Abstract:
The inclusion of between about 15 to about 60 formulation weight percent of a reaction product of basic copper nitrate and at least one transition metal complex of 5-aminotetrazole, wherein the at least one transition metal complex of 5-aminotetrazole and the basic copper nitrate are included in a weight ratio of no more than 1 part of the at least one transition metal complex of 5-aminotetrazole per 1 part of basic copper nitrate in azide fuel-free gas generant formulations exhibiting increased burn rates, as compared to the same formulation without the inclusion of that reaction product.
Abstract:
A restraint system, its retractor (20), and related method provides adaptive load limitation characteristics and pretensioning. Factors such as occupant size or crash severity may be used in controlling the system. The adaptive restraint system generally includes a retractor (20) having a pretensioner (30), and through activation of the pretensioner the level of load limitation may be changed. A clutch (760) may also be employed between the pretensioner and the retractor.
Abstract:
An airbag cushion is disclosed for use in automotive protective systems. The airbag cushion includes a tube that may be restricted to prevent gas venting. A cord is coupled to the tube and to a surface of the cushion. Upon airbag deployment, the cord extends until taut or extends until the cushion encounters an obstruction. If pulled taut, the cord tightens the tube and restricts gas venting. If the cushion encounters an obstruction, the cord remains lax and the tube is able to vent gas.
Abstract:
An airbag cushion is disclosed for use in automotive protective systems. The airbag cushion includes a vent that, prior to cushion deployment, extends from the cushion exterior. A tether is coupled to the vent and to an interior surface of the cushion. Upon airbag deployment, the tether extends until taut or extends until the cushion encounters an obstruction. If pulled taut, the tether pulls the vent into the cushion interior where the interior air pressure effectively closes the vent. If the cushion encounters an obstruction, the tether remains lax, and the vent remains on the cushion exterior. A device is provided for retaining the vent in the closed position during occupant ride down.
Abstract:
An inflator device including a pressure vessel forming a gas storage chamber having contents including a supply of stored pressurized gas. The pressure vessel forms a gas exit opening at a first end of the pressure vessel. An initiator assembly includes an initiator cover that extends through a sidewall of the pressure vessel at a first end portion of the pressure vessel, such that at least a portion of the initiator cover extends radially inwardly into the gas storage chamber. An initiator is positioned within the initiator cover, and produces a discharge effective to rupture a rupturable closure element normally covering the gas exit opening to allow flow of at least a portion of the gas storage chamber contents through the gas exit opening. A first radial aperture formed in the initiator cover is positioned at a direct discharge distance with respect to the closure element to focus the initiator discharge at the closure element to rupture the closure element. In one preferred embodiment of the invention, the inflator device also includes a supply of gas-generating pyrotechnic material contained within the gas storage chamber, wherein at least a portion of the supply of gas-generating pyrotechnic material is reactable to produce a product gas. A second aperture is formed in the initiator cover, and is in reaction initiation communication with the supply of gas-generating pyrotechnic material.
Abstract:
An airbag module assembly including a module housing, a door and a door retainer ring. The module housing forms a compartment adapted to contain an inflatable restraint airbag cushion in a stored state. The module housing has at least one open end, and includes at least one side wall and at least one face wall generally perpendicularly disposed relative to the at least one side wall about the at least one open end. The door retainer ring is adapted to be joined to the module housing about the module housing open end. The door includes a circumference portion and has an inner surface and an outer surface. The door, in a static state, is disposed over the module housing to enclose the module housing open end with at least the circumference portion of the door disposed between the door retainer ring and the module housing. The circumference portion of the door includes at least one release portion and at least one hinge section. In the assembly, upon inflation of the inflatable restraint airbag cushion, the inflatable restraint airbag cushion expands against the inner surface of the door, whereby at least the release portion is displaced from between the door retaining ring and the module housing with the door rotatably hinging about the at least one hinge section.
Abstract:
An assembly including a support housing and an actuator device (20). The actuator device (20) includes an extendable initiator cup (22) including at least one non-random fold (40) and at least in part defining a storage chamber (26) containing a reactive charge (28) reactable to produce reaction products. The extendable initiator cup (22) longitudinally extends from a first length to a second greater length upon reaction initiation of the reactive charge (28). The extendable initiator cup (22) is at least partially disposed within a longitudinally extending bore of the support housing (260). The support housing (260) is effective to limit lateral expansion of the extendable initiator cup (22) upon reaction initiation of the reactive charge (28). The assembly can include an electrical conductive member (250) or an electrical switch. The extendable initiator cup (22) can extend to sever the electrical conductive member (250) or disengage the electrical switch, thereby interrupting the conduction of electricity through an electrical system. Alternatively, the extendable initiator cup (22) can extend to engage the electrical switch thereby allowing the conduction of electricity through an electrical system.
Abstract:
An airbag module (10) may have an inflator (42), a cushion (40), and a housing (46) that contains the inflator (42) and the cushion (40). The housing has an outer wall formed of a flexible material and a bracket designed to be attached to a vehicle. During deployment, the cushion is expelled out of the housing through the bracket. The inflator remains in the housing and inflation gas is conveyed to the cushion through the housing. The inflator may be retained by flaps wrapped around the inflator and secured to a perpendicularly oriented diffuser of the inflator. Alternatively, the diffuser may extend through an orifice formed in a fabric wall within the housing, and retention portions of the outer wall may be wrapped around the opposite side of the inflator. The airbag module may be mounted in an instrument panel to provide front seat, passenger's side impact protection without requiring a rigid module housing.
Abstract:
An airbag inflator diffusion system having a thin profile is disclosed. The diffusion system includes an airbag inflator that is inserted into a sleeve. The sleeve has overlapping longitudinal edges positioned so that the sleeve tightly circumscribes the inflator. Engagement tabs are formed in one longitudinal edge of the sleeve and fold through perforations formed adjacent the other longitudinal edge. Upon activation of the inflator, the sleeve expands radially forming an exhaust passage through which exhaust gas may travel. The folded engagement tabs and their corresponding perforations limit the radial expansion of the sleeve.
Abstract:
A vibration damper gasket is provided for a vibration damper gasket mounting an airbag inflator within an airbag module such that the airbag inflator may serve as a vibration damper for the vehicle. The vibration damper gaskets include a mounting ring sized and designed to fit about the edge of an airbag inflator flange. The mounting ring generally includes upper and lower retention arms and an adapter groove positioned between the retention arms for receiving the edge of the airbag inflator flange. The mounting ring also has a compression column provided on an outside surface of the mounting ring to allow the gasket to be compression-mounted within a vehicle. The vibration damper gaskets of the invention additionally include at least one inflator ground extending along an inside surface of the mounting ring from at least an upper contact surface of the upper retention arm continuously across the adapter groove to a lower contact surface of the lower retention arm. This inflator ground serves to ground the airbag inflator and prevent unintentional initiation of the inflator which may be caused by built-up electrical charges.