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.
Claims10
An apparatus for removable attachment on a surface of a cast metal component proximately overlying a crack to be repaired in the cast metal component, comprising:
- at least one drill guide having a plurality of through passages dimensioned to receive means for drilling out material of the cast metal component;
- wherein said through passages are arranged in said drill guide to define a drilling pattern for forming a lock receiving recess in the cast metal component, and
- wherein a shape of said lock receiving recess corresponds to a shape of a lock such that the lock, once received in said lock receiving recess, draws the crack closed to prevent propagation of the crack;
- wherein said at least one drill guide comprises a first drill guide and a second drill guide.
Dependencies are inferred from the claim text.