DEVICE FOR DRILLING HOLES IN GROUND

The soil borer includes a shell, a driving mechanism and a rear shell screw-connected to the shell. On the outer surface of rear shell, there is a lobe, which is the stopper of rear shell to the shell and extends beyond the shell. One side of the lobe is slanting to the generatrix of the rear-shell...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	PETR VLADIMIROVICH DOBROSELSKY, IGOR VLADIMIROVICH NIKOLAEV
Format:	Patent
Sprache:	eng
Schlagworte:	CESSPOOLS EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SEWERAGE SEWERS SHAFTS TUNNELS WATER SUPPLY
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