Corrosion-inhibited projectiles, and shot shells including the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42B-007/04
F42B-007/10
F42B-012/74
F42B-012/80
출원번호
US-0943625
(2013-07-16)
등록번호
US-9115961
(2015-08-25)
발명자
/ 주소
Amick, Darryl D.
출원인 / 주소
Amick Family Revocable Living Trust
대리인 / 주소
Dascenzo Intellectual Property Law, P.C.
인용정보
피인용 횟수 :
2인용 특허 :
16
초록▼
Corrosion-inhibited copper-containing projectiles and shot shells including the same. The projectiles include a core that is formed from a core material, and an outer coating that is formed from a coating material. The core material includes copper, and optionally may include at least 50 wt % copper
Corrosion-inhibited copper-containing projectiles and shot shells including the same. The projectiles include a core that is formed from a core material, and an outer coating that is formed from a coating material. The core material includes copper, and optionally may include at least 50 wt % copper. In some embodiments, the outer coating maintains a corrosion rate of copper within the core material below 0.00075 mmpy. The shot shells include a shot charge that includes a plurality of the projectiles.
대표청구항▼
1. A shot shell, comprising: a cylindrical casing that defines a head portion, a mouth region, and an enclosed volume;a primer that is operatively attached to the head portion and defines a portion of the enclosed volume;a propellant charge that is located within the enclosed volume proximal to the
1. A shot shell, comprising: a cylindrical casing that defines a head portion, a mouth region, and an enclosed volume;a primer that is operatively attached to the head portion and defines a portion of the enclosed volume;a propellant charge that is located within the enclosed volume proximal to the primer, wherein the propellant charge is in thermal communication with the primer, and further wherein the primer is configured to selectively ignite the propellant charge;a shot charge that is located within the enclosed volume proximal to the mouth region, wherein the shot charge includes a plurality of projectiles that each includes:a core that is formed from a core material, wherein the core material includes at least 50 wt % copper;(ii) a corrosion-resistant outer coating that is formed from a coating material that is different from the core material; and(iii) an adhesion layer that increases an adhesion between the core and the outer coating, wherein the adhesion layer forms a ligand with the core material; anda wad that is located within the enclosed volume and separates the shot charge from the propellant charge. 2. The shot shell of claim 1, wherein the shot shell is configured to be placed within a firearm, wherein a firing pin of the firearm is configured to strike the primer to selectively ignite the propellant charge and propel the shot charge from a barrel of the firearm, wherein the shot charge is configured to strike a target, and further wherein at least one of a thickness of the outer coating and a composition of the coating material is selected such that the outer coating remains at least substantially intact subsequent to the projectile of the shot charge striking the target. 3. The shot shell of claim 2, wherein the target includes a body of water, and further wherein, when the plurality of projectiles is immersed within the body of water, a corrosion rate of copper within the core material is below a threshold copper corrosion rate of 0.00075 mmpy. 4. The shot shell of claim 1, wherein a diameter of each of the plurality of projectiles is at least 1 mm and less than 10 mm. 5. The shot shell of claim 1, wherein each of the plurality of projectiles is a shot pellet that is sized to be placed within the enclosed volume of the shot shell. 6. The shot shell of claim 1, wherein a corrosion rate, in water, of copper within the core material is below a threshold copper corrosion rate of 0.00075 mmpy when the plurality of projectiles are placed in the water. 7. The shot shell of claim 6, wherein the corrosion rate of the copper is determined when each of the plurality of projectiles is immersed in an aqueous solution that includes a chemical composition that is comparable to a chemical composition of a body of water into which the plurality of projectiles are immersed subsequent to being fired from a firearm. 8. The shot shell of claim 1, wherein the core of each of the plurality of projectiles is a composite core that includes an inner region and an outer region that encapsulates the inner region, and further wherein the copper comprises the outer region of the core. 9. The shot shell of claim 8, wherein the inner region of each of the plurality of projectiles includes at least one of a copper alloy, brass, bronze, zinc, tin, phosphorus, aluminum, manganese, and silicon. 10. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles defines an outer shell that defines an internal volume that contains the core. 11. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles includes an isolation layer that fluidly and chemically isolates the core material from an ambient environment that surrounds the projectile. 12. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles includes a passivation layer that decreases a chemical reactivity of the core material. 13. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles includes a corrosion-inhibiting layer that decreases a potential for corrosion of the core material. 14. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles includes a hydrophobic film. 15. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles includes a plurality of layers. 16. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles includes at least one of a copper oxide, a copper sulfide, a copper sulfate, a copper carbonate, and a copper chloride. 17. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles includes at least one of a paint, a varnish, a lacquer, an oil, and a wax. 18. The shot shell of claim 1, wherein the coating material of each of the plurality of projectiles includes at least one of an azole, a thiazole, a benzothiazole, a triazole, a benzotriazole, a tolytriazole, a methylbenzotriazole, a carboxybenzotriazole, an ethylenediaminetetraacetic acid, a dimercaprol, a porphyrin, and potassium sorbate. 19. The shot shell of claim 1, wherein the outer coating of each of the plurality of projectiles defines a coating thickness of less than 0.05 mm. 20. The shot shell of claim 1, wherein the shot charge is the plurality of projectiles. 21. The shot shell of claim 1, wherein the adhesion layer is formed on an outer surface of the core. 22. The shot shell of claim 1, wherein the adhesion layer is formed from an outer surface of the core. 23. The shot shell of claim 1, wherein the outer coating includes a plurality of layers, and wherein the adhesion layer forms at least one of the plurality of layers. 24. A shot shell, comprising: a cylindrical casing that defines a head portion, a mouth region, and an enclosed volume;a primer that is operatively attached to the head portion and defines a portion of the enclosed volume;a propellant charge that is located within the enclosed volume proximal to the primer, wherein the propellant charge is in thermal communication with the primer, and further wherein the primer is configured to selectively ignite the propellant charge;a shot charge that is located within the enclosed volume proximal to the mouth region, wherein the shot charge includes a plurality of projectiles that each includes:(i) a core that is formed from a core material, wherein the core material includes at least 50 wt % copper; and(ii) a corrosion-resistant outer coating that is formed from a coating material that is different from the core material, wherein the outer coating includes an adhesion layer that increases adhesion between the core and the outer coating, and further wherein the adhesion layer forms a ligand with the core material; anda wad that is located within the enclosed volume and separates the shot charge from the propellant charge. 25. The shot shell of claim 24, wherein the shot shell is configured to be placed within a firearm, wherein a firing pill of the firearm is configured to strike the primer to selectively ignite the propellant charge and propel the shot charge from a barrel of the firearm, wherein the shot charge is configured to strike a target, and further wherein at least one of a thickness of the outer coating and a composition of the coating material is selected such that the outer coating remains at least substantially intact subsequent to the projectile of the shot charge striking the target. 26. The shot shell of claim 25, wherein the target includes a body of water, and further wherein, when the plurality of projectiles is immersed within the body of water, a corrosion rate of copper within the core material is below a threshold copper corrosion rate of 0.00075 mmpy. 27. The shot shell of claim 24, wherein a corrosion rate, in water, of copper within the core material is below a threshold copper corrosion rate of 0.00075 mmpy when the plurality of projectiles are placed in the water. 28. The shot shell of claim 24, wherein the adhesion layer is formed on an outer surface of the core. 29. The shot shell of claim 24, wherein the adhesion layer is formed from an outer surface of the core. 30. The shot shell of claim 24, wherein the outer coating includes a plurality of layers, and wherein the adhesion layer forms at least one of the plurality of layers.
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