Secondary chamber combustion control mechanism
First Claim
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1. A gas generating system comprising a primary combustion chamber and a secondary combustion chamber, the secondary chamber including:
- a shell;
a cap secured to the shell such that the cap is movable in a first direction responsive to a pressure differential wherein a pressure within the shell is greater than a pressure exterior of the shell; and
at least one gas flow passage defined between the shell and a cavity defined along an exterior surface of the cap,wherein a portion of the exterior surface of the cap that defines an open end of the cavity is positioned entirely within the shell and remains in the shell before, during, and after combustion of gas generant in the primary and secondary combustion chambers.
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Abstract
A gas generating system includes a primary combustion chamber and a secondary combustion chamber. The secondary chamber includes a shell and a cap secured to the shell such that the cap is movable in a first direction responsive to a pressure differential wherein a pressure within the shell is greater than a pressure exterior of the shell. At least one gas flow passage is bounded by the shell and by a cavity extending along an exterior of the cap.
31 Citations
21 Claims
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1. A gas generating system comprising a primary combustion chamber and a secondary combustion chamber, the secondary chamber including:
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a shell; a cap secured to the shell such that the cap is movable in a first direction responsive to a pressure differential wherein a pressure within the shell is greater than a pressure exterior of the shell; and at least one gas flow passage defined between the shell and a cavity defined along an exterior surface of the cap, wherein a portion of the exterior surface of the cap that defines an open end of the cavity is positioned entirely within the shell and remains in the shell before, during, and after combustion of gas generant in the primary and secondary combustion chambers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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- 8. A gas generating system comprising a primary combustion chamber and a secondary combustion chamber, the secondary chamber including a shell and a cap secured to the shell such that the cap is movable in a first direction responsive to a pressure differential wherein a pressure within the shell is greater than a pressure exterior of the shell, wherein the cap and the shell define at least one gas flow passage therebetween, the at least one gas flow passage being structured such that a cross-sectional area of an entry into the at least one gas flow passage from the secondary chamber remains constant as the cap moves in the first direction, wherein the entry into the at least one gas flow passage is defined by a portion of an outer perimeter surface of the cap and an inner surface of the shell, and the portion of the cap defining the entry remains in the shell before, during, and after combustion of gas generant in the primary and secondary combustion chambers.
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21. A gas generating system comprising a primary combustion chamber and a secondary combustion chamber, the secondary chamber including:
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a shell; a cap secured to the shell such that the cap is movable in a first direction responsive to a pressure differential wherein a pressure within the shell is greater than a pressure exterior of the shell; and a plurality of gas flow passages, each passage bounded by the shell and by an associated cavity extending along an exterior of the cap, wherein a first passage of the plurality of passages has a first length and a second passage of the plurality of passages has a second length different from the first length.
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Specification