DE2545090

Apparatus, for attaching an object to a pipe having an internal ledge and releasing the object in response to the combination of both the landing of a closure member within said apparatus and the subsequent internal pressurization of the pipe, which includes a contractibly ledged collar whose ledge...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	SAVAGE, RONALD EDDY, DUNCAN, OKLA. (V.ST.A.)
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	Apparatus, for attaching an object to a pipe having an internal ledge and releasing the object in response to the combination of both the landing of a closure member within said apparatus and the subsequent internal pressurization of the pipe, which includes a contractibly ledged collar whose ledge is releasably restrained into interlocking engagement with the pipe ledge and which contracts upon landing of a closure member in a collar and subsequent internal pressurization of the pipe.