Nov 3, 2026

US12782093 - Gas generator

A gas generator includes a housing, one or more first discharge ports and one or more second discharge ports both provided in the housing configured to discharge the combustion gas. A closing member covers at least one of the one or more first discharge ports and at least one of the one or more second discharge ports together. The closing member includes a portion covering the at least one first discharge port and configured to rupture at a first rupture pressure and a portion covering the at least one second discharge port and configured to rupture at a second rupture pressure. The closing member includes a breakage assisting portion configured to reduce a strength of the closing member at at least a boundary portion between the at least one first discharge port and the at least one second discharge port.

Assignee: DAICEL CORPORATION
Inventors: Kenichi Yonezawa
Filing date: 2024-11-15

gasgeneratorwaveabsorbingmaterial

The patent describes a gas generator with a housing that features multiple discharge ports for combustion gas, each covered by a closing member designed to rupture at different pressures. This innovative design includes a breakage assisting portion to facilitate the controlled rupture of the closing member, enhancing the efficiency and safety of gas discharge.

Claim 1

1 . A gas generator, comprising: a housing; first discharge port provided in the housing and configured to discharge the combustion gas generated in the housing to an outside; second discharge port provided in the housing together with the first discharge port and configured to discharge the combustion gas generated in the housing to the outside; and a closing member covering the first discharge port and the second discharge port together and provided inside the housing, the closing member including, a portion covering the first discharge port and configured to rupture at a first rupture pressure and a portion covering the second discharge port and configured to rupture at a second rupture pressure higher than the first rupture pressure, and a breakage assisting portion configured to reduce the strength of a closing member at least at a boundary portion between the first discharge port and the second discharge port, wherein a pressure at which the closing member covering the first discharge port ruptures is lower than a pressure at which the closing member covering the second discharge port ruptures. a housing; first discharge port provided in the housing and configured to discharge the combustion gas generated in the housing to an outside; second discharge port provided in the housing together with the first discharge port and configured to discharge the combustion gas generated in the housing to the outside; and a closing member covering the first discharge port and the second discharge port together and provided inside the housing, the closing member including, a portion covering the first discharge port and configured to rupture at a first rupture pressure and a portion covering the second discharge port and configured to rupture at a second rupture pressure higher than the first rupture pressure, and a breakage assisting portion configured to reduce the strength of a closing member at least at a boundary portion between the first discharge port and the second discharge port, wherein a pressure at which the closing member covering the first discharge port ruptures is lower than a pressure at which the closing member covering the second discharge port ruptures.

Google Patents

https://patents.google.com/patent/US12782093

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12782093