BORING DEVICE AND BORING METHOD

PROBLEM TO BE SOLVED: To provide a boring device that occupies only a small space inside a pipe and helps securing a widest arrangement location possible for other members, along with a boring method.SOLUTION: A curved-line boring device (boring device) 1 includes a driving unit 20 providing driving...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	FURUI MASAHIRO, NAKATANI TAKEHIKO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
Online-Zugang:	Volltext bestellen
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