US3096714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric detonators
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1960-10-03
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Granted: 1963-07-09
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Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 Yuill Alexander Mclellan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:45
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
AN ELECTRIC DETONATOR COMPRISING: A DETONATOR CASING HAVING A MOUTH END; A RIGID METAL WALLED TUBE WITHIN SAID CASING; AN ELECTRIC FUSEHEAD HAVING A GAS-PRODUCING MATCHHEAD COMPOSITION PELLET LOCATED WITHIN THE END OF SAID TUBE WHICH IS NEZARER SAID MOUTH END OF SAID CASING; SEALING MEANS WITHIN SAID MOUTH END OF SAID CASING; MEANS FOR PREVENTING FLAME GASES PRODUCED BY SAID PELLET FROM BEARING ON SAID SEALING MEANS; A COLUMN OF A UNIFORMLY HIGHLY COMPRESSED COMPOSITION CONSISTING ESSENTIALLY OF PENTAERYTHRITOL TETRANITRATE COMPRESSED AGAINST SAID PELLET AT A LOADING PRESSURE OF A LEAST 1500 KILOGRAMS PER SQ. CM., SAID COLUMN OCCUPYING A PORTION OF THE BORE OF SAID TUBE; A BASE CHARGE OF A COMPRESSED SECONDARY INITIATING EXPLOSIVE COMPRESSED INTO SAID CASING AT A PRESSURE UP TO ABOUT 350 KILOGRAMS PER SQ. CM., SAID BASE CHARGE OCCUPYING A POSITION IN SAID CASING SUCH THAT A SPACE REMAINS BETWEEN THE END OF SAID HIGHLY COMPRESSED COLUMN IN SAID TUBE AND THE MORE LIGHTLY COMPRESSED BASE CHARGE.
Claim 2
Dependent Claim
164 words
AN ELECTRIC DETONATOR COMPRISING: A DETONATOR CASING HAVING A MOUTH END; A RIGID METAL WALLED TUBE WITHIN SAID CASING; AN ELECTRIC FUSEHEAD HAVING A GAS-PRODUCING MATCHHEAD COMPOSITION PELLET LOCATED WITHIN THE END OF SAID TUBE WHICH IS NEZARER SAID MOUTH END OF SAID CASING; SEALING MEANS WITHIN SAID MOUTH END OF SAID CASING; MEANS FOR PREVENTING FLAME GASES PRODUCED BY SAID PELLET FROM BEARING ON SAID SEALING MEANS; A COLUMN OF A UNIFORMLY HIGHLY COMPRESSED COMPOSITION CONSISTING ESSENTIALLY OF PENTAERYTHRITOL TETRANITRATE COMPRESSED AGAINST SAID PELLET AT A LOADING PRESSURE OF A LEAST 1500 KILOGRAMS PER SQ. CM., SAID COLUMN OCCUPYING A PORTION OF THE BORE OF SAID TUBE; A BASE CHARGE OF A COMPRESSED SECONDARY INITIATING EXPLOSIVE COMPRESSED INTO SAID CASING AT A PRESSURE UP TO ABOUT 350 KILOGRAMS PER SQ. CM., SAID BASE CHARGE OCCUPYING A POSITION IN SAID CASING SUCH THAT A SPACE REMAINS BETWEEN THE END OF SAID HIGHLY COMPRESSED COLUMN IN SAID TUBE AND THE MORE LIGHTLY COMPRESSED BASE 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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |