US2759417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric blasting cap and perforating gun containing said cap
Assignee: Olin Corp
•
Filing: 1950-11-06
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Granted: 1956-08-21
•
Expires: 1970-11-06
Abstract
No abstract record available.
Inventors
- 👤 Jr John J O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:55
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/192; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117; F42B3/08; F42B3/12; F42B3/125; F42B3/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN AN ELECTRIC BLASTING CAP HAVIN A PLURALITY OF COMPONENTS INCLUDING AN EXPLOSIVE TRAIN CONSISTING OF AN IGNITION CHARGE, AN INITIATOR CHARGE, AND A BASE CHARGE, THE IMPROVEMENT WHICH COMPRISES, ALL EXPLOSIVELY-ACTIVE INGREDIENTS OF SAID IGNITION CHARGE CONSISTING OF LEAD STYPHNATE, ALL EXPLOSIVELY-ACTIVE INGREDIENTS OF SAID INITIATOR CHARGE BEING SELECTED FROM THE GROUP CONSISTING OF LEAD STYPHNATE AND LEAD AZIDE, ALL EXPLOSIVELY-ACTIVE INGREDIENTS OF SAID BASE CHARGE BEING SELECTED FROM THE GROUP CONSISTING OF LEAD AZIDE, CYCLONITE, AND CAPSULATED TRINITROTOLUENE, AND ALL OTHER COMPONENTS OF SAID CAP BEING STABLE AT A TEMPERATURE OF 350* F.
Claim 2
Dependent Claim
95 words
IN AN ELECTRIC BLASTING CAP HAVIN A PLURALITY OF COMPONENTS INCLUDING AN EXPLOSIVE TRAIN CONSISTING OF AN IGNITION CHARGE, AN INITIATOR CHARGE, AND A BASE CHARGE, THE IMPROVEMENT WHICH COMPRISES, ALL EXPLOSIVELY-ACTIVE INGREDIENTS OF SAID IGNITION CHARGE CONSISTING OF LEAD STYPHNATE, ALL EXPLOSIVELY-ACTIVE INGREDIENTS OF SAID INITIATOR CHARGE BEING SELECTED FROM THE GROUP CONSISTING OF LEAD STYPHNATE AND LEAD AZIDE, ALL EXPLOSIVELY-ACTIVE INGREDIENTS OF SAID BASE CHARGE BEING SELECTED FROM THE GROUP CONSISTING OF LEAD AZIDE, CYCLONITE, AND CAPSULATED TRINITROTOLUENE, AND ALL OTHER COMPONENTS OF SAID CAP BEING STABLE AT A TEMPERATURE OF 350* F.
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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) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |