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US 2026/0168387 A1Published application
Knife Seal Wear Measurement
AssigneeRtx Corporation
InventorIsaac Jon Hogate
Life of this patent
Estimating the term…
Abstract
A coated knife edge seal member has an annular knife edge having: a flank having a first end face and a second end face. The knife edge has: a tip converging to a rim; and an annular reference datum. The member has a metallic substrate and a coating on the substrate at the tip.
Claims20
A coated knife edge seal member comprising:
- an annular knife edge having:
- a flank having a first end face and a second end face;
- a tip converging to a rim;
- and
- an annular reference datum;
- a metallic substrate;
- and
- a coating on the substrate at the tip.
5 more elements
A method for inspecting a coated knife edge seal member, the coated knife edge seal member comprising:
- an annular knife edge having:
- a flank having a first end face and a second end face;
- a tip converging to a rim;
- and
- a reference datum;
- a metallic substrate;
- and
- a coating on the substrate at the tip,
- the method comprising:
- optical measuring a distance from the reference datum to the rim.
7 more elements
A coated knife edge seal member comprising:
- an annular knife edge having:
- a flank having a first end face and a second end face;
- and
- a tip converging to a rim;
- a metallic substrate;
- a coating on the substrate at the tip;
- and
- means for providing a reference datum for optical measurement of a thickness of coating at the rim.
5 more elements
Dependencies are inferred from the claim text.