Well lid device opened through magnetic attraction method

The utility model discloses a well lid device opened by magnetic attraction, which comprises a strong magnetic device and a ferromagnetic well lid, the strong magnetic device comprises a permanent magnetic chuck, and the ferromagnetic well lid comprises a lid body and a plurality of ferromagnetic bl...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	PAN YEHUA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
Online-Zugang:	Volltext bestellen
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