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US 2026/0201950 A1Published application
Light weight hybrid piston seal ring
AssigneeRtx Corporation
InventorHamidreza Mohseni
Life of this patent
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Abstract
A piston seal ring for sealing between an inner and an outer radial component includes a core having a shell, wherein the core includes a material selected from the group consisting of titanium alloy, titanium-based metal matrix, carbon-carbon composite, electro-graphitic carbon, ceramic matrix composite and combinations thereof, and wherein the shell includes a material selected from the group consisting of nickel alloy, cobalt alloy and combinations thereof.
Claims20
A piston seal ring for sealing between an inner and an outer radial component, comprising:
- a core having a shell, wherein the core comprises a material selected from the group consisting of titanium alloy, titanium-based metal matrix, carbon-carbon composite, electro-graphitic carbon, ceramic matrix composite and combinations thereof, and wherein the shell comprises a material selected from the group consisting of nickel alloy, cobalt alloy and combinations thereof.
A method for making a piston seal ring, comprising the steps of:
- forming a core of the piston seal ring from a material selected from the group consisting of titanium alloy, titanium-based metal matrix, carbon-carbon composite, electro-graphitic carbon, ceramic matrix composite and combinations thereof, and
- forming a shell on the core, wherein the shell comprises a material selected from the group consisting of nickel alloy, cobalt alloy and combinations thereof, and wherein the shell defines a radially outer facing surface of the piston seal ring.
Dependencies are inferred from the claim text.