US3382802A - Fuse having an improved sheathing - Google Patents
Fuse having an improved sheathing Download PDFInfo
- Publication number
- US3382802A US3382802A US519467A US51946766A US3382802A US 3382802 A US3382802 A US 3382802A US 519467 A US519467 A US 519467A US 51946766 A US51946766 A US 51946766A US 3382802 A US3382802 A US 3382802A
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- United States
- Prior art keywords
- explosive
- fuse
- sheathing
- fuses
- improved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002360 explosive Substances 0.000 description 43
- 239000002184 metal Substances 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002245 particle Substances 0.000 description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000012815 thermoplastic material Substances 0.000 description 8
- 239000011133 lead Substances 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 5
- 238000005474 detonation Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 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 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229960004321 pentaerithrityl tetranitrate Drugs 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000000015 trinitrotoluene Substances 0.000 description 2
- IUKSYUOJRHDWRR-UHFFFAOYSA-N 2-diazonio-4,6-dinitrophenolate Chemical class [O-]C1=C([N+]#N)C=C([N+]([O-])=O)C=C1[N+]([O-])=O IUKSYUOJRHDWRR-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- USXDFAGDIOXNML-UHFFFAOYSA-N Fulminate Chemical compound [O-][N+]#[C-] USXDFAGDIOXNML-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical class O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000000026 Pentaerythritol tetranitrate Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SFDJOSRHYKHMOK-UHFFFAOYSA-N nitramide Chemical class N[N+]([O-])=O SFDJOSRHYKHMOK-UHFFFAOYSA-N 0.000 description 1
- RBXVOQPAMPBADW-UHFFFAOYSA-N nitrous acid;phenol Chemical class ON=O.OC1=CC=CC=C1 RBXVOQPAMPBADW-UHFFFAOYSA-N 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000012260 resinous material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C5/00—Fuses, e.g. fuse cords
- C06C5/04—Detonating fuses
Definitions
- This invention relates to fuses. More particularly, it relates to fuses having a new and improved sheathing or casing. Even more particularly, the invention relates to fuses having a sheathing or casing made from strands or threads of thermoplastic material or a ductile metal or from filaments or bands of thermoplastic material or glass.
- fuses serve to transmit detonations to distantly located systems which are adapted to be detonated.
- Such fuses comprise a casing or sheathing, the so-called enclosure, having a continuous explosive core for propagating the initial impulse, wherein the correspondin velocity of propagation of the initial impulse depends upon the kind of explosive being used and the concentration thereof.
- the type and construction of the enclosure are of decisive significance in obtaining an advantageous utilization of the properties of the explosive.
- the quantity thereof employed is less than the socalled critical diameter of an explosive column for a given explosive without an enclosure, at which critical diameter the explosive essentially detonates completely, the danger of the ignition of the detonation may be effectively counteracted by selecting a correspondingly strong enclosure.
- significant difficulties in the choice and construction of a suitable enclosure therefor result from the fact that different conditions must be taken into account for practically every explosive.
- Trinitrotoluene was initially employed as the explosive in fuses, and a lead tube served therein as the enclosure.
- the lead tube was filled with the explosive and the tube, initially having a relatively large diameter, was successively drawn through a number of extruder nozzles having progressively smaller inside cross-sections until finally, at a corresponding elongation of the tube, the desired small diameter of the fuse was attained.
- the metal enclosures were uneconomical and had various important disadvantages, such as, for ex ample, great weight and brittleness which led to easy breakage at low temperatures and which only permitted a discontinuous preparation of fuses having certain lengths.
- desensitized mercuric fulminate was employed as the explosive, and particularly after the advent of pentaerythritol tetranitrate, it became possible to depart from the metal enclosures having the above-mentioned disadvantages and to cover or braid the powdery explosive core with textile fibers.
- One of the objects of the present invention is to provide an improved fuse which does not have the disadvantages and deficiencies inherent in the prior art fuses as mentioned hereina-bove.
- Another object of the present invention is to provide an improved fuse which has a reduced explosive content but, at the same time, does not present a danger of premature explosion.
- a further object of the invention is to provide an improved fuse having a casing or sheathing which may be made efficaciously and economically.
- a still further object of the invention is to provide an improved fuse having a reduced explosive content which may be prepared in a continuous manner efiicaciously.
- Yet another object of the present invention is to progi-de an improved fuse which is light in weight and dura-
- fuses having a reduced explosive content which detonate faultlessly and completely may be obtained if the sheathing or casing therefor is made from strands or threads of thermoplastic material and/or a ductile metal or from filaments or hands of a thermoplastic material and/or glass made from fibers or threads thereof.
- the present invention involves adhering to the old proven principle but also without the disadvantages and drawbacks thereof, such as were encountered with the old solid metal casings.
- the single figure is an elevational view, partially broken away, of an exemplary fuse in accordance with the present invention.
- the invention is illustrated as a fuse broadly comprising an explosive core 6 enveloped first by a strip 5 of paper, synthetic resinous material or the like, rolled in the shape of a tube at right angles to its longitudinal extension.
- the strip 5 is followed by the wire-like material 4 of metal or plastic,
- the fibrous material 3 wound in a spiral manner, the fibrous material 3, the fibrous material 2, for example, of glass or plastic, and, finally, by an outer shell or sheathing It in the form of a tube made of, for example, a thermoplastic resin.
- fuses having a reduced explosive content is meant, for example, fuses having an amount of explosive of 7 grams per meter and less.
- the quantity of explosive may be more greatly reduced, the greater the proportionate amount of thermoplastic or n etal threads or strands or glass fibers employed in the enclosure.
- Suitable filler materials for the fuses herein include all of the primary explosives and igniting agents having a reaction zone length of less than 0.5 mm.
- substances such as lead azide, diazodinitrophenol, lead salts of the nitrophenols and lead triethanolaminoperchlorate, as well as all the solid nitric acid esters which have a detonation sensitivity either equal to or greater than that of nitropentaerythritol, and nitroamines having a sensitivity to detonation which is either equal to or greater than that of trimethylenetrinitroamine (T may be employed.
- the explosive particles should have a size such that they will pass through a strainer having an inside width mesh of 100 and wherein at least half of the particles of explosive will also pass through a strainer having an inside width mesh of 50
- This embodiment is of particular importance in the preparation of fuses having a very low explosive content of, for example, 1 or 2 grams per meter, since the particle sizes obtained by this straining process guarantee a safe propagation of the detonation in fuses having an explosive core with a very small diameter.
- this embodiment may also be advantageously utilized in fuses of any desired type, such as those having a relatively large explosive content of, for example, 7 grams per meter or more.
- thermoplastic material which may be employed in the present invention includes any of the synthetic resins that may be softened by heat which regain their natural properties upon cooling.
- resins are well known in the art and include, for example, polyvinyl chloride, copolymers of vinyl chloride with vinyl acetate( particularly containing from 2 to vinyl acetate) and/or styrene, polyethylene, polypropylene, copolymers of ethylene and propylene and polymers and copolymcrs of styrene and of the arcylates and methacrylates.
- These resins are described in, for example. Modern Plastics Encyclopedia, Issue for 1963, volume 40, No. 1A, Sept. 2, 1962.
- the particular thermoplastic resin employed is not critical and may be chosen as desired.
- a ductile metal is one that may be lengthened or flattened out without losing continuity when subjected to tensile stresses or rolling.
- Examples .4 ⁇ . thereof which may be employed in the present invention include bronze, copper, lead and pure iron.
- the manufacture of the fuse sheathing according to the present invention may be carried out by known techniques but the most preferred method therefor is by spinning.
- threads or thread-like elements as used herein includes suitably processed fibers, wires and single continuous filaments as Well as mutifilaments of such elements formed into bands, strands or the like.
- a fuse comprising an explosive core encased by a sheathing, said fuse having, at the most, an amount of explosive of 7 grams per meter, said explosive having a reaction zone length of less than 0.5 mm., and said sheathing consisting essentially of spun thread-like elements of a material selected from the group consisting of ductile metals and polymers and copolymers of vinyl chloride, vinyl acetate, styrene, ethylene, propylene, the acrylates and the methacrylates.
- said spun thread-like material is a thermoplastic resin selected from the group consisting of polymers and copolymers of vinyl chloride, vinyl acetate, styrene, ethylene, propylene, the acrylates and the methacrylates.
- said spun thread-like material is a ductile metal selected from the group consisting of bronze, copper, lead and iron.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Description
May 14, 1968 J. PRIOR ET AL 3,382,802
FUSE HAVING AN IMPROVED SHEATHING Filed Jan. 10, 1966 OUTER SHELL (THERMOPLASTIC 3-FIBROUS TUBE) MATERIAL 5 IS QW 4-WlRE-TYPE EXPLOSIVE 2" FIBROUS MATERIAL MATERIAL INVENTORS JOSEF PRIOR HILDEBERT WUCKEL ALOYS FLORIN BY e ATTORNEYS United States Patent 3,382,802 FUSE HAVING AN IMPROVED SHEATHENG Josef Prior, Troisdorf, Cologne, and Hildebert l/Vuclrel and Aloys Florin, Spich, Cologne, Germany, assignors to Dynamit Nobel Akfiengesellschaft, Troisdorf, Germay Filed Jan. 10, 1966, Ser. No. 519,467 Claims priority, application Germany, Jan. 19, 1965,
8 Claims. Cl. 102-27 ABSTRACT OF THE DESCLOSURE This invention relates to fuses. More particularly, it relates to fuses having a new and improved sheathing or casing. Even more particularly, the invention relates to fuses having a sheathing or casing made from strands or threads of thermoplastic material or a ductile metal or from filaments or bands of thermoplastic material or glass.
It is well known in the art that fuses serve to transmit detonations to distantly located systems which are adapted to be detonated. Such fuses comprise a casing or sheathing, the so-called enclosure, having a continuous explosive core for propagating the initial impulse, wherein the correspondin velocity of propagation of the initial impulse depends upon the kind of explosive being used and the concentration thereof. The type and construction of the enclosure are of decisive significance in obtaining an advantageous utilization of the properties of the explosive. For example, if, in an effort to manage with as small a quantity of explosive as possible, the quantity thereof employed is less than the socalled critical diameter of an explosive column for a given explosive without an enclosure, at which critical diameter the explosive essentially detonates completely, the danger of the ignition of the detonation may be effectively counteracted by selecting a correspondingly strong enclosure. However, significant difficulties in the choice and construction of a suitable enclosure therefor result from the fact that different conditions must be taken into account for practically every explosive.
Trinitrotoluene (TNT) was initially employed as the explosive in fuses, and a lead tube served therein as the enclosure. In preparing such a fuse, the lead tube was filled with the explosive and the tube, initially having a relatively large diameter, was successively drawn through a number of extruder nozzles having progressively smaller inside cross-sections until finally, at a corresponding elongation of the tube, the desired small diameter of the fuse was attained.
However, the metal enclosures were uneconomical and had various important disadvantages, such as, for ex ample, great weight and brittleness which led to easy breakage at low temperatures and which only permitted a discontinuous preparation of fuses having certain lengths. When desensitized mercuric fulminate was employed as the explosive, and particularly after the advent of pentaerythritol tetranitrate, it became possible to depart from the metal enclosures having the above-mentioned disadvantages and to cover or braid the powdery explosive core with textile fibers. This is done by introducing or transferring the explosive from a filling funnel into a thin band or ribbon made of paper, a synthetic material or an otherwise suitable material, the band being continuously wound or wrapped at the lower end thereof in a spiraling and overlapping fashion. The band filled with explosive is then either spirally wound or braided with several layers of textile filaments twisted from fibers. Depending upon the particular requirement therefor, and particularly as a protection against moisture, the fuse thus obtained may be additionally provided with a coating of lacquer, thermoplastic material or the like and, as a protection against mechanical damage, with a wide-mesh covering or braiding made from metal strands.
Recently, fuses having considerably reduced explosive contents have been greatly developed. The reduction in the quantity of explosive employed has become possible either by returning to the old principle of having the explosive surrounded or enclosed with a ductile metal or by enclosing the explosive with a compact sheathing made from a thermoplastic material. While, in the first instance, theaforementioned disadvantages and drawbacks must again be accepted as a logical consequence, the latter embodiment of having a compact sheathing made from a thermoplastic material involves considerable danger, particularly when making the explosive fuses. This danger results from the fact that the explosive is introduced directly behind an annular nozzle into the still hot synthetic plastic tube which is continuously being extruded therefrom.
One of the objects of the present invention is to provide an improved fuse which does not have the disadvantages and deficiencies inherent in the prior art fuses as mentioned hereina-bove.
Another object of the present invention is to provide an improved fuse which has a reduced explosive content but, at the same time, does not present a danger of premature explosion.
A further object of the invention is to provide an improved fuse having a casing or sheathing which may be made efficaciously and economically.
A still further object of the invention is to provide an improved fuse having a reduced explosive content which may be prepared in a continuous manner efiicaciously.
Yet another object of the present invention is to progi-de an improved fuse which is light in weight and dura- These and other objects and advantages of the present invention will become apparent to those skilled in the art from a consideration of the following specification and claims.
In accordance with the present invention, fuses having a reduced explosive content which detonate faultlessly and completely may be obtained if the sheathing or casing therefor is made from strands or threads of thermoplastic material and/or a ductile metal or from filaments or hands of a thermoplastic material and/or glass made from fibers or threads thereof. Thus, instead of employing textile filaments which have the aforementioned disadvantages and drawbacks, the present invention involves adhering to the old proven principle but also without the disadvantages and drawbacks thereof, such as were encountered with the old solid metal casings.
In the attached drawing, the single figure is an elevational view, partially broken away, of an exemplary fuse in accordance with the present invention.
Referring now to said drawing, the invention is illustrated as a fuse broadly comprising an explosive core 6 enveloped first by a strip 5 of paper, synthetic resinous material or the like, rolled in the shape of a tube at right angles to its longitudinal extension. The strip 5 is followed by the wire-like material 4 of metal or plastic,
3 wound in a spiral manner, the fibrous material 3, the fibrous material 2, for example, of glass or plastic, and, finally, by an outer shell or sheathing It in the form of a tube made of, for example, a thermoplastic resin.
By fuses having a reduced explosive content is meant, for example, fuses having an amount of explosive of 7 grams per meter and less. In fact, the quantity of explosive may be more greatly reduced, the greater the proportionate amount of thermoplastic or n etal threads or strands or glass fibers employed in the enclosure. Thus, it is possible, for example, when using a sheathing consisting entirely of metal strands or wires or of glass fiber filaments or bands, to reduce the explosive quantity to 0.8 gram per meter without jeopardizing or hindering the operation and function of the fuse.
Suitable filler materials for the fuses herein include all of the primary explosives and igniting agents having a reaction zone length of less than 0.5 mm. Thus, for example, substances such as lead azide, diazodinitrophenol, lead salts of the nitrophenols and lead triethanolaminoperchlorate, as well as all the solid nitric acid esters which have a detonation sensitivity either equal to or greater than that of nitropentaerythritol, and nitroamines having a sensitivity to detonation which is either equal to or greater than that of trimethylenetrinitroamine (T may be employed.
According to a further embodiment of the present invention, it has also been found that for the safe operation of a fuse, particularly one having a reduced amount of explosive, the explosive particles should have a size such that they will pass through a strainer having an inside width mesh of 100 and wherein at least half of the particles of explosive will also pass through a strainer having an inside width mesh of 50 This embodiment is of particular importance in the preparation of fuses having a very low explosive content of, for example, 1 or 2 grams per meter, since the particle sizes obtained by this straining process guarantee a safe propagation of the detonation in fuses having an explosive core with a very small diameter. In principle, however, this embodiment may also be advantageously utilized in fuses of any desired type, such as those having a relatively large explosive content of, for example, 7 grams per meter or more.
The thermoplastic material which may be employed in the present invention includes any of the synthetic resins that may be softened by heat which regain their natural properties upon cooling. Such resins are well known in the art and include, for example, polyvinyl chloride, copolymers of vinyl chloride with vinyl acetate( particularly containing from 2 to vinyl acetate) and/or styrene, polyethylene, polypropylene, copolymers of ethylene and propylene and polymers and copolymcrs of styrene and of the arcylates and methacrylates. These resins are described in, for example. Modern Plastics Encyclopedia, Issue for 1963, volume 40, No. 1A, Sept. 2, 1962. The particular thermoplastic resin employed is not critical and may be chosen as desired.
As is known in the art, a ductile metal is one that may be lengthened or flattened out without losing continuity when subjected to tensile stresses or rolling. Examples .4}. thereof which may be employed in the present invention include bronze, copper, lead and pure iron.
The manufacture of the fuse sheathing according to the present invention may be carried out by known techniques but the most preferred method therefor is by spinning.
The term threads or thread-like elements as used herein includes suitably processed fibers, wires and single continuous filaments as Well as mutifilaments of such elements formed into bands, strands or the like.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention and all such modifications are intended to be included within the scope of the following claims.
We claim:
it. A fuse comprising an explosive core encased by a sheathing, said fuse having, at the most, an amount of explosive of 7 grams per meter, said explosive having a reaction zone length of less than 0.5 mm., and said sheathing consisting essentially of spun thread-like elements of a material selected from the group consisting of ductile metals and polymers and copolymers of vinyl chloride, vinyl acetate, styrene, ethylene, propylene, the acrylates and the methacrylates.
2. The fuse according to claim ll, wherein the ductile metal is bronze.
3. The fuse according to claim 1, wherein at least half of the particles of explosive have a maximum particle size Of M.
4. The fuse according to claim ll, wherein said sheathing comprises bands of said polymers and copolymers made from said thread-like elements thereof.
5. The fuse according to claim 11, wherein the particles of explosive have a maximum particle size of 100,.
6. The fuse according to claim 5, wherein the amount of explosive in said fuse is l to 2 grams per meter and wherein at least half of the particles of explosive have a maximum particle size of 5011..
7. The fuse according to claim 1, wherein said spun thread-like material is a thermoplastic resin selected from the group consisting of polymers and copolymers of vinyl chloride, vinyl acetate, styrene, ethylene, propylene, the acrylates and the methacrylates.
8. The fuse according to claim 1, wherein said spun thread-like material is a ductile metal selected from the group consisting of bronze, copper, lead and iron.
References Cited UNITED STATES PATENTS 2,445,032 7/ 1948 McFarland 102-27 2,982,210 5/1961 Andrew et al. 102-27 2,992,087 7/1961 Fassnacht et a1 149-111 3,155,038 11/1964 Smith 102-27 3,260,201 7/1966 Kelly et a1. 102-27 BENJAMIN A. BORCHELT, Primary Examiner. V. R. PENDEGRASS, Assistant Examiner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED46288A DE1248526B (en) | 1965-01-19 | 1965-01-19 | Detonating cord |
Publications (1)
Publication Number | Publication Date |
---|---|
US3382802A true US3382802A (en) | 1968-05-14 |
Family
ID=7049618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US519467A Expired - Lifetime US3382802A (en) | 1965-01-19 | 1966-01-10 | Fuse having an improved sheathing |
Country Status (5)
Country | Link |
---|---|
US (1) | US3382802A (en) |
BE (1) | BE675185A (en) |
DE (1) | DE1248526B (en) |
FR (1) | FR1461014A (en) |
GB (1) | GB1131027A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3474730A (en) * | 1967-09-20 | 1969-10-28 | Apache Powder Co | Luminescent coated detonating fuse |
US3792660A (en) * | 1972-03-31 | 1974-02-19 | Gen Motors Corp | Flexible pyrotechnic relay |
FR2218548A1 (en) * | 1973-02-19 | 1974-09-13 | Ici Ltd | |
US3867884A (en) * | 1973-02-19 | 1975-02-25 | Ici Ltd | Explosive fuse-cord |
US3908549A (en) * | 1972-09-06 | 1975-09-30 | Ici Ltd | Explosive fuse-cord |
US4011816A (en) * | 1971-10-06 | 1977-03-15 | The United States Of America As Represented By The Secretary Of The Navy | Continuous line confined detonating fuse to provide a series of work pulses (U) |
US4232606A (en) * | 1977-10-17 | 1980-11-11 | E. I. Du Pont De Nemours And Company | Explosive connecting cord |
US6247410B1 (en) * | 1998-12-10 | 2001-06-19 | The United States Of America As Represented By The Secretary Of The Navy | High-output insensitive munition detonating cord |
US20080028970A1 (en) * | 2004-06-01 | 2008-02-07 | Walsh Brendan M | Detonating Cord With Protective Jacket |
CN107345782A (en) * | 2017-05-19 | 2017-11-14 | 湖北帅力化工有限公司 | A kind of cotton thread mixes the cotton modeling primacord of establishment with plastic cord |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2207986A (en) * | 1986-11-28 | 1989-02-15 | Royal Ordnance Plc | Explosive hoses; destroying mines, wire entanglements etc |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445032A (en) * | 1946-02-26 | 1948-07-13 | Atlas Powder Co | Detonating fuse |
US2982210A (en) * | 1958-06-25 | 1961-05-02 | Ensign Bickford Co | Connecting cord |
US2992087A (en) * | 1959-11-03 | 1961-07-11 | Du Pont | New explosive |
US3155038A (en) * | 1962-09-21 | 1964-11-03 | Ensign Bickford Co | Detonating fuse |
US3260201A (en) * | 1963-11-15 | 1966-07-12 | Ensign Bickford Co | Fuse having cellular plastic sheath |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125024A (en) * | 1964-03-17 | Explosive connecting cord | ||
US2380312A (en) * | 1942-11-19 | 1945-07-10 | Du Pont | Detonating fuse |
-
1965
- 1965-01-19 DE DED46288A patent/DE1248526B/en active Pending
- 1965-12-14 FR FR42242A patent/FR1461014A/en not_active Expired
-
1966
- 1966-01-10 US US519467A patent/US3382802A/en not_active Expired - Lifetime
- 1966-01-17 BE BE675185D patent/BE675185A/xx unknown
- 1966-01-18 GB GB2396/66A patent/GB1131027A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445032A (en) * | 1946-02-26 | 1948-07-13 | Atlas Powder Co | Detonating fuse |
US2982210A (en) * | 1958-06-25 | 1961-05-02 | Ensign Bickford Co | Connecting cord |
US2992087A (en) * | 1959-11-03 | 1961-07-11 | Du Pont | New explosive |
US3155038A (en) * | 1962-09-21 | 1964-11-03 | Ensign Bickford Co | Detonating fuse |
US3260201A (en) * | 1963-11-15 | 1966-07-12 | Ensign Bickford Co | Fuse having cellular plastic sheath |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3474730A (en) * | 1967-09-20 | 1969-10-28 | Apache Powder Co | Luminescent coated detonating fuse |
US4011816A (en) * | 1971-10-06 | 1977-03-15 | The United States Of America As Represented By The Secretary Of The Navy | Continuous line confined detonating fuse to provide a series of work pulses (U) |
US3792660A (en) * | 1972-03-31 | 1974-02-19 | Gen Motors Corp | Flexible pyrotechnic relay |
US3908549A (en) * | 1972-09-06 | 1975-09-30 | Ici Ltd | Explosive fuse-cord |
FR2218548A1 (en) * | 1973-02-19 | 1974-09-13 | Ici Ltd | |
US3867884A (en) * | 1973-02-19 | 1975-02-25 | Ici Ltd | Explosive fuse-cord |
US4232606A (en) * | 1977-10-17 | 1980-11-11 | E. I. Du Pont De Nemours And Company | Explosive connecting cord |
US6247410B1 (en) * | 1998-12-10 | 2001-06-19 | The United States Of America As Represented By The Secretary Of The Navy | High-output insensitive munition detonating cord |
US20080028970A1 (en) * | 2004-06-01 | 2008-02-07 | Walsh Brendan M | Detonating Cord With Protective Jacket |
US7921776B2 (en) | 2004-06-01 | 2011-04-12 | Ensign-Bickford Aerospace & Defense Company | Detonating cord with protective jacket |
CN107345782A (en) * | 2017-05-19 | 2017-11-14 | 湖北帅力化工有限公司 | A kind of cotton thread mixes the cotton modeling primacord of establishment with plastic cord |
Also Published As
Publication number | Publication date |
---|---|
FR1461014A (en) | 1966-12-02 |
DE1248526B (en) | 1967-08-24 |
GB1131027A (en) | 1968-10-16 |
BE675185A (en) | 1966-05-16 |
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