US4170940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projectile charges
Assignee: Societe dEtudes de Realisations et dApplications Techniques SA SERAT
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Filing: 1977-07-07
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Granted: 1979-10-16
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Expires: 1997-07-07
Abstract
Abstract Charge for an explosive projectile characterized in that it comprises a plurality of adjacent, coaxial and annular layers, the peripheral layer having a higher content of heavy powerful explosive than the immediately adjacent layer and so on to the central axial layer which is a solid cylinder and has the lowest content of heavy powerful explosive.
Inventors
- 👤 Michel Precoul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:38
CPC Classifications
F; F42; F42B; F42B1/00; F42B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A generally cylindrical hollow shaped charge for an explosive projectile comprising a generally cylindrical jacket, and an explosive charge within the jacket, the charge having a generally conical, hollow depression in the front end of the charge, the charge being in the form of a plurality of coaxial layers, the innermost layer being a solid cylinder of explosive of relatively low power, the layer overlying the innermost layer being an annular layer having an explosive content more powerful than the innermost layer, and further annular layers, each having an explosive content more powerful than that of the adjacent inner layer, the outermost annular layer having the highest explosive content, the jacket further serving to elongate the jet by causing participation of a larger fraction of the generatrix of the conical depression remote from the front end of the charge.
Claim 2
Dependent Claim
139 words
A generally cylindrical hollow shaped charge for an explosive projectile comprising a generally cylindrical jacket, and an explosive charge within the jacket, the charge having a generally conical, hollow depression in the front end of the charge, the charge being in the form of a plurality of coaxial layers, the innermost layer being a solid cylinder of explosive of relatively low power, the layer overlying the innermost layer being an annular layer having an explosive content more powerful than the innermost layer, and further annular layers, each having an explosive content more powerful than that of the adjacent inner layer, the outermost annular layer having the highest explosive content, the jacket further serving to elongate the jet by causing participation of a larger fraction of the generatrix of the conical depression remote from the front end of the charge.
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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) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |