REDUCED ENERGY TRAINING CARTRIDGE FOR SELF-LOADING FIREARMS
First Claim
1. A reduced energy cartridge for use with a dedicated training firearm or firearm modified to a training configuration, the cartridge comprising:
- a piston sleeve defining a projectile cavity at a longitudinal end, a projectile coupled therein, and a cylindrical cavity at the second end for coupling with a primary case, wherein the sleeve further comprises a inwardly extending wall separating the projectile cavity and the cylindrical cavity at the second end, the inwardly extending wall having a central axial cylindrical bore defining a flash hole connecting the projectile cavity with the second end; and
the primary case configured as a piston and being coupled with the second end of the piston sleeve, the primary case defining a primary case cavity for coupling with a propellant unit, a propellant unit coupled in the primary case cavity for creating a quantity of propellant gas, the primary case further defining a central axial channel for conveying the quantity of propellant gas from the propellant unit when it is created in the primary case cavity to the flash hole and to the projectile in the projectile cavity, wherein the central axial channel is aligned with the flash hole to along a central longitudinal axis such that the quantity of propellant gas when created is conveyed substantially along the central longitudinal axis from the propellant unit, and the piston sleeve and primary case providing a direct open pathway along said central longitudinal axis all of the way between the propellant unit and the projectile, the primary case having an O-ring engaged with the cylindrical cavity.
16 Assignments
0 Petitions
Accused Products
Abstract
A two piece, two-stage, reduced-energy mechanically operating cartridge is provided for launching, a configured bullet choice of various compositions from a dedicated or modified firearm. The cartridge unit is comprised of a primary case having a cavity to receive a propellant unit or propellant connection and a piston sleeve having a cavity to receive the configured bullet choice, the primary case coupled to the piston sleeve. The cartridge having a retracted pre-firing state and an expanded fired state whereby the piston sleeve and primary case telescope apart forcing the firearm'"'"'s slide or bolt to the rear, a mechanical operation opposed to a conventional cartridge with gas blow back operations.
1 Citation
19 Claims
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1. A reduced energy cartridge for use with a dedicated training firearm or firearm modified to a training configuration, the cartridge comprising:
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a piston sleeve defining a projectile cavity at a longitudinal end, a projectile coupled therein, and a cylindrical cavity at the second end for coupling with a primary case, wherein the sleeve further comprises a inwardly extending wall separating the projectile cavity and the cylindrical cavity at the second end, the inwardly extending wall having a central axial cylindrical bore defining a flash hole connecting the projectile cavity with the second end; and the primary case configured as a piston and being coupled with the second end of the piston sleeve, the primary case defining a primary case cavity for coupling with a propellant unit, a propellant unit coupled in the primary case cavity for creating a quantity of propellant gas, the primary case further defining a central axial channel for conveying the quantity of propellant gas from the propellant unit when it is created in the primary case cavity to the flash hole and to the projectile in the projectile cavity, wherein the central axial channel is aligned with the flash hole to along a central longitudinal axis such that the quantity of propellant gas when created is conveyed substantially along the central longitudinal axis from the propellant unit, and the piston sleeve and primary case providing a direct open pathway along said central longitudinal axis all of the way between the propellant unit and the projectile, the primary case having an O-ring engaged with the cylindrical cavity. - View Dependent Claims (2, 3, 4, 8, 9, 10, 11)
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5. A reduced energy cartridge for use with a dedicated training firearm or firearm modified to a training configuration, the cartridge comprising:
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a piston sleeve defining a projectile cavity at a longitudinal end, a projectile coupled therein, and a cylindrical cavity at the second end for coupling with a primary case, wherein the sleeve further comprises a inwardly extending wall separating the projectile cavity and the cylindrical cavity at the second end, the inwardly extending wall having a central axial cylindrical bore defining a flash hole connecting the projectile cavity with the second end; the primary case configured as a piston and being coupled with the second end of the piston sleeve, the primary case defining a primary case cavity for coupling with a propellant unit, a propellant unit coupled in the primary case cavity for creating a quantity of propellant gas, the primary case further defining a central axial channel for conveying the quantity of propellant gas from the propellant unit when it is created in the primary case cavity to the flash hole and to the projectile in the projectile cavity, wherein the central axial channel is aligned with the flash hole along a central longitudinal axis such that the quantity of propellant gas when created is conveyed substantially along the central longitudinal axis from the propellant unit, and the piston sleeve and primary case providing a direct open pathway between the propellant unit and the projectile; wherein the inwardly extending wall has a frusto-conical surface adjoining the cylindrical bore defining the flash hole, the frusto-conical surface facing the primary case and in part defining a cavity between the primary case and the inwardly extending wall.
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6. A reduced energy cartridge for use with a dedicated training firearm or firearm modified to a training configuration, the cartridge comprising:
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a piston sleeve defining a projectile cavity at a longitudinal end, a projectile coupled therein, and a cylindrical cavity at the second end for coupling with a primary case, wherein the sleeve further comprises a inwardly extending wall separating the projectile cavity and the cylindrical cavity at the second end, the inwardly extending wall having a central axial cylindrical bore defining a flash hole connecting the projectile cavity with the second end; the primary case configured as a piston and being coupled with the second end of the piston sleeve, the primary case defining a primary case cavity for coupling with a propellant unit, a propellant unit coupled in the primary case cavity for creating a quantity of propellant gas, the primary case further defining a central axial channel for conveying the quantity of propellant gas from the propellant unit when it is created in the primary case cavity to the flash hole and to the projectile in the projectile cavity, wherein the central axial channel is aligned with the flash hole along a central longitudinal axis such that the quantity of propellant gas when created is conveyed substantially along the central longitudinal axis from the propellant unit, and the piston sleeve and primary case providing a direct open pathway between the propellant unit and the projectile; wherein the inwardly extending wall has a pair of frusto-conical surfaces adjoining the cylindrical bore defining the flash hole, one frusto-conical surface facing the projectile and one facing the primary case. - View Dependent Claims (7)
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12. (canceled)
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13. (canceled)
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14. A reduced energy cartridge for use with a dedicated training firearm or firearm modified to a training configuration, the cartridge having a retracted pre-firing state and an expanded fired state, in the retracted pre-firing state, the cartridge comprising:
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a piston sleeve defining a projectile cavity at a longitudinal end, a projectile coupled therein, the piston sleeve further defining a cylindrical cavity at the second end for coupling with a primary case, wherein the piston sleeve further comprises a wall separating the projectile cavity and the cylindrical cavity and having a central axial cylindrical bore defining a flash hole connecting the projectile cavity with the cylindrical end; and the primary case configured as a piston for coupling with the second end of the piston sleeve and having a primary case cavity for coupling with a propellant mechanism for creating a quantity of propellant gas and further having a central axial channel with a constant diameter portion for conveying the quantity of propellant gas when created from the propellant mechanism in the primary case cavity to the flash hole and then to the projectile in the projectile cavity, wherein the central axial channel is aligned with the flash hole along a central longitudinal axis such that the quantity of propellant gas when created is conveyed substantially along the central longitudinal axis from the propellant mechanism and further along a direct open pathway following the central longitudinal axis all of the way between the propellant mechanism and the projectile, the primary case and the piston sleeve, when in the prefired state, defining an open cavity between the flash hole and the central axial channel that is diametrically larger than the flash hole and diametrically larger than the constant diameter portion of the central axial channel; and a projectile positioned in the projectile cavity of the piston sleeve. - View Dependent Claims (15)
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16. (canceled)
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17. (canceled)
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18. A reduced energy cartridge for use with a dedicated training firearm or firearm modified to a training configuration, the cartridge comprising a piston and a piston sleeve having a retracted pre-firing state and an expanded fired state, in the retracted pre-firing state, the cartridge further comprising:
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projectile on one end of the piston and piston sleeve and a propellant unit on an opposite end of the piston and piston sleeve; and wherein, the cartridge in the prefired state has a direct and unimpeded path between the propellant unit and the projectile including through a flash hole that is part of the piston and piston sleeve, the direct and unimpeded path following a central longitudinal axis all of the way from the propellant unit to the projectile whereby when the cartridge is fired, a quantity of propellant gas is created at the propellant unit and travels along the central longitudinal axis all of the way to the projectile. - View Dependent Claims (19)
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Specification