US3326293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well casing repair
Assignee: Wilson Supply Co
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Filing: 1964-06-26
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Granted: 1967-06-20
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Skipper Uvon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/10; E21B47/00; E21B47/10; E21B47/117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A TOOL SUITABLE FOR INSERTION INTO AN OBJECT AND THEN EXPANSION AGAINST ITS INTERIOR BY FLUID PRESSURE, SAID TOOL COMPRISING AN OUTER SLEEVE HAVING A RADIALLY EXPANSIBLE RESILIENT PORTION BETWEEN ITS ENDS; AN INNER SLEEVE SLIDABLE IN SAID OUTER SLEEVE TO TWO POSITIONS; CONDUIT MEANS IN THE SLEEVES FOR PERMITTING IN ONE OF SAID TWO POSITIONS FLUID FROM WITHIN SAID INNER SLEEVE TO EXPAND SAID RESILIENT PORTION OF SAID OUTER SLEEVE, AND FOR PERMITTING IN THE OTHER OF SAID TWO POSITIONS FLUID NEAR SAID RESILIENT PORTION OF FLOW BACK INTO SAID INNER SLEEVE TO DEFLATE SAID RESILIENT PORTION AND FLUID IN SAID INNER SLEEVE TO EMPTY TO THE OUTSIDE OF SAID TOOL; AND AN EXPANSIBLE PATCH DISPOSED AROUND SAID RESILIENT PORTION, WHEREBY SAID RESILIENT PORTION ON EXPANSION CAN EXPAND AND SET SAID PATCH.
Claim 2
Dependent Claim
133 words
A TOOL SUITABLE FOR INSERTION INTO AN OBJECT AND THEN EXPANSION AGAINST ITS INTERIOR BY FLUID PRESSURE, SAID TOOL COMPRISING AN OUTER SLEEVE HAVING A RADIALLY EXPANSIBLE RESILIENT PORTION BETWEEN ITS ENDS; AN INNER SLEEVE SLIDABLE IN SAID OUTER SLEEVE TO TWO POSITIONS; CONDUIT MEANS IN THE SLEEVES FOR PERMITTING IN ONE OF SAID TWO POSITIONS FLUID FROM WITHIN SAID INNER SLEEVE TO EXPAND SAID RESILIENT PORTION OF SAID OUTER SLEEVE, AND FOR PERMITTING IN THE OTHER OF SAID TWO POSITIONS FLUID NEAR SAID RESILIENT PORTION OF FLOW BACK INTO SAID INNER SLEEVE TO DEFLATE SAID RESILIENT PORTION AND FLUID IN SAID INNER SLEEVE TO EMPTY TO THE OUTSIDE OF SAID TOOL; AND AN EXPANSIBLE PATCH DISPOSED AROUND SAID RESILIENT PORTION, WHEREBY SAID RESILIENT PORTION ON EXPANSION CAN EXPAND AND SET SAID PATCH.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |