Projectile with enhanced ballistic efficiency
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IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42B-014/02
F42B-010/44
F42B-012/74
출원번호
US-0996691
(2016-01-15)
등록번호
US-10222188
(2019-03-05)
발명자
/ 주소
Kunz, Joshua M.
Sheer, Francis J.
출원인 / 주소
Kunz, Joshua M.
대리인 / 주소
Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A projectile for use with a firearm having a rifled barrel including helical grooves extending longitudinally along an inner surface thereof includes: a substantially cylindrical projectile body having at a front end an ogival nose section and at a rear end a tail section, a driving band section for
A projectile for use with a firearm having a rifled barrel including helical grooves extending longitudinally along an inner surface thereof includes: a substantially cylindrical projectile body having at a front end an ogival nose section and at a rear end a tail section, a driving band section formed on the projectile body between the nose section and the tail section having a first diameter, a bore rider section formed on the projectile body between the nose section and the tail section having a second diameter different from the first diameter, and a pilot band section formed on the projectile body forward of the driving band section having a third diameter different from the first diameter and the second diameter.
대표청구항▼
1. A projectile for use with a firearm having a rifled barrel including helical grooves extending longitudinally along an inner surface thereof, the projectile comprising: a substantially cylindrical projectile body having at a front end an ogive and at a rear end a tail section;a driving band secti
1. A projectile for use with a firearm having a rifled barrel including helical grooves extending longitudinally along an inner surface thereof, the projectile comprising: a substantially cylindrical projectile body having at a front end an ogive and at a rear end a tail section;a driving band section formed on the projectile body between the ogive and the tail section having a first diameter;a bore rider section formed on the projectile body between the ogive and the tail section having a second diameter different from the first diameter; anda pilot band section formed on the projectile body forward of the driving band section having a third diameter different from the first diameter and the second diameter,wherein the bore rider section is in contact with the pilot band section. 2. The projectile of claim 1, wherein the first diameter is approximately equal to a groove diameter of the barrel. 3. The projectile of claim 1, wherein the second diameter is approximately equal to a bore diameter of the barrel. 4. The projectile of claim 1, wherein the third diameter is between a groove diameter of the barrel and a bore diameter of the barrel. 5. The projectile of claim 1, wherein the first diameter is approximately equal to a groove diameter of the barrel, the second diameter is approximately equal to a bore diameter of the barrel, and the third diameter is between the first diameter and the second diameter. 6. The projectile of claim 1, wherein the bore rider section is disposed between the pilot band section and the driving band section. 7. The projectile of claim 1, wherein the bore rider section is formed to contact an inner surface of a bore of the barrel, and the driving band section is formed to engage the grooves of the barrel. 8. The projectile of claim 1, further comprising: helical recessed regions formed in an outer surface of the projectile body and longitudinally extending along a portion of the projectile body. 9. The projectile of claim 8, wherein the recessed regions longitudinally extend along the driving band section. 10. The projectile of claim 1, further comprising: a tail transition section formed on the projectile body adjacent to the tail section on a forward side thereof and having an angled surface, with respect to a horizontal axis of the projectile body, that forms a transition from the tail section to a portion of the projectile body adjacent to the tail transition section on a forward side thereof. 11. The projectile of claim 1, wherein a tip of the ogive is spherically blunted. 12. The projectile of claim 1, wherein the ogive is formed having an LD-Haack shape. 13. The projectile of claim 1, wherein the projectile body is a monolithically formed body. 14. The projectile of claim 1, wherein the tail section is formed having a boat tail shape. 15. The projectile of claim 1, wherein the projectile body is made of at least one solid material selected from a group consisting of: copper, a copper alloy, aluminum, tungsten, a polymeric material, and a synthetic material. 16. The projectile of claim 15, wherein the copper alloy is C14-700. 17. The projectile of claim 16, wherein the copper alloy has a work hardness of at least half hard. 18. A projectile for use with a firearm having a rifled barrel including helical grooves extending longitudinally along an inner surface thereof, the projectile comprising: a substantially cylindrical projectile body having at a front end an ogive and at a rear end a tail section;a driving band section formed on the projectile body between the ogive and the tail section having a first diameter;a bore rider section formed on the projectile body between the ogive and the tail section having a second diameter different from the first diameter; anda pilot band section formed on the projectile body forward of the driving band section having a third diameter different from the first diameter and the second diameter,wherein the pilot band section is disposed aft of a distal-most end of the ogive. 19. The projectile of claim 18, wherein the pilot band section is geometrically distinct from the ogive.
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이 특허에 인용된 특허 (10)
Lawhorn William S. (Rockwall TX), Advanced air-to-surface weapon.
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