EMBANKMENT HAMMER

An overburden drilling equipment for drilling a hole. The equipment comprises a down-the-hole hammer (11) for rock drilling, comprising a cylinder (13), a piston (20) reciprocating in the cylinder due to pressurized water being directed alternately to the upper and lower ends of the piston to effect...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	ASBERG, BENGT
Format:	Patent
Sprache:	eng ; fre
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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