{
  "abstract": "A gas turbine engine includes a combustor and a valve coupled to the combustor. The valve includes a valve body, a valve stem, and an actuator. The valve body is formed to define an air chamber. The valve stem is movable between a closed position and an open position. The actuator is configured to move selectively the valve stem between the closed position and the open position.",
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  "source_date": "2026-04-21",
  "source_id": "US-12607266-B2",
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  "supersedes": null,
  "title": "Double bellows valve for preventing undesired valve failure positions",
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}