INTERNAL PIPE CLAMP APPLYING APPARATUS AND METHOD

The method of the invention utilizes opening of a gas pipeline and introducing into its interior a mobile assembly which carries an array of separable, discrete leak sealing rings, moving the assembly along the interior of the conduit to the site of a leak, then expanding and disengaging one of the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ROBERT W. COOK, EDMOND J. BISSAILLON, ROBERT P. DICKINSON
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The method of the invention utilizes opening of a gas pipeline and introducing into its interior a mobile assembly which carries an array of separable, discrete leak sealing rings, moving the assembly along the interior of the conduit to the site of a leak, then expanding and disengaging one of the rings into leak sealing position, then advancing the assembly to the next leak, repeating the operation until all of the leak sealing rings in the array carried by the assembly have been thus utilized. The assembly includes air-operated positioning elements for guide wheels on which the apparatus travels, and a power operated element for advancing the sealing rings, one by one, into operative relation with a ring expander, also forming a part of the travelling assembly.