# US 5,703,563 A · Anti-hijack system

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- Number: US 5,703,563 A
- Document ID: US5703563A
- Status: Granted
- Kind: A
- Application number: 08/598,939
- Filed: 1996-02-09
- Granted: 1997-12-30
- Earliest claimed: 1996-02-09
- Assignees: William T. Eby
- Inventors: Dennis F. Abe, Jr.
- Web page: https://patentgrep.com/patent/US5703563A

## CPC

- B60R 25/00: Fittings or systems for preventing or indicating unauthorised use or theft of vehicles (locks for vehicles E05B77/00-E05B85/00)
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

An anti-hijack system which includes a nozzle arranged to be normally hidden from view mounted on the front section of a vehicle in the window well of the front windshield in such manner that the spray therefrom will impinge upon a person outside the vehicle and in the vicinity of the driver's door. As an alternative this can also be for both the driver's side and the passenger's side. The nozzle includes a diverter positioned to provide both cone and flat patterns of spray according to the arrangement thereof, and a spiral fluid director is positioned to effect the fluid spray as it ejects from the nozzle. There is a reservoir of incapacitating fluid adapted for mounting on a vehicle and hidden from view and a pump for forcing fluid from the reservoir through the nozzle under pressure to spray the fluid outwardly of the nozzle. If desired, a hot cap type capacitor can be used to provide voltage regulation so that vehicle voltage is always available for energizing the pump.

## Claims

### Claim 1

An anti-hijack system, comprising:
a. a nozzle arranged to be normally hidden from view mounted on the front section of a vehicle in the window well of the front windshield in such manner that the spray therefrom will impinge upon a person outside the vehicle and in the vicinity of the driver's door, said nozzle including an adjustable diverter positioned to provide both cone and flat patterns of spray according to the adjustment thereof;
b. a reservoir of incapacitating fluid adapted for mounting on a vehicle and hidden from view;
c. a pump between said nozzle and pump for forcing fluid from said reservoir through said nozzle under pressure to spray said fluid outwardly of said nozzle; and
d. a hot cap type capacitor to provide voltage regulation so that 12 volts is always available for energizing the pump.

### Claim 2 (depends on 1)

An anti-hijack system as defined in claim 1, further comprising, a spiral fluid director positioned in the upstream of the exit of the nozzle to effect the fluid spray as it ejects from the nozzle.

### Claim 3 (depends on 1)

An anti-hijack system as defined in claim 1 wherein the tip of the diverter is bendable to allow its shape and inclination with respect to the remainder of the diverter to be changed thereby to change the shape and target area of the spray.

### Claim 4 (depends on 3)

An anti-hijack system as defined in claim 3 wherein an additional nozzle is arranged to be attached to or through the grille of a vehicle.

### Claim 5

An anti-hijack system, comprising:
a. a nozzle arranged to be mounted on the front section of a vehicle in such manner that the spray therefrom will impinge upon a person outside the vehicle and in the vicinity of the driver's door, said nozzle including an adjustable diverter positioned to provide both cone and flat patterns of spray according to the adjustment thereof;
b. a reservoir of incapacitating fluid adapted for mounting on a vehicle and hidden from view; and
c. a pump between said nozzle and pump for forcing fluid from said reservoir through said nozzle under pressure to spray said fluid outwardly of said nozzle.

### Claim 6 (depends on 5)

An anti-hijack system as defined in claim 5 where the nozzle is mounted on or through the grille of a vehicle.

### Claim 7 (depends on 5)

An anti-hijack system as defined in claim 5, further comprising:
d. a hot cap type capacitor to provide voltage regulation so that 12 volts is always available for energizing the pump.