US3451339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Priming explosive devices
Assignee: TECH DE RECH IND ET MECHANIQUE
•
Filing: 1965-03-02
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Granted: 1969-06-24
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Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 Michel Precoul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:06
CPC Classifications
F; F42; F42C; F42C19/00; F42C19/08; F42C19/0838; F42B; F42B1/00; F42B1/02; F42B1/024; F42C9/00; F42C9/10; F42C9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN EXPLOSIVE DEVICE HAVING A CASING, A PRINCIPAL EXPLOSIVE CHARGE IN SAID CASING, SAID PRINCIPAL CHARGE HAVING A CAVITY WITH A LINING TO CONFER A HOLLOW CHARGE EFFECT, FUSE MEANS, AND A BOOSTER ASSEMBLY POSITIONED REARWARDLY OF SAID PRINCIPAL CHARGE, SAID ASSEMBLY COMPRISING A SUBSTANTIALLY CYLINDRICAL BLOCK OF EXPLOSIVELY INERT MATERIAL HAVING A FRUSTO-CONICAL CAVITY, A CONICAL PLUG OF EXPLOSIVELY INERT MATERIAL POSITIONED IN SAID FRUSTO-CONICAL CAVITY AND SMALLER THAN SAID CAVITY, SAID PLUG AND SAID BLOCK DEFINING AN ANNULAR CHAMBER OF FRUSTO-CONICAL SHAPE HAVING ITS LARGER END ADJACENT THE PRINCIPAL CHARGE, AND A BLOCK OF BOOSTER EXPLOSIVE IN SAID CHAMBER, THE LARGER SURFACE OF SAID BOOSTER EXPLOSIVE BLOCK BEING IN DIRECT PHYSICAL CONTACT WITH THE PRINCIPAL CHARGE AND THE LESSER SURFACE BEING PYROTECHNICALLY CONNECTED WITH SAID FUSE MEANS.
Claim 2
Dependent Claim
129 words
AN EXPLOSIVE DEVICE HAVING A CASING, A PRINCIPAL EXPLOSIVE CHARGE IN SAID CASING, SAID PRINCIPAL CHARGE HAVING A CAVITY WITH A LINING TO CONFER A HOLLOW CHARGE EFFECT, FUSE MEANS, AND A BOOSTER ASSEMBLY POSITIONED REARWARDLY OF SAID PRINCIPAL CHARGE, SAID ASSEMBLY COMPRISING A SUBSTANTIALLY CYLINDRICAL BLOCK OF EXPLOSIVELY INERT MATERIAL HAVING A FRUSTO-CONICAL CAVITY, A CONICAL PLUG OF EXPLOSIVELY INERT MATERIAL POSITIONED IN SAID FRUSTO-CONICAL CAVITY AND SMALLER THAN SAID CAVITY, SAID PLUG AND SAID BLOCK DEFINING AN ANNULAR CHAMBER OF FRUSTO-CONICAL SHAPE HAVING ITS LARGER END ADJACENT THE PRINCIPAL CHARGE, AND A BLOCK OF BOOSTER EXPLOSIVE IN SAID CHAMBER, THE LARGER SURFACE OF SAID BOOSTER EXPLOSIVE BLOCK BEING IN DIRECT PHYSICAL CONTACT WITH THE PRINCIPAL CHARGE AND THE LESSER SURFACE BEING PYROTECHNICALLY CONNECTED WITH SAID FUSE MEANS.
References Cited (Backward Citations)
US2713825A
Cited
GB622062A
Cited
US2809585A
Cited
FI26986A
Cited
US2843041A
Cited
US3077834A
Cited
US3100445A
Cited
GB970395A
Cited
US3186341A
Cited
AT228090B
Cited
US3238872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |