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US 4,905,386 AGranted
Process for unearthing hazardous pipeline
AssigneeThe Dow Chemical Company
InventorOtis C. Taylor
Life of this patent
Estimating the term…
Abstract
A cutting edge member for fitting onto an excavation apparatus wherein the cutting edge member is of softer material than iron for digging around pipelines.
Claims6
A process for unearthing buried hazardous pipeline without damaging the pipeline comprising:
- (a) providing a backhoe bucket with a replaceable cutting edge comprising a flat plate with attachment means for attachment to said backhoe bucket;
- (b) selecting the material for said cutting edge such that said cutting edge is softer than the material of said pipeline so that when said plate contacts said pipeline, said plate will deform to avoid damaging the pipeline;
- of said
- (c) digging the ground in the vicinity pipeline with said backhoe bucket;
- and
- (d) deforming the cutting edge of the backhoe bucket when said bucket contacts the pipeline.
3 more elements
Dependencies are inferred from the claim text.