Inflatable plug

A novel inflatable plug for interrupting fluid flow in a pipe is provided which effects a stable, rigid seal while at the same time has a minimal axial length so as to be easily maneuverable. The plug is made from flexible, impermeable fabric and is provided with finely distributed, flexible inelast...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FISCHER, WILLIAM H
Format:	Patent
Sprache:	eng
Schlagworte:	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 METHODS OF STEAM GENERATION PIPES STEAM BOILERS STEAM GENERATION SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A novel inflatable plug for interrupting fluid flow in a pipe is provided which effects a stable, rigid seal while at the same time has a minimal axial length so as to be easily maneuverable. The plug is made from flexible, impermeable fabric and is provided with finely distributed, flexible inelastic connector elements or threads running in the axial direction and secured to opposed walls. When the plug is inflated, the threads prevent the opposed walls from separating a greater distance than the length of the threads. A complete plug assembly is also disclosed, comprising three such plugs in series, mounted on a bracing support frame and provided with a fail-safe inflation system.