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Patent US3244099A successfully refreshed from Google Patents.
US3244099A
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Controlled velocity explosive charge for seismic exploration
Assignee: Pan American Petroleum Corp
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Filing: 1963-11-12
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Granted: 1966-04-05
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Harold M Lang
- 👤 Thomas K Fulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:03
CPC Classifications
F; F42; F42D; F42D3/00; F42D3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A CONTROLLED VELOCITY EXPLOSIVE CHARGE FOR USE IN SEISMIC SURVEYING WHICH COMPRISES: (A) A FIRST EXPLOSIVE ELEMENT INCLUDING A RIGID TUBE OF A SELECTED LENGTH, AND A CONTINUOUS HELIX OF LINEAR EXPLOSIVE COMPOSITION WRAPPED AROUND SIDE TUBE WITH SAID HELIX HAVING A PITCH PROVIDING AN EFFECTIVE SELECTED DETONATION VELOCITY ALONG THE LENGTH OF SAID TUBE; (B) A SECOND EXPLOSIVE ELEMENT COMPRISING A SELECTED MATERIAL IN A SLENDER CYLINDRICAL SHAPED HAVING A DIAMETER D SUBSTANTIALLY SMALLER THAN THE INNER DIAMETER OF SAID TUBE SO THAT SAID MATERIAL CAN BE FREELY INSERTED INTO SAID TUBE IN A LOOSELY FITTING MANNER SO THAT THERE IS SPACE BETWEEN THE INTERIOR OF THE TUBE AND THE SECOND EXPLOSIVE ELEMENT, SAID MATERIAL CHOSEN SUCH THAT WHEN IN THE FORM OF A CYLINDER OF DIAMETER D IT IS NOT CAPABLE OF SELF-SUSTAINING DETONATION; AND (C) MEANS TO DETONATE SAID FIRST EXPLOSIVE ELEMENT.
Claim 2
Dependent Claim
145 words
A CONTROLLED VELOCITY EXPLOSIVE CHARGE FOR USE IN SEISMIC SURVEYING WHICH COMPRISES: (A) A FIRST EXPLOSIVE ELEMENT INCLUDING A RIGID TUBE OF A SELECTED LENGTH, AND A CONTINUOUS HELIX OF LINEAR EXPLOSIVE COMPOSITION WRAPPED AROUND SIDE TUBE WITH SAID HELIX HAVING A PITCH PROVIDING AN EFFECTIVE SELECTED DETONATION VELOCITY ALONG THE LENGTH OF SAID TUBE; (B) A SECOND EXPLOSIVE ELEMENT COMPRISING A SELECTED MATERIAL IN A SLENDER CYLINDRICAL SHAPED HAVING A DIAMETER D SUBSTANTIALLY SMALLER THAN THE INNER DIAMETER OF SAID TUBE SO THAT SAID MATERIAL CAN BE FREELY INSERTED INTO SAID TUBE IN A LOOSELY FITTING MANNER SO THAT THERE IS SPACE BETWEEN THE INTERIOR OF THE TUBE AND THE SECOND EXPLOSIVE ELEMENT, SAID MATERIAL CHOSEN SUCH THAT WHEN IN THE FORM OF A CYLINDER OF DIAMETER D IT IS NOT CAPABLE OF SELF-SUSTAINING DETONATION; AND (C) MEANS TO DETONATE SAID FIRST EXPLOSIVE ELEMENT.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |