Corrosion control in hollow frame structures
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsSamuel G. Lambrakos, Harry Jones, III, Patricia Paulette
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Abstract
Corrosion protection in hollow metal structures is attained by placing an injected, foam-in-place, closed cell plastic polymer foam into an interior of a hollow metal structure, thereby preventing the ingress of foreign matter, such as dirt or water.
Claims8
A technique for preventing corrosion in hollow metal structures comprising:
- application of an expanding plastic polymer material into a hollow metal structure to act as a barrier to an environment containing corrosion causing species.
A technique for preventing corrosion in hollow metal structures comprising:
- a closed cell plastic polymer foam injected into the hollow metal structure;
- and means for injecting the resin mixture into the hollow metal structure.
A method for corrosion proofing a hollow metal structure, said hollow metal structure having an interior and exterior surface, comprised of the steps of:
- drilling a plurality of access holes into the hollow metal structure;
- preparing the interior surface, when precorroded, of the hollow metal structure;
- and
- injecting an expanding plastic polymer material through said access holes into the interior of the hollow metal structure from a pressurized dispenser.
A method for corrosion proofing a hollow metal structure, said hollow metal structure having an interior and exterior, comprised of the steps of:
- drilling a plurality of access holes into the hollow metal structure or utilizing existing access holes;
- preparing the interior surface, when precorroded, of the hollow metal structure;
- and
- injecting a closed cell plastic polymer foam material through said access holes into the interior of the hollow metal structure from a pressurized dispenser.
A method for corrosion proofing a hollow metal structure, said hollow metal structure having an interior and exterior, comprised of the steps of:
- drilling a plurality of access holes into the hollow metal structure or utilizing existing access holes;
- preparing the interior surface, when precorroded, of the hollow metal structure;
- and
- injecting a polymeric diisocynate polyol resin mixture through said access holes into the interior of the hollow metal structure from a pressurized dispenser.
A technique for preventing corrosion in hollow metal structures comprising:
- a polymeric diisocynate polyol resin injected into the hollow metal structure;
- and
- means for injecting the resin into the hollow metal structure.
Dependencies are inferred from the claim text.