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US3575112A
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US
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Segmented propellant charge for telescoped caseless ammunition
Assignee: Hercules LLC
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Filing: 1968-09-30
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Granted: 1971-04-13
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Expires: 1988-09-30
Abstract
Abstract A segmented propellant charge for telescoped caseless ammunition is provided. The propellant charge is prepared from at least two sections of molded propellant granules having differing burning rates. These sections are united in order of increasing burning rate to form the segmented propellant charge. The segmented propellant charge provides increased ballistic efficiency for telescoped caseless ammunition.
Inventors
- 👤 Leonard J Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:46
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/18; F42B5/184
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
In a round of telescoped caseless ammunition having in combination a propellant charge having an axial bore throughout its length, a projectile housed entirely within the axial bore of the propellant charge and a primer positioned behind the base of the projectile, the improvement comprising a segmented propellant charge comprising at least a forward-section and an aft-section of propellant, each propellant section comprising molded propellant granules said granules having a burning rate different from that of the molded propellant granules comprising the other propellant sections, said propellant sections united in order of increasing burning rate to form the segmented propellant charge, the section of molded propellant prepared from propellant granules having the slowest burning rate being the aft-section of the propellant charge said segmented propellant charge Incrementally breaking up into propellant granules from the aftsection to the forward-section of the propellant charge upon firing of the caseless round.
Claim 2
Dependent Claim
148 words
In a round of telescoped caseless ammunition having in combination a propellant charge having an axial bore throughout its length, a projectile housed entirely within the axial bore of the propellant charge and a primer positioned behind the base of the projectile, the improvement comprising a segmented propellant charge comprising at least a forward-section and an aft-section of propellant, each propellant section comprising molded propellant granules said granules having a burning rate different from that of the molded propellant granules comprising the other propellant sections, said propellant sections united in order of increasing burning rate to form the segmented propellant charge, the section of molded propellant prepared from propellant granules having the slowest burning rate being the aft-section of the propellant charge said segmented propellant charge Incrementally breaking up into propellant granules from the aftsection to the forward-section of the propellant charge upon firing of the caseless round.
Claim 3
Dependent Claim
18 words
The propellant charge of claim 1 comprising three sections of molded propellant granules, an aft-section, central-section, and forward-section.
Claim 4
Dependent Claim
56 words
The propellant charge of claim 2, wherein the aft-section is from about 25 percent to about 60 percent by weight, the central-section is from about 20 percent to about 40 percent by weight, and the forward-section is from about 20 percent to about 40 percent by weight, based on the total weight of the propellant charge.
Claim 5
Dependent Claim
15 words
The propellant charge of claim 2 wherein the molded propellant granules are of single base-type.
Claim 6
Dependent Claim
15 words
The propellant charge of claim 2 wherein the molded propellant granules are of double base-type.
Claim 7
Dependent Claim
16 words
The propellant charge of claim 2 wherein the molded propellant granules are of the triple base-type.
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |