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US 10,519,805 B2Granted
Turbine case coupling
AssigneeUnited Technologies Corporation
InventorsDarren M. Smith, Jonathan A. Scott
Life of this patent
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Abstract
A first case includes a first plurality of threads, a second case includes a second plurality of threads, an interface provides at least one of anti-rotation or alignment with respect to the first case and the second case, and a nut includes a third plurality of threads configured to engage with the first plurality of threads and a fourth plurality of threads configured to engage with the second plurality of threads.
Claims16
A system for selectively coupling cases comprising:
- a gas turbine engine first turbine case including a first plurality of threads;
- a gas turbine engine second turbine case including a second plurality of threads, where the first turbine case and the second turbine case are coaxial about a centerline and axially adjacent;
- an interface configured to provide for at least one of anti-rotation or alignment with respect to the first turbine case and the second turbine case;
- a nut including a third plurality of threads configured to engage with the first plurality of threads and a fourth plurality of threads configured to engage with the second plurality of threads;
- and
- an insulation ring axially between the third plurality of threads and the fourth plurality of threads with respect to the centerline and radially outside the interface, configured to isolate the nut from hot air of an engine;
- wherein the first turbine case includes a first seal that radially seals against the nut and is axially upstream of the third plurality of threads with respect to the centerline, and the second turbine case includes a second seal that radially seals against the nut and is axially downstream of the fourth plurality of threads with respect to the centerline.
4 more elements
Dependencies are inferred from the claim text.