SOLID PROPELLANT/LIQUID TYPE HYBRID GAS GENERATOR
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Accused Products
Abstract
A gas generator comprising a housing having a mixing chamber and a pyrotechnic charge in the housing. A container having a liquid therein is disposed in the housing and has an open end and a closed end, with an end cap closing the open end and having a piston portion removably connected thereto and being movable within the liquid container to pressurize the liquid therein when the piston portion is separated from the end cap. The piston portion is positioned to be exposed to combustion gas from the pyrotechnic charge when it is ignited and is separable from the end cap when the combustion gas exceeds a predetermined pressure. In another embodiment, the liquid container may be a collapsible tube. The closed end of the liquid container has a weakened portion constructed to be opened when the pressure of the liquid in the container exceeds a predetermined pressure. The pyrotechnic charge and the weakened portion of the liquid container are in fluid communication with the mixing chamber so that combustion gases from the ignition of the pyrotechnic charge mix with and vaporize the liquid in the mixing chamber to generate a non-toxic, low temperature, low particulate inflation gas.
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Citations
22 Claims
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1-19. -19. (canceled)
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20. A gas generator comprising:
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a housing having a mixing chamber; a pyrotechnic charge in said housing; a flexible container in said housing having a liquid therein, said flexible container having an outer closed end adjacent to said pyrotechnic charge and an inner end having a weakened portion constructed to be opened when the pressure of the liquid therein exceeds a predetermined pressure; said pyrotechnic charge and said weakened portion of said liquid container being in fluid communication with said mixing chamber; whereby when said pyrotechnic charge is ignited, the combustion gas therefrom enters said mixing chamber and also contacts said flexible liquid container to collapse it to pressurize the liquid therein and open said weakened portion when the liquid pressure exceeds the predetermined pressure to enable liquid to flow from said liquid container into said mixing chamber wherein the liquid and combustion gas are mixed to vaporize the liquid and cool the combustion gas. - View Dependent Claims (21, 22)
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Specification