Propellant charge container

Patent metadata

Field	Value
Publication number	US-10837741-B2
Application number	US-201716347233-A
Country	US
Kind code	B2
Filing date	Oct 19, 2017
Priority date	Nov 4, 2016
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

The disclosure relates to a charge container device, said charge container device having a volume suitable to substantially fill a barrel chamber, said charge container device is formed from a substantially rigid and combustible material, wherein said charge container device comprises at least one wall to define a cavity for the retention of at least one cartridge case, said at least one cartridge case comprising an energetic material, wherein said at least one cartridge case is arranged in a stacked formation within said charge container, the charge container device further comprising a base portion and a top portion, wherein the top portion comprises an aperture to allow for expulsion of energy and the base portion comprising an ignition means.

First claim

The invention claimed is:

1. A charge container device, said charge container device having a volume suitable to substantially fill a barrel chamber, said charge container device is constructed from a substantially rigid and combustible material, wherein said charge container device comprises at least one wall to define a cavity that retains a plurality of cases, said plurality of cases comprising an energetic material, wherein said plurality of cases are arranged in a stacked formation within the cavity defined by the at least one wall of said charge container device, the charge container device further comprising a base portion and a top portion,
wherein the top portion comprises an aperture to allow for expulsion of energy and the base portion comprising an igniter;
wherein the charge container device comprises a plurality of spacers fixed to an internal side of the at least one wall of the charge container device;
wherein a first case is laterally between a first pair of spacers;
wherein a second case is laterally between a second pair of spacers; and
wherein the first pair of spacers are not fixed to the first case.

2. The device according to claim 1 , wherein the plurality of cases comprises (i) a first fixed case at its base portion and (ii) one or more cases stacked on the fixed case, and wherein each of the one or more further cases is detachably attached to an adjacent case by one of: a hook and loop arrangement; or a linking arrangement that an extending portion of one said case and a recessed portion of another said case, wherein the extending portion reversibly inserts into the recessed portion.

3. The device according to claim 1 , wherein:
the igniter is at least one of (i) a base pad igniter, located at the base of the charge container device, or (ii) a central core igniter, located at a respective center of each one or more cases, wherein each one or more cases has a centrally located void through which the central core igniter extends; and
the device is constructed from a Nitrocellulose and Kraft paper mix, the cases are constructed from a flexible material, and the energetic material within the case is a pellet or granule.

4. A charge container device, said charge container device having a volume suitable to substantially fill a barrel chamber, said charge container device is constructed from a substantially rigid and combustible material, wherein said charge container device comprises at least one wall to define a cavity that is configured to retain a plurality of cases, one or more cases of the plurality of cases comprising an energetic material,
wherein the plurality of cases are arranged in a stacked formation within said charge container device, the charge container device further comprising a base portion and a top portion,
wherein the top portion comprises an aperture to allow for expulsion of energy and the base portion comprising an igniter,
wherein the plurality of cases comprises (i) a fixed case that is fixed at the base portion so as to be non-removable from the cavity, and (ii) one or more removable cases that are detachably attached in a stacked configuration on the fixed case,
wherein the charge container device comprises a plurality of spacers fixed to an internal side of the at least one wall of the charge container device, the plurality of spacers comprising at least (i) a first spacer and a second spacer, such that the fixed case is laterally between the first spacer and the second spacer, and (ii) a third spacer and a fourth spacer that are configured to hold a removable case under friction, and
wherein the plurality of spacers form a gap between the plurality of cases and the internal side of the at least one wall.

5. The device according to claim 4 , wherein the charge container device is constructed from a Nitrocellulose and Kraft paper mix, and wherein the cases are constructed from a flexible material.

6. The device according to claim 5 , wherein the flexible material includes one or both of cotton and polyester.

7. The device according to claim 4 , wherein:
the plurality of spacers further comprises a fifth spacer and a sixth spacer that are configured to hold another removable case under friction.

8. The device according to claim 4 , wherein the gap is between 1 mm-10 mm.

9. The device according to claim 4 , wherein the plurality of cases within the charge container device are arranged in a stack such that they are coaxially aligned with one another.

10. The device according to claim 4 , wherein the igniter is a base pad igniter, located at the base of the charge container device.

11. The device according to claim 4 , wherein:
the igniter is a central core igniter, located at the respective center of each one or more cases; and
each one or more cases has a centrally located void through which the central core igniter extends.

12. The device according to claim 4 , wherein the energetic material within the one or more cases is a pellet or granule.

13. The charge container device of claim 4 , wherein the fixed case allows the charge container device to serve as a blank training round when the charge container device is not paired with a projectile munition.

14. The charge container device of claim 4 , wherein the fixed case includes an amount of said energetic material to ensure a projectile munition paired with the charge container device will be launched a threshold distance.

15. The charge container device of claim 4 , wherein at least a first removable case is detachably attached to at least one of an adjacent second removable case or the fixed case by:
a hook and loop arrangement;
a linking arrangement that includes an extending portion of one said case and a recessed portion of another said case, wherein the extending portion reversibly inserts into the recessed portion; and/or
an arrangement configured to inhibit movement of said cases, the arrangement including a first surface of one said case and a second surface of another said case, wherein at least one of the first and second surfaces includes an abrasive surface or a surface with raised portions, and wherein the abrasive surface or surface with raised portions increases the co-efficiency of the first and second surfaces such that when the first and second surfaces are in contact with one another they are resilient to movement.

16. A charge container device, said charge container device having a volume suitable to substantially fill a barrel chamber, said charge container device is constructed from a substantially rigid and combustible material, wherein said charge container device comprises at least one wall to define a cavity that retains a plurality of cases, one or more cases of the plurality of cases comprising an energetic material,
wherein the plurality of cases are arranged in a stacked formation within said charge container device, the charge container device further comprising a base portion and a top portion,
wherein the top portion comprises an aperture to allow for expulsion of energy and the base portion comprising an igniter,
wherein the plurality of cases comprises (i) a fixed case that is fixed at the base portion so as to be non-removable from the cavity, and (ii) one or more removable cases that are detachably attached in a stacked configuration on the fixed case,
wherein the plurality of cases are inside the cavity defined by the at least one wall of the charge container device, and
wherein one or more cases of the removable cases are detachably attached to an interior side of the at least one wall of the charge container device by a detachable hook and

Assignees

• Bae Systems Plc

Inventors

• Wilton Anne Marie

Classifications

• F42B5/38 Primary

  Separately-loaded propellant charges, e.g. cartridge bags {(F42B5/16, F42B5/192 take precedence)} · CPC title

• F42B5/30

  of plastics {, i.e. the cartridge-case tube is of plastics} · CPC title

• F42B5/192 Primary

  Cartridge cases characterised by the material {of the casing wall (cartridge bags F42B5/38)} · CPC title

• F42B5/18 Primary

  Caseless ammunition; Cartridges having combustible cases · CPC title