PROPULSIVE PIPE FOR METHOD OF PROPULSIVE CONSTRUCTION

PROBLEM TO BE SOLVED: To bend a propulsive pipe in a curvature radius smaller than conventional devices by interposing flexible sections having a sherical bearing structure, in which an inner cylinder, in which an outer circumferential surface is formed in a spherical surface, is fitted onto the out...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	KABEUCHI TERUO, MUKONO KATSUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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