Patent US4572078A successfully refreshed from Google Patents.
US4572078A
Expired / Lapsed
US
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Cased cartridge ammunition ignition booster
Assignee: ATK Launch Systems LLC
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Filing: 1984-05-10
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Granted: 1986-02-25
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Expires: 2004-05-10
Abstract
Abstract A cased cartridge ammunition ignition booster includes a film of booster propellant that is case-bonded without insulation or liner to the inside wall and base of an ordinary brass, steel or plastic cartridge case and ignited by a conventional primer. Flame spread occurs from the case wall inward through the non case-bonded propellant bed, that is, the bed of the propelling charge.
Inventors
- 👤 Frank H. Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:12
CPC Classifications
F; F42; F42C; F42C19/00; F42C19/08; F42C19/0823; F42C19/0826; F42B; F42B5/00; F42B5/02; F42B5/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
123 words
The combination of a cased cartridge and an ammunition ignition booster comprising, a cartridge case for cased cartridge ammunition, said cartridge case having inside walls and an open end, and an ignition booster for the cased cartridge ammunition comprising a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls of said cartridge case by pouring into said open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls.
Claim 2
Dependent Claim
123 words
The combination of a cased cartridge and an ammunition ignition booster comprising, a cartridge case for cased cartridge ammunition, said cartridge case having inside walls and an open end, and an ignition booster for the cased cartridge ammunition comprising a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls of said cartridge case by pouring into said open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls.
Claim 3
Dependent Claim
35 words
A combination as specified in claim 1 wherein said cartridge case also includes an inside base and where a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen is also applied to said base.
Claim 4
Dependent Claim
25 words
A combination as specified in claim 1 further including means associated with said inside walls of said cartridge case for firing said film of nitrocellulose.
Claim 5
Dependent Claim
134 words
A blank-fire round of ammunition comprising, a cartridge case having an open end, a closed end and inside walls including a base, a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls and said base of said cartridge case by pouring into the open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls, a propellant charge contained in said cartridge case, and means associated with the closed end of said cartridge case for firing said film of nitrocellulose.
Claim 6
Dependent Claim
134 words
A blank-fire round of ammunition comprising, a cartridge case having an open end, a closed end and inside walls including a base, a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls and said base of said cartridge case by pouring into the open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls, a propellant charge contained in said cartridge case, and means associated with the closed end of said cartridge case for firing said film of nitrocellulose.
Claim 7
Dependent Claim
143 words
A round of ammunition comprising, a cartridge case having an open end, a closed end and inside walls including a base, a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls and said base of said cartridge case by pouring into said open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls, a propellant charge contained in said cartridge case, a projectile received within the open end of said case, and means associated with the closed end of said cartridge case for firing said film of nitrocellulose.
Claim 8
Dependent Claim
143 words
A round of ammunition comprising, a cartridge case having an open end, a closed end and inside walls including a base, a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls and said base of said cartridge case by pouring into said open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls, a propellant charge contained in said cartridge case, a projectile received within the open end of said case, and means associated with the closed end of said cartridge case for firing said film of nitrocellulose.
Claim 9
Dependent Claim
23 words
A round of ammunition as specified in claim 5 wherein said film of booster propellant has embedded therein, grains of a crystalline oxidizer.
Claim 10
Dependent Claim
41 words
A round of ammunition as specified in claim 5 wherein said projectile has a base, said projectile being received within the open end of said cartridge case and also having a film of nitrocellulose containing 7 to 13.6% Nitrogen applied thereto.
Claim 11
Dependent Claim
43 words
A round of ammunition as specified in claim 5 further including a booster propellant ignition flash tube having vent holes therein, said flash tube being located on the central axis of said cartridge case and extending from the base thereof toward said projectile.
Claim 12
Dependent Claim
42 words
A round of ammunition as specified in claim 8 wherein said projectile has a base, said projectile base being received within the open end of said cartridge case and also having a film of nitrocellulose containing 7 to 13.6% Nitrogen applied thereto.
Claim 13
Dependent Claim
22 words
A round of ammunition as specified in claim 9 wherein said film of nitrocellulose has embedded therein grains of a crystalline oxidizer.
Claim 14
Dependent Claim
118 words
A cased cartridge ammunition ignition booster for a round of ammunition comprising, a cartridge case for cased cartridge ammunition, said cartridge case having an open end, inside walls and being made of brass, and a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls of said cartridge case by pouring into said open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls.
Claim 15
Dependent Claim
118 words
A cased cartridge ammunition ignition booster for a round of ammunition comprising, a cartridge case for cased cartridge ammunition, said cartridge case having an open end, inside walls and being made of brass, and a film of solvent soluble nitrocellulose containing 7 to 13.6% Nitrogen applied to said inside walls of said cartridge case by pouring into said open end of said cartridge case a solvent type double-base propellant that is not cured, with the propellant containing 20-40% nitroglycerine and with acetone used as a solvent, turning the cartridge case upside down to allow the propellant to drain, and when drained, heating the cartridge case to dry the film of propellant that has adhered to said inside walls.
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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) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |