US3079861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating shaped charges
Assignee: Services Petroliers Schlumberger SA
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Filing: 1959-05-06
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Granted: 1963-03-05
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Charrin Denis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/28; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A SHAPED CHARGE CASING STRUCTURE COMPRISING CASING MEANS HAVING AN OPENING AT ONE END FOR RECEIVING A SHAPED CHARGE AND FOR INITIALLY CONFINING THE GASES GENERATED UPON DETONATION OF THE CHARGE AND DIRECTING THE FORCE OF THE EXPLOSION TOWARD THE OPEN END OF THE CASING MEANS, THE CASING MEANS BEING FORMED FROM A MASS OF SINTERED AGGLOMERATED METAL PARTICLES SO THAT IT TENDS TO PULVERIZE RATHER THAN TO BREAK INTO LARGE PIECES UPON FRAGMENTATION, AND FILLING MEANS INCORPORATED INTO THE MASS OF SINTERED MATERIAL SO AS TO FILL AT LEAST A PORTION OF THE PORES, THEREBY INCREASING THE SPECIFIC WEIGHT OF THE CASING MEANS AND CONTRIBUTING TO THE CONFINEMENT OF GASES GENERATED UPON DETONATION OF THE CHARGE.
Claim 2
Dependent Claim
117 words
A SHAPED CHARGE CASING STRUCTURE COMPRISING CASING MEANS HAVING AN OPENING AT ONE END FOR RECEIVING A SHAPED CHARGE AND FOR INITIALLY CONFINING THE GASES GENERATED UPON DETONATION OF THE CHARGE AND DIRECTING THE FORCE OF THE EXPLOSION TOWARD THE OPEN END OF THE CASING MEANS, THE CASING MEANS BEING FORMED FROM A MASS OF SINTERED AGGLOMERATED METAL PARTICLES SO THAT IT TENDS TO PULVERIZE RATHER THAN TO BREAK INTO LARGE PIECES UPON FRAGMENTATION, AND FILLING MEANS INCORPORATED INTO THE MASS OF SINTERED MATERIAL SO AS TO FILL AT LEAST A PORTION OF THE PORES, THEREBY INCREASING THE SPECIFIC WEIGHT OF THE CASING MEANS AND CONTRIBUTING TO THE CONFINEMENT OF GASES GENERATED UPON DETONATION OF THE CHARGE.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |