US3188906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible means for loading a shot hole
Assignee: Phillips Petroleum Co
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Filing: 1963-05-16
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Granted: 1965-06-15
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Expires: 1983-05-16
Abstract
No abstract record available.
Inventors
- 👤 Frank J Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:08
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/08; F42D1/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
154 words
MEANS FOR LOADING A SHOT HOLE HAVING A SUBSTANTIALLY CIRCULAR CROSS-SECTION WALL WITH A SOLID, WATER-SENSITIVE EXPLOSIVE; COMPRISING: A SECTION OF FLEXIBLE WATER-TIGHT TUBING, SEALED AT ITS LOWER END TO RETAIN SAID EXPLOSIVE AND EXCLUDE WATER, SAID TUBING HAVING A DIAMETER WHEN FULLY OPEN TO CIRCULAR CROSS-SECTION WITHOUT STRETCHING LARGER THAN THE NOMINAL DIAMETER OF THE HOLE, SAID TUBING HAVING A LENGTH SUFFICIENT TO EXTEND WITHOUT STRETCHING FROM THE BOTTOM OF THE HOLE TO A POINT IN SAID HOLE ABOVE ANY WATER INLET POINT; A WEIGHT IN THE LOWER END OF SAID TUBING; AN EXPANSIBLE MEANS ATTACHED TO THE UPPER END OF SAID TUBING ADAPTED TO GRIP THE WALL OF SAID HOLE BY CONTACT THEREWITH FOR SUPPORT OF SAID TUBING; MEANS TO LOWER SAID TUBING INTO THE HOLE WHILE MAINTAINING SAID EXPANSIBLE MEANS IN RETRACTED CONDITION TO CLEAR THE WALL OF THE HOLE; AND MEANS TO RELEASE SAID EXPANSIBLE MEANS TO PERMIT IT TO
References Cited (Backward Citations)
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US1627991A
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US2903969A
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US3058418A
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |