Abstract

An ammunition belt for supplying cartridges to a firearm include a multiplicity of identical metal links, each including a first C section and two smaller length C sections connected to the lengthwise ends of the first C section. Corrugations run along the C section curve of at least one of the C sections of each link and provide substantially lower link weight. The first C section of each link is connected to the two C sections of the adjacent link by a cartridge which runs through the aligned bores of the C sections and acts as a hinge pin. Crests and valleys of the corrugations face inwardly toward the C section bore. The valleys are spaced apart on a selected pitch or have features which limit the entry into a valley of the cartridge flange when the bolt pushes a cartridge from the belt into the chamber of the firearm.

IPC Classes  ?

• F42B 39/08 - Cartridge belts
• F42B 5/28 - Cartridge cases of metal
• F41A 9/29 - Feeding of belted ammunition

Abstract

A casing for an ammunition cartridge comprises a sleeve portion and a base portion. The casing may be two-piece, where the base portion is secured to the sleeve portion by means of a nipple having a flared end. The base portion comprises a cannelure that extends lengthwise from a flange. The cannelure, which is preferably curved, is deeper than a conventional cannelure and thus the casing weight is reduced. The cannelure has a step that is adjacent the flange, for limiting inward travel of the lip of a hook of the bolt of a firearm. Alternatively, a casing may be a one-piece casing, wherein the base and sleeve are integral.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42C 19/08 - PrimersDetonators

Abstract

A casing (720) for an ammunition cartridge comprises a sleeve portion (722) and a base portion (724). The casing may be two-piece, where the base portion is secured to the sleeve portion by means of a nipple (728) having a flared end. The base portion comprises a cannelure (746) that extends lengthwise from a flange (755). The cannelure, which is preferably curved, is deeper than a conventional cannelure and thus the casing weight is reduced. The cannelure has a step (750) that is adjacent the flange, for limiting inward travel of the lip (94) of a hook (92) of the bolt (90) of a firearm. Alternatively, a casing (1020) may be a one-piece casing, wherein the base and sleeve are integral.

IPC Classes  ?

• F42B 5/28 - Cartridge cases of metal
• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42B 5/36 - Cartridge cases modified for housing an integral firing-cap
• F42C 19/08 - PrimersDetonators

Abstract

A casing (720) for an ammunition cartridge comprises a sleeve portion (722) and a base portion (724). The casing may be two-piece, where the base portion is secured to the sleeve portion by means of a nipple (728) having a flared end. The base portion comprises a cannelure (746) that extends lengthwise from a flange (755). The cannelure, which is preferably curved, is deeper than a conventional cannelure and thus the casing weight is reduced. The cannelure has a step (750) that is adjacent the flange, for limiting inward travel of the lip (94) of a hook (92) of the bolt (90) of a firearm. Alternatively, a casing (1020) may be a one-piece casing, wherein the base and sleeve are integral.

IPC Classes  ?

• F42B 5/28 - Cartridge cases of metal
• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42B 5/36 - Cartridge cases modified for housing an integral firing-cap
• F42C 19/08 - PrimersDetonators
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor

Abstract

A casing for use in a cartridge for a firearm comprises a sleeve portion and a base portion, where the base has cannelure comprised of curving surfaces. In a casing embodiment, a sleeve has cylindrical portion with a mouth for holding a bullet and an opposing end radially-running bulkhead. A nipple extends from the bulkhead and into a passageway of the base, thereby securing the sleeve to the base. The sleeve bulkhead preferably has at least one circumferential wave and contacts a distal end surface of the base, which may be planar or conical. The cannelure is characterized by a continuously curving groove bottom, a maximum groove depth diameter that is 60 to 80 percent of the base outside diameter, and a volume that is 20 to 43 percent of the volume of a like base which has no cannelure.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42C 19/08 - PrimersDetonators

Abstract

A cartridge for a firearm comprises a casing which comprises a sleeve that is mated with a base. Propellant and a bullet are contained within concavity of the sleeve. The sleeve comprises a nipple extending from a bulkhead. The nipple is flared within a passageway of the base, to hold the base and sleeve together. The base comprises a base substrate and shroud. The shroud is a ring like element around the end of the base which abuts the bulkhead of the sleeve. The shroud may provide structural strength and may be colored, textured or marked; or may hold a RFID tag.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42B 5/02 - Cartridges, i.e. cases with propellant charge and missile
• F42C 19/08 - PrimersDetonators

Abstract

A casing for use in a cartridge for a firearm comprises a sleeve and attached base. The sleeve has cylindrical portion with a mouth for holding a bullet and an opposing radially-running bulkhead from which extends a nipple that is secured within a passageway of the base by a lip at the nipple terminal end. There are one or more seal regions in the passageway. A sleeve is preferably made of austenitic stainless steel and there are differing hardness and magnetic properties along the sleeve length. Particularly for high pressure rounds, the bulkhead has a frusto-conical portion with one or more circumferential waves and mates with a conical depression in the surface of the base; optionally, a skirt around the periphery of the base provides support to the sleeve bulkhead. A base has a deep cannelure with a continuously curving groove bottom, enabling a base to be made of an iron alloy into which carbon is diffused to enable hardening, after machining.

IPC Classes  ?

• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• B21D 51/10 - Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
• B21D 51/54 - Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants
• F42B 5/28 - Cartridge cases of metal
• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42C 19/08 - PrimersDetonators

Abstract

A casing for use in a cartridge for a firearm comprises a sleeve and attached base. The sleeve has cylindrical portion with a mouth for holding a bullet and an opposing radially-running bulkhead from which extends a nipple that is secured within a passageway of the base by a lip at the nipple terminal end. There are one or more seal regions in the passageway. A sleeve is preferably made of austenitic stainless steel and there are differing hardness and magnetic properties along the sleeve length. Particularly for high pressure rounds, the bulkhead has a frusto-conical portion with one or more circumferential waves and mates with a conical depression in the surface of the base; optionally, a skirt around the periphery of the base provides support to the sleeve bulkhead. A base has a deep cannelure with a continuously curving groove bottom, enabling a base to be made of an iron alloy into which carbon is diffused to enable hardening, after machining.

IPC Classes  ?

• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• F42B 5/28 - Cartridge cases of metal
• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42C 19/08 - PrimersDetonators
• B21D 51/10 - Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
• B21D 51/54 - Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants

Abstract

A casing for use in a cartridge for a firearm comprises a sleeve and attached base. The sleeve has cylindrical portion with a mouth for holding a bullet and an opposing radially-running bulkhead from which extends a nipple that is secured within a passageway of the base by a lip at the nipple terminal end. There are one or more seal regions in the passageway. A sleeve is preferably made of austenitic stainless steel and there are differing hardness and magnetic properties along the sleeve length. Particularly for high pressure rounds, the bulkhead has a frusto-conical portion with one or more circumferential waves and mates with a conical depression in the surface of the base; optionally, a skirt around the periphery of the base provides support to the sleeve bulkhead. A base has a deep cannelure with a continuously curving groove bottom, enabling a base to be made of an iron alloy into which carbon is diffused to enable hardening, after machining.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42C 19/08 - PrimersDetonators

Goods & Services

ammunition, ammunition cartridges, ammunition casings, ammunition shells

Abstract

A casing for use in a cartridge for a firearm comprises a sleeve and attached base. The sleeve has cylindrical portion with a mouth for holding a bullet and an opposing bulkhead from which extends a nipple. At the terminal end of the nipple is a lip that radially decreases in thickness and has curved surface portions; the lip forms a first seal region within a passageway that runs through the base. Preferably a second seal zone around the nipple near the bulkhead. A bulkhead comprises a circumferential wave or ridge that creates a hollow on the surface facing the base. A sleeve is preferably made of austenitic stainless steel that has differential hardness and magnetic properties along the sleeve length; and the base has a hardness less than any portion of the sleeve.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42B 33/04 - Fitting or extracting primers in or from fuzes or charges
• F42C 19/08 - PrimersDetonators
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• F42B 33/02 - Filling cartridges, missiles, or fuzesInserting propellant or explosive charges

Abstract

A casing (220) for use in a cartridge for a firearm comprises a sleeve (222) and attached base (224). The sleeve has cylindrical portion with a mouth for holding a bullet and an opposing bulkhead (226) from which extends a nipple (228). A lip (234) that radially decreases in thickness and has curved surface portions forms a first seal region (41). Preferably a second seal zone (39) is near the bulkhead. A bulkhead (226) comprises a circumferential wave or ridge (250). A sleeve is preferably made of austenitic stainless steel and has differential hardness and magnetic properties along the sleeve length, with a least-hardness nipple.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42B 5/28 - Cartridge cases of metal
• F42B 33/02 - Filling cartridges, missiles, or fuzesInserting propellant or explosive charges
• F42B 33/04 - Fitting or extracting primers in or from fuzes or charges
• F42C 19/08 - PrimersDetonators

Abstract

A casing for use in a cartridge for a firearm comprises a sleeve and attached base. The sleeve is formed with a mouth for holding a bullet and an opposing bulkhead from which extends a nipple. The end of the nipple is flared radially outwardly within a passageway of the base, to form a special configuration lip and first seal. The nipple is shaped to make a second seal when press fitted into the passageway. A bulkhead is formed with a circumferential wave or ridge. A sleeve is preferably made from austenitic stainless steel that is worked to have differential hardness and magnetic properties along the sleeve length, with the nipple being of lesser hardness.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42B 33/04 - Fitting or extracting primers in or from fuzes or charges
• F42C 19/08 - PrimersDetonators
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• F42B 33/02 - Filling cartridges, missiles, or fuzesInserting propellant or explosive charges

Abstract

A casing (220) for use in a cartridge for a firearm comprises a sleeve (222) and attached base (224). The sleeve has cylindrical portion with a mouth for holding a bullet and an opposing bulkhead (226) from which extends a nipple (228). A lip (234) that radially decreases in thickness and has curved surface portions forms a first seal region (41). Preferably a second seal zone (39) is near the bulkhead. A bulkhead (226) comprises a circumferential wave or ridge (250). A sleeve is preferably made of austenitic stainless steel and has differential hardness and magnetic properties along the sleeve length, with a least-hardness nipple.

IPC Classes  ?

• F42B 5/285 - Cartridge cases of metal formed by assembling several elements
• F42B 5/307 - Cartridge cases of plastics formed by assembling several elements

Goods & Services

ammunition casings, ammunition shells