US3688697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid grain caseless ammunition propellant
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1969-07-31
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Granted: 1972-09-05
•
Expires: 1989-07-31
Abstract
Abstract The specification discloses caseless ammunition and solid propellant grains therefor in which there are provided a plurality of separate perforations extending rearwardly from the front end of the grain and substantially parallel to its longitudinal axis, and terminating short of the rear end of the grain. Ignition of the grain causes burning to develop through the perforations such that the projectile is propelled forwardly through the gun barrel leaving the grain in the chamber.
Inventors
- 👤 Ben E Paul
- 👤 Ival L Olmstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:31
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/02; F42B5/18; Y; Y10; Y10S; Y10S102/00; Y10S102/70
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
24 words
A grain according to claim 1 in which the outer circumferential surface of the grain has a coating of a material which inhibits burning.
Claim 2
Dependent Claim
24 words
A grain according to claim 1 in which the grain is a casting from a slurry comprising a double base of nitrocellulose and nitroglycerin.
Claim 3
Dependent Claim
26 words
A grain according to claim 1 in which the grain has an outer circumferential surface which is cylindrical and the perforations have cross-sections which are circular.
Claim 4
Dependent Claim
28 words
A grain according to claim 1 in which a projectile is attached to the grain with at least part of the projectile extending in front of the grain.
Claim 5
Dependent Claim
19 words
A grain according to claim 1 in which a projectile is telescoped within the front part of the grain.
References Cited (Backward Citations)
US430229A
Cited
US540327A
Cited
US694295A
Cited
US695809A
Cited
GB488819A
Cited
US2632391A
Cited
US3345945A
Cited
US3482516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |