant. The diffuser is correspondingly covered and fixed on the main casing.

Abstract: In an airbag module (100) for a vehicle steering wheel comprising an inflator (110) and a device (130) for vibration damping on which the inflator (110) is mounted to be oscillating as vibration damper mass the device (130) for vibration damping is configured at least to damp a first device-specific frequency and a second device-specific frequency, wherein different excitation directions are associated with the first and second device-specific frequencies.

Abstract: Airbag inflators and methods for forming airbag inflators are disclosed. An airbag inflator includes a hollow body comprising a wall, the wall having an inner surface defining an interior and an outer surface. The airbag inflator further includes a reinforcement layer surrounding and bonded to the hollow body. The reinforcement layer has an inner surface and an outer surface, the inner surface of the reinforcement layer in contact with the outer surface of the wall. The reinforcement layer is formed from a fiber reinforced thermoplastic material comprising a plurality of fibers dispersed in a thermoplastic resin.

Abstract: The invention relates to a knee airbag module having a housing, an airbag accommodated in the housing and a substantially cylindrical gas generator (50) accommodated in the housing for filling the airbag, wherein the housing has an upper wall (12) and a peripheral side wall having a front section, a rear section (24) and two side sections. In this connection, at least one side section has, adjacent to the front (22) section, an opening (30) through which one end (54) of the gas generator (50) passes at least in part through the side wall. From each of the two side sections a respective fastening flange (40) extends with a respective fastening section (40a) having a fastening surface.

Abstract: An airbag apparatus is provided having an inflator in which the waterproofing property of the connection between an initiator and a harness for distributing power is ensured by potting, and leakage at the time of the filling of a potting material is prevented. An airbag apparatus includes a bag portion formed of a base cloth panel in a bag shape and deployed and inflated by being supplied with gas for deployment, and an inflator that generates the gas for deployment supplied to the bag portion.

Abstract: A frontal airbag has a first section, a second section, and a third section, the second section being in fluid communication with both the first and the third section. The first, second and third sections form a triangular structure upon inflation of the airbag. A gas generator is attached to the first section and in fluid communication with the first section. An end portion on the third section remote from the second sections attached to the first section in an area between the gas generator and the second section. Two side tethers attached to the first section and to one of the second and third sections or near transitional bend between the second and third section provide resistance against flattening of the airbag after inflation. The first section and the third section are directly attached to each other by a seam, by an adhesive, or by lamination.

Abstract: A gas generating system (10) including a filter assembly (36) formed from a plurality of nodules (36b) positioned and secured in relation to each other so as to form a porous structure (36a). In one embodiment, the nodules (36b) are metallic and are secured in relation to each other using either a sintering process or a brazing process. The nodules (36b) may be bonded directly together, or the nodules may be secured within a metallic matrix material. The gas generating system may also include a first baffle plate (40) positioned between the plurality of nodules (36b) and a gas source of the gas generating system (10), and a second baffle plate (42) positioned between the plurality of nodules (36b) and a housing wall (12c) of the gas generating system (10). The baffle plates (40, 42) provide added structural integrity to the porous structure (36a) and increase the length of a tortuous flow path of gases through the filter assembly (36).

Abstract: A gas generator includes a case enclosing a combustion chamber containing at least one pyrotechnic charge, a diffusion chamber, and a chamber for storing a material releasable from the chamber during combustion of the charge, to change state endothermically under the effect of gas coming from this combustion, then be evacuated via the diffusion chamber. The material is a liquid stored at atmospheric pressure. The chamber has at least one inlet opening, and a series of outlet openings. The outlet openings are arranged within a wall separating the chamber from the diffusion chamber. The charge and the combustion and diffusion chambers are dimensioned such that during combustion, at least one portion of gas flow generated by the charge opens at least the inlet opening and penetrates into the chamber provoking the escape of the material via the outlet openings, then its endothermic change in state, mainly in the diffusion chamber.

Abstract: A gas generator includes, an igniter having an ignition portion and a conductive pin a collar holding the igniter, a metallic cup-shaped case fixed to the collar and having a fragile portion. The collar includes a metallic portion and a resin part enclosing the ignition portion. An outer diameter of the metallic portion is larger than an outer diameter of the resin part. The cup-shaped case has an annular portion bent inward at an opening thereof. The annular bent portion includes a bent corner, an annular tilted surface, and an annular terminal end. The annular tilted surface includes an outer tilted surface facing toward a side of a peripheral surface of the cup-shaped case and an inner annular tilted surface facing the opposite side. The inner annular tilted surface of the annular bent portion presses against the resin portion.

Abstract: The present invention provides a gas generator for a restraining apparatus of a vehicle, including a combustion chamber, a tabular cushion member being disposed on a bottom portion of the combustion chamber, the solid gas generating agent as a gas generating source, being charged in the combustion chamber inside the gas generator together with the cushion member, the combustion chamber being substantially in a cup shape in which an inner diameter (D1) of an opening is smaller than an inner diameter (D2) of the bottom portion, the cushion member including a circular portion serving as a base part and a plurality of protrusions protruding from a peripheral edge of the circular portion, an outer diameter (d1) of the circular portion and the inner diameter (D1) of the opening satisfying a relationship of d1<D1, and an outer diameter (d2) including the protrusions satisfying relationships of d2>D1 and d2?D2.

Abstract: A gas generator includes a diffuser shell and a closure shell, a housing formed by joining the diffuser shell and the closure shell, inside the housing, an ignition device chamber defined by a cup-shaped container, a combustion chamber enclosing the ignition device chamber, an annular or flat plate-shaped filter facing the top plate, a retainer supporting the filter, the retainer including a bottom surface and a cylindrical wall surface extending from an outer circumferential edge of the bottom surface, the cylindrical wall surface having a gas passage, the retainer being fixed by the cylindrical wall against a circumferential wall plate. During actuation, when the housing is deformed the retainer and the filter move to abut the top plate of the diffuser shell, combustion gas passes through the filter and the gas passage to be discharged from the gas discharge port.

Abstract: A gas generator includes, a housing comprising circumferential wall plates of a diffuser shell and a closure shell, an ignition device chamber, a combustion chamber surrounding the ignition device chamber and containing a gas generating agent, an annular or flat-plate filter disposed facing the top plate and spaced from the circumferential wall plate, a first support including a disk-shaped portion abutting against and supporting an upper surface of the filter, including communication holes only at a section in contact with the filter, a second support including an annular flat portion abutting against and supporting a lower surface of the filter and cylindrical wall portion fixed to the housing. A gap is formed between the top plate of the housing and the circumferential wall plate and the first support member, when a pressure inside the combustion chamber increases due to combustion and the top plate is deformed.

Abstract: A gas generator includes a housing body for housing a gas generating charge, a squib for igniting the gas generating charge and a holder section that holds the squib. The holder section includes a holder body made of metal and a molded section that is molded from synthetic resin and located between the holder body and the squib. The squib and the holder body are integrally molded with the molded section at molding of the molded section. The holder section includes a support section that protrudes inwardly to support an igniter of the squib. The support section is covered by the molded section all over the outer surface and has such a sectional contour as to taper toward the leading end as taken along an axial direction of the housing body.

Abstract: A gas generator includes an initiator having a case, two electrodes and a cap having a wall delimiting an aperture for insertion of the case, a part delimiting an aperture for access to the electrodes and a retaining part made of plastic material overmolded into the aperture between the initiator, the cap and the part. The wall includes, near the aperture and the protrusion retaining the cap, a second protrusion for supporting the mold in a support direction having a component extending from the bottom toward the aperture, the second protrusion having an outer edge at least partially not covered by the part for use as a support surface in said support direction for a mold to be used for overmolding.

Abstract: A gas generating system includes a housing and a nozzle coupled to the housing. The nozzle includes at least one bi-directional gas exit passage configured to provide a thrust-neutral release of gases from the nozzle.

Abstract: A gas generator assembly for a restraining device includes: a gas generator including, a housing, a cup-shaped diffuser having a gas discharge port and attached to one end of the housing, a cup-shaped gas flow controller assembled with the gas generator, an outer diameter of the diffuser being smaller than that of the housing, a gas flow controller having a bottom surface, a circumferential wall portion and an opening portion, the bottom surface being provided with a communication hole for allowing passage of gas flow, the circumferential wall portion surrounding the gas discharge port, the gas flow controller being attached to form a gap between a peripheral edge of the opening portion and the housing, and gas, discharged from the gas discharge port, colliding the circumferential wall portion, the gas flow being divided into both sides in an axial direction to flow out from the gap and the communication hole.

Abstract: A gas generator for a restraining apparatus includes a housing, an inner tube member within the housing, an ignition device on a bottom portion of the housing within the inner tube member, a solid gas generating agent in a combustion chamber, and an adsorbent separated from the solid gas generating agent and stored in a cup-shaped container. The container is provided such that a gap is formed between an opening portion of the container and a ceiling portion of the housing or a member in the housing, and a bottom portion side of the container is inserted such that at least a part of an outer circumferential wall surface of the container directly opposes an inner circumferential wall surface of the inner tube member. At activation, the container is moved by an impact and abuts against the ceiling portion of the housing or the member to close the opening portion.

Abstract: An airbag inflator has a primary igniter and a secondary igniter. The primary igniter ignites an ignition enhancer material, which in turn ignites a primary supply of a gas generant material in a first chamber. A secondary supply of the gas generant material is located in a second chamber that is closed and is not in contact with any ignition enhancer material. Activation of the secondary igniter does not ignite the secondary supply of gas generant material, but does cause the second chamber to be opened. Combustion products from the primary supply of gas generant material enter the chamber and ignite the secondary supply of the gas generant material.

Abstract: The invention relates to a vehicle occupant restraint system (10) for a vehicle comprising an inflator (14) and an airbag (12) connected to the inflator (14). The inflator (14) includes a mounting extension (42) which is provided for mounting the inflator (14) on a vehicle part (18) and projects through an orifice in the airbag (12). A sealing assembly (58) arranged at the mounting extension (42) is provided which clamps the airbag (12) against the inflator (14) and seals the orifice in the airbag (12). Furthermore, the invention relates to a sealing element (60) having a closed annular sealing body (68) including at least one lateral extension (64, 66) which extends in the central plane (E) of the sealing body (68).

Abstract: An airbag device configured to deploy along an interior side of a passenger compartment of a vehicle may include a gas generator and an inflatable airbag. The inflatable airbag may include a plurality of inflatable chambers configured to be inflated by the gas generator. A first inflatable chamber may be tethered to at least a second inflatable chamber by a connection member. The airbag may be configured so that when the airbag is inflated the connection member restrains the separation of the first and second inflatable chambers and forces at least one of the inflatable chambers inboard so that the plurality of inflatable chambers form a convex profile along a plane perpendicular to the side of the passenger compartment.

Abstract: A hybrid gas generator includes a high pressure gas cylinder and a gas release actuating device. The gas release actuating device includes a pyrotechnic gas cylinder, an igniting assembly, and a bursting disc. The pyrotechnic gas cylinder includes a guide ring securely disposed in the pyrotechnic gas cylinder to hermetically separate the space in the pyrotechnic gas cylinder into a gas releasing chamber and a firing chamber, a piercing plug fitted with the guide ring, where the gas releasing chamber is formed with at least a vent for releasing the gas stored in the high pressure gas cylinder, and the firing chamber may be provided with a gas producing medium to produce gas for driving the piercing plug when the igniting assembly is ignited.

Abstract: The invention relates to an actuator subassembly (10) for a vehicle safety system comprising a pyrotechnic actuator unit (12) including an igniting portion (14) as well as a receiving element (16) forming a guide for the movable igniting portion (14) after activating the actuator unit (12). Further the invention relates to an airbag module of a vehicle safety system comprising said actuator subassembly (10) and a method of mounting a releasable tether (30) on an airbag module by means of said actuator assembly (10).

Abstract: A primary gas flow aperture communicates between upstream and the downstream sides of a bulkhead securable across an inflator discharge passageway, accommodating some inflation gas flow through the passageway. A deformable flow control panel peripherally secured on the downstream side of the bulkhead has a closure portion obscuring some inflation gas flow past the bulkhead. Pressure of the inflation gas on the closure portion deforms the control panel away from the bulkhead. A primary gas flow window through the flow control panel overlies all or some of the primary gas flow aperture. When the primary gas flow window is larger than or equal to the primary gas flow aperture, supplemental gas flow apertures are formed through the bulkhead separated from the primary gas flow aperture. Otherwise, supplemental gas flow windows are formed through the flow control panel separated from the primary gas flow window.

Abstract: Inflatable airbag assemblies having a strap and clamp system to securely hold an inflator relative to a housing. The strap may be attached to an airbag cushion to restrict the movement of the strap or strap may not be attached to the airbag cushion and may move freely while positioned within openings in the housing.

Abstract: A solid propellant compact (10) in the form of a compact made of a powdered and/or granulated solid propellant, especially for inflators and/or actuators of a vehicle occupant restraint system, includes at least one recess on at least one of its sides. Solid propellant compacts (10) of this type are provided in an inflator (14) comprising at least one combustion chamber. A module includes such inflator (14) with an airbag inflatable by the inflator (14). A pyrotechnical drive unit (30) comprising a housing (32), a piston (34) movable in the housing (32) includes solid propellant compacts (10) of this type.

Abstract: An airbag module, especially for a vehicle occupant restraint system, includes an assembly of an inflator (16) having a mounting flange (32) and an inflator supporting member (18) for resilient support of the inflator (16). The inflator supporting member (18) includes a holding member (24) made of metal sheet and at least one mounting foot (26) arranged at the holding member (24) for connection to an inflator base (12). The holding member (24) and the mounting flange (32) are fixed to each other by plastic shaping of at least one of the two members.

Abstract: A gas generating system usable in an inflatable vehicle occupant protection system is provided. The system includes an outer housing having an outer diameter varying within a range of approximately 16 millimeters to approximately 20 millimeters. A vehicle occupant protection system and an airbag module including the gas generating system are also provided.

Abstract: A power source for applying a force to an object includes thermite in a quantity sufficient to generate a thermite reaction, and a gas producing substance disposed in association with the thermite. The gas producing substance produces a gas when the thermite reaction. The thermite reaction, the gas, or combinations thereof provide a force to the object.

Abstract: A gas generator includes, a tubular housing including, on a circumferential surface thereof, first and second gas discharge port groups, the second gas discharge port group being separated axially from the first gas discharge port group, both being closed by a seal member, a first closing member having an ignition device and a second closing member, closing one end and the other end of the tubular housing, respectively, opening pressures P1 and P2 for opening the first and second gas discharge port groups, satisfying a relationship P1<P2, the first gas discharge port group being positioned at a center portion in the axial direction of the tubular housing or in the vicinity thereof, and the second gas discharge port group being positioned at a center portion between the first gas discharge port group and the second closing member or in the vicinity thereof, respectively.

Abstract: A gas generating device includes a housing and a squib. The housing includes a housing body which accommodates a gas generating agent, a holder which holds a squib, and a connector which connects the housing and the holder to each other. A housing body is connected to the holder so that an annular contact portion is pressed toward the holder. The holder includes a holder body and a resinous molding portion which is interposed between the holder body and the squib. The resinous molding portion includes a flange portion with which the annular contact portion comes into contact. The holder body includes a support portion capable of supporting the flange portion when the housing body and the holder are connected to each other by the connector.

Abstract: A gas generator includes a housing having a gas discharge port, a combustion chamber cup member disposed, in the housing, such that an opening portion thereof covers a bottom surface of the housing, the combustion chamber cup member having a communication hole at least a portion of its peripheral wall surface thereof, a metallic cover member covering the peripheral wall surface provided with the communication hole, and a combustion chamber being formed inside the combustion chamber cup member and accommodating a gas generating agent and an igniter therein, at the time of activation, the cover member expanding and deforming mainly in the radial direction to form a gap between the peripheral wall surface of the combustion cup member and the metallic cover member, which serves as a gas channel leading to the combustion chamber and the outside of the combustion chamber.

Abstract: The present application provides a gas generator including: a cylindrical housing with a gas discharge port, one end of the tubular housing being closed by a closing member including a disk-shaped main body portion, an annular projection portion and the peripheral surface of the annular projection portion, a transfer charge chamber housing defining a transfer charge chamber charged with a transfer charge and being attached to the closing member, the transfer charge chamber housing having a cup-like shape including a flame-transferring hole at a bottom surface, a flange portion and a annular wall surface extending in the axial direction of the housing from the flange portion, being mounted such that the annular wall surface thereof is fitted into an annular groove, and being fixed by the flange portion pressed in the axial direction by a supporting member and a sealing member disposed in a remaining space of the annular groove and sealing between the tubular housing and the closing member.

