EP 1119835 B1 20030129 - DEVICE FOR SIGNALLING SPATIAL SEPARATION OR CLOSENESS BEYOND OR WITHIN A PREDETERMINED LIMIT
Title (en)
DEVICE FOR SIGNALLING SPATIAL SEPARATION OR CLOSENESS BEYOND OR WITHIN A PREDETERMINED LIMIT
Title (de)
RÄUMLICHE TRENN- ODER ANNÄHERUNGSWARNVORRICTUNG ÜBER ODER UNTER EINEM VORBESTIM-MTEN LIMIT
Title (fr)
DISPOSITIF D'AVERTISSEMENT DE SEPARATION OU DE RAPPROCHEMENT SPATIAL AU-DELA OU EN-DE A D'UNE LIMITE PREDETERMINEE
Publication
Application
Priority
- FR 9902399 W 19991007
- FR 9812555 A 19981007
Abstract (en)
[origin: US6472986B1] A first unit (10) comprises a first transmitter (12) for wireless transmission of a signal in the from of periodic frames comprising identity information encoded in varying form in each frame, and a second unit (20) comprises a first receiver (22) for receiving said signal and for causing an alarm (29) to operate in response to failure to receive or to recognize identity information. Means (16, 26, 15a, 25a, 15b, 25b) are provided for automatically deactivating at least one of the first and second units when they are physically close together, and for automatically activating said units when they are physically separate from each other.
IPC 1-7
IPC 8 full level
G08B 13/14 (2006.01); G08B 21/24 (2006.01); G08B 25/00 (2006.01); G08B 25/10 (2006.01)
CPC (source: EP US)
G08B 13/1427 (2013.01 - EP US); G08B 21/0227 (2013.01 - EP US); G08B 21/0247 (2013.01 - EP US); G08B 21/24 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6472986 B1 20021029; AT E232003 T1 20030215; CA 2346650 A1 20000413; CA 2346650 C 20071127; DE 69905183 D1 20030306; DE 69905183 T2 20040115; EP 1119835 A1 20010801; EP 1119835 B1 20030129; ES 2192416 T3 20031001; FR 2784485 A1 20000414; FR 2784485 B1 20010223; JP 2002526873 A 20020820; WO 0021049 A1 20000413
DOCDB simple family (application)
US 82145901 A 20010406; AT 99970195 T 19991007; CA 2346650 A 19991007; DE 69905183 T 19991007; EP 99970195 A 19991007; ES 99970195 T 19991007; FR 9812555 A 19981007; FR 9902399 W 19991007; JP 2000575097 A 19991007