Corrosion resistant gasket for aircraft
AssigneeThe Boeing Company
InventorsPatrick W. Gaines, Mickey A. Williamson
Life of this patent
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Abstract
A corrosion resistant gasket for aircraft, and more particularly to encapsulation of a conductive mesh in a pliable fluorosilicone compound that will not become bonded to mating surfaces and will also migrate upon compression during installation to the threads of attaching hardware utilized between the instrument, antenna, and aircraft structure, thereby reducing corrosion through the attaching hardware, by providing a hermetic seal around the periphery of the envelope of the attached device.
Claims5
In combination:
- an instrument;
- aircraft structure;
- attaching hardware utilized between said instrument and said aircraft structure and, a corrosion resistant gasket disposed between said instrument and said aircraft structure;
- and,
- said corrosion resistant gasket comprising a conductive mesh encapsulated in a pliable uncured uncatalyzed fluorosilicone compound having a durometer of 40 or less that will not become bonded to mating surfaces and will also migrate upon compression during installation to the threads of said attaching hardware thereby reducing corrosion through the attaching hardware by providing an outer bead around the periphery of the envelope to provide a hermetic seal of the attached instrument.
In combination in a gasket:
- an expanded aluminum screen encapsulated with a fluorosilicone compound that is not vulcanized and catalyzed;
- and
- said expanded aluminum screen not exceeding more than 20% of the thickness of said fluorosilicone compound.
In combination:
- an aircraft antenna;
- an aircraft structure;
- a gasket disposed between said aircraft antenna and said aircraft structure;
- and
- said gasket including an uncured in catalyzed fluorosilicone material encapsulating a conductive mesh, said mesh having a minimum hole opening of 0.065 inches with a minimum of eight holes per inch with the X monofilament dimension height twice that of the Y dimension width so as to provide pliable conformity to the aircraft structure contour and surface contact to the mating surfaces at fifteen inch pounds of compression.
A flexible gasket comprising silver plated stranded aluminum having low electrical bonding resistance of less than 0.02 milliohm encapsulated in an uncured unvulcanized fluorosilicone compound thereby eliminating structural and component damage during removal, said uncured, unvulcanized fluorosilicone compound providing a hermetic seal under high vibration, flexing conditions, and aerodynamic conditions of up to 0.6 mach, said uncured unvulacnized fluorosilicone compound further providing a seal for internal aircraft pressure over 30 p.s.i. thereby preventing either outside or inside introduction of an electrolyte creating a galvanic cell.
Dependencies are inferred from the claim text.