US3371607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for increasing the safety against unintentional initiation of socalled low energy detonating cord assemblies
Assignee: Nitro Nobel AB
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Filing: 1966-08-16
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Granted: 1968-03-05
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Expires: 1986-08-16
Abstract
No abstract record available.
Inventors
- 👤 Per O I Olsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:32
CPC Classifications
C; C06; C06C; C06C5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A LOW ENERGY DETONATING CORD ASSEMBLY COMPRISING A DETONATING CORD, INCLUDING, A CENTRAL, ELONGATED CORE OF HIGH VELOCITY, DETONATING EXPLOSIVE, A METALLIC ANNULAR TUBE IMMEDIATELY SURROUNDING SAID CORE, AT LEAST ONE ANNULAR LAYER OF INSULATING MATERIAL IMMEDIATELY SURROUNDING SAID METALLIC TUBE; A BOOSTER CAP, INCLUDING, A CAP-TYPE, METAL EXTERIOR SHELL HAVING ONE END CLOSED AND ITS OPPOSITE END AT LEAST PARTIALLY SURROUNDING AND IN CONTACT WITH SAID INSULATING LAYER AT ONE END OF SAID DETONATING CORD; A BLASTING CAP, INCLUDING A CAP-TYPE METAL EXTERIOR SHELL HAVING ONE END CLOSED AND ITS OPPOSITE END AT LEAST PARTIALLY SURROUNDING AND IN CONTACT WITH SAID INSULATING LAYER AT THE OTHER END OF SAID DETONATING CORD; A WIRELIKE ELECTRICAL CONDUCTING MEANS, ELECTRICALLY CONNECTING THE OUTER LATERAL WALL OF SAID ANNULAR TUBE TO THE INNER LATERAL WALL OF AT LEAST ONE OF SAID BLASTING CAP SHELL AND SAID BOOSTER CAP SHELL AND PASSING THROUGH A SUBSTANTIAL PORTION OF SAID INSULATION, WHEREBY DETONATION OF SAID
Claim 2
Dependent Claim
159 words
A LOW ENERGY DETONATING CORD ASSEMBLY COMPRISING A DETONATING CORD, INCLUDING, A CENTRAL, ELONGATED CORE OF HIGH VELOCITY, DETONATING EXPLOSIVE, A METALLIC ANNULAR TUBE IMMEDIATELY SURROUNDING SAID CORE, AT LEAST ONE ANNULAR LAYER OF INSULATING MATERIAL IMMEDIATELY SURROUNDING SAID METALLIC TUBE; A BOOSTER CAP, INCLUDING, A CAP-TYPE, METAL EXTERIOR SHELL HAVING ONE END CLOSED AND ITS OPPOSITE END AT LEAST PARTIALLY SURROUNDING AND IN CONTACT WITH SAID INSULATING LAYER AT ONE END OF SAID DETONATING CORD; A BLASTING CAP, INCLUDING A CAP-TYPE METAL EXTERIOR SHELL HAVING ONE END CLOSED AND ITS OPPOSITE END AT LEAST PARTIALLY SURROUNDING AND IN CONTACT WITH SAID INSULATING LAYER AT THE OTHER END OF SAID DETONATING CORD; A WIRELIKE ELECTRICAL CONDUCTING MEANS, ELECTRICALLY CONNECTING THE OUTER LATERAL WALL OF SAID ANNULAR TUBE TO THE INNER LATERAL WALL OF AT LEAST ONE OF SAID BLASTING CAP SHELL AND SAID BOOSTER CAP SHELL AND PASSING THROUGH A SUBSTANTIAL PORTION OF SAID INSULATION, WHEREBY DETONATION OF SAID
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |