Sprayable sealant for aircraft parts and assemblies
AssigneeThe Patent Well LLC
InventorsKent Boomer, Chad Knight, Michael Dry, Peter Sibello, Jeff Busby
Life of this patent
Estimating the term…
Abstract
Applicant discloses a two part polymer mix for use in the aircraft industry that is applied with pneumatic mix and spray gun. A two part cartridge is used in the mix and spray gun so the mix is applied immediately upon mixing, but the two components are kept separated unless the gun is applying the mix. The mix cures to form a clear sealant that allows for inspection of cracks and corrosion beneath the sealant. It cures quickly so that the coated part may be further processed, for example in the assembly line during aircraft build.
Claims14
A cartridge assembly for applying a sealant coating, the cartridge assembly for use in a pneumatic mix and spray gun, the cartridge assembly comprising:
- a body having a first compartment and a second compartment, the first compartment containing a first part of a sealant mix, the second compartment containing a second part of the sealant mix, the body dimensioned to engage the mix and spray gun, the body also having a receiving port for receiving compressed gas to drive the mix;
- and
- a mixing straw engaged to the compartments, configured to receive and combine the two parts and emit a sealant mix, under pressure, from a tip at a removed end thereof to form a cure in place, sealant coating on a workpiece, the sealant coating being one of a polyurea, polyurethane or hybrid coating;
- wherein the sealant coating reaches dry hard in 90 minutes or less performed according to FED-STD-141 and has a peel strength of between 5 and 35 piw (dry anodine-coated 6061 Aluminum Alloy, ⅛″ thick, 90-degree peel back, 77° F.);
- and wherein the sealant coating is Flame Retardant under 14 CFR 25.853a, Appendix F, Part 1(A)(1)(ii) (12 second vertical burn).
A cartridge assembly for applying a sealant coating, the cartridge assembly for use in a pneumatic mix and spray gun, the cartridge assembly comprising:
- a body having a first compartment and a second compartment, the first compartment containing a first part of a sealant mix, the second compartment containing a second part of the sealant mix, the body dimensioned to engage the mix and spray gun, the body also having a receiving port for receiving compressed gas to drive the mix;
- and
- a mixing straw engaged to the compartments, configured to receive and combine the two parts and emit a sealant mix, under pressure, from a tip at a removed end thereof to form a cure in place, sealant coating on a workpiece, the sealant coating being one of a polyurea, polyurethane or hybrid coating;
- wherein the sealant coating reaches dry hard in 90 minutes or less performed according to FED-STD-141 and has a peel strength of between 5 and 35 piw (dry anodine-coated 6061 Aluminum Alloy, ⅛″ thick, 90-degree peel back, 77° F.);
- and wherein
- the sealant mix has a specific gravity of less than 1.0.
Dependencies are inferred from the claim text.