EP1988518A1 - Zerstreuungsvorrichtung für forensisches Material - Google Patents

Zerstreuungsvorrichtung für forensisches Material Download PDF

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Publication number
EP1988518A1
EP1988518A1 EP08008356A EP08008356A EP1988518A1 EP 1988518 A1 EP1988518 A1 EP 1988518A1 EP 08008356 A EP08008356 A EP 08008356A EP 08008356 A EP08008356 A EP 08008356A EP 1988518 A1 EP1988518 A1 EP 1988518A1
Authority
EP
European Patent Office
Prior art keywords
smoke
forensic
pyrotechnic
particulate material
security apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08008356A
Other languages
English (en)
French (fr)
Inventor
Digby Chetwode Ram
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IBP-Group Ltd
Original Assignee
IBP-Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IBP-Group Ltd filed Critical IBP-Group Ltd
Publication of EP1988518A1 publication Critical patent/EP1988518A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B15/00—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives
    • G08B15/02—Identifying, scaring or incapacitating burglars, thieves or intruders, e.g. by explosives with smoke, gas, or coloured or odorous powder or liquid

Definitions

  • the present invention relates to a system for dispersal of forensic materials, more particularly forensically coded solid materials such as may be used in the identification of property following theft.
  • Solid materials tor identifying property may comprise minute circles of film or metal which are printed or etched in miniature with an identifying code.
  • the solid materials may comprise a specific mixture of rare earth materials. These are used to mark property, in order that the property may be identified and linked to its rightful owner, usually following loss or theft. Such materials will be described below as "forensic particulate material.”
  • Pyrotechnic smoke-dye devices are also known for use in marking property. These may be activated automatically in the event of theft, and mark with a coloured dye the property being stolen, for example bank notes.
  • a device to disperse forensic particulate material as herein defined comprising a charge of forensic particulate material, sachet means adapted to contain said forensic particulate material and pyrotechnic fuse-head means located within said sachet means and adapted to initiate dispersal of the forensic particulate material.
  • the sachet means bursts and the forensic particulate material is released.
  • the sachet means may be provided with at least one zone of increased frangibility.
  • security apparatus comprising a device as described in the first aspect above.
  • Said security apparatus may be adapted to generate smoke, optionally dyed smoke, fog, mist, vapour or the like.
  • the fuse head means of said device may be programmable to be activated before activation of the security apparatus, for example before production of smoke, fog, or the like therefrom.
  • a smoke composition, fog generator or the like may subsequently be activated and the expansion or migration of gases discharges the forensic material, for example over bank notes and/or the clothing and body of a perpetrator.
  • a dispersal device embodying the present invention comprises a fuse head 1, a pyrotechnic smoke-dye composition 2, and a compartment containing solid forensic particulate material 3. All the above are contained within a sachet 4 having a plurality of frangible zones 5, preferably located remotely from the pyrotechnic composition 2.
  • the fuse head 1 is preferably located adjacent the frangible zones 5 of the sachet 4, and is linked to the pyrotechnic smoke-dye composition 2 by an elongate fast-burning fuse 6.
  • the pyrotechnic smoke-dye composition 2 is set off by conventional means (typically in response to some form of alarm system). This initiates combustion of the fuse 6, which rapidly burns along its length and sets off the fuse head 1.
  • the fuse head 1 contains a small pyrotechnic or explosive charge which bursts open the sachet 4, for example by breaking the frangible zones 5 (or in other embodiments by blowing open flaps usually biassed closed, or by blowing open a mouth of the sachet 4 normally held closed by a weak adhesive or by the configuration of the sachet 4 itself).
  • the fuse head 1 also shakes up and disperses the particles of the forensic particulate material 3 within the compartment ( Figure 2 ).
  • the pyrotechnic smoke-dye composition 2 is burning to generate a copious stream of dyed smoke 7, which passes along the sachet 4 to exit through the frangible zones 5, etc.
  • This stream of dyed smoke 7 entrains the dispersed forensic particulate material 3, which is thus projected out of the sachet 4 with the smoke 7.
  • the smoke-dye 7 will stain its surroundings, for example dyeing a bundle of banknotes in which it has been secreted, to prevent their use by a thief.
  • a drawback of existing smoke-dye marking systems is that it may not be possible to link stained bank notes, recovered subsequently, to a particular theft.
  • a plurality of forensic particles will also be deposited on the bank notes or other property.
  • Each batch of forensic particulate material used in a device bears a unique identification means, and so one may recover a forensic particle from a stained piece of property, read off the identification means, and check back to where that particular batch was used. It is hence possible to link the recovered property to a specific event such as a theft. If the smoke-dye 7 contacts the person or clothes of a thief, then the thief can similarly be linked to the specific theft by recovering and identifying forensic particles 3 from the smoke-dye stains.
  • the pyrotechnic smoke-dye composition 2 and the fuse head 1 may be separately ignited. It is preferable that the fuse head 1 bursts before the composition 2 has begun to generate significant volumes of smoke. For example, one may program the fuse head 1 to detonate two seconds before the composition is ignited:
  • a similar sachet (not shown) .may be used in conjunction with an otherwise conventional fogging security apparatus. These apparatus fill a room or region with an opaque cloud of white smoke or fog, to obscure vision and impede or halt the progress of a crime such as a theft or a brcak-in.
  • the fog is typical a cloud of glycol vapour.
  • a fuse head 1 is detonated to disperse the forensic particulate material 3.
  • the forensic particles 3 are then entrained into the flow of smoke or fog being projected out of the fogging device.
  • the fog contains numerous forensic particles 3 which will be deposited on the person and/or clothing of the perpetrator. If a forensic particle 3 can be found on a suspect's person or possessions and tracked back to the particular batch discharged by the fogging device, the presence of the suspect can be demonstrated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
EP08008356A 2007-05-01 2008-05-02 Zerstreuungsvorrichtung für forensisches Material Withdrawn EP1988518A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0708410.6A GB0708410D0 (en) 2007-05-01 2007-05-01 Dispersal system for forensic material
GB0807879.2A GB2448982B (en) 2007-05-01 2008-04-30 Dispersal device for forensic material

Publications (1)

Publication Number Publication Date
EP1988518A1 true EP1988518A1 (de) 2008-11-05

Family

ID=38170999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08008356A Withdrawn EP1988518A1 (de) 2007-05-01 2008-05-02 Zerstreuungsvorrichtung für forensisches Material

Country Status (2)

Country Link
EP (1) EP1988518A1 (de)
GB (2) GB0708410D0 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9080842B2 (en) 2011-03-23 2015-07-14 Lennie Mitchell Human identification detection system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2319337A (en) * 1996-11-12 1998-05-20 Probe Fx Patents Limited Composition for applying to goods as tracer or identifier
GB2350152A (en) * 1999-05-15 2000-11-22 Digby Chetwode Ram Marking stolen property

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2319337A (en) * 1996-11-12 1998-05-20 Probe Fx Patents Limited Composition for applying to goods as tracer or identifier
GB2350152A (en) * 1999-05-15 2000-11-22 Digby Chetwode Ram Marking stolen property

Also Published As

Publication number Publication date
GB0807879D0 (en) 2008-06-04
GB2448982A (en) 2008-11-05
GB0708410D0 (en) 2007-06-06
GB2448982B (en) 2012-07-18

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