Patent ID: 11891903
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 7:
8. A gas turbine engine comprising:
an outer engine case surrounding a turbine section of the gas turbine engine, the outer engine case disposed about an axial centerline of the gas turbine engine;
a mid-turbine frame disposed radially inside of the outer engine case relative to the axial centerline, the mid-turbine frame including an interior side and an exterior side, the interior side forming at least a portion of a core flow path through the turbine section, the mid-turbine frame further including a third aperture and a second sealing surface surrounding the third aperture, and the third aperture extending through the mid-turbine frame from the interior side to the exterior side;
a restrictor pin fixedly mounted to the outer engine case, the restrictor pin in sliding contact with the mid-turbine frame;
a housing mounted to the outer engine case, the housing including a first housing end, a second housing end, an internal chamber, and a bayonet interface;
a plug extending through the restrictor pin, the plug including a shaft, a first sealing surface, and at least one tab, the shaft extending between a first shaft end and a second shaft end along a plug axis, the first sealing surface disposed at the first shaft end, the at least one tab projecting radially outward from the shaft relative to the plug axis, the at least one tab disposed within the internal chamber, and the at least one tab configured to engage the bayonet interface; and
a spring positioned within the internal chamber between the first housing end and the at least one tab, the spring configured to bias the plug in an axially outward direction away from the first housing end relative to the plug axis.