US3736875A - Explosive charge with annular ignition gap - Google Patents
Explosive charge with annular ignition gap Download PDFInfo
- Publication number
- US3736875A US3736875A US00074801A US3736875DA US3736875A US 3736875 A US3736875 A US 3736875A US 00074801 A US00074801 A US 00074801A US 3736875D A US3736875D A US 3736875DA US 3736875 A US3736875 A US 3736875A
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- Prior art keywords
- propagation
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- ignition gap
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- 239000002360 explosive Substances 0.000 title claims abstract description 59
- 238000005474 detonation Methods 0.000 claims description 18
- 230000000977 initiatory effect Effects 0.000 claims description 11
- 238000005422 blasting Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 claims description 3
- AGUIVNYEYSCPNI-UHFFFAOYSA-N N-methyl-N-picrylnitramine Chemical group [O-][N+](=O)N(C)C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O AGUIVNYEYSCPNI-UHFFFAOYSA-N 0.000 claims description 3
- TZRXHJWUDPFEEY-UHFFFAOYSA-N Pentaerythritol Tetranitrate Chemical compound [O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O TZRXHJWUDPFEEY-UHFFFAOYSA-N 0.000 claims description 3
- 230000001788 irregular Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
- F42B1/024—Shaped or hollow charges provided with embedded bodies of inert material
Definitions
- the present invention relates in general to explosive charges, and particularly to a symmetrical explosive charge having an annular ignition gap.
- Annular initiating devices are employed in the case of rotationally symmetrical explosive charges, and are used preferably in hollow explosive charges. These are blasting charges of a predominantly cylindrical shape exhibiting a recess on the side thereof facing the object to be blasted, which recess is normally lined with a layer of metal or other material. The ignition of such hollow explosive charges must be initiated from the end opposite the recess.
- the igniting element can be disposed centrally on the axis of the explosive charge or can also be arranged annularly at the outer rim thereof. The latter design makes it possible to control the detonation waves so that they extend annularly from the outside toward the inside in the direction toward the recess, which is most advantageous.
- inert bodies ofa disk-like or conical shape are normally provided between the central primer and the hollow explosive charge, the detonation being triggered by the primer extending around the inert body.
- An irregular path of the detonation can be caused by the eccentric position of the central primer, and, in case of annular priming, by an eccentric arrangement of the inert component with respect to the axis of the hollow explosive charge.
- the blasting charge disposed behind the inert component and employed for the transmission of the detonation is relatively thick.
- the thickness of this conical or cylindrical propagation charge is normally l-l5 mm. and more, and additionally, widens toward the hollow explosive charge, because the inert component is rounded toward the bottom surface.
- the annular aperture between the propagation charge and the hollow explosive charge is relatively wide, being generally 2 cm. and more.
- This entails numerous disadvantages. Due to the propagation charge of excessive width behind the inert component, the ignition of the detonation can occur, on one side, to a larger extent toward the inner diameter, and, on the other side, more at the outer rim, and a varying initiation of the hollow explosive charge is the consequence. Besides, due to the very thick propagation charge, a strong pressure is also exerted on the inert element, which pressure can prematurely destroy this inert element, or alter the position thereof. Consequently, the progression of the detonation becomes even more irregular.
- this invention relates to an explosive charge with an annular ignition gap formed by the initiating element or primer having a width of only 1-5 mm.
- a hollow blasting charge with means to effect annular initiation thereof is shown in accordance with the invention.
- the explosive charge 1 is provided in a cartridge or container which includes a cavity 2 having a lining 3 joining with the container jacket 7.
- the ignition takes place from the primer 4 formed in a thickened end ofjacket 7 with the blasting cap 5 by way of a predominantly conical propagation charge 6, which latter is disposed between the jacket 7 and the conical inert component 8.
- This propagation charge has a substantially uniform thickness b, and the annular ignition gap 9 exhibits a width a.
- the limits of the dimensions a and b depend .on the high-brisance explosives preferably employed as the explosive 1 in this arrangement.
- the lower limit for the width a of the annular ignition gap i.e., the gap between the propagation charge 6 and the hollow explosive charge 1, is determined by the point at which a safe, complete detonation is still ensured.
- the annular ignition gap is a little wider, e.g., about 0.5 1 mm., than the minimum with required for a safe, complete detonation.
- the optimum thickness of the propagation charge 6, which is preferably conical, is, for example, in case of penthrite, 3 mm., and in case of cyclonite and tetryl, 4-5 mm.
- the thickness of the various explosives, especially high-brisance explosives, required to attain a safe, complete detonation has been determined by experimenting with bands of various thicknesses, for example, having a width of 3-5 cm. Normally, these values are 2-5 mm. In case of larger wall thicknesses, the initiation is highly scattered and the effect is diminished.
- the thickness or width of the annular ignition gap is equal to the thickness or breadth b of the explosive propagation charge.
- the latter can also be thicker and can be, for example, 4 mm., in case the annular ignition gap has a width a of only 2 mm.
- the propagation charge can consist of pressed or cast ex- While I have shown and described one embodiment in accordance with the present invention.
- An explosive device comprising a generally cylindrical explosive charge in a container having one end closed, an inert conical member having its major base in contact with the open end of said explosive charge and being slightly smaller in diameter than said explosive charge so as to leave exposed an annular surface of uniform width forming with said conical member and said container an annular ignition gap, said container being spaced uniformly from the conical surface of said conical member to form an annular initiation space, and propagation charge means disposed in said annular initiation space and filling said ignition gap for ensuring symmetrical propagation of the detonation waves around the major base of the inert conical member, said annular ignition gap having a predetermined width and said propagation charge means having a predetermined thickness, at least one of the predetermined width of said ignition gap and the predetermined thickness of said propagation charge means exceeding the respective minimum width and minimum thickness absolutely necessary to effect sure and safe propagation of the detonation by 0.5 to 1 mm.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
An explosive charge separated from an annular propagation charge by a conical inert element so as to form an annular ignition gap between the propagation charge and the explosive charge, the annular ignition gap having a width of only 1-5 mm.
Description
U Umted States Patent 1 91 1111 3,736,875 Bucklishch 1 1 June 5, 1973 [54] EXPLOSIVE CHARGE WITH ANNULAR 3,100,445 8/1963 Poulter ..102/24 HC IGNITION GAP 3,103,882 9/1963 Gilliland ....102/24 HC 3,443,518 5/1969 Cross 1 ..102/24 HC [75] Inventor: Ludwig Bucklishch, A-4866 Un- 3,451,339 6/1969 Precoul ..102/24 HC terach, Austria [73] Assignee: Dynamite Nobel Aktiengesellschaft, FOREIGN PATENTS OR APPLICATIONS Troisdorf, Germany 1,571,283 5/1969 Germany ..102 24 HC [22] Filed: Sept. 23, 1970 21 APPL 74,301 Primary ExaminerVerlin R. Pendegrass Attorney-Craig and Antonelli [30] Foreign Application Priority Data Sept. 23, 1969 Germany ..P 19 48 058.1 [57] ABSTRACT An explosive charge separated from an annular 52 us. (:1. ..102 24 uc, 102/56 Propagation charge y a conical inert element 80 as to [51] Int I I N F42) 13/08 form an annular ignition gap between the propagation [58] Field of HC 56 charge and the explosive charge, the annular ignition g p having a width of y 1-5 mm [56] References Cited 9 Claims, 1 Drawing Figure UNITED STATES PATENTS 2,892,407 6/1959 MacLeod ..102/24 HC PATENTEDJUH 5 I973 3,736,875
llll' .IIW
INVENTOR LUDWIG BUCKLISCH mwgmxmmsmm- A axgsp EXPLOSIVE CHARGE WITH ANNULAR IGNITION GAP The present invention relates in general to explosive charges, and particularly to a symmetrical explosive charge having an annular ignition gap.
Annular initiating devices are employed in the case of rotationally symmetrical explosive charges, and are used preferably in hollow explosive charges. These are blasting charges of a predominantly cylindrical shape exhibiting a recess on the side thereof facing the object to be blasted, which recess is normally lined with a layer of metal or other material. The ignition of such hollow explosive charges must be initiated from the end opposite the recess. The igniting element can be disposed centrally on the axis of the explosive charge or can also be arranged annularly at the outer rim thereof. The latter design makes it possible to control the detonation waves so that they extend annularly from the outside toward the inside in the direction toward the recess, which is most advantageous. In order to accomplish this objective, inert bodies ofa disk-like or conical shape are normally provided between the central primer and the hollow explosive charge, the detonation being triggered by the primer extending around the inert body. This construction makes it possible to obtain advantages for special purposes with respect to the effect of the spatial dimensions of the explosive charge.
It is well known that any irregularity in the path of the detonating process considerably reduces the efficiency of such hollow explosive charge. An irregular path of the detonation can be caused by the eccentric position of the central primer, and, in case of annular priming, by an eccentric arrangement of the inert component with respect to the axis of the hollow explosive charge. In the conventional hollow explosive charge, the blasting charge disposed behind the inert component and employed for the transmission of the detonation is relatively thick. The thickness of this conical or cylindrical propagation charge is normally l-l5 mm. and more, and additionally, widens toward the hollow explosive charge, because the inert component is rounded toward the bottom surface. Consequently, the annular aperture between the propagation charge and the hollow explosive charge is relatively wide, being generally 2 cm. and more. This entails numerous disadvantages. Due to the propagation charge of excessive width behind the inert component, the ignition of the detonation can occur, on one side, to a larger extent toward the inner diameter, and, on the other side, more at the outer rim, and a varying initiation of the hollow explosive charge is the consequence. Besides, due to the very thick propagation charge, a strong pressure is also exerted on the inert element, which pressure can prematurely destroy this inert element, or alter the position thereof. Consequently, the progression of the detonation becomes even more irregular.
Detailed investigations have shown that, in case of annular ignition of axially symmetrical explosive charges, the explosive propagating charge disposed behind the inert component is to be as small as possible, and the annular point of ignition must be as narrow as possible in order to obtain a maximum effect. Accordingly, this invention relates to an explosive charge with an annular ignition gap formed by the initiating element or primer having a width of only 1-5 mm.
It is therefore an object of the present invention to provide an explosive charge having an annular ignition charge which eliminates or otherwise avoids the disadvantages inherent in known arrangements of a similar type.
It is another object of the present invention to provide an explosive charge having an annular ignition charge which insures a symmetrical propagation of the detonation waves.
It is a further object of the present invention to provide an explosive charge having an annular ignition charge which is within a prescribed range of thickness and provides an annular ignition gap of proper width to insure an optimum efficiency in ignition of the charge.
These and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken with the accompanying drawing which provides a longitudinal sectional view of an explosive charge in accordance with the invention.
In the drawing, a hollow blasting charge with means to effect annular initiation thereof is shown in accordance with the invention. The explosive charge 1 is provided in a cartridge or container which includes a cavity 2 having a lining 3 joining with the container jacket 7. The ignition takes place from the primer 4 formed in a thickened end ofjacket 7 with the blasting cap 5 by way of a predominantly conical propagation charge 6, which latter is disposed between the jacket 7 and the conical inert component 8. This propagation charge has a substantially uniform thickness b, and the annular ignition gap 9 exhibits a width a.
In detail, the limits of the dimensions a and b depend .on the high-brisance explosives preferably employed as the explosive 1 in this arrangement. The lower limit for the width a of the annular ignition gap, i.e., the gap between the propagation charge 6 and the hollow explosive charge 1, is determined by the point at which a safe, complete detonation is still ensured. Suitably, the annular ignition gap is a little wider, e.g., about 0.5 1 mm., than the minimum with required for a safe, complete detonation.
Corresponding considerations also apply in connection with the thickness b of the propagating blasting charge 6 itself, which latter likewise is to be only a little thicker than necessary for a sure transmission of the detonation. The optimum thickness of the propagation charge 6, which is preferably conical, is, for example, in case of penthrite, 3 mm., and in case of cyclonite and tetryl, 4-5 mm. The thickness of the various explosives, especially high-brisance explosives, required to attain a safe, complete detonation has been determined by experimenting with bands of various thicknesses, for example, having a width of 3-5 cm. Normally, these values are 2-5 mm. In case of larger wall thicknesses, the initiation is highly scattered and the effect is diminished.
In case of too small a thickness b, a safe propagation of the detonation is no longer ensured, and there is no initiation at all, or only an irregular initiation. Preferably, the thickness or width of the annular ignition gap is equal to the thickness or breadth b of the explosive propagation charge. However, the latter can also be thicker and can be, for example, 4 mm., in case the annular ignition gap has a width a of only 2 mm. The propagation charge can consist of pressed or cast ex- While I have shown and described one embodiment in accordance with the present invention. it is understood that the same is not limited thereto but is susceptible of numerous changes and modifications as known to a person skilled in the art, and I therefore do not wish to be limited to the details shown and described herein but intend to cover all such changes and modifications as are obvious to one of ordinary skill in the art.
I claim:
1. An explosive device comprising a generally cylindrical explosive charge in a container having one end closed, an inert conical member having its major base in contact with the open end of said explosive charge and being slightly smaller in diameter than said explosive charge so as to leave exposed an annular surface of uniform width forming with said conical member and said container an annular ignition gap, said container being spaced uniformly from the conical surface of said conical member to form an annular initiation space, and propagation charge means disposed in said annular initiation space and filling said ignition gap for ensuring symmetrical propagation of the detonation waves around the major base of the inert conical member, said annular ignition gap having a predetermined width and said propagation charge means having a predetermined thickness, at least one of the predetermined width of said ignition gap and the predetermined thickness of said propagation charge means exceeding the respective minimum width and minimum thickness absolutely necessary to effect sure and safe propagation of the detonation by 0.5 to 1 mm.
2. An explosive device as defined in claim 1, wherein the thickness of said propagation charge means is substantially equal to the width of said ignition gap.
3. An explosive device as defined in claim 2, wherein a blasting cap is supported on the minor base of said conical member in contact with said propagation charge means and a primer charge is supported by container in contact with said blasting cap.
4. An explosive device as defined in claim 3, wherein said closed end of said container includes a conical hollow.
5. An explosive device as defined in claim 2, wherein said propagation charge means is penthrite and its thickness is 3 mm.
6. An explosive device as defined in claim 2, wherein said propagation charge means is cyclonite and tetryl and its thickness is 4 to 5 mm.
7. An explosive device as defined in claim 1, wherein said propagation charge means has a thickness of 4 mm. and said ignition gap has a width of 2 mm.
8. An explosive device as defined in claim 1, wherein the width of said ignition gap is 1 to 5 mm.
9. An explosive device as defined in claim 1, wherein the width of said ignition gap and the thickness of the propagation charge means exceed the respective minimum width and minimum thickness for safe propagation of the detonation by 0.5 to 1 mm.
Claims (9)
1. An explosive device comprising a generally cylindrical explosive charge in a container having one end closed, an inert conical member having its major base in contact with the open end of said explosive charge and being slightly smaller in diameter than said explosive charge so as to leave exposed an annular surface of uniform width forming with said conical member and said container an annular ignition gap, said container being spaced uniformly from the conical surface of said conical member to form an annular initiation space, and propagation charge means disposed in said annular initiation space and filling said ignition gap for ensuring symmetrical propagation of the detonation waves around the major base of the inert conical member, said annular ignition gap having a predetermined width and said propagation charge means having a predetermined thickness, at least one of the predetermined width of said ignition gap and the predetermined thickness of said propagation charge means exceeding the respective minimum width and minimum thickness absolutely necessary to effect sure and safe propagation of the detonation by 0.5 to 1 mm.
2. An explosive device as defined in claim 1, wherein the thickness of said propagation charge means is substantially equal to the width of said ignition gap.
3. An explosive device as defined in claim 2, wherein a blasting cap is supported on the minor base of said conical member in contact with said propagation charge means and a primer charge is supported by container in contact with said blasting cap.
4. An explosive device as defined in claim 3, wherein said closed end of said container includes a conical hollow.
5. An explosive device as defined in claim 2, wherein said propagation charge means is penthrite and its thickness is 3 mm.
6. An explosive device as defined in claim 2, wherein said propagation charge means is cyclonite and tetryl and its thickness is 4 to 5 mm.
7. An explosive device as defined in claim 1, wherein said propagation charge means has a thickness of 4 mm. and said ignition gap has a width of 2 mm.
8. An explosive device as defined in claim 1, wherein the width of said ignition gap is 1 to 5 mm.
9. An explosive device as defined in claim 1, wherein the width of said ignition gap and the thickness of the propagation charge means exceed the respective minimum width and minimum thickness for safe propagation of the detonation by 0.5 to 1 mm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691948058 DE1948058A1 (en) | 1969-09-23 | 1969-09-23 | Explosive charge with ring-shaped ignition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3736875A true US3736875A (en) | 1973-06-05 |
Family
ID=5746261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00074801A Expired - Lifetime US3736875A (en) | 1969-09-23 | 1970-09-23 | Explosive charge with annular ignition gap |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3736875A (en) |
| BE (1) | BE756502A (en) |
| DE (1) | DE1948058A1 (en) |
| FR (1) | FR2062496A5 (en) |
| GB (1) | GB1309329A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB387039I5 (en) * | 1972-08-10 | 1975-01-28 | ||
| US4250792A (en) * | 1978-03-20 | 1981-02-17 | Dynamit Nobel Aktiengesellschaft | Process for the production of compacted explosive charges |
| US4291624A (en) * | 1977-02-12 | 1981-09-29 | Rheinmetall Gmbh | Explosive charges |
| US4359943A (en) * | 1980-09-02 | 1982-11-23 | The United States Of America As Represented By The Secretary Of The Army | Shaped charge warhead including shock wave forming surface |
| US4450124A (en) * | 1978-12-04 | 1984-05-22 | Dynamit Nobel Aktiengesellschaft | Production of compacted, large-caliber explosive charges |
| US4455914A (en) * | 1978-12-04 | 1984-06-26 | Dynamit Nobel Aktiengesellschaft | Process for the production of compacted explosive devices for ammunition or explosive charges, especially those of a large caliber |
| US4499830A (en) * | 1981-06-29 | 1985-02-19 | The United States Of America As Represented By The Secretary Of The Army | High lethality warheads |
| US4594946A (en) * | 1984-05-04 | 1986-06-17 | Diehl Gmbh & Co. | Shaped charge chain with booster |
| US4594947A (en) * | 1983-07-28 | 1986-06-17 | Commissariat A L'energie Atomique | Apparatus for shaping a detonation wave |
| US4711181A (en) * | 1985-12-18 | 1987-12-08 | Diehl Gmbh & Co. | Warhead with rotationally-symmetrical hollow charge |
| US4829901A (en) * | 1987-12-28 | 1989-05-16 | Baker Hughes Incorporated | Shaped charge having multi-point initiation for well perforating guns and method |
| US4892039A (en) * | 1989-03-09 | 1990-01-09 | The United States Of America As Represented By The Secretary Of The Army | Ring detonator for shaped-charge warheads |
| US4938143A (en) * | 1987-04-29 | 1990-07-03 | Trojan Corporation | Booster shaped for high-efficiency detonating |
| US4987818A (en) * | 1989-05-23 | 1991-01-29 | Alford Sidney C | Shaping apparatus for an explosive charge |
| US5259317A (en) * | 1983-11-12 | 1993-11-09 | Rheinmetall Gmbh | Hollow charge with detonation wave guide |
| US5756925A (en) * | 1996-05-23 | 1998-05-26 | The United States Of America As Represented By The United States Department Of Energy | Precision flyer initiator |
| US20050115391A1 (en) * | 2003-10-14 | 2005-06-02 | Baker Ernest L. | Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator |
| US10048047B2 (en) * | 2014-08-06 | 2018-08-14 | Alba Manufacturing Corp. | Explosive booster |
| US20220074719A1 (en) * | 2020-03-03 | 2022-03-10 | Geodynamics, Inc. | Asymmetric initiated shaped charge and method for making a slot-like perforation |
| RU2840910C1 (en) * | 2024-03-27 | 2025-05-30 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ КАЗЕННОЕ ВОЕННОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ "Военная академия Ракетных войск стратегического назначения имени Петра Великого" МИНИСТЕРСТВА ОБОРОНЫ РОССИЙСКОЙ ФЕДЕРАЦИИ | Ammunition charge |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2417890C3 (en) * | 1974-04-11 | 1985-03-14 | Siemens AG, 1000 Berlin und 8000 München | Dental facility |
| DE2816528C1 (en) * | 1978-04-17 | 1991-01-03 | Rheinmetall Gmbh | Double hollow charge in coaxial tandem arrangement, especially for armor-piercing projectiles |
| GB2354309B (en) * | 1978-05-22 | 2001-07-04 | Hunting Eng Ltd | Explosive devices |
| DE2852359C1 (en) * | 1978-12-04 | 1991-02-21 | Dynamit Nobel Ag | Inert insert for detonation wave guidance in shaped charges |
| FR2634876B1 (en) * | 1980-06-13 | 1991-04-05 | France Etat Armement | EXPLOSIVE CHARGE FORMED |
| IT1236493B (en) * | 1981-02-27 | 1993-03-11 | Secr Defence Brit | IMPROVEMENT IN DETONATION DEVICES FOR EXPLOSIVE CHARGES |
| GB2209819B (en) * | 1987-09-15 | 1991-04-17 | Alford Sidney C | Shaping apparatus for an explosive charge |
| DE3843884A1 (en) * | 1988-12-24 | 1990-07-26 | Dynamit Nobel Ag | Device for annular detonation of a shaped charge |
| RU2160828C2 (en) * | 1999-03-03 | 2000-12-20 | Шакиров Рустам Анисович | Jet-charge perforator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2892407A (en) * | 1952-01-28 | 1959-06-30 | Norman A Macleod | Shaped cavity explosive charge |
| US3100445A (en) * | 1959-01-14 | 1963-08-13 | Borg Warner | Shaped charge and method of firing the same |
| US3103882A (en) * | 1949-01-15 | 1963-09-17 | William L Gilliland | Explosive cartridges and explosives |
| US3443518A (en) * | 1967-09-26 | 1969-05-13 | Donald W Cross | Multi-point ignition system for shaped charges |
| DE1571283A1 (en) * | 1966-12-05 | 1969-05-29 | Bundesrepublik Deutschland D D | Cylindrical shaped charge |
| US3451339A (en) * | 1964-03-03 | 1969-06-24 | Tech De Rech Ind Et Mechanique | Priming explosive devices |
-
0
- BE BE756502D patent/BE756502A/en unknown
-
1969
- 1969-09-23 DE DE19691948058 patent/DE1948058A1/en active Pending
-
1970
- 1970-09-22 FR FR7034298A patent/FR2062496A5/fr not_active Expired
- 1970-09-22 GB GB4517770A patent/GB1309329A/en not_active Expired
- 1970-09-23 US US00074801A patent/US3736875A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3103882A (en) * | 1949-01-15 | 1963-09-17 | William L Gilliland | Explosive cartridges and explosives |
| US2892407A (en) * | 1952-01-28 | 1959-06-30 | Norman A Macleod | Shaped cavity explosive charge |
| US3100445A (en) * | 1959-01-14 | 1963-08-13 | Borg Warner | Shaped charge and method of firing the same |
| US3451339A (en) * | 1964-03-03 | 1969-06-24 | Tech De Rech Ind Et Mechanique | Priming explosive devices |
| DE1571283A1 (en) * | 1966-12-05 | 1969-05-29 | Bundesrepublik Deutschland D D | Cylindrical shaped charge |
| US3443518A (en) * | 1967-09-26 | 1969-05-13 | Donald W Cross | Multi-point ignition system for shaped charges |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB387039I5 (en) * | 1972-08-10 | 1975-01-28 | ||
| US3924510A (en) * | 1972-08-10 | 1975-12-09 | Dynamit Nobel Ag | Process for the production of explosive devices surrounded by a case |
| US4291624A (en) * | 1977-02-12 | 1981-09-29 | Rheinmetall Gmbh | Explosive charges |
| US4250792A (en) * | 1978-03-20 | 1981-02-17 | Dynamit Nobel Aktiengesellschaft | Process for the production of compacted explosive charges |
| US4455914A (en) * | 1978-12-04 | 1984-06-26 | Dynamit Nobel Aktiengesellschaft | Process for the production of compacted explosive devices for ammunition or explosive charges, especially those of a large caliber |
| US4450124A (en) * | 1978-12-04 | 1984-05-22 | Dynamit Nobel Aktiengesellschaft | Production of compacted, large-caliber explosive charges |
| US4359943A (en) * | 1980-09-02 | 1982-11-23 | The United States Of America As Represented By The Secretary Of The Army | Shaped charge warhead including shock wave forming surface |
| US4499830A (en) * | 1981-06-29 | 1985-02-19 | The United States Of America As Represented By The Secretary Of The Army | High lethality warheads |
| US4594947A (en) * | 1983-07-28 | 1986-06-17 | Commissariat A L'energie Atomique | Apparatus for shaping a detonation wave |
| US5259317A (en) * | 1983-11-12 | 1993-11-09 | Rheinmetall Gmbh | Hollow charge with detonation wave guide |
| US4594946A (en) * | 1984-05-04 | 1986-06-17 | Diehl Gmbh & Co. | Shaped charge chain with booster |
| US4711181A (en) * | 1985-12-18 | 1987-12-08 | Diehl Gmbh & Co. | Warhead with rotationally-symmetrical hollow charge |
| US4938143A (en) * | 1987-04-29 | 1990-07-03 | Trojan Corporation | Booster shaped for high-efficiency detonating |
| US4829901A (en) * | 1987-12-28 | 1989-05-16 | Baker Hughes Incorporated | Shaped charge having multi-point initiation for well perforating guns and method |
| US4892039A (en) * | 1989-03-09 | 1990-01-09 | The United States Of America As Represented By The Secretary Of The Army | Ring detonator for shaped-charge warheads |
| US4987818A (en) * | 1989-05-23 | 1991-01-29 | Alford Sidney C | Shaping apparatus for an explosive charge |
| US5756925A (en) * | 1996-05-23 | 1998-05-26 | The United States Of America As Represented By The United States Department Of Energy | Precision flyer initiator |
| US20050115391A1 (en) * | 2003-10-14 | 2005-06-02 | Baker Ernest L. | Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator |
| US6925924B2 (en) * | 2003-10-14 | 2005-08-09 | Molycorp Inc. | Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator |
| US20050188878A1 (en) * | 2003-10-14 | 2005-09-01 | Baker Ernest L. | Unique multiple point initiated shaped charge perforator and method for its use |
| AU2010249294B2 (en) * | 2003-10-14 | 2011-09-01 | Molycorp, Inc. | Method to improve perforating effectiveness using a charge perforator |
| US10048047B2 (en) * | 2014-08-06 | 2018-08-14 | Alba Manufacturing Corp. | Explosive booster |
| US20220074719A1 (en) * | 2020-03-03 | 2022-03-10 | Geodynamics, Inc. | Asymmetric initiated shaped charge and method for making a slot-like perforation |
| RU2840910C1 (en) * | 2024-03-27 | 2025-05-30 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ КАЗЕННОЕ ВОЕННОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ "Военная академия Ракетных войск стратегического назначения имени Петра Великого" МИНИСТЕРСТВА ОБОРОНЫ РОССИЙСКОЙ ФЕДЕРАЦИИ | Ammunition charge |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1309329A (en) | 1973-03-07 |
| BE756502A (en) | 1971-03-01 |
| FR2062496A5 (en) | 1971-06-25 |
| DE1948058A1 (en) | 1971-03-25 |
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