US4430939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear shaped charges
Assignee: Individual
•
Filing: 1981-11-19
•
Granted: 1984-02-14
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Expires: 2001-11-19
Abstract
Abstract A linear shaped charge has a v-shaped indentation cladded with e.g. lead. The explosive body is formed of discrete explosive elements, such as detonator cords, at least one of which is positioned along the apex of the indentation so that detonation can be initiated in that region.
Inventors
- 👤 Gordon Harrold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:11
CPC Classifications
F; F42; F42B; F42B1/00; F42B1/02; F42B3/00; F42B3/087; F42B3/093
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
A linear shaped charge comprising an elongate explosive body having a longitudinally extending indentation therein of substantially V-shaped cross section which indentation is provided with a cladding material, wherein the explosive body comprises a plurality of elongate explosive elements, one of which is positioned above and adjacent the apex of the indentation and is separated from the remainder of the explosive body, and means are provided for initiating detonation of the explosive body in said one element.
Claim 2
Dependent Claim
77 words
A linear shaped charge comprising an elongate explosive body having a longitudinally extending indentation therein of substantially V-shaped cross section which indentation is provided with a cladding material, wherein the explosive body comprises a plurality of elongate explosive elements, one of which is positioned above and adjacent the apex of the indentation and is separated from the remainder of the explosive body, and means are provided for initiating detonation of the explosive body in said one element.
Claim 3
Dependent Claim
26 words
A charge as claimed in claim 1, wherein a divider is provided to separate the elements adjacent the apex from the remainder of the explosive body.
Claim 4
Dependent Claim
13 words
A charge as claimed in claim 1, wherein the explosive elements are pre-fabricated.
Claim 5
Dependent Claim
14 words
A charge as claimed in claim 3 wherein the explosive elements comprise detonator cords.
Claim 6
Dependent Claim
30 words
A charge as claimed in claim 1 comprising at least three explosive elements, one positioned adjacent the apex of the indentation and two positioned adjacent the legs of the indentation.
Claim 7
Dependent Claim
23 words
A charge as claimed in claim 5 wherein said two explosive elements are spaced from the ends of the legs of the indentation.
Claim 8
Dependent Claim
20 words
A charge as claimed in claim 1 wherein the detonation initiating means comprises a detonator connected to said one element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |