WO2002021068A2 - Ammunition cartridge - Google Patents

Ammunition cartridge Download PDF

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Publication number
WO2002021068A2
WO2002021068A2 PCT/ZA2001/000134 ZA0100134W WO0221068A2 WO 2002021068 A2 WO2002021068 A2 WO 2002021068A2 ZA 0100134 W ZA0100134 W ZA 0100134W WO 0221068 A2 WO0221068 A2 WO 0221068A2
Authority
WO
Grant status
Application
Patent type
Prior art keywords
ammunition
charge
projectile
closure member
preceding
Prior art date
Application number
PCT/ZA2001/000134
Other languages
French (fr)
Other versions
WO2002021068A3 (en )
Inventor
Nicolaas Cornelius Van Zyl
Original Assignee
Nicolaas Cornelius Van Zyl
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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02Cartridges, i.e. cases with charge and missile
    • F42B5/025Cartridges, i.e. cases with charge and missile characterised by the dimension of the case or the missile
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00Blasting cartridges, i.e. case and explosive
    • F42B3/10Initiators therefor
    • F42B3/113Initiators therefor activated by optical means, e.g. laser, flashlight
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02Cartridges, i.e. cases with charge and missile
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02Cartridges, i.e. cases with charge and missile
    • F42B5/08Cartridges, i.e. cases with charge and missile modified for electric ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00Details of fuzes
    • F42C19/08Primers; Detonators

Abstract

This invention relates to a charge of ammunition (10). The charge of ammunition (10) is suitable for a firearm which does not have a firing pin but instead includes a laser beam generator or the like for firing a charge of ammunition. The charge of ammunition (10) consists of a hollow body (16), a propellant in the form of a explosive charge (13) in the hollow body (16), a propellant in the form of a explosive charge (13) in the hollow body (16), an aperture (14) extending into the hollow body and a closure member (18) for closing the aperture. The closure member (18) is made of a material for allowing a laser beam to pass through it and the material consists of at least one material of the group consisting of a ceramic material, a resinous material and a polymeric material.

Description

CHARGE OF AMMUNITION

Technical Field

This invention relates to a charge of ammunition. More particularly it relates to

such a charge suitable for a firearm which does not have a firing pin but a laser

beam or the like for firing a charge of ammunition.

Background Art

A normal charge of ammunition for use in a small firearm comprises, a hollow

casing; a propellant in theform of an explosive charge in the casing; a projectile in one end of the casing and a primer in an opposite end of the casing. The

primer usually comprises a metal case with an explosive material therein.

When such a charge of ammunition is used in a normal firearm, a trigger is

pulled which causes a firing pin to strike into the primer. The primer contains a

substance which ignites when the firing pin strikes into and deforms the primer.

This ignition causes the propellant to ignite or detonate and this propels the

projectile through the barrel of the firearm

It is an object of the present invention to provide an alternative charge of

ammunition. In one preferred embodiment of the invention the charge of ammunition may be suitable for use in a firearm wherein the mechanical firing

pin is replaced by a beam of radiation such as a laser beam. Such a firearm is

described in more detail in PCT Patent Application No. PCT/ZA00/00022 which

is herein incorporated by reference.

Disclosure of the Invention

According to the present invention a charge of ammunition comprises a hollow

body; a propellant in the form of an explosive charge in the hollow body; an

aperture extending into the hollow body; and a closure member for closing the

aperture, the closure member being characterised therein that it is made of

material for allowing a laser beam to pass through it and the material comprising

at least one material of the group consisting of a ceramic material, a resinous

material and a polymeric material.

Typically the hollow body may comprise an enclosing wall member defining

opposite ends. Preferably the enclosing wall member is cylindrically shaped.

In a preferred embodiment of the invention the charge of ammunition also

includes a projectile to be driven by the propellant. The projectile may be

provided with a unique code or marking. Such a projectile can then be traced

back to the purchaser of the charge of ammunition. The code or marking may comprise a unique traceable material in the projectile, or coding of magnetic

material.

The projectile may also include means for self-propelling the projectile, thus

turning it into a rocket. Such a projectile may include a hollow chamber

including a second propellant that will ignite after the propellant of the round of

ammunition for driving the projectile, has ignited.

The shape, size and material of the projectile may vary to suit different needs

such as soft projectiles (made of lead) to expand on impact; hard points (such

as steel) to increase penetration; non-lethal projectiles such as rubber

projectiles; gas-filled projectiles which may be used for riot control; dart type

projectiles for immobilising animals or people; pellets or shot that spread when

fired; frangible projectiles that spread on impact; and explosive projectiles.

In one embodiment of the invention the hollow body may comprise a casing

which in use is received in a barrel of a firearm. The casing may comprise an

enclosing wall member defining opposite ends; and a base extending over the

one end of the wall member. The enclosing wall member may be cylindrically

shaped. In one embodiment of the invention the end of the wall member

opposite to the base may be closed. It may for example be closed to form a

blank. Preferably a projectile is provided in the end of the wall member opposite to the base to close said end. Preferably the aperture extending into

the casing is located in the enclosing wall, but preferably it is located in the

base.

The casing may be made of any suitable and/or conventional material for

making a casing of a normal round of ammunition. In one embodiment of the

invention it may be of brass. In other embodiments the casing may be made of

less pressure resistant material such as paper based material or polymeric

material. The casing may also include conventional features such as rims

and/or grooves for extracting the casing after firing.

In another embodiment of the invention wherein the charge of ammunition

includes a projectile to be driven by the propellant, the projectile may be at least

partly hollow to define the hollow body. In such cases it is not necessary to

provide a casing separate from the projectile.

In yet another embodiment of the invention the hollow body may comprise the

barrel of a firearm, the barrel defining opposite ends in the form of the muzzle

and a rear end; the explosive charge being provided in the barrel towards the

rear end; the aperture extending into the barrel being provided towards the rear

end thereof; and the closure member closing said aperture. The barrel may

comprise a cylindrical barrel wall; and a base extending over the rear end of the barrel. The aperture extending into the barrel may be located in the barrel wall,

but preferably it is located in the base of the barrel. It will be appreciated that in

this embodiment of the invention no separate casing has to be provided for the

charge of ammunition.

The propellant in the casing may comprise a conventional propellant used in a

round of ammunition. In one embodiment of the invention the propellant may

comprise B556/1 supplied by Somchem, a division of Denel (Proprietary)

Limited of South Africa.

In one embodiment of the invention the closure member may be mounted in the

aperture extending into the hollow body. In one embodiment the aperture may

become wider as it extends to the inside of the hollow body, and the aperture

may be frustum shaped. The closure member is preferably correspondingly

shaped to fit snugly into the aperture. In one embodiment of the invention the

closure member may be frustum shaped.

In an alternative embodiment of the invention the closure member may be

provided over the aperture extending into the hollow body. The closure

member may be located inside the hollow body. In one embodiment of the

invention the closure member may be planar. In an alternative embodiment the

closure member may include opposite first and second faces, the first face being received over the aperture and the second face facing into the hollow

body, and the second face including a depression therein. A depression for

receiving the closure member at least partly therein may be provided in the

hollow body on the operatively inside defined by the hollow body, thereby to

close the aperture when the closure member is received in the depression. In

one embodiment of the invention the closure member may be generally

spherically shaped and the depression may be curved to allow a snug fit of the

closure member into the depression.

The closure member may be in the form of a lens.

Preferably the closure member allows radiation other then a laser beam, such

as that from Xenon tubes, to pass through it. Preferably the closure member is

at least partly transparent, preferably it is fully transparent. In one embodiment

of the invention the closure member may be made of glass. Where the charge

of ammunition is used in a firearm which does not include a firing pin but a

beam of radiation to activate a round of ammunition, the closure member should

preferably be made of a material that allows that radiation to pass through it.

The closure member should be sufficient strength to withstand the blast of the

propellant in the hollow body when the charge of ammunition is in use fired,

thereby to retain the aperture closed. In one embodiment of the invention the closure member is operatively

associated with a primary explosive substance in the hollow body which mayor

may not be different from the propellant, the primary explosive substance being

in contact with the closure member. The primary explosive substance is

associated with the propellant in use to ignite the propellant. In one

embodiment of the invention the primary explosive substance may be coated

onto the closure member to adhere to the closure member. In one embodiment

of the invention the primary explosive substance may be adhered to the closure

member by means of an adhesive. Alternatively the primary explosive

substance may comprise a substance which was applied in liquid form to the

closure member and then dried to adhere to the closure member. In one

embodiment of the invention the primary explosive substance is different form

the propellant. The primary explosive substance may comprise VH2 supplied by

PMP a division of Denel (Proprietary) Limited of South Africa.

Preferably the primary explosive substance is a substance which ignites when a

beam of radiation such as a beam of light or a laser beam, which beam is of

sufficient strength, is directed onto it. In use the beam of sufficient strength will

originate from a firearm which does not include a firing pin but a beam of

radiation to activate the round of ammunition.

In an alternative embodiment of the invention the propellant may be sensitive enough to ignite when a beam of radiation such as a beam of light or a laser

beam, which beam is of sufficient strength, is directed onto it. In such cases a

primary explosive substance will not be required.

In one embodiment of the invention a heating means may be associated with

the closure member, which heating means in use heats up when a beam of

radiation (such as a laser beam) is directed onto it thereby causing an explosive

material in the casing to ignite. The heating means may comprise a material,

alternatively or additionally it may comprise a device such as a photvoltaic cell.

A resistive wire, bridgehead or like device may also be associated with the

photovoltaic cell or like device, which will heat up by a current produced by the

photovoltaic cell or like device when a suitable beam of radiation is directed

onto it.

The charge of ammunition may comprise shaped-charge ammunition wherein

detonation waves or shock waves propel a projectile as opposed to the

conventional gas expansion mechanism. Such a charge may include a space

between the projectile and the propellant.

According to yet another aspect of the invention there is provided a charge of

ammunition comprising a projectile; a chamber in the projectile with an opening;

an explosive material in the chamber; and a closure member for closing the opening, the closure member being characterised therein that it is made of a

material for allowing a laser beam to pass through it and that it comprises at

least one material of the group consisting of a ceramic material, a resinous

material and a polymeric material.

Examples

Without thereby limiting the scope of the invention, examples thereof will now

be described with reference to the accompanying drawings wherein:

Figure 1 is a diagrammatic sectioned side view of a charge of ammunition

according to the present invention;

Figure 2 is a diagrammatic sectioned side view of another charge of

ammunition according to the present invention;

Figure 3 is a diagrammatic sectioned side view of yet another charge of

ammunition according to the present invention;

Figure 4 is a diagrammatic sectioned side view of yet another charge of

ammunition according to the present invention; Figure 5 is a diagrammatic sectioned side view of yet another charge of

ammunition according to the present invention;

Figure 6 is a diagrammatic sectioned side view of yet another charge of

ammunition according to the present invention;

Figure 7 is a diagrammatic sectioned side view of yet another charge of

ammunition according to the present invention;

Figure 8 is a diagrammatic sectioned side view of yet another charge of

ammunition according to the present invention; and

Figure 9 is a diagrammatic sectioned side view of yet another charge of

ammunition according to the present invention;

In the accompanying drawings the same reference numerals are used to denote

corresponding parts.

The charges of ammunition of Figures 1 to 4 all include a casing similar to that

used in a conventional round of ammunition. The charges of ammunition of

Figures 5 to 9 do not include a casing similar to that used in a conventional

round of ammunition. Referring now to Figures 1 to 4 the charges of ammunition 10, 20, 30 and 40

respectively each comprises a hollow body in the form of a hollow casing 11

defining a casing wall 12. A propellant 13 in the form of an explosive charge is

provided in the casing 11. An aperture 14 extends through the casing wall 12

into the casing 11. A projectile 15 is mounted partly in the casing 11 to extend

out of the casing 11.

The casing 11 comprises an enclosing wall member 16, which is cylindrically

shaped. A base 17 extends over one end of the wall member 16 while the

projectile 15 is mounted in the otherwise open end of the wall member 16.

Accordingly the base 17 and the projectile 15 are opposite to each other.

The aperture 14 extends through the base 17 of the casing 11. The casing wall

12 may be made of any suitable material such as brass.

The propellant 13 may comprise any conventional propellant used in a round of

ammunition, such as B55 6/1 supplied by Somchem a division of Denel

(Proprietary) Limited.

In each case a closure member 18, made of a ceramic material, is provided for

closing the aperture 14. In use when a charge 10, 20, 30, or 40 is fired the

closure member 18 prevents material (including gasses) on the inside of the casing 11 to escape through the aperture 14. The ceramic material of which the

closure member 18 is made, comprises glass. The glass used is normal

window glass and preferably it is of optical quality. The glass comprises a

single layer. It is foreseen that the glass may comprise a laminated product

comprising two (or more) layers of glass with a flexible layer sandwiched

between them.

