US3750582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projectile with differential tandem shaped charges
Assignee: United States Department of the Army
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Filing: 1971-09-03
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Granted: 1973-08-07
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Expires: 1991-09-03
Abstract
Abstract A projectile utilizing tandem shaped charges is produced, said projectile having superior armor penetration power than previous shape charge projectiles. The invention described herein may be manufactured, used and licensed by or for the Government for govermental purposes without the payment to us of any royalties thereon.
Inventors
- 👤 I Kintish
- 👤 I Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:55
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/04; F42B12/10; F42B12/16; F42B12/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
151 words
A projectile comprising: a hollow shell having longitudinally disposed therein a pair of spaced apart shaped charges each provided with an abutting forward liner and having a rearwardly convergent configuration, wherein the forward shaped charge possesses a greater explosion velocity than the rear shaped charge and is susceptible to shock wave detonation from the rear shaped charge, means for initiating the rear shaped charge explosive, a disc adjacent the rear end of the forward charge having a central aperture which is smaller than the slug from the rear charge, said forward charge and liner being provided with coaxial openings therethrough which are aligned with said aperture, whereby when the rear charge is detonated and a jet and slug are formed therefrom, the central aperture and openings allow passage of the jet while the disc retards passage of the slug and thereby imparts a shock wave which detonates the forward shape charge.
Claim 2
Dependent Claim
151 words
A projectile comprising: a hollow shell having longitudinally disposed therein a pair of spaced apart shaped charges each provided with an abutting forward liner and having a rearwardly convergent configuration, wherein the forward shaped charge possesses a greater explosion velocity than the rear shaped charge and is susceptible to shock wave detonation from the rear shaped charge, means for initiating the rear shaped charge explosive, a disc adjacent the rear end of the forward charge having a central aperture which is smaller than the slug from the rear charge, said forward charge and liner being provided with coaxial openings therethrough which are aligned with said aperture, whereby when the rear charge is detonated and a jet and slug are formed therefrom, the central aperture and openings allow passage of the jet while the disc retards passage of the slug and thereby imparts a shock wave which detonates the forward shape charge.
Claim 3
Dependent Claim
26 words
The projectile of claim 1 wherein the distance between the disc and the liner of the rear charge is between 1 and 1.5 shape charge diameters.
Claim 4
Dependent Claim
28 words
The projectile of claim 1 wherein the disc is a material selected from the group consisting of steel, copper, alloys of steel, alloys of copper and reinforced fiberglass.
Claim 5
Dependent Claim
22 words
The projectile of claim 1, wherein the disc is provided with a plurality of openings therethrough in addition to said central aperture.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |