US3628456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellant charge for telescoped caseless ammunition having a deterrent-coated aft-end
Assignee: Hercules LLC
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Filing: 1969-09-29
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Granted: 1971-12-21
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Expires: 1989-09-29
Abstract
Abstract An improved propellant charge for telescoped caseless ammunition is provided. A telescoped caseless round is a caseless round in which the projectile is fully contained within an axial bore in the propellant charge. The propellant charge has a burning rate deterrent applied to its aft-end which results in improved ballistic performance for the round.
Inventors
- 👤 Joseph I Harrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:52
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/18; F42B5/184
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
150 words
In a telescoped round of caseless ammunition comprising a propellant charge having an axial cavity, a projectile completely housed within the axial cavity and a primer, the improvement comprising a propellant charge having a forward-end and an aftend and an aft-surface in which at least 10 percent of the total internal and external surface area of the aft-end of the propellant charge measured from the aft-surface of the propellant charge is coated with a burning rate deterrent, the aft-end of said charge being defined as that part of the propellant charge bounded from the aft-surface of the charge to the surface of the charge defined by a plane passing through both the charge and the contacting surface of the projectile housed within the charge, said contacting surface being the surface of the projectile initially contacting the barrel of a gun in which the telescoped round of caseless ammunition is fired.
Claim 2
Dependent Claim
150 words
In a telescoped round of caseless ammunition comprising a propellant charge having an axial cavity, a projectile completely housed within the axial cavity and a primer, the improvement comprising a propellant charge having a forward-end and an aftend and an aft-surface in which at least 10 percent of the total internal and external surface area of the aft-end of the propellant charge measured from the aft-surface of the propellant charge is coated with a burning rate deterrent, the aft-end of said charge being defined as that part of the propellant charge bounded from the aft-surface of the charge to the surface of the charge defined by a plane passing through both the charge and the contacting surface of the projectile housed within the charge, said contacting surface being the surface of the projectile initially contacting the barrel of a gun in which the telescoped round of caseless ammunition is fired.
Claim 3
Dependent Claim
14 words
The propellant charge of claim 1 wherein the burning rate deterrent is ethyl centralite.
Claim 4
Dependent Claim
13 words
The propellant charge of claim 1 wherein the burning rate deterrent is dinitrotoluene.
Claim 5
Dependent Claim
14 words
The propellant charge of claim 1 wherein the burning rate deterrent is dibutyl phthalate.
Claim 6
Dependent Claim
28 words
The propellant charge of claim 1 wherein all of the internal and external surface area of the aft-end of the propellant charge is coated with burning rate deterrent.
Claim 7
Dependent Claim
38 words
The propellant charge of claim 5 wherein the aft-end of the propellant charge is coated with from about 0.5 to about 5.0 percent by weight of burning rate deterrent based on the weight of the total propellant charge.
Claim 8
Dependent Claim
14 words
The propellant charge of claim 6 wherein the burning rate deterrent is ethyl centralite.
Claim 9
Dependent Claim
13 words
The propellant charge of claim 6 wherein the burning rate deterrent is dinitrotoluene.
Claim 10
Dependent Claim
14 words
The propellant charge of claim 6 wherein the burning rate deterrent is dibutyl phthalate.
Claim 11
Dependent Claim
65 words
The propellant charge of claim 6 wherein the projectile has a rotating band having a forward surface and the aft-enD of the charge is defined as that part of the propellant charge bounded from the aft-surface of the charge to the surface of the charge defined by a plane passing through the propellant charge and through the forward surface of rotating band of the projectile.
Claim 12
Dependent Claim
60 words
The propellant charge of claim 6 wherein the projectile has a guilding metal jacket and the aft-end of the charge is defined as that part of the charge bounded from the aft-surface of the charge to the surface of the charge defined by a plane passing through the propellant charge and through the base of the ogive of the projectile.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |