EP 0070883 A4 19840529 - PHOTOELECTRIC OBSTRUCTION DETECTOR FOR ELEVATOR DOORWAYS.
Title (en)
PHOTOELECTRIC OBSTRUCTION DETECTOR FOR ELEVATOR DOORWAYS.
Title (de)
FOTOELEKTRISCHER HINDERNISDETEKTOR FÜR FAHRSTUHLTÜREN.
Title (fr)
DETECTEUR PHOTO-ELECTRIQUE D'OBSTRUCTION POUR PORTES D'ASCENSEURS.
Publication
Application
Priority
AU PE753381 A 19810210
Abstract (en)
[origin: WO8202787A1] In the entranceway between an elevator car and a floor are two oppositely sliding doors (10, 20). The approach of these doors is controlled by a detection system that senses the presence of objects between the doors. This system includes, on each door, a plurality of emitters (12, 22) which are vertically spaced apart the door edge (11, 21), for radiating non-collimated light towards the edge of the other door. At the top and bottom portions of each door edge there is a sensor (13, 23), which can receive the radiation for the emitters on the other door edge. The emitters on each door edge are sequentially turned on and the sensors on the opposite door edge provide a corresponding signal as they are turned on, unless an obstruction is in the way, causing the detection system to generate a signal that thus indicates that an objet is between the doors.
IPC 1-7
IPC 8 full level
B66B 13/26 (2006.01); E05F 15/00 (2006.01); G01V 8/20 (2006.01); G08B 13/18 (2006.01)
CPC (source: EP)
B66B 13/26 (2013.01); E05F 15/43 (2015.01); E05F 2015/434 (2015.01); E05Y 2900/104 (2013.01)
Citation (search report)
- [X] EP 0011744 A1 19800611 - SICK OPTIK ELEKTRONIK ERWIN [DE]
- [X] US 3858043 A 19741231 - SICK ERWIN [DE], et al
- [AP] US 4266124 A 19810505 - WEBER DANIEL R, et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 8202787 A1 19820819; CA 1241404 A 19880830; DE 3277425 D1 19871105; EP 0070883 A1 19830209; EP 0070883 A4 19840529; EP 0070883 B1 19870930; ES 509497 A0 19830201; ES 8303601 A1 19830201; JP H0423233 B2 19920421; JP S58500039 A 19830106
DOCDB simple family (application)
US 8200113 W 19820128; CA 395793 A 19820208; DE 3277425 T 19820128; EP 82900762 A 19820128; ES 509497 A 19820210; JP 50079982 A 19820128