DEVICE FOR MAKING HOLES IN THE GROUND

The device comprises a casing (1) on which is mounted an axially movable widener (3) consisting of separate sections (11) arranged in a ring-like manner along the periphery of the casing (1) and movable in radial directions. The casing (1) is provided on its external surface with a main stop (4) and...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SERGEI IGOREVICH DEMENTIEV, PETR VLADIMIROVICH DOBROSELSKY, IGOR VLADIMIROVICH NIKOLAEV, ALEXANDR MATVEEVICH BOLNYKH, ALEXANDR IVANOVICH ROLDUGIN, GENNADY TROFIMOVICH BASENIK, BORIS GRIGORIEVICH GOLGSHTEIN, VLADIMIR ALEXANDROVICH BEZLEPKIN
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!