Pneumatic slip type lift sub chuck

The utility model discloses a pneumatic slip type lift sub chuck which comprises a body and a slip arranged in the body. Each insert plate groove of the slip is provided with two bearing faces from the top end to the lower portion of a slip body, the two bearing faces are located in the middle posit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GU XUELIANG, XU YINFENG, CAO CAIHONG, CHEN SHILONG, HE YUNHUA, XU BOBING, MAO YAFEI
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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