Abstract: A dual stage inflator is disclosed in the present invention. The dual stage inflator comprises a diffuser subassembly and a gas generator subassembly. Also disclosed is a multiple stage inflator, which comprises a diffuser subassembly, a first gas generator subassembly, and a second gas generator subassembly. Both the dual stage inflator and the multiple stage inflator have numerous output characteristics or output profiles associated therewith to protect different size and position vehicle occupants. The dual stage inflator and the multiple stage inflator release either stored gas or stored gas mixed with combustion gaseous products from the burning of gas generant.

Abstract: A dual stage invention is designed to autoignite an autoignition material before a low temperature gas generant melts. Low temperature gas generants include a high nitrogen content organic fuel with ammonium nitrate as the oxidizer. The dual stage inflator has a first gas generant and a second gas generant that are ignited by separate igniters. The first gas generant and the second gas generant are insulated from the inflator housing to delay the heat transfer from the housing to the first gas generant and second gas generant during a bonfire test, which needs to be passed to receive Department of Transportation classification. The dual stage inflator also has an autoignition cartridge for disposing of the second gas generant by the first gas generant after the first gas generant burns for a predetermined amount of time.

Abstract: A low onset dual stage hybrid inflator comprising a diffuser subassembly, a gas generator subassembly, and a pressure vessel. The dual stage inflator offers a variety of different output levels of inflation gas. The four main deployment scenarios for the dual stage inflator are primary output, staged output, full output, and secondary only. For primary output, only the stored gas is released from the inflator. For staged output, the stored gas is released and after a short period of time (i.e. 30 ms), the gas generant is ignited. For the full output, the stored gas is released from the dual stage inflator at the same time the gas generant is ignited. For secondary output, only the gas generant subassembly is fired, and the hot gases from the gas generant subassembly mix with the stored gas. The combination of the hot gas and the stored gas has sufficient pressure to rupture the burst disk.

Abstract: A cold gas inflator has a pressure vessel made of first and second cylindrical members that are joined by friction welding, the friction welding producing curls that serve to preclude an orifice plate from sliding into the second cylindrical member. The cold gas inflator is filled with stored gas. The cold gas inflator has a burst disk, which prevents the stored gas from exiting the pressure vessel. In the event of an automobile accident, an opening device is actuated, which causes the ignition of pyrotechnic material. This ignition generates a shockwave of sufficient energy to rupture a burst disk. The stored gas flows from the cold gas inflator in a radial direction.

Abstract: A dual stage inflator is disclosed in the present invention. The dual stage inflator comprises a diffuser subassembly and a gas generator subassembly. Also disclosed is a multiple stage inflator, which comprises a diffuser subassembly, a first gas generator subassembly, and a second gas generator subassembly. Both the dual stage inflator and the multiple stage inflator have numerous output characteristics or output profiles associated therewith to protect different size and position vehicle occupants. The dual stage inflator and the multiple stage inflator release either stored gas or stored gas mixed with combustion gaseous products from the burning of gas generant.

Abstract: A low onset dual stage hybrid inflator comprising a diffuser subassembly, a gas generator subassembly, and a pressure vessel. The dual stage inflator offers a variety of different output levels of inflation gas. The four main deployment scenarios for the dual stage inflator are primary output, staged output, full output, and secondary only. For primary output, only the stored gas is released from the inflator. For staged output, the stored gas is released and after a short period of time (i.e. 30 ms), the gas generant is ignited. For the full output, the stored gas is released from the dual stage inflator at the same time the gas generant is ignited. For secondary output, only the gas generant subassembly is fired, and the hot gases from the gas generant subassembly mix with the stored gas. The combination of the hot gas and the stored gas has sufficient pressure to rupture the burst disk.

Abstract: A cold gas inflator having an opening device for rupturing a burst disk. The cold gas inflator is filled with stored gas. The cold gas inflator has a burst disk, which prevents the stored gas from exiting the pressure vessel. In the event of a automobile accident, the opening device is actuated, which causes the ignition of pyrotechnic material. This ignition generates a shockwave of sufficient energy to rupture the burst disk. The stored gas flows into the diffuser and then exits the cold gas inflator in the radial direction. In another embodiment, the stored gas exits the cold gas inflator in the axial direction.

Abstract: A cold gas inflator having an opening device for rupturing a burst disk. The cold gas inflator is filled with stored gas. The cold gas inflator has a burst disk, which prevents the stored gas from exiting the pressure vessel. In the event of a automobile accident, the opening device is actuated, which causes the ignition of pyrotechnic material. This ignition generates a shockwave of sufficient energy to rupture the burst disk. The stored gas flows into the diffuser and then exits the cold gas inflator in the radial direction. In another embodiment, the stored gas exits the cold gas inflator in the axial direction.

Abstract: A cold gas inflator having an opening device for rupturing a burst disk. The cold gas inflator is filled with stored gas. The cold gas inflator has a burst disk, which prevents the stored gas from exiting the pressure vessel. In the event of an automobile accident, the opening device is actuated, which causes the ignition of pyrotechnic material. This ignition generates a shockwave of sufficient energy to rupture the burst disk. The stored gas flows from the cold gas inflator in the radial direction. In another embodiment, the stored gas exits the cold gas inflator in the axial direction.