TÜRÖFFNUNGS- UND TÜRSCHLIESSSYSTEM

An apparatus assists a user to move a door between closed and open states. The apparatus includes a permanent magnet provided on the door. An electromagnet is located on the door frame adjacent thereto when the door is closed and is energizable to provide a magnetic field which reinforces the perman...

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Bibliographische Detailangaben
Hauptverfasser:	SPONG, KEITH BROOKES, FULLER, GRAEME COLIN, DUNCAN, GERALD DAVID
Format:	Patent
Sprache:	ger
Schlagworte:	BLASTING BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS ORWINDOWS CHECKS FOR WINGS COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION FIXED CONSTRUCTIONS HEAT PUMP SYSTEMS HEATING ICE-BOXES KEYS LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES LOCKS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING REFRIGERATION OR COOLING REFRIGERATORS SAFES WEAPONS WINDOW OR DOOR FITTINGS WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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