The closure member 18 is operatively associated with a primary explosive

substance 19, which is different froni the propellant 13. The primary explosive

, substance 19 is provided on the closure member and is in contact with the

propellant 13. Preferably the primary explosive substance 19 adheres to the

closure member 18 and preferably it is in line with the aperture 14. The primary

explosive substance may comprise VH2 supplied by PMP a division of Denel

(Proprietary) Limited. VH2 is in liquid form and in use it is applied to the inner

surface of the closure member 18 where it is allowed to dry.

Referring now to Figure 1 only, the aperture 14 is frustum shaped becoming

wider as it extends to the inside of the casing 11. The closure member 18 is of

a similar configuration and fits snugly into the aperture 14 to close it off.

Referring now to Figures 2 and 3, the aperture 14 is cylindrically shaped and

the closure member 14 is provided on the inside of the casing 11 to extend over the aperture 14. The closure members 14 fit snugly against the inside of the

bases 17. In Figure 4 the closure member 14 comprises a planar disc of 4mm

thickness. The closure member 14 of Figure 2 includes a hollow face 20 which

faces into the casing.

Referring now to Figure 3 the casing 11 includes a curved depression 21 on the

inside of the base 17. The depression 21 is generally hemispherical and the

closure member 14 is generally spherical to fit snugly into the depression 21.

Referring now to Figures 5 to 9 the charges of ammunition 50, 60, 70,80 and 90

do not include a casing 11 as shown in Figures 1 to 4 and can be considered to

be caseless. In these cases the propellant 13 and projectile 15 is provided

inside a barrel 22 of a firearm. The barrel 22 in each case comprises a

cylindrically shaped barrel wall 23 and opposite ends in the form of a muzzle 24

and a rear end 25. The rear end 25 has a base 26 extending over it and an

aperture 27 extends through said base 26 into the barrel 22. The closure

members 18 are made of glass and in use close the apertures 27. In Figures 5

to 8 each closure member 18 comprises a planar glass disc which is 4mm thick.

In Figure 9 the closure member 18 comprises a hollow disc. The primary

explosive substance 19 is adhered to each closure member 18 in the same way

as described with reference to Figures 1 to 4. It is foreseen that a propellant in

place of the propellant 13 may be provided which is sensitive enough in use to ignite when a beam of radiation such as laser beam is directed onto it.

The projectile 15 of Figure 5 is solid. The projectiles 15 of Figures 6 to 8 are

hollow and the propellant 13 is provided in the hollow body or chamber 28

defined in each projectile 15. The closure member 18 seals the propellant 3 in

the hollow body in the projectile 15.

Referring to Figure 5 and 9, the hollow body of the charge of ammunition 50

and 90 respectively is provided by the barrel 22, with the aperture 27 extending

into the hollow body.

Referring now to Figure 7 only, the projectile is elongate and may include flutes

or grooves [not shown] or like means to aid stability in flight. The hollow body

28 is elongate and the propellant 13 may be replaced with another propellant,

which burn or detonate at different rates. The part of the propellant in contact

with the primary explosive substance 19 may have a rapid burning rate, creating

sufficient gas pressure to expel the projectile 15 from the barrel 22 at a velocity

that will ensure stability. The remainder of the propellant may have a slower

burning rate which will create a thrust that will propel the projectile 15 in the

manner of.a rocket.

Referring now to Figure 8 only, the projectile 15 includes a chamber 29 filled with an explosive substance 30 which is in communication with the hollow body

28 by means of a conduit 31. In this case the propellant 13 may comprise a

propellant which continues to burn after the projectile leaves the barrel 22.

When all the propellant 13 has been consumed, a flash of heat will be

conducted along the conduit 31 to ignite the explosive substance 30 causing

the projectile 15 to explode and thereby fragmenting the projectile 15. The

substance 30 may also release gas used for riot control.

Referring now to Figure 9 only, the projectile 15 is hollow and a space 32 is

provided. between the projectile 15 and the propellant 13. Upon ignition of the

propellant 13 or like material, shock or detonation waves are created which will

act on the projectile to disintegrate it into particles that are propelled from the

barrel 22. This charge of ammunition 90 comprises shape-charged ammunition.

A un-fired projectile 15 of Figures 5 to 9 may be kept sealed in it position in the

barrel 22 by introducing a composition such as wax or a wax-like composition

(preferably a microcrystalline wax) of suitable melting point and viscosity into

the barrel 22. Such a composition may also lubricate the passage of the

projectile through the barrel 22.

The charges of ammunition of figures 1 to 9 are marked at the time of

manufacture. The marketing systems currently employed are all post- manufacture; a projectile is made in the conventional way and then marked by

inscribing or stamping a number/code on it, or a marked/coded item is inserted

into the body of the projectile. Any mark or code applied or inserted after

manufacture can be changed or removed.

During manufacture of the projectiles described herein, a small quantity of a

foreign substance with known properties is added to the material used for the

making of the projectiles. This foreign substance may be in the form of

magnetic particles that can be coded according to a predetermined programme

in small batches. Or the foreign substance may contain radio-active particles

introduced in small controlled batches. Different foreign substances may be

introduced in different concentrations during manufacture. Encoded microchips

or transponders may further be mixed in during casting or forming of a

projectile.

In use the charges of ammunition of Figures 1 to 9 are for use in a firearm

which includes means for providing a beam of radiation to activate the

propellant in the said charges of ammunition. The' beam of radiation preferably

comprises a laser beam which laser beam replaces the firing pin in a normal

firearm. Such a firearm is described in detail in patent application no.

PCT/ZA00/00022. In use the laser beam (or other radiation) will be directed

onto the closure member 18 through the aperture 27 or 14. The energy of the laser beam will cause the primary explosive substances 19 to ignite which in

turn will detonate the propellant 13, causing the projectile 15 to be driven

through the barrel of the firearm.

It is envisaged that the charges of ammunition described herein will be

convenient to use in that the different closure members provide a proper seal

and will protect blow back of gasses. All the gas created when the propellant is

ignited is thus used to propel the projectile. This is especially true for the

charges of ammunition shown in figures 5 to 9.

The closure members could also be formed to act as lenses to focus a radiation

bean such as a laser beam.

It will be appreciated that many variations in detail are possible without thereby

departing from the scope and spirit of the invention.

Claims

1. A charge of ammunition comprising a hollow body; a propellant in the
form of an explosive charge in the hollow body; an aperture extending
into the hollow body; and a closure member for closing the aperture,
the closure member being characterised therein that it is made of
material for allowing a laser beam to pass through it and the material
comprising at least one material of the group consisting of a ceramic
material, a resinous material and a polymeric material.
2. A charge of ammunition as claimed in claim 1 in which the hollow body
comprises an enclosing wall member having opposite ends.
3. A charge of ammunition as claimed in any one of the preceding claims
in which the enclosing wall member is cylindrically shaped.
4. A charge of ammunition as claimed in any one of the preceding claims
in which the charge of ammunition also includes a projectile to be
driven by the propellant.
5. A charge of ammunition as claimed in claim 4 in which the projectile is
provided with a unique code or marking.
6. A charge of ammunition as claimed in claim 5 in which the marking or
code is a foreign substance included in the projectile.
7. A charge of ammunition as claimed in claim 6 in which the foreign
substance is included in the projectile in a predetermined concentration
for each projectile to uniquely mark different projectiles.
8. A charge of ammunition as claimed in claim 6 in which the foreign
substance is a magnetic material.
9. A charge of ammunition as claimed in claim 6 in which the foreign
substance is included in projectiles in different patterns to uniquely
identify different projectiles.
10. A charge of ammunition as claimed in claim 5 or 6 in which the coding
or marking is a transponder included in the body of the projectile.
11. A charge of ammunition as claimed in any one of the preceding claims
in which the projectile includes means for self-propelling the projectile,
thus turning it into a rocket.
12. A charge of ammunition as claimed in claim 11 in which the a projectile
includes a hollow chamber including a second propellant that will ignite
after the propellant of the round of ammunition for driving the projectile,
has ignited.
13. A charge of ammunition as claimed in claim 12 in which the hollow
chamber is in communication with the hollow body by means of a
conduit in the projectile.
14. A charge of ammunition as claimed in claims 12 or 13 in which the
second propellant fragments the projectile upon ignition.
15. A charge of ammunition as claimed in claims 12 or 13 in which the
second propellant releases a gas for use in crowd control.
16. A charge of ammunition as claimed in any one of claims 4 to 15 in
which the projectile is a soft projectile so that it will expand on impact.
17. A charge of ammunition as claimed in any one of claims 4 to 15 in
which the projectile is made of hard material to increase penetration on
impact.
18. A charge of ammunition as claimed in any one of claims 4 to 15 in
which the projectile is a non-lethal projectile.
19. A charge of ammunition as claimed in claim 18 in which the projectile is
made of a plastics or a rubber material.
20. A charge of ammunition as claimed in any one of claims 4 to 15 in
which the projectile is a gas-filled projectile for use in crowd or riot
control.
21. A charge of ammunition as claim in any one of claims 4 to 15 in which
dart type projectiles for immobilising animals or people.
22. A charge of ammunition as claimed in any one of claims 4 to 15 in
which the projectile includes pellets or shot that spread out when fired.
23. A charge of ammunition as claimed in any one of claims 4 to 15 in
which the projectile is a frangible projectile that spreads out on impact.
24. A charge of ammunition as claimed in any one of claims 4 to 15 in
which the projectile is an explosive projectile.
25. A charge of ammunition as claimed in any one of the preceding claims
in which the hollow body comprises a casting which in use is received in a barrel of a firearm..
26. A charge of ammunition as claimed in claim 25 in which the casting
comprises an enclosing wall member defining opposite ends; and a
base extending over the one end of the wall member.
27. A charge of ammunition as claimed in claim 26 in which the enclosing
wall member is cylindrically shaped.
28. A charge of ammunition as claimed in claim 26 or 27 in which the end
of the wall member opposite to the base is closed to form a blank.
29. A charge of ammunition as claimed in claim 28 in which the projectile is
located in the end of the wall member opposite to the base to close said
end.
30. A charge of ammunition as claimed in claim 28 or.29 in which the
aperture extending into the casing is located in the enclosing wall.
31. A charge of ammunition as claimed in claim 30 in which the aperture extending into the casing is located in the base of the enclosing wall.
32. A charge of ammunition as claimed in any one of the claims 25 to 31 in
which the casing is made of any suitable or conventional material for
making a casing of a normal round of ammunition.
33. A charge of ammunition as claimed in claim 32 in which the casing is
made of brass.
34. A charge of ammunition as claimed in claim 32 in which the casing is
made of a paper based material.
35. A charge of ammunition as claimed in claim 32 in which the casing is
made of a polymeric material.
36. A charge of ammunition as claimed in any one of the claims 25 to 3 tin
which the casing has rims and/or grooves for extracting the casing from
a firearm after firing.
37. A charge of ammunition as claimed in claim 1 including a projectile to
be driven by the propellant, the projectile being at least partly hollow.
38. A charge of ammunition as claimed in claim 1 in which the hollow body
comprises the barrel of a firearm, the barrel defining opposite ends in
the form of the muzzle and a rear end; the explosive charge being
provided in the barrel towards the rear end; the aperture extending into
the barrel being provided towards the rear end thereof; and the closure
member closing said aperture.
39. A charge of ammunition as claimed in claim 38 in which the barrel may
comprise a cylindrical barrel wall; and a base extending over the rear
end of the barrel.
40. A charge of ammunition as claimed in any of the claims 38 to 39 in
which the aperture extending into the barrel is located in the barrel wall.
41. A charge of ammunition as claimed in claim 40 in which the aperture
extending into the barrel is located in the barrel wall in the base of the
barrel.
42. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is mounted in the aperture extending into
the hollow body.
43. A charge of ammunition as claimed in any one of the preceding claims
in which the aperture widens as it extends into the hollow body.
44. A charge of ammunition as claimed in any one of the preceding claims r in which the aperture is frustum shaped.
45. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is complimentary shaped to fit snugly into
the aperture.
46. A charge of ammunition as claimed in any one of the claims 1 to 41 in
which the closure member extends over the aperture extending into the
hollow body.
47. A charge of ammunition as claimed in claim 46 in which the closure
member is located inside the hollow body.
48. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is planar.
49. A charge of ammunition as claimed in any one of the claims 1 to 47 in
which the closure member has opposite first and second faces, the first face being received over the aperture and the second face facing the
hollow body and the second face including a depression therein.
50. A charge of ammunition as claimed in any one of the preceding claims
in which the hollow body includes a depression on its inside for
receiving the closure member at least partially therein to close the
aperture when the closure member is received in the depression.
51. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is spherically shaped.
52. A charge of ammunition as claimed in claim 50 in which the depression
is curved to allow a snug fit of the closure member in the depression.
53. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is a lens.
54. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is at least partially transparent.
55. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is made of glass.
56. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is made of a material that allows radiation
to pass through it.
-.
57. A charge of ammunition as claimed in any one of the preceding claims
in which the closure member is operatively associated with a primary
explosive substance that is in contact with the closure member.
58. A charge of ammunition as claimed in any one of the preceding claims
in which a primary explosive substance is coasted on the closure
member.
59. A charge of ammunition as claimed in any one of the preceding claims
in which the primary explosive substance is the same substance as the
explosive charge.
60. A charge of ammunition as claimed in any one of the preceding claims
in which a primary explosive substance is associated with the
propellant in use to ignite the propellant.
61. A charge of ammunition as claimed in any one of the preceding claims in which a primary explosive substance is adhered to the closure
member by means of an adhesive.
62. A charge of ammunition as claimed in any one of the preceding claims
in which a primary explosive substance comprises a substance which
was applied in liquid form to the closure member and then dried to
adhere to the closure member.
63. A charge of ammunition as claimed in any one of the preceding claims
in which a primary explosive substance associated with the closure member is different from the propellant.
64. A charge of ammunition as claimed in any one of the preceding claims
in which a primary explosive substance associated with the closure
member comprises VH2 supplied by PMP a division of Denel
(Proprietary) Limited of South Africa.
65. A charge of ammunition as claimed in any one of claims 57 to 64 in
which the primary explosive substance is a substance which ignites
when a beam of radiation such as a beam of light or a laser beam,
which beam is of sufficient strength, is directed onto it.
66. A charge of ammunition as claimed in any one of the claims 1 to 56 in
which the propellant is sensitive enough to ignite when a beam of
radiation such as a beam of light or a laser beam, which beam is of
sufficient strength, is directed onto it.
67. A charge of ammunition as claimed in any one of the proceeding claims
in which a heating means is associated with the closure member, which
heating means in use heats up when a beam of radiation is directed
onto it thereby causing an explosive material in the casing to ignite.
68. A charge of ammunition as claimed in claim 67 in which the heating
means is a voltaic cell.
69. A charge of ammunition as claimed in claim 68 which the voltaic cell
includes a resistive element.
70. A charge of ammunition as claimed in any one of the preceding claims
in which the charge of ammunition comprises shaped charged
ammunition wherein detonation waves or shock waves propel the
projectile, with a space between the projectile and the propellant.
71. A charge of ammunition comprising a projectile; a chamber in the projectile with an opening; an explosive material in the chamber; and a
closure member for closing the opening, the closure member being
characterised therein that it is made of a material for allowing a laser
beam to pass through it, the material comprising at least one material of
the group consisting of a ceramic material, a resinous material and a
polymeric material.
PCT/ZA2001/000134 2000-09-04 2001-09-04 Ammunition cartridge WO2002021068A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ZA200002572 2000-09-04
ZA2000/2572 2000-09-04

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU9331901A AU9331901A (en) 2000-09-04 2001-09-04 Charge of ammunition
ZA200301618A ZA200301618B (en) 2000-09-04 2003-02-27 Charge of ammunition

Publications (2)

Publication Number Publication Date
WO2002021068A2 true true WO2002021068A2 (en) 2002-03-14
WO2002021068A3 true WO2002021068A3 (en) 2002-12-27

Family

ID=25588759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2001/000134 WO2002021068A3 (en) 2000-09-04 2001-09-04 Ammunition cartridge

Country Status (1)

Country Link
WO (1) WO2002021068A3 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212339A (en) * 1992-03-27 1993-05-18 The United States Of America As Represented By The United States Department Of Energy Explosive laser light initiation of propellants
DE4412257A1 (en) * 1994-04-07 1994-08-25 Ruediger Giese Automatic, revolver-like firearm, as well as a metal caseless projectile for such a firearm
US5421264A (en) * 1992-09-15 1995-06-06 Colt's Manufacturing Company Inc. Firearm cartridge with pre-pressurizing charge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212339A (en) * 1992-03-27 1993-05-18 The United States Of America As Represented By The United States Department Of Energy Explosive laser light initiation of propellants
US5421264A (en) * 1992-09-15 1995-06-06 Colt's Manufacturing Company Inc. Firearm cartridge with pre-pressurizing charge
DE4412257A1 (en) * 1994-04-07 1994-08-25 Ruediger Giese Automatic, revolver-like firearm, as well as a metal caseless projectile for such a firearm

Also Published As

Publication number Publication date Type
WO2002021068A3 (en) 2002-12-27 application

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