Abstract

Small-, medium-, and large-caliber combustible cartridge cases and propellant combustible containers that are manufactured using reactive injection molding of azido polymers. An injection process for a single propellant combustible charge including the steps of: providing a quantity of azido bearing polymer; providing a quantity of curing agent; optionally providing a quantity of chemical blowing agent; optionally providing a quantity of fibers; optionally providing a quantity of additives and catalysts; and providing a mold defining a male cavity, a female cavity, and an injection port. The injection process further includes mixing together the azido bearing polymer, the curing agent, the optional chemical blowing agent, the optional fibers, the optional additives and catalysts, and injecting the resulting mixture into the mold.

IPC Classes  ?

• B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
• B29C 45/17 - Component parts, details or accessoriesAuxiliary operations
• F42B 5/188 - Manufacturing processes therefor
• F42B 5/192 - Cartridge cases characterised by the material used

Goods & Services

Ammunition.

Goods & Services

Ammunition.

Goods & Services

Ammunition

Goods & Services

(1) Ammunition

Goods & Services

Ammunition

Goods & Services

Ammunition

Abstract

A method of manufacturing a multi-layered propellant grain is provided. The method of the present disclosure simplifies the setup necessary to produce multi-layered propellants by using industrial equipment that is more energy and space efficient than the machinery that is conventionally employed for such processes. The method comprises providing a first propellant formulation; providing a die configured to provide a structure having an outer shell and a hollow interior when material is extruded therethrough; extruding the first propellant formulation through said die, to produce a first propellant layer having an outer shell defining a hollow interior in the form channel having open ends; providing a second propellant formulation, said second propellant formulation being of low viscosity; injecting said second propellant formulation into said channel defined by said first propellant layer to form a second propellant layer disposed in said channel; and hardening said second propellant layer. The first and second propellant layers have different rates of burning.

IPC Classes  ?

• C06B 21/00 - Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
• C06B 45/12 - Compositions or products which are defined by structure or arrangement of component or product having contiguous layers or zones
• C06B 25/18 - Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition
• B29C 48/475 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams

Abstract

A method of manufacturing a multi-layered propellant grain is provided. The method of the present disclosure simplifies the setup necessary to produce multi-layered propellants by using industrial equipment that is more energy and space efficient than the machinery that is conventionally employed for such processes. The method comprises providing a first propellant formulation; providing a die configured to provide a structure having an outer shell and a hollow interior when material is extruded therethrough; extruding the first propellant formulation through said die, to produce a first propellant layer having an outer shell defining a hollow interior in the form channel having open ends; providing a second propellant formulation, said second propellant formulation being of low viscosity; injecting said second propellant formulation into said channel defined by said first propellant layer to form a second propellant layer disposed in said channel; and hardening said second propellant layer. The first and second propellant layers have different rates of burning.

IPC Classes  ?

• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• B29C 47/06 - Multilayered articles
• C06C 9/00 - Chemical contact ignitersChemical lighters
• F42B 5/16 - Cartridges, i.e. cases with propellant charge and missile characterised by composition or physical dimensions or form of propellant charge or powder

Abstract

A method of manufacturing a multi-layered propellant grain is provided. The method of the present disclosure simplifies the setup necessary to produce multi-layered propellants by using industrial equipment that is more energy and space efficient than the machinery that is conventionally employed for such processes. The method comprises providing a first propellant formulation; providing a die configured to provide a structure having an outer shell and a hollow interior when material is extruded therethrough; extruding the first propellant formulation through said die, to produce a first propellant layer having an outer shell defining a hollow interior in the form channel having open ends; providing a second propellant formulation, said second propellant formulation being of low viscosity; injecting said second propellant formulation into said channel defined by said first propellant layer to form a second propellant layer disposed in said channel; and hardening said second propellant layer. The first and second propellant layers have different rates of burning.

IPC Classes  ?

• B29C 45/16 - Making multilayered or multicoloured articles
• C06C 9/00 - Chemical contact ignitersChemical lighters
• F42B 5/16 - Cartridges, i.e. cases with propellant charge and missile characterised by composition or physical dimensions or form of propellant charge or powder
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor

Abstract

The present disclosure relates to a continuous extrusion process for producing a celluloid article including several steps and a celluloid article prepared by the continuous extrusion process.

IPC Classes  ?

• B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders

Abstract

The present disclosure relates to a continuous extrusion process for producing a celluloid article including several steps and a celluloid article prepared by the continuous extrusion process.

IPC Classes  ?

• B29C 47/40 - using at least two intermeshing screws
• B29C 47/76 - Venting or degassing means
• B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
• B29C 71/00 - After-treatment of articles without altering their shapeApparatus therefor
• B29C 47/10 - Feeding the material to the extruder
• B29C 47/92 - Measuring, controlling or regulating
• C06B 31/22 - Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate with a nitrated organic compound the compound being nitrocellulose
• C06B 21/00 - Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
• C06B 25/18 - Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition
• D01F 2/26 - Monocomponent artificial filaments or the like of cellulose or cellulose derivativesManufacture thereof from cellulose derivatives from nitrocellulose
• C06B 31/54 - Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition with other nitrated organic compound
• C06B 31/52 - Compositions containing an inorganic nitrogen-oxygen salt the salt being ammonium nitrate with a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition
• C08B 5/02 - Cellulose nitrate
• C08L 1/18 - Cellulose nitrate
• B29C 47/08 - Component parts, details or accessories; Auxiliary operations
• B29C 47/42 - using sub-screws, e.g. planetary screws
• B29K 1/00 - Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
• B29K 105/00 - Condition, form or state of moulded material

Abstract

The present disclosure relates to a continuous extrusion process for producing a celluloid article including several steps and a celluloid article prepared by the continuous extrusion process.

IPC Classes  ?

• B29C 47/40 - using at least two intermeshing screws

Abstract

Propellant compositions are provided herein for use in small arms cartridges. Such propellant compositions include from about 70 to about 90% by weight of a cellulose-based organic fuel, from about 5 to about 30% by weight of a non-azide, nitrogen-containing primary organic oxidizer and from about 0.5 to about 10.0% by weight of a secondary nitrate, perchlorate, chlorate or peroxide oxidizer. Preferably, such compositions are in the form of extruded shaped hollow cylindrical grains having a length in the range of 0.030 to 0.200 inch, a diameter in the range 0.040 to 0.070 inch, and having a coaxial opening there through having a wall grain thickness in the range 0.008 to 0.016 inch. Ignition grains are also provided for use alone or in a mixture with the propellant compositions. When used in a small caliber firearm or muzzleloader, the temperature of combustion is at a level that ensures substantially complete combustion of the fuel during firing so that the products of combustion are mostly gaseous.

IPC Classes  ?

• C06B 45/36 - Compositions or products which are defined by structure or arrangement of component or product comprising a coated component the component base containing both an organic explosive or thermic component and an inorganic explosive or thermic component
• C06B 31/00 - Compositions containing an inorganic nitrogen-oxygen salt
• C06B 31/02 - Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate
• C06B 31/22 - Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate with a nitrated organic compound the compound being nitrocellulose
• C06B 29/00 - Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate
• C06B 29/02 - Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal
• D03D 23/00 - General weaving methods not special to the production of any particular woven fabric or the use of any particular loomWeaves not provided for in any other single group
• D03D 43/00 - Looms with change-boxes

Abstract

Propellant compositions are provided herein for use in small arms cartridges. Such propellant compositions include from about 70 to about 90 % by weight of a cellulose-based organic fuel, from about 5 to about 30 % by weight of a non-azide, nitrogen-containing primary organic oxidizer and from about 0.5 to about 10.0 % by weight of a secondary nitrate, perchlorate, chlorate or peroxide oxidizer. Preferably, such compositions are in the form of extruded shaped hollow cylindrical grains having a length in the range of 0.030 to 0.200 inch, a diameter in the range 0.040 to 0.070 inch, and having a coaxial opening there through having a wall grain thickness in the range 0.008 to 0.016 inch. Ignition grains are also provided for use alone or in a mixture with the propellant compositions. When used in a small caliber firearm or muzzleloader, the temperature of combustion is at a level that ensures substantially complete combustion of the fuel during firing so that the products of combustion are mostly gaseous.

IPC Classes  ?

• C06B 31/22 - Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate with a nitrated organic compound the compound being nitrocellulose
• C06B 29/20 - Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal with a nitrated organic compound the compound being nitrocellulose
• F42B 5/00 - Cartridge ammunition, e.g. separately-loaded propellant charges

Abstract

Propellant compositions are provided herein for use in modem in-line muzzleloaders. Such propellant compositions include from about 70 to about 90 % by weight of a cellulose-based organic fuel, from about 5 to about 30 % by weight of a non-azide, nitrogen-containing solid primary organic oxidizer and from about 0.5 to about 10.0 % by weight of a mineral-based secondary nitrate, perchlorate, chlorate or peroxide oxidizer. Preferably, such compositions are in the form of extruded shaped hollow cylindrical grains having a length in the range of 0.030 to 0.200 inch (0.0762 to 0.508 centimeters), a diameter in the range 0.040 to 0.070 inch (0.1016 to 0.1778 centimeters), and having a coaxial opening there through having a wall grain thickness in the range 0.008 to 0.016 inch (0.02032 to 0.04064 centimeters). Ignition grains are also provided for use alone or in a mixture with the propellant compositions. When used in a muzzleloader, the temperature of combustion is at a level that ensures substantially complete combustion of the fuel during firing so that the products of combustion are mostly gaseous.

IPC Classes  ?

• C06B 29/20 - Compositions containing an inorganic oxygen-halogen salt, e.g. chlorate, perchlorate of an alkali metal with a nitrated organic compound the compound being nitrocellulose
• C06B 31/22 - Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate with a nitrated organic compound the compound being nitrocellulose
• F42B 5/00 - Cartridge ammunition, e.g. separately-loaded propellant charges