Liquid propellant gun
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jul 17, 1990
Grant Date -
N/A
app pub date -
Aug 7, 1980
filing date -
Aug 7, 1980
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
A feature of this invention is the provision in an annular piston, annular control valve, liquid propellant gun, of a check valve to permit liquid propellant under relatively low pressure to flow from the supply system into the combustion chamber and to preclude the pulse of pressure generated in the combustion chamber from feeding back to the supply system. This valve allows propellant to be removed automatically from the pumping chamber in the event of a misfire. Another feature of this invention is the provision in an annular piston, annular control valve, liquid propellant gun of a frangible stem which secures the projectile to the cartridge case. The stem breaks to release the projectile for travel down the gun bore when a predetermined level of combustion gas pressure has been developed in the combustion chamber.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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GENERAL DYNAMICS ARMAMENT SYSTEMS INC | 128 LAKESIDE AVENUE BURLINGTON VT 05401 |
International Classification(s)

- 1980 Application Filing Year
- F41F Class
- 60 Applications Filed
- 1 Patents Issued To-Date
- 1.67 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Bulman, Melvin J | Shelburne, VT | 34 | 300 |
# of filed Patents : 34 Total Citations : 300 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 3 Citation Count
- F41F Class
- 0 % this patent is cited more than
- 35 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Jul 19, 2012 | P | Published | |
Dec 14, 2011 | F | Filing | |
Dec 05, 2011 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YEA, KWON-HAE;CHA, HYUNGKI;LEE, SUNG-MAN;AND OTHERS;REEL/FRAME:027386/0059 Owner name: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KOREA, REP Effective Date: Dec 05, 2011 |
Dec 20, 2010 | PD | Priority Date |

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