US3119338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay detonators for priming devices
Assignee: Bombrini Parodi Delfino SpA
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Filing: 1960-07-22
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Granted: 1964-01-28
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Expires: 1980-07-22
Abstract
No abstract record available.
Inventors
- 👤 Pissacroia Angelo Raffaele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:14
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A DELAY DETONATOR FOR PRIMING DEVICES, CONSISTING ESSENTIALLY OF A HOLLOW CYLINDRICAL BODY OPEN AT THE REAR END AND PROVIDED WITH A CENTRAL APERTURE AT THE FORE END, AN IGNITING CAPSULE LOCATED IN THE FORE PART OF THE HOLLOW BODY AND JUST INSIDE THE SAID CENTRAL APERTURE, SAID IGNITING CAPSULE HAVING A PRIMING MIXTURE THEREIN, AND EXPLOSIVE MIXTURE CONTAINED IN THE REAR PART OF THE HOLLOW BODY, SAID IGNITING CAPSULE AND SAID EXPLOSIVE MIXTURE BEING SPACED ALONG THE HOLLOW BODY TO LEAVE AN EXPANSION CHAMBER BETWEEN THEM, SAID IGNITING CAPSULE HAVING THE END FACING SAID APERTURE PROVIDED WITH HOLES IN REGISTER WITH THE SAID CENTRAL APERTURE OF THE HOLLOW BODY, AND AN ANVIL LOCATED IN THE FORE PART OF THE HOLLOW BODY BETWEEN THE IGNITING CAPSULE AND SAID EXPLOSIVE MIXTURE AND EXTENDING INTO THE SAID IGNITING CAPSULE ON THE OPPOSITE END TO THE END HAVING SAID HOLES THEREIN AND ABUTTING SAID PRIMING MIXTURE, SAID ANVIL HAVING HOLES BETWEEN SAID IGNITING CAPSULE AND THE SAID EXPANSION CHAMBER INCLINED
Claim 2
Dependent Claim
167 words
A DELAY DETONATOR FOR PRIMING DEVICES, CONSISTING ESSENTIALLY OF A HOLLOW CYLINDRICAL BODY OPEN AT THE REAR END AND PROVIDED WITH A CENTRAL APERTURE AT THE FORE END, AN IGNITING CAPSULE LOCATED IN THE FORE PART OF THE HOLLOW BODY AND JUST INSIDE THE SAID CENTRAL APERTURE, SAID IGNITING CAPSULE HAVING A PRIMING MIXTURE THEREIN, AND EXPLOSIVE MIXTURE CONTAINED IN THE REAR PART OF THE HOLLOW BODY, SAID IGNITING CAPSULE AND SAID EXPLOSIVE MIXTURE BEING SPACED ALONG THE HOLLOW BODY TO LEAVE AN EXPANSION CHAMBER BETWEEN THEM, SAID IGNITING CAPSULE HAVING THE END FACING SAID APERTURE PROVIDED WITH HOLES IN REGISTER WITH THE SAID CENTRAL APERTURE OF THE HOLLOW BODY, AND AN ANVIL LOCATED IN THE FORE PART OF THE HOLLOW BODY BETWEEN THE IGNITING CAPSULE AND SAID EXPLOSIVE MIXTURE AND EXTENDING INTO THE SAID IGNITING CAPSULE ON THE OPPOSITE END TO THE END HAVING SAID HOLES THEREIN AND ABUTTING SAID PRIMING MIXTURE, SAID ANVIL HAVING HOLES BETWEEN SAID IGNITING CAPSULE AND THE SAID EXPANSION CHAMBER INCLINED
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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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |