Safety mechanism for electric roller shutter

The invention discloses a safety mechanism for an electric roller shutter. The safety mechanism is characterized by comprising a ground beam connected to the lower surface of the roller shutter; the safety mechanism is characterized in that the ground beam comprises a lower beam and an upper beam; t...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	DU YONGFA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL FIXED CONSTRUCTIONS FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES LADDERS
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