Patent US2604042A successfully refreshed from Google Patents.
US2604042A
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Detonating explosive charge and method of impressing surfaces employing same
Assignee: Imperial Chemical Industries Ltd
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Filing: 1948-07-30
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Granted: 1952-07-22
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Expires: 1968-07-30
Abstract
No abstract record available.
Inventors
- 👤 Cook John Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:10
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/24; B21; B21D; B21D26/00; B21D26/02; B21D26/06; B21D26/08; F; F42; F42B; F42B1/00; Y; Y10; Y10S; Y10S102/00; Y10S102/701; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49806
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A METHOD OF IMPRESSING LOW RELIEF MARKINGS INTO A METAL PLATE WHICH COMPRISES INTERPOSING A SHEET OF DESTRUCTIBLE COMPRESSIBLE MATERIAL HAVING PREDETERMINED LOCAL VARIATIONS OF THE KIND OF CAUSE CORRESPONDING DIFFERENCES IN ENERGY ABSORPTION OF A DETONATION DIRECTED THROUGH IT BETWEEN THE METAL PLATE TO BE IMPRESSED AND A COMPOSUTE EXPLOSIVE CHARGE, SAID COMPOSITE EXPLOSIVE CHARGE COMPRISING A RIGHT ANGLE CONE-SHAPED CHARGE ARRANGED FOR DETONATION BY A THICKNESS OF A PRIMING CHARGE OF HIGHER VELOCITY OF DETONATION EXTENDING OVER THE WHOLE OF SAID CONICALLY CURVED SURFACE, THE SINE OF THE BASE OF SAID CONE BEING EQUAL TO THE QUOTIENT OF THE VELOCITY OF DETONATION OF THE
References Cited (Backward Citations)
FR437436A
Cited
US1642341A
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US1851122A
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US1941736A
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US1971700A
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US2407093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |