AN IMPROVED ROTARY ROLLER REAMER

The invention relates to a roller assembly (20) including a roller pin (22) and a roller (24) arranged to be mounted on said roller pin, seal means (34a,34b) between the roller pin and the roller arranged to prevent leakage of a lubricant from a clearance between the roller pin and the roller. The r...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MATHEW, JOHN KENNEDY, JOHN, FRANCIS KENNEDY, MICHAEL, DESMOND SLATTERY
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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