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

Claim 0:
1. A borescope plug assembly comprising:
an outer case;
an inner case spaced from the outer case, the inner case including a third aperture and a second sealing surface, the second sealing surface surrounding the third aperture;
a restrictor pin fixedly mounted to the outer case, the restrictor pin in sliding contact with the inner case;
a housing extending between a first housing end and a second housing end, the housing including a plug aperture, an internal chamber, and a bayonet interface, the plug aperture located at the second housing end, the internal chamber extending from the plug aperture toward the first housing end, and the bayonet interface disposed about the internal chamber, the housing mounted to the outer case;
a 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, the plug extending through the plug aperture with the second shaft end and the at least one tab disposed within the internal chamber, and the at least one tab configured to engage the bayonet interface such that the plug is selectively engaged with the housing with the first sealing surface in contact with the second sealing surface and with the plug extending through the restrictor pin; 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 housing.