Device that reduces to rub and hinder creeps into based on shape memory alloy spring

The utility model discloses a device that reduces to rub and hinder creeps into based on shape memory alloy spring, it includes spline dabber, spline housing, body, reset spring, mud pulse generator,shape memory alloy spring and mud turbogenerator, this is internal to have the cavity, reset spring,...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CUI YONGHUI, BO YUBING, BO TAO, LIU RUI, BO HEQIU, ZHENG ZHIGANG, YU DEPING, BO CHAO, LI JINGSONG, CAI WEI, PU WENXUE
Format:	Patent
Sprache:	chi ; 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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