US3978796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Focused blast-fragment warhead
Assignee: United States Department of the Navy
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Filing: 1968-04-30
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Granted: 1976-09-07
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Expires: 1988-04-30
Abstract
Abstract The present invention relates to fragment projection-blast devices capablef focusing fragmentation and destructive blast effects. In particular, the invention takes the form of a warhead characterized by interior, multipoint initiation of detonation which increases metal velocity and enhances blast properties, a truncated cone charge and metal liner arrangement which controls metal projection direction and blast propagation, and end plates which partially confine gaseous products and enhance initial blast properties. According to the invention, an explosive composition is shaped by the projectile walls and by metal truncated cone arrangements on the warhead. Detonators located in the interior of the explosive compositon and opposite the apices of the truncated cones ignite simultaneously, causing directed fragmentation.
Inventors
- 👤 Emory E. Hackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:18
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/04; F42B12/10; F42B12/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
A fragmentation warhead exhibiting focused blast properties, comprising a body of explosive material having a generally cylindrical shape with annular conical corrugations radially and regularly disposed over its surface, said corrugations defining troughs therebetween, a projectile surrounding the cylindrical corrugated surface of the body, said projectile having its surface conforming to the shape of the body surface, an axial channel disposed within the body, a liner mounted in the channel, point initiation detonators embedded in the body, one of the detonators being disposed in confronting relation to each of said troughs whereby, upon initiation of the detonators, explosive of the body will produce shock waves that will act on the walls of the corrugations for fragmenting the projectile and projecting the fragments thereof in a direction normal to the axis of the warhead, arming means mounted in the liner and connected to said detonators, and end plates secured to the liner and to the projectile at opposite ends of the body for closing the ends of said body, said end plates partially confining gaseous explosion products produced upon detonation of the body, explosion of the body producing a focused blast characterized by increased metal projection and enhanced blast properties.
Claim 2
Dependent Claim
199 words
A fragmentation warhead exhibiting focused blast properties, comprising a body of explosive material having a generally cylindrical shape with annular conical corrugations radially and regularly disposed over its surface, said corrugations defining troughs therebetween, a projectile surrounding the cylindrical corrugated surface of the body, said projectile having its surface conforming to the shape of the body surface, an axial channel disposed within the body, a liner mounted in the channel, point initiation detonators embedded in the body, one of the detonators being disposed in confronting relation to each of said troughs whereby, upon initiation of the detonators, explosive of the body will produce shock waves that will act on the walls of the corrugations for fragmenting the projectile and projecting the fragments thereof in a direction normal to the axis of the warhead, arming means mounted in the liner and connected to said detonators, and end plates secured to the liner and to the projectile at opposite ends of the body for closing the ends of said body, said end plates partially confining gaseous explosion products produced upon detonation of the body, explosion of the body producing a focused blast characterized by increased metal projection and enhanced blast properties.
Claim 3
Dependent Claim
181 words
A fragmentation warhead exhibiting focused blast properties, comprising a body formed of an explosive material, said body being generally cylindrical in shape, having conical corrugations radially and regularly disposed over its surface, said corrugations defining troughs therebetween, and having an axial channel formed in the body; a liner mounted in the channel; a projectile surrounding the cylindrical corrugated surface of the body, said projectile having its surface conforming to the shape of the body surface; spaced point detonation means embedded in the body, and disposed to confront each of said troughs whereby, upon initiation of the detonation means, explosion of the body will produce shock waves that will act on the walls of the corrugations for fragmenting the projectile and projecting the fragments thereof in a direction normal to the axis of the warhead; arming means mounted in the liner and connected to said detonation means; and means closing the ends of the body for partially confining gaseous explosion products produced upon detonation thereof, explosion of the body producing a focused blast characterized by increased metal projection and enhanced blast properties.
Claim 4
Dependent Claim
181 words
A fragmentation warhead exhibiting focused blast properties, comprising a body formed of an explosive material, said body being generally cylindrical in shape, having conical corrugations radially and regularly disposed over its surface, said corrugations defining troughs therebetween, and having an axial channel formed in the body; a liner mounted in the channel; a projectile surrounding the cylindrical corrugated surface of the body, said projectile having its surface conforming to the shape of the body surface; spaced point detonation means embedded in the body, and disposed to confront each of said troughs whereby, upon initiation of the detonation means, explosion of the body will produce shock waves that will act on the walls of the corrugations for fragmenting the projectile and projecting the fragments thereof in a direction normal to the axis of the warhead; arming means mounted in the liner and connected to said detonation means; and means closing the ends of the body for partially confining gaseous explosion products produced upon detonation thereof, explosion of the body producing a focused blast characterized by increased metal projection and enhanced blast properties.
Claim 5
Dependent Claim
29 words
The invention as recited in claim 2, wherein said third mentioned means comprises end plates secured to the liner and to the projectile at opposite ends of the body.
Claim 6
Dependent Claim
15 words
The invention as recited in claim 2, wherein the projectile comprises a layer of fragments.
References Cited (Backward Citations)
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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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |