EP 0659293 A1 19950628 - INTRUDER DETERRENT SYSTEM.
Title (en)
INTRUDER DETERRENT SYSTEM.
Title (de)
EINBRECHER-ABSCHRECKSYSTEM.
Title (fr)
SYSTEME DISSUASIF CONTRE UNE INTRUSION.
Publication
Application
Priority
- GB 9301935 W 19930913
- GB 9219365 A 19920912
- GB 9304390 A 19930304
Abstract (en)
[origin: GB2270396A] An intruder deterrent system of the type which generates a smoke screen in response to detection of an intruder comprises: smoke screen density regulating means having a smoke screen density sensor 10 to sense the density of the smoke screen and control means 9 responsive to the sensed density to adjust the output of the smoke screen generating means to maintain the smoke screen density at a desired level. Smoke is generated by feeding a glycol/water mixture from reservoir 2 via pump 4 to a heating block 6 where it is vapourised. Pumping is cycled on and off to maintain smoke density at a desired level and may also be controlled in accordance with the temperature of the heating block 6 to ensure complete vapourisation.
IPC 1-7
IPC 8 full level
G08B 15/02 (2006.01)
CPC (source: EP)
G08B 15/02 (2013.01)
Citation (search report)
See references of WO 9407223A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
GB 2270396 A 19940309; GB 2270396 B 19950125; GB 9318924 D0 19931027; AT E146002 T1 19961215; AU 4979293 A 19940412; DE 69306406 D1 19970116; DE 69306406 T2 19970710; DK 0659293 T3 19970512; EP 0659293 A1 19950628; EP 0659293 B1 19961204; WO 9407223 A1 19940331
DOCDB simple family (application)
GB 9318924 A 19930913; AT 93919531 T 19930913; AU 4979293 A 19930913; DE 69306406 T 19930913; DK 93919531 T 19930913; EP 93919531 A 19930913; GB 9301935 W 19930913