Short magnum shotshell cartridge and firing assembly
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42B-014/06
F42B-014/00
출원번호
US-0043225
(2005-01-25)
등록번호
US-7451706
(2008-11-18)
발명자
/ 주소
Meyer,Stephen W.
출원인 / 주소
Olin Corporation
대리인 / 주소
Harness, Dickey & Pierce, P.L.C.
인용정보
피인용 횟수 :
6인용 특허 :
10
초록▼
A sabot-retaining shotshell cartridge and firing assembly including a barrel or barrel insert for firing the sabot-retaining shotshell cartridge. The shotshell cartridge includes a cylindrical hull, a sub-caliber projectile, a propellant charge, and a sabot. A central pathway or thin membrane is def
A sabot-retaining shotshell cartridge and firing assembly including a barrel or barrel insert for firing the sabot-retaining shotshell cartridge. The shotshell cartridge includes a cylindrical hull, a sub-caliber projectile, a propellant charge, and a sabot. A central pathway or thin membrane is defined within the base of the sabot between the sub-caliber projectile and propellant charge. The barrel or barrel insert for firing the cartridge includes a transitional area between chamber and sub-caliber rifled bore to retain sabot in the cartridge. Upon cartridge firing, propellant gases flow through central portion of sabot base propelling projectile out of the sabot and into sub-caliber rifled bore.
대표청구항▼
What is claimed is: 1. A shotshell cartridge for use in a sabot-retaining shotshell cartridge chamber comprising: a sub-caliber projectile including a frontal portion at one end, a base at an opposite end, and sidewalls between said frontal portion and said base; a propellant charge; a sabot accomm
What is claimed is: 1. A shotshell cartridge for use in a sabot-retaining shotshell cartridge chamber comprising: a sub-caliber projectile including a frontal portion at one end, a base at an opposite end, and sidewalls between said frontal portion and said base; a propellant charge; a sabot accommodating said projectile, said sabot including a central pathway between said base of said projectile and said propellant charge; a thin membrane over said central pathway; a hull including a front portion and an aft portion, said hull configured to extend along a substantial portion of a length of the shotshell cartridge, said hull accommodating said sabot, said projectile, and said propellant; and a cap attached to said hull adjacent said aft portion of said hull, said cap having a centrally seated primer. 2. A shotshell cartridge according to claim 1, wherein said thin membrane has a thickness that is selected so as to rupture from pressures caused by an ignition of said propellant charge. 3. A shotshell cartridge for use in a sabot-retaining shotshell cartridge chamber comprising: a sub-caliber projectile including a frontal portion at one end, a base at an opposite end, and sidewalls between said frontal portion and said base; a propellant charge; a sabot accommodating said projectile, said sabot including a central pathway between said base of said projectile and said propellant charge: a thin membrane over said central pathway; wherein said sabot includes at least one of a rigid washer and ledge supporting said projectile in front of said thin membrane or central pathway; a hull including a front portion and an aft portion, said hull configured to extend along a substantial portion of a length of the shotshell cartridge, said hull accommodating said sabot, said projectile, and said propellant; and a cap attached to said hull adjacent said aft portion of said hull, said cap having a centrally seated primer. 4. A shotshell cartridge according to claim 3, wherein said sub-caliber projectile is less than 0.54 caliber diameter. 5. A shotshell cartridge according to claim 3, wherein said hull has a diameter of 10 gauge, 12 gauge, 16 gauge, 20 gauge, 28 gauge, or 410 gauge. 6. A shotshell cartridge according to claim 3, wherein said hull is no greater than 2.2 inches long. 7. A shotshell cartridge according to claim 3, wherein said sub-caliber projectile includes an outer layer. 8. A shotshell cartridge according to claim 7, wherein said outer layer is a thin plastic coating. 9. A shotshell cartridge according to claim 3, wherein said sub-caliber projectile includes reduced surface area driving bands. 10. A shotshell cartridge according to claim 3, wherein said sabot houses said projectile within a secondary thin-petal sabot. 11. A shotshell cartridge according to claim 3, wherein said sabot further comprises an annular step, said annular step defining an annular groove between itself and said sidewalls of said projectile. 12. A system for firing a sabot-retaining shotshell cartridge including a sub-caliber projectile, comprising: a sub-caliber projectile including a frontal portion at one end, a base at an opposite end, and sidewalls between said frontal portion and said base; a propellant charge; a sabot accommodating said projectile, said sabot including a central pathway between said base of said sub-caliber projectile and said propellant charge; a thin membrane over the central pathway; a hull including a front portion and an aft portion, said hull configured to extend along a substantial portion of a length of the shotshell cartridge, said hull accommodating said sabot, said projectile, and said propellant; a cap attached to said hull adjacent said aft portion of said hull, said cap having a centrally seated primer; a chamber including a diameter and length sized to accept the cartridge; a rifled bore having a diameter substantially the same as a diameter of said sub-caliber projectile; and a transitional area between said chamber and said bore for retaining said sabot of the cartridge in said hull of the cartridge upon firing. 13. A shotgun barrel according to claim 12, wherein said transitional area includes an annular shoulder extending radially inward and joined with a taper throat, which leads to said rifled bore. 14. A shotgun barrel according to claim 12, wherein said transitional area includes an annular tang extending axially from said rifled bore into said chamber. 15. A system for firing a sabot-retaining shotshell cartridge including a sub-caliber projectile, comprising: a sub-caliber projectile including a frontal portion at one end, a base at an opposite end, and sidewalls between said frontal portion and said base; a propellant charge; a sabot accommodating said projectile, said sabot including a central pathway between said base of said sub-caliber projectile and said propellant charge; a thin membrane over the central pathway; wherein said sabot includes at least one of a rigid washer and ledge supporting said sub-caliber projectile in front of said thin membrane or central pathway; a hull including a front portion and an aft portion, said hull configured to extend along a substantial portion of a length of the shotshell cartridge, said hull accommodating said sabot, said projectile, and said propellant; a cap attached to said hull adjacent said aft portion of said hull, said cap having a centrally seated primer; a chamber including a diameter and length sized to accept the cartridge; a rifled bore having a diameter substantially the same as a diameter of said sub-caliber projectile; and a transitional area between said chamber and said bore for retaining said sabot of the cartridge in said hull of the cartridge upon firing.
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이 특허에 인용된 특허 (10)
Coffield ; Jr. ; George G. ; Beug ; Dennis L., High velocity tapered bore gun and ammunition.
Kopsch Paul J. (710 Cooper Foster Park Rd. Lorain OH 44053) Ward Donald F. (48264 Telegraph Rd. South Amherst OH 44001) Graber Jay (7370 Amity Pike Plain City OH 43064) Nichols Omer (R.D. 8 ; Box 175, Sabot and projectile.
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