GB2459513A

GB2459513A - Electrically powered alarm sprays odorous ultraviolet fluid at an aggressor

Info

Publication number: GB2459513A
Application number: GB0807635A
Authority: GB
Inventors: John Alfred Worthington
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-26
Filing date: 2008-04-26
Publication date: 2009-10-28
Also published as: GB0807635D0

Abstract

An electrically powered alarm, as used for personal and property protection, houses a container 1 of odorous ultraviolet fluid 3 having a synthetic DNA identifier. The container 1 has an integral pump 7 that is operated electromechanically 6 from the alarm (e.g. by a solenoid) and after use the whole assembly 1, 2, 4, 5, which has contained and subsequently expelled the fluid 3, can be replaced by another unit. Only when the pump 7 is operated by the electromechanical device 6 is there any fluid 3 under pressure and therefore ready to spray 5 at an intruder or aggressor.If any traces of UV and DNA fluid are found present on the skin or clothing of a suspect they can provide a forensic link between the perpetrator and the scene of the crime.

Description

I

DESCRIPTION

This invention relates to an electrical alarm which can be used for both personal and property protection.

In the case of a personal alarm it would be carried in the hand and on the depression of a switch or trigger, the alarm would produce an ear piercing sound and an ultra violet and synthetic DNA solution would be sprayed towards an aggressor.

In the case of a property alarm it would normally be mounted over a door and when the presence of an intruder was sensed, the alarm would be sounded and an ultra violet and synthetic DNA solution would be sprayed downwards towards the intruder.

In both cases the alarm would be electrically powered and the (JV/DNA solution would be held in a container fitted with a pump which in order to discharge the fluid, would be activated electro-mechanically from within the alarm. The UV/DNA solution could be either aqueous or spirit based with an added odorous repellent if so required. The container and pump would be permanently secured together to avoid any possible DNA leakage and the solution in the container would normally be at ambient conditions except when the pump is being electro-mechanically activated by a solenoid or similar device within the electrical alarm.

After use the empty container with pump, actuator and discharge tube can be replaced with another unit having a new DNA code. Since the complete assembly which is in contact with DNA is replaced, there is no risk of the new container and its DNA being contaminated.

Figure 1 shows a personal alarm which is battery powered and activated when trigger (8) is depressed, and within its casing is a container (1), which is fitted with a pump (2), and having an odorous fluid (3) and/or UV and DNA identifier which can be sprayed through actuator (4) and out towards an aggressor through discharge tube (5). The fluid (3) in the container is held at ambient pressure conditions in the non activated mode.

The container and pump are not connected mechanically or electrically to the alarm but the container is suitably housed in the same plastic case as the electrical alarm and firmly aligned so that the movement of the electro-mechanical (6) device, when energised, will result in the depression of the pump plunger (7) and so creating discharge of the fluid towards an aggressor.

Figure 4 shows an electrical alarm's spray facility which can be mounted overhead. In this instance the container (10) would have a relatively large fluid capacity and the discharge from the pump (II) would be directed downwards. An electra-mechanical device such as a solenoid (12) would be energised when the alarm is activated and so repeatedly depressing the canister in order to discharge the UV/DNA fluid. After discharge the canister and pump assembly, and discharge nozzle (13) can be replaced with another container assembly having a new DNA code without risk of DNA contamination and without affecting the electrical alarm. The container and pump unit are not subject to a residual pressure, it is only when the electrical alarm is activated that pressure is generated within the pump in order to spray the contents towards an intruder or aggressor.

Whilst both types of alarm have been shown with containers being depressed the same result could be achieved if fluid containers were static and actuators depressed.

Claims

CLAIMS1. An electrically powered alarm, emitting an ear piercing sound, for either personal or property protection which incorporates a container with a mechanical pump, which is pulsed from an electro-mechanical device within the alarm, resulting in the odorous and identifying liquid being pressurised and sprayed at an intruder or aggressor.
2. The container pump unit and discharge pipe, as in claim 1, can be detached from the assembly in one piece without affecting the functionality of the electrical alarm.
3. The container with pump, actuator and discharge tube, as in claims I & 2, can be replaced in their entirety with a new unit having a new DNA code, without any risk of contamination.
4. The sealed container with pump and fluid as in claims 1, 2 & 3, would be at ambient conditions when the alarm is in the non activated mode.