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    Shaped charge and method of making it
    71.
    发明授权
    Shaped charge and method of making it 失效
    成型电荷及其制作方法

    公开(公告)号：US4450768A

    公开(公告)日：1984-05-29

    申请号：US479063

    申请日：1983-03-25

    Applicant: William T. Bell

    Inventor： William T. Bell

    IPC: F42B1/036 ,  F42B3/08

    CPC classification number: F42B1/036

    Abstract: The detonating bore in the rear wall of a shaped charge case is outwardly convex. A powdered explosive is compacted into the case through the open front opposite the detonating bore, causing the portion which enters the convex end of the bore from within the case to be less compacted and less dense, for increased sensitivity and more reliable detonation.

    Abstract translation: 成形电荷箱的后壁中的引爆孔向外凸出。 粉状爆炸物通过与引爆孔相对的开放前部压缩到壳体中，使得从壳体内进入孔的凸出端的部分不被压实并且不致密，以增加灵敏度和更可靠的爆炸。

    Annular shaped-charge housing for blasting and method of using the same
    76.
    发明授权
    Annular shaped-charge housing for blasting and method of using the same 有权

    公开(公告)号：US11774220B2

    公开(公告)日：2023-10-03

    申请号：US17890490

    申请日：2022-08-18

    Applicant: Shandong University of Technology

    Inventor： Fujiao Chu ,  Wentao Lan ,  Gongcheng Li ,  Zimin Ma ,  Zhihe Liu

    IPC: F42B1/02 ,  F42B1/028 ,  F42B1/00 ,  F42D1/00 ,  F42B3/00 ,  F42B3/08 ,  F42B1/036

    CPC classification number: F42B1/02 ,  F42B1/028 ,  F42B1/036 ,  F42B3/00 ,  F42B3/08 ,  F42D1/00

    Abstract: An annular shaped-charge and blasting housing and a use method thereof are provided. The annular shaped-charge and blasting housing includes a PVC segment and multiple notch grooves. Grooves are notched on a W-shaped PVC segment formed by machining. The notching angle of the groove and the spacing distance between the grooves can be adjusted according to use requirements. And, the W-shaped PVC segment after being cut may not be limited to have eight notch grooves, and the number of the notch grooves of a single one PVC segment can be adjusted according to actual working conditions. The PVC segment can be folded and closed to form the annular shaped-charge and blasting housing. Therefore, the housing of the embodiments is simple in production, the linear segment can be bended and folded by utilizing the plasticity of the PVC material. The manufacturing process of the housing is simple and feasible. The housing of the embodiments is convenient to use and can meet the requirements of the annular shaped-charge cutting in blasting engineering. Meanwhile, the housing of the embodiments are widely applied. Further, the housing is not only applicable to annular shaped-charge cutting for the bottoms of holes to improve the planeness of the tunnel faces or the berm for the bench blasting, but also applicable to the cut blasting to improve the cut effect.

    Shaped Charge Liner with Nanoparticles
    77.
    发明申请
    Shaped Charge Liner with Nanoparticles 有权

    公开(公告)号：US20210207932A1

    公开(公告)日：2021-07-08

    申请号：US17031437

    申请日：2020-09-24

    Applicant: Halliburton Energy Services, Inc.

    Inventor： James Marshall Barker ,  Corbin Sean Glenn

    IPC: F42B1/032 ,  B22F3/02 ,  C22C27/04 ,  B22F1/00 ,  C22C1/04 ,  E21B43/117 ,  F42B1/036

    Abstract: A liner (18) for a shaped-charge (10) that is compressively formed from a mixture of powdered metal, powdered metal binder, and a selected quantity of nanoparticle material, is used to achieve improved penetration depths during perforation of a wellbore. Exemplary nanoparticles include lead, tin, copper, molybdenum, etc. Such nanoparticles increase the density, sound speed, or acoustic impedance of the liner. In another embodiment, the added nanoparticles comprise reactive materials which, after penetration into the formation, cause secondary reactions in the perforations.

    Shaped charge
    78.
    发明授权
    Shaped charge 有权

    公开(公告)号：US10782106B2

    公开(公告)日：2020-09-22

    申请号：US16627512

    申请日：2018-06-25

    Applicant: NEXTER MUNITIONS

    Inventor： Rémi Boulanger ,  Bertrand Padiolleau

    IPC: F42B1/028 ,  F42B1/036

    Abstract: A shaped charge including an explosive load positioned in a casing, a liner applied on the load, and means ensuring the securing of the casing and the load bearing the liner. These securing means include a ring having a stop surface for the liner and at least two shims each covering an angular sector and moving radially by the action of a tightening means, to be pressed against an inner bearing surface of the casing. According to the invention, the tapped hole of the tightening screw(s) has its axis parallel to the axis of the casing and the shim is positioned axially relative to the ring by at least one radial pin authorizing sliding thereof.

    Modular shaped charge system (MCS) conical device
    80.
    发明授权
    Modular shaped charge system (MCS) conical device 有权

    公开(公告)号：US10222182B1

    公开(公告)日：2019-03-05

    申请号：US15731876

    申请日：2017-08-18

    Applicant: Department of the Navy

    Inventor： Normary Camacho Cardoza ,  Nicholas Shaker ,  Michael G. Craft ,  Lonnie Frericks

    IPC: F42B1/036 ,  F42B1/032 ,  F42B1/028

    Abstract: A modular shaped charge system including a housing including a circular opening; an attachment ring having a diameter complementary to a diameter of the opening of the housing. The attachment ring configured to snap fit into the opening of the housing. A liner including a cone shape with a base diameter complementary to the diameter of the attachment ring. The liner is configured to snap fit into the attachment ring. The apex of the liner is positioned inside the housing. An air gap cover including a cone shape with a base diameter complementary to the diameter of the attachment ring. The air gap cover is configured to thread into the attachment ring, and the apex of the air gap cover is positioned outside the housing.

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