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US 12,042,893 B2Granted
Lock and pin combination for cold working cracks
AssigneeLock-N-Stitch, Inc.
InventorGary Reed
Life of this patent
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Abstract
A lock and pin for the structural and fluid tight repair of cracks not amenable to high temperature repairs or synthetic material patches. Fluid tight pins and locks seal the crack while one or more locks prevent the crack from growing. These repairs need to endure the remaining life cycle of the machinery part while withstanding all the strain, pressure, heat and expansion and contraction of the part before the crack(s) were formed. Often these cracks evolved due to engineering design flaws that will require even greater strength from these areas than when new.
Claims6
A method for repairing a crack in material, comprising steps of:
- fixing a drill fixture locating guide to a surface of the material, wherein said drill fixture locating guide comprises a fixture body and a recess formed in said fixture body for receiving a drill guide;
- placing a first drill guide into said recess and drilling a plurality of holes in said material in a first pattern defined by the first drill guide, and then removing the first drill guide;
- placing a second drill guide into said recess and drilling a plurality of holes in said material in a second pattern defined by the second drill guide, and then removing the second drill guide, wherein a lock receiving recess is defined by the first and second patterns;
- removing the drill fixture locating guide from the surface of the material;
- and
- forcing a lock having a shape corresponding to said lock receiving recess into said lock receiving recess.
3 more elements
Dependencies are inferred from the claim text.