US4132149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid propellant weapon system
Assignee: General Electric Co
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Filing: 1977-10-04
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Granted: 1979-01-02
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Expires: 1997-10-04
Abstract
Abstract A gun and ammunition system utilizing a round of ammunition which contains a supply of liquid propellant and after ignition pumps this propellant into the combustion chamber of the gun.
Inventors
- 👤 Eugene Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:05
CPC Classifications
F; F41; F41A; F41A1/00; F41A1/04; F42; F42B; F42B5/00; F42B5/02; F42B5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A weapon system comprising: a gun; and a round of ammunition; said gun having a firing bore closed by a breech face; said round of ammunition disposed in said firing bore adjacent said breech face; said round of ammunition including: a relatively high mass projectile means having an aft face; and a relatively low mass piston, longitudinally spaced from said projectile, having an aft face of relatively large cross-sectional area spaced from said breech face and a forward face of relatively small cross-sectional area, a passageway therethrough, communicating between said aft and forward faces of said piston, and a pressure sensitive obturating means, obturating said passageway and adapted to open said passageway upon a predetermined pressure being provided on said forward face; and said firing bore has an extension aft of said breech face formed as a converging/diverging nozzle, and said breech face is provided by a burstable diaphragm disposed in said firing bore aft of said round and forward of said nozzle.
Claim 2
Dependent Claim
163 words
A weapon system comprising: a gun; and a round of ammunition; said gun having a firing bore closed by a breech face; said round of ammunition disposed in said firing bore adjacent said breech face; said round of ammunition including: a relatively high mass projectile means having an aft face; and a relatively low mass piston, longitudinally spaced from said projectile, having an aft face of relatively large cross-sectional area spaced from said breech face and a forward face of relatively small cross-sectional area, a passageway therethrough, communicating between said aft and forward faces of said piston, and a pressure sensitive obturating means, obturating said passageway and adapted to open said passageway upon a predetermined pressure being provided on said forward face; and said firing bore has an extension aft of said breech face formed as a converging/diverging nozzle, and said breech face is provided by a burstable diaphragm disposed in said firing bore aft of said round and forward of said nozzle.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |