US4161133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid propellant gun
Assignee: United States Department of the Navy
•
Filing: 1978-07-03
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Granted: 1979-07-17
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Expires: 1998-07-03
Abstract
Abstract A liquid propellant gun and gun loading process wherein a predetermined ant of a gas is intimately mixed with the propellant charge.
Inventors
- 👤 William L. Black
- 👤 Robert A. Gould
- 👤 Stanley E. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
F; F41; F41A; F41A1/00; F41A1/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
141 words
A bulk loaded liquid propellant gun utilizing a liquid propellant for firing a projectile from a barrel comprising: an elongated barrel; a bolt within said barrel movable between loading and firing positions to load said barrel and to seal the rear thereof; a projectile within said barrel forward of said bolt; a depression on the rear of said projectile to provide a void between said bolt and said projectile; a gas filling said void; an injection port in said barrel communicating to said void while said bolt is in loading position and sealed by said bolt while in firing position; ignition means in said barrel between said bolt and said projectile while said bolt is in firing position to ignite said liquid propellant; and compression means to place said liquid propellant and said gas at a pressure greater than atmospheric pressure.
Claim 2
Dependent Claim
141 words
A bulk loaded liquid propellant gun utilizing a liquid propellant for firing a projectile from a barrel comprising: an elongated barrel; a bolt within said barrel movable between loading and firing positions to load said barrel and to seal the rear thereof; a projectile within said barrel forward of said bolt; a depression on the rear of said projectile to provide a void between said bolt and said projectile; a gas filling said void; an injection port in said barrel communicating to said void while said bolt is in loading position and sealed by said bolt while in firing position; ignition means in said barrel between said bolt and said projectile while said bolt is in firing position to ignite said liquid propellant; and compression means to place said liquid propellant and said gas at a pressure greater than atmospheric pressure.
Claim 3
Dependent Claim
16 words
A bulk loaded liquid propellant gun as described in claim 1 wherein said gas is air.
Claim 4
Dependent Claim
23 words
A bulk loaded liquid propellant gun as described in claim 1 wherein said gas comprises gaseous products of combustion of said liquid propellant.
Claim 5
Dependent Claim
17 words
A bulk loaded liquid propellant gun as described in claim 1 wherein said gas comprises propellant vapors.
Claim 6
Dependent Claim
136 words
A bulk loaded liquid propellant gun utilizing a liquid propellant for firing a projectile from a barrel comprising: an elongated barrel; a bolt within said barrel movable between loading and firing positions to load said barrel and to seal the rear thereof; a projectile within said barrel forward of said bolt; a projection on said bolt to provide a void between said bolt and said projectile; a gas filling said void; an injection port in said barrel communicating to said void while said bolt is in loading position and sealed by said bolt while in firing position; ignition means in said barrel between said bolt and said projectile while said bolt is in firing position to ignite said liquid propellant; and compression means to place said liquid propellant and said gas at greater than atmospheric pressure.
Claim 7
Dependent Claim
136 words
A bulk loaded liquid propellant gun utilizing a liquid propellant for firing a projectile from a barrel comprising: an elongated barrel; a bolt within said barrel movable between loading and firing positions to load said barrel and to seal the rear thereof; a projectile within said barrel forward of said bolt; a projection on said bolt to provide a void between said bolt and said projectile; a gas filling said void; an injection port in said barrel communicating to said void while said bolt is in loading position and sealed by said bolt while in firing position; ignition means in said barrel between said bolt and said projectile while said bolt is in firing position to ignite said liquid propellant; and compression means to place said liquid propellant and said gas at greater than atmospheric pressure.
Claim 8
Dependent Claim
16 words
A bulk loaded liquid propellant gun as described in claim 5 wherein said gas is air.
Claim 9
Dependent Claim
23 words
A bulk loaded liquid propellant gun as described in claim 5 wherein said gas comprises gaseous products of combustion of said liquid propellant.
Claim 10
Dependent Claim
17 words
A bulk loaded liquid propellant gun as described in claim 5 wherein said gas comprises propellant vapors.
Claim 11
Dependent Claim
141 words
A bulk loaded liquid propellant gun utilizing a liquid propellant for firing a projectile from a barrel comprising: an elongated barrel; a bolt within said barrel movable between loading and firing positions to load said barrel and to seal the rear thereof; a projectile within said barrel forward of said bolt; a projection on the rear of said projectile to provide a void between said bolt and said projectile; a gas filling said void; an injection port in said barrel communicating to said void while said bolt is in loading position and sealed by said bolt while in firing position; ignition means in said barrel between said bolt and said projectile while said bolt is in firing position to ignite said liquid propellant and compression means to place said liquid propellant and said gas at a pressure greater than atmospheric pressure.
Claim 12
Dependent Claim
141 words
A bulk loaded liquid propellant gun utilizing a liquid propellant for firing a projectile from a barrel comprising: an elongated barrel; a bolt within said barrel movable between loading and firing positions to load said barrel and to seal the rear thereof; a projectile within said barrel forward of said bolt; a projection on the rear of said projectile to provide a void between said bolt and said projectile; a gas filling said void; an injection port in said barrel communicating to said void while said bolt is in loading position and sealed by said bolt while in firing position; ignition means in said barrel between said bolt and said projectile while said bolt is in firing position to ignite said liquid propellant and compression means to place said liquid propellant and said gas at a pressure greater than atmospheric pressure.
Claim 13
Dependent Claim
16 words
A bulk loaded liquid propellant gun as described in claim 9 wherein said gas is air.
Claim 14
Dependent Claim
23 words
A bulk loaded liquid propellant gun as described in claim 9 wherein said gas comprises gaseous products of combustion of said liquid propellant.
Claim 15
Dependent Claim
17 words
A bulk loaded liquid propellant gun as described in claim 9 wherein said gas comprises propellant vapors.
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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) | 1982-07-16 | 1983-01-15 | 1983-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-16 | 1987-01-15 | 1987-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-16 | 1991-01-15 | 1991-07-17 | $7700.00 | Window Closed / Lapsed |