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US 11,472,569 B2Granted
Aircraft electrical isolation component and method of manufacturing electrical isolation component
AssigneeShort Brothers PLC
InventorsPaolo Ballocchi, Robert Walsh, Nigel Donaldson
Life of this patent
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Abstract
A structural assembly of an aircraft has a fastener extending into first and second structural members. A washer is disposed between the fastener and one of the structural members to electrically insulate the fastener and the structural members. The washer has a core of reinforcement fibers supported in a thermoplastic matrix material. Electrically-insulating outer layers of glass fibers overlay the core.
Claims23
A structural assembly of an aircraft comprising:
- first and second structural members;
- a fastener extending into said structural members;
- a washer disposed between said fastener and one of said structural members and electrically insulating a surface of said fastener from the one of said structural members, said washer comprising:
- a core comprising reinforcement fibers supported in a thermoplastic matrix material, and
- an electrically-insulating outer layer overlaying the core, said outer layer comprising glass fibers, said reinforcement fibers and said glass fibers formed of different materials;
- and
- a metallic expansion sleeve, wherein said washer is configured to withstand a load applied to deform said expansion sleeve during installation of the fastener.
4 more elements
A washer for receiving a fastener therethrough, the washer comprising:
- a core formed of reinforcement fibers supported in a thermoplastic matrix material;
- and
- an electrically-insulating outer layer overlaying the core, said outer layer comprising glass fibers, said reinforcement fibers and said glass fibers formed of different materials,
- wherein said washer is configured to withstand a compressive load from an aircraft fastener,
- wherein said washer is for installation in a fastener assembly comprising a metallic expansion sleeve, and said washer is configured to withstand a compressive load applied to deform said expansion sleeve.
2 more elements
Dependencies are inferred from the claim text.