Patent US3136367A successfully refreshed from Google Patents.
US3136367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liner releasing tool
Assignee: B&W Inc
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Filing: 1961-06-27
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Granted: 1964-06-09
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Expires: 1981-06-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Wright
- 👤 Kenneth W Solum
- 👤 James R Solum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:36
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/06; Y; Y10; Y10S; Y10S285/00; Y10S285/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A WELL TOOL FOR RELEASING A WELL PIPE OR THE LIKE HAVING AN UPPER END PROVIDED WITH THREAD MEANS AND UPWARDLY FACING SLOT MEANS, THE COMBINATION OF: A MANDREL, A SLEEVE SLIDABLY AND ROTATABLY MOUNTED ON SAID MANDREL, LUG MEANS ON SAID SLEEVE FOR ENGAGING THE SLOT MEANS OF THE WELL PIPE UPPER END TO TRANSMIT ROTATIONAL MOVEMENT FROM SAID SLEEVE TO THE WELL PIPE, A BUSHING SLIDABLY AND ROTATABLY MOUNTED ON SAID MANDREL AND HAVING THREAD MEANS FOR THREADED ENGAGEMENT WITH THE THREAD MEANS ON THE WELL PIPE UPPER END, AND MEANS CARRIED BY SAID MANDREL FOR SELECTIVELY ENGAGING EITHER SAID SLEEVE OR SAID
Claim 2
Dependent Claim
106 words
IN A WELL TOOL FOR RELEASING A WELL PIPE OR THE LIKE HAVING AN UPPER END PROVIDED WITH THREAD MEANS AND UPWARDLY FACING SLOT MEANS, THE COMBINATION OF: A MANDREL, A SLEEVE SLIDABLY AND ROTATABLY MOUNTED ON SAID MANDREL, LUG MEANS ON SAID SLEEVE FOR ENGAGING THE SLOT MEANS OF THE WELL PIPE UPPER END TO TRANSMIT ROTATIONAL MOVEMENT FROM SAID SLEEVE TO THE WELL PIPE, A BUSHING SLIDABLY AND ROTATABLY MOUNTED ON SAID MANDREL AND HAVING THREAD MEANS FOR THREADED ENGAGEMENT WITH THE THREAD MEANS ON THE WELL PIPE UPPER END, AND MEANS CARRIED BY SAID MANDREL FOR SELECTIVELY ENGAGING EITHER SAID SLEEVE OR SAID
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |