Patent US3782283A successfully refreshed from Google Patents.
US3782283A
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Defined disintegration of the casing of an explosive element
Assignee: Dynamit Nobel AG
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Filing: 1971-08-05
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Granted: 1974-01-01
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Expires: 1991-08-05
Abstract
Abstract An explosive device and processing for causing, upon detonation, the defined disintegration of the casing of the explosive device. This result can be achieved directly by providing cavities in the explosive charge of the device which conduct the high velocity gas flow generated during the reaction of the explosive to predetermined points along the casing. Preferably the explosive charge has a central bore which connects radially extending gaps. Alternatively, a defined disintegration can be obtained indirectly by including cavities in the explosive charge of the device which are subdivided into chambers by either explosive or inert materials. Finally, a fuze trail of explosive wires can be incorporated into the explosive charge to yield the same effect. Moreover, the explosive charge can be employed as a primer charge and disposed inside a main charge which, in turn, is enclosed by a casing.
Inventors
- 👤 P Lingens
- 👤 G Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:58
CPC Classifications
F; F42; F42B; F42B1/00
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
79 words
A device for disintegrating a casing into defined splinters comprising a fragmentable casing and means within said casing for producing fragments of a substantially predetermined size range, said means including an explosive charge hAving at least one cavity or gap arranged within said explosive charge so that, upon detonation of said explosive charge, the high velocity and density gas flow generated therein provides for defined disintegration of said fragmentable casing to producing fragments of said substantially predetermined size range.
Claim 2
Independent Claim
79 words
A device for disintegrating a casing into defined splinters comprising a fragmentable casing and means within said casing for producing fragments of a substantially predetermined size range, said means including an explosive charge hAving at least one cavity or gap arranged within said explosive charge so that, upon detonation of said explosive charge, the high velocity and density gas flow generated therein provides for defined disintegration of said fragmentable casing to producing fragments of said substantially predetermined size range.
Claim 3
Dependent Claim
28 words
The explosive device of claim 1 wherein said at least one cavity or gap includes a plurality of damming-up points for said gas flow, spaced at defined intervals.
Claim 4
Dependent Claim
15 words
The explosive device of claim 1 wherein said explosive charge includes a bore running therethrough.
Claim 5
Dependent Claim
22 words
The explosive device of claim 3 wherein said bore is divided into a plurality of defined chambers by a plurality of partitions.
Claim 6
Dependent Claim
13 words
The explosive device of claim 4 wherein said partitions comprise an explosive material.
Claim 7
Dependent Claim
13 words
The explosive device of claim 4 wherein said partitions comprise a non-explosive material.
Claim 8
Dependent Claim
20 words
The explosive device of claim 3 wherein passageways or gaps are arranged at defined intervals extending outwardly from said bore.
Claim 9
Dependent Claim
30 words
The explosive device of claim 7 wherein said enclosing casing is in direct contact with said explosive charge and said passageways or gaps extend between said bore and said casing.
Claim 10
Dependent Claim
13 words
The explosive device of claim 8 wherein said passageways or gaps are conically-flared.
Claim 11
Dependent Claim
19 words
The explosive device of claim 8 wherein the sides of each of said passageways or gaps are substantially parallel.
Claim 12
Dependent Claim
16 words
The explosive device of claim 8 wherein said passageways or gaps are filled by explosively-inert materials.
Claim 13
Dependent Claim
28 words
The explosive device of claim 8 wherein said casing is tubular-shaped and said explosive charge comprises a plurality of substantially identical annular elements consecutively spaced from each other.
Claim 14
Dependent Claim
20 words
The explosive device of claim 1 wherein said at least one cavity or gap is lined with an explosively-inert material.
Claim 15
Dependent Claim
33 words
The explosive device of claim 1 wherein said explosive charge is a primer charge and said explosive device further comprises a main explosive charge positioned between said primer charge and said enclosing casing.
Claim 16
Dependent Claim
24 words
The explosive device of claim 14 wherein said at least one cavity or gap is a bore including damming-points therein for said gas flow.
Claim 17
Dependent Claim
21 words
The explosive device of claim 14 wherein said at least one cavity or gap encloses a fuze train of explosive wires.
Claim 18
Dependent Claim
21 words
The explosive device of claim 1 wherein said at least one cavity or gap encloses a fuze train of explosive wires.
Claim 19
Dependent Claim
21 words
The explosive device of claim 1 wherein said explosive charge includes a plurality of outwardly-extending gaps spaced at a defined interval.
Claim 20
Dependent Claim
19 words
The explosive device of claim 18 wherein said explosive charge comprises a plurality of substantially identical consecutively-spaced explosive elements.
Claim 21
Dependent Claim
16 words
The explosive device of claim 19 wherein said gaps are filled by an explosively inert material.
Claim 22
Dependent Claim
25 words
The explosive device of claim 1 wherein said device is constructed to produce casing fragments having a maximum dimension of less than about 100 mm.
Claim 23
Dependent Claim
19 words
The explosive device of claim 21 wherein said fragments have a maximum dimension of less than about 40 mm.
Claim 24
Dependent Claim
37 words
The explosive device of claim 1, wherein the enclosing casing is a pipe having substantially the same wall thickness along the extent thereof and is formed of a material capable of producing fragments for piercing an object.
Claim 25
Dependent Claim
19 words
The explosive device of claim 23, wherein said material forming said enclosing casing is one of iron and steel.
Claim 26
Independent Claim
77 words
A device for disintegrating a casing into defined splinters comprising a fragmentable casing and means within said casing for producing fragments of a substantially predetermined size range, said means including an explosive charge and a fuze train of explosive wires disposed within said explosive charge and arranged so that upon detonation of said explosive charge by said fuze train defined disintegration of said fragmentable casing with the production of fragments of substantIally the predetermined size range results.
Claim 27
Independent Claim
77 words
A device for disintegrating a casing into defined splinters comprising a fragmentable casing and means within said casing for producing fragments of a substantially predetermined size range, said means including an explosive charge and a fuze train of explosive wires disposed within said explosive charge and arranged so that upon detonation of said explosive charge by said fuze train defined disintegration of said fragmentable casing with the production of fragments of substantIally the predetermined size range results.
Claim 28
Dependent Claim
53 words
A process for disintegrating a fragmentable casing into defined splinters comprising the steps of providing an explosive charge within the fragmentable casing, forming gaps or cavities within the explosive charge in such a manner that upon detonation of the explosive charge the casing is disintegrated into fragments of a substantially predetermined size range.
Claim 29
Dependent Claim
53 words
A process for disintegrating a fragmentable casing into defined splinters comprising the steps of providing an explosive charge within the fragmentable casing, forming gaps or cavities within the explosive charge in such a manner that upon detonation of the explosive charge the casing is disintegrated into fragments of a substantially predetermined size range.
Claim 30
Dependent Claim
29 words
The process of claim 26, including arranging the gaps or cavities to conduct the high velocity and density gas flow occurring during detonation to predetermined points at the casing.
Claim 31
Dependent Claim
46 words
The process of claim 26, further comprising the step of positioning a main explosive between the explosive charge and the casing and arranging the gaps or cavities to conduct the high velocity and density gas flow occurring during detonation to predetermined points at the main explosive.
Claim 32
Dependent Claim
24 words
The process of claim 26, further comprising the step of disposing a fuze train of explosive wires within at least one of the cavities.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |