Method and apparatus for replacing buried pipe

A pipeline replacement system incorporating an expansion and line replacement mandrel and having a power system for imparting linear movement and rotation to the mandrel. Within the scope of the invention, the mandrel may be pushed or pulled or both pushed and pulled through an existing buried pipel...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	THOMPSON, ALAN E
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GALLERIES GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING JOINTS OR FITTINGS FOR PIPES LARGE UNDERGROUND CHAMBERS LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SHAFTS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TUNNELS WEAPONS
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