Abstract: The subject of the present invention is a pyrotechnic method for generating gas at two successive flow rates—a first flow rate then a second flow rate, said first flow rate being higher than said second flow rate—which comprises: the combustion of a first pyrotechnic charge (10) in a first combustion chamber (1) discharging into a second combustion chamber (2) via at least one nozzle (3); and the combustion of a second pyrotechnic charge (20) in said second combustion chamber (2) discharging to the outside via at least one vent (21). Characteristically, said first chamber (1) operates at high pressure and said second chamber (2) operates at low pressure. Another subject of the invention is a pyrotechnic gas generator suitable for the implementation of said method. The invention is most particularly applicable in the context of side protection airbags (“curtain airbags”), used in automobile safety.

Abstract: An airbag module including an airbag, a gas generator introduced into an opening in the airbag, and a gas generator support on which the gas generator is fixed. The gas generator is arranged with respect to the gas generator support such that in case of activation the airbag pulls the gas generator onto the gas generator support. The gas generator support has an opening through which the non-inflated airbag is pulled such that a first region of the airbag, which does not surround the gas generator, is located on the one side of the opening and a second region of the airbag, which surrounds the gas generator, is located on the other side of the opening, and the opening is dimensioned such that the gas generator cannot be pulled through the opening.

Abstract: A gas generating system is provided including a first housing formed from a polymeric material, and a pyrotechnic gas generant material contained in the first housing. The first housing forms a combustion chamber for the gas generant. An airbag system and a vehicle occupant protection system, each incorporating a gas generating system as described herein, are also disclosed.

Abstract: An apparatus (12) includes a primary housing (20) constructed from sheet metal by stamping, a primary inflation fluid source (100), a secondary housing (70) constructed from sheet metal by stamping, and a secondary inflation fluid source (200). The primary inflation fluid source (100) is located in the primary housing (20) and is actuatable to effect a primary flow of inflation fluid out of the primary housing to inflate the inflatable device (14). The secondary housing (70) is disposed within the primary housing (20). The secondary inflation fluid source (200) is located in the secondary housing (70) and is actuatable to affect a secondary flow of inflation fluid to supplement the primary flow of inflation fluid. The secondary housing (70) has a first portion (77) that moves at least partially out of engagement with a second portion (74) of the secondary housing (70) when the secondary inflation fluid source is actuated.

Abstract: A gas generator includes, a housing having a circumferential wall portion defining a gas discharge port, a first end, and a second end, the first and second ends being closed, a cup-shaped inner tube member disposed in the housing, an inside thereof accommodating an ignition device, an outside thereof being a combustion chamber charged with a gas generating agent, a bottom surface of the inner tube member being located in a bottom plate of the first end of the housing, an opening end portion of the inner tube member being provided with a ventilating portion for allowing a combustion product to pass therethrough, an igniter attached to an igniter attaching portion formed at the second end of the housing, and a passage for the combustion product formed between an inner wall surface of the inner tube member and the igniter attaching portion, and reaching the ventilating portion.

Abstract: A safety device is provided, comprising an elastic membrane, which partially or completely delimits a hollow space, which is provided for the accident-initiated filling subject to elastic expansion of the membrane, and a gas generator with a filling fluid source communicating with the hollow space, wherein between the filling fluid source and a surface of the membrane facing the hollow space and/or in the membrane at least one heat protection means is arranged, which is provided for the protection of the membrane from a thermal impact through filling fluid of the filling fluid source.

Abstract: A gas generator includes: a housing having closure and diffuser shells; an inner tube member accommodating an igniter, an opening end of the inner tube member being located opposing a bottom plate of the closure shell and defining a ventilating portion formed at the opening end, the inner tube member being fixed to an igniter attaching portion, and having a cylindrical portion projecting inwardly in the closure shell, and a passage being formed between the inner tube member and the igniter attaching portion to reach the ventilating portion; an outer circumference cylindrical member provided in the combustion chamber and one end opening thereof being located at the bottom plate; and an annular porous member defining a space above the combustion chamber, the space being communicated to a gas discharge path defined between the outer circumference cylindrical member and a side surface of the diffuser shell through a communicating portion.