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WO1999032331A1 - Systeme de securite pour vehicules - Google Patents

Systeme de securite pour vehicules Download PDF

Info

Publication number
WO1999032331A1
WO1999032331A1 PCT/AP1998/000012 AP9800012W WO9932331A1 WO 1999032331 A1 WO1999032331 A1 WO 1999032331A1 AP 9800012 W AP9800012 W AP 9800012W WO 9932331 A1 WO9932331 A1 WO 9932331A1
Authority
WO
WIPO (PCT)
Prior art keywords
security system
vehicle
vehicle security
fuel
nozzles
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.)
Ceased
Application number
PCT/AP1998/000012
Other languages
English (en)
Inventor
Charl Gregoire Fourie
Eugene Marais
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.)
Citation Trust
Original Assignee
Citation Trust
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 Citation Trust filed Critical Citation Trust
Priority to AU14741/99A priority Critical patent/AU1474199A/en
Publication of WO1999032331A1 publication Critical patent/WO1999032331A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
    • F41H9/02—Flame-throwing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/12—Occupant safety arrangements or fittings, e.g. crash pads which protect the occupants against personal attack from the inside or the outside of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • 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

Definitions

  • This invention relates to a security system for a vehicle, more specifically to a security system which will assist in preventing vehicle hijacking.
  • a conventional modus operandi is for a hijacker to approach the vehicle from at least the driver's side and usually armed with a firearm.
  • Conventional security devices fitted to vehicles are normally effective only once the hijacker has taken possession of the car and is sitting therein. Few security devices exist which disable the hijacker while still outside the car and in such a way that the hijacker is given little or no opportunity to shoot at the driver.
  • vehicle is a commercial or passenger motor vehicle unless the context indicates otherwise.
  • a vehicle security system comprising a pressurised fuel source with a plurality of nozzles in flow communication therewith and securable to a vehicle to discharge fuel from at least one side of the vehicle, an igniter to operatively cause ignition of fuel discharging from the nozzles and means to control the operation of the pressurised fuel source and the igniter.
  • control means to include a switch, preferably a foot operated switch, to operate the pressurised fuel source and the igniter; for the control means to further include a code input facility to cause activation thereof; for the code input facility to include a keypad, passive transponder or remote transmitting unit; and for an impact switch to be provided to cause emergency de-activation of the security system.
  • the igniter to include means for generating an electric spark at the nozzles; and for the nozzles to be operatively located above or below the doors of a vehicle.
  • the pressurised fuel source includes a cylinder containing liquid propane gas (LPG).
  • LPG liquid propane gas
  • a further feature according to this aspect of the invention provides for the cylinder to have a valve operable by the control means at the outlet thereto; and for the valve to be a solenoid valve.
  • the pressurised fuel source to include a pump connected to a fuel reservoir, preferably the fuel tank of a vehicle.
  • the invention also provides for a vehicle having a security system substantially as defined above.
  • Figure 1 is a bottom oblique view of a vehicle fitted with a first embodiment of a security device
  • FIG 2 is a schematic diagram of the security system shown in Figure 1 ;
  • Figure 3 is a schematic diagram of a second embodiment of a security system
  • Figure 4 is a bottom oblique view of the security system in Figure 3 fitted to a vehicle;
  • FIG. 5 is a circuit diagram for an igniter used in the security system in Figure 3.
  • a vehicle (1) in this embodiment a light delivery vehicle or bakkie, is shown in Figure 1 and has a security system (2) fitted thereto.
  • the security system (2) has a pipe (3) running transversely of the vehicle (1) on the bottom (4) thereof and substantially central with respect to the front doors (5).
  • the pipe (3) has a nozzle (6) at either end thereof and an inlet (7) extends s therefrom centrally along the length of the pipe (3).
  • the inlet (7) forms the outlet from an electrically operated pump (8) which in turn has its inlet (9) connected to the fuel line (10) of the vehicle (1).
  • the fuel line (10) extends in conventional fashion from the fuel tank (11) to the engine (not shown) of the vehicle (1).
  • An igniter (15) is located at each nozzle (6) outlet and these are operated through 0 a coil (16).
  • the pump (8) and the coil (16) are operated through a switch (17) from the battery (18) of the vehicle (1).
  • the switch (17) is located within the interior of the vehicle (1) to be operable by a foot of the driver (not shown) of the vehicle (1).
  • the pump (8) draws fuel from the fuel line (10) and projects it under pressure through the nozzles (6).
  • the igniters (15) simultaneously create a spark at the outlet of each nozzle (6) to ignite the fuel being projected therethrough. This causes a large flame which continues while the switch (17) is depressed.
  • the nozzles (6) are slightly upwardly directed so that the flame is projected towards the torso of the hijacker. Also, the nozzles produce a fairly widely dispersed spray so that flame covers a fairly large area along the side of the vehicle.
  • the security device will provide a highly effective method of disabling hijackers in the vicinity of the side of the vehicle while not causing much or any damage to the vehicle itself.
  • a second embodiment of a security system (30) is shown in Figure 3 and includes a cylinder (31) filled with liquid propane gas (LPG) having a control valve
  • Igniters (35) are located adjacent the nozzles (34).
  • Means (36) for controlling the operation of the valve (32) and the igniters (35) is provided and includes a foot operated switch (37) for activation of the system and a code input facility (38), in this embodiment a keypad, to cause activation of the control means (36).
  • the control means (36) is also provided with an impact switch to cause de-activation of the system in the event of an accident.
  • a high voltage generator (40) is associated with the igniters (35) to cause a continuous spark to be operatively created by the igniters (35).
  • a 14 000 volt high frequency AC potential is developed at the igniters (35) from a 12 volt DC supply essentially through the use of a step-up transformer driven by an AC signal.
  • the AC signal is generated by an integrated circuit (42) which is a basic pulse width modulation (PWM) circuit.
  • a potentiometer (43) and resistor (44) vary the output frequency.
  • the output from the integrated circuit (42) is amplified by MOSFETS (45) in a push-pull arrangement.
  • the step-up transformer (46) is a standard line output transformer (LOPTI).
  • Each igniter (35) is located in close proximity to a nozzle to cause a continuous spark between the igniter (35) and nozzle (34) on operation of the igniter.
  • An igniter need not be associated with each nozzle as ignition of gas at one nozzle will result in almost simultaneous ignition at adjacent nozzles.
  • An impact switch (39) is shown in more detail in Figure 6. As shown, the switch (39) includes plastics tube (50) which is operatively secured in an upright manner to a body part of a vehicle (not shown).
  • a steel ball (51) is located over the upper end of the tube (50) and has a coil spring (52) secured to the part thereof covered by the tube (50). The free end of the coil spring (52) is secured to the inner surface of the tube (50) with the coil spring (52) in a slightly compressed state.
  • a steel ring (53) extend about the ball (51) and is carried on a outwardly tapering circumferential flange (54) secured to the tube (50) partway along its length.
  • the spring (52) and ring (53) each have an electrical cable (55,56) from the control means (36) conductively secured thereto.
  • the security system is fitted to a motor vehicle (60) with the cylinder (31) stowed in the boot of the vehicle (30) and the nozzles located below the front doors (61).
  • the control means can be mounted at any convenient location with the foot operated switch (37) in close proximity to the accelerator (not shown) and the code input means (38) on the dash board or console (not shown).
  • the impact switch (39) and high voltage generator (40) will preferably be secured to the vehicle out of sight of persons in the cabin.
  • the security system (30) In use, the security system (30) must first be activated through entering a code into the keypad (38).
  • the control means (36) will preferably be linked to the ignition of the vehicle to be de-activated once a predetermined period of time has elapsed after switching the ignition off. This will assist in preventing unauthorised and inadvertent use of the control system.
  • the system can be used substantially as described with reference to the embodiment in Figures 1 and 2.
  • the foot pedal (37) is depressed twice whereupon the control means (36) causes the solenoid valve (32) to open and shortly thereafter causes the igniters (35) to create a spark and ignite gas discharging from the nozzles (34).
  • the solenoid valve (32) closes and the high voltage generator ceases to operate.
  • the impact switch is activated through the ball (51) contacting the ring (53) causing the entire security system (30) to be de-activated. This assists in avoiding inadvertent operation of the security system (30) in such events.
  • This embodiment of a security system is advantageous in that it does not rely on a pump which has more mechanical part than a solenoid valve and thus requires more maintenance. Also, LP gas ignites more readily than petrol. Furthermore, as the system is independent of the fuel system in the motor vehicle, it is easier to install and does not require modifications to be made to the existing systems.
  • the rate of discharge of gas from the cylinder can easily be varied, for example by means of a needle valve, and thus the size of flames resulting from the system can be varied according to individual needs.
  • control means can include means for remote activation thereof or be linked to an anti-theft system on the vehicle.
  • the time at which the fuel is ignited and the duration of fuel discharge a single large ignition can be created of short duration. This might prove less lethal than a continuous flame but would be largely dependent on weather conditions, especially wind conditions for successful operation.
  • fuel could be discharged through nozzles from above the doors of the vehicle although it is not as easy to conceal nozzles in this configuration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

L'invention concerne un système de sécurité pour véhicules. Selon ce système, un carburant combustible est déchargé par des buses placées sur le côté du véhicule et est enflammé pour provoquer des flammes. Ce système permet d'utiliser le carburant du réservoir du véhicule ou peut utiliser une source indépendante telle que du gaz de pétrole liquéfié.
PCT/AP1998/000012 1997-12-19 1998-12-18 Systeme de securite pour vehicules Ceased WO1999032331A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU14741/99A AU1474199A (en) 1997-12-19 1998-12-18 A security system for a vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA97/11416 1997-12-19
ZA9711416 1997-12-19

Publications (1)

Publication Number Publication Date
WO1999032331A1 true WO1999032331A1 (fr) 1999-07-01

Family

ID=25586784

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AP1998/000012 Ceased WO1999032331A1 (fr) 1997-12-19 1998-12-18 Systeme de securite pour vehicules

Country Status (2)

Country Link
AU (1) AU1474199A (fr)
WO (1) WO1999032331A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102128571A (zh) * 2011-04-12 2011-07-20 吴伟明 一种甜酒酿喷射弹

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331388A (en) * 1942-03-21 1943-10-12 First Bank And Trust Company Flame throwing equipment
WO1996011822A1 (fr) * 1994-10-13 1996-04-25 Hargest Thomas S Systeme de securite pour automobiles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2331388A (en) * 1942-03-21 1943-10-12 First Bank And Trust Company Flame throwing equipment
WO1996011822A1 (fr) * 1994-10-13 1996-04-25 Hargest Thomas S Systeme de securite pour automobiles

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FLAMETHROWER NOW AN OPTION ON S. AFRICAN CARS, 11 December 1998 (1998-12-11), <http://cnn.com/WORLD/africa/9812/11/flame.thrower.car/index.html>, XP002098570 *
HOT AND COOL, 17 November 1997 (1997-11-17), Available from Internet: <HTTP://WWW.KUSTOMS.COM/BBC/GARAGE/TECHGAR/EXFLAM>, XP002098569 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102128571A (zh) * 2011-04-12 2011-07-20 吴伟明 一种甜酒酿喷射弹

Also Published As

Publication number Publication date
AU1474199A (en) 1999-07-12

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