EP 0419229 A2 19910327 - Improvements in or relating to signalling devices.
Title (en)
Improvements in or relating to signalling devices.
Title (de)
Verbesserungen bei Anzeigevorrichtungen.
Title (fr)
Améliorations relatives aux dispositifs de signalisation.
Publication
Application
Priority
GB 8921294 A 19890920
Abstract (en)
A signalling device (1,2), such as a traffic cone, is constructed from a plastics material containing a fluorescent dye and bearing a marking (4). Light incident upon the device (1,2) causes flurorescence within the dye and fluorescent light so generated is constrained within the material such that the majority may only leave the device (1,2) via the marking (4).
IPC 1-7
IPC 8 full level
E01F 13/00 (2006.01); C09K 11/00 (2006.01); E01F 9/00 (2016.01); E01F 9/608 (2016.01); E01F 9/615 (2016.01); E01F 9/654 (2016.01); E01F 9/688 (2016.01); E01F 13/02 (2006.01); E01F 13/04 (2006.01); G09F 13/16 (2006.01); G09F 13/20 (2006.01); G09F 13/04 (2006.01)
CPC (source: EP)
E01F 9/654 (2016.02); E01F 9/688 (2016.02); G09F 13/0472 (2021.05); G09F 13/20 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0419229 A2 19910327; EP 0419229 A3 19910612; GB 8921294 D0 19891108; GB 9009208 D0 19900620; JP H03151406 A 19910627
DOCDB simple family (application)
EP 90310241 A 19900919; GB 8921294 A 19890920; GB 9009208 A 19900424; JP 24902290 A 19900920