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US 7,726,028 B2Granted
Cutting device for pipelines
AssigneeTRACTO-TECHNIK GmbH & Co. KG
InventorsElmar Koch, Martin Köper, Franz-Josef Püttmann
Life of this patent
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Abstract
A cutting device for cutting or bursting a pipeline includes a basic body having at least one cutting or perforating element, wherein the cutting or perforating element discontinuously cuts the pipeline in the longitudinal direction or at least discontinuously weakens the pipe material.
Claims7
In combination:
- a pipeline having an outside diameter;
- and
- a cutting device for cutting or bursting the pipeline, said cutting device comprising a basic body having a first cutting or perforating element, which is constructed to have an outside diameter which at least in one area is smaller than the outside diameter of the pipeline so as to discontinuously cut the pipeline in a longitudinal direction or at least discontinuously weaken the pipe material of the pipeline, and a second cutting or perforating element having a cutting roller and/or a cutting knife which follows the first cutting or perforating element in a same cutting line, wherein the cutting roller or cutting knife of the second cutting or perforating element has a radial dimension which is greater than or equal to an outer radius of the pipeline to completely cut through the pipeline.
Dependencies are inferred from the claim